CN112538481B - 一种利用基因编辑技术获得高油酸植株的方法 - Google Patents
一种利用基因编辑技术获得高油酸植株的方法 Download PDFInfo
- Publication number
- CN112538481B CN112538481B CN202011577361.4A CN202011577361A CN112538481B CN 112538481 B CN112538481 B CN 112538481B CN 202011577361 A CN202011577361 A CN 202011577361A CN 112538481 B CN112538481 B CN 112538481B
- Authority
- CN
- China
- Prior art keywords
- gene
- target
- seq
- cas9
- crispr
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 title claims abstract description 49
- 239000005642 Oleic acid Substances 0.000 title claims abstract description 48
- WRIDQFICGBMAFQ-UHFFFAOYSA-N (E)-8-Octadecenoic acid Natural products CCCCCCCCCC=CCCCCCCC(O)=O WRIDQFICGBMAFQ-UHFFFAOYSA-N 0.000 title claims abstract description 45
- LQJBNNIYVWPHFW-UHFFFAOYSA-N 20:1omega9c fatty acid Natural products CCCCCCCCCCC=CCCCCCCCC(O)=O LQJBNNIYVWPHFW-UHFFFAOYSA-N 0.000 title claims abstract description 45
- QSBYPNXLFMSGKH-UHFFFAOYSA-N 9-Heptadecensaeure Natural products CCCCCCCC=CCCCCCCCC(O)=O QSBYPNXLFMSGKH-UHFFFAOYSA-N 0.000 title claims abstract description 45
- ZQPPMHVWECSIRJ-UHFFFAOYSA-N Oleic acid Natural products CCCCCCCCC=CCCCCCCCC(O)=O ZQPPMHVWECSIRJ-UHFFFAOYSA-N 0.000 title claims abstract description 45
- QXJSBBXBKPUZAA-UHFFFAOYSA-N isooleic acid Natural products CCCCCCCC=CCCCCCCCCC(O)=O QXJSBBXBKPUZAA-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000010362 genome editing Methods 0.000 title claims abstract description 37
- 238000000034 method Methods 0.000 title claims abstract description 23
- 238000005516 engineering process Methods 0.000 title claims abstract description 10
- 244000068988 Glycine max Species 0.000 claims abstract description 57
- 235000010469 Glycine max Nutrition 0.000 claims abstract description 55
- 241000196324 Embryophyta Species 0.000 claims abstract description 53
- 108090000623 proteins and genes Proteins 0.000 claims abstract description 48
- 239000013598 vector Substances 0.000 claims abstract description 24
- 238000004458 analytical method Methods 0.000 claims abstract description 18
- 235000014113 dietary fatty acids Nutrition 0.000 claims abstract description 18
- 229930195729 fatty acid Natural products 0.000 claims abstract description 18
- 239000000194 fatty acid Substances 0.000 claims abstract description 18
- 150000004665 fatty acids Chemical class 0.000 claims abstract description 18
- 238000012216 screening Methods 0.000 claims abstract description 14
- 238000012163 sequencing technique Methods 0.000 claims abstract description 9
- 108091033409 CRISPR Proteins 0.000 claims description 100
- 238000010354 CRISPR gene editing Methods 0.000 claims description 38
- 230000009261 transgenic effect Effects 0.000 claims description 29
- 239000002773 nucleotide Substances 0.000 claims description 19
- 125000003729 nucleotide group Chemical group 0.000 claims description 19
- 241000589158 Agrobacterium Species 0.000 claims description 10
- 241000219194 Arabidopsis Species 0.000 claims description 10
- 239000005562 Glyphosate Substances 0.000 claims description 8
- XDDAORKBJWWYJS-UHFFFAOYSA-N glyphosate Chemical compound OC(=O)CNCP(O)(O)=O XDDAORKBJWWYJS-UHFFFAOYSA-N 0.000 claims description 8
- 229940097068 glyphosate Drugs 0.000 claims description 8
- 230000001131 transforming effect Effects 0.000 claims description 8
- 239000003550 marker Substances 0.000 claims description 6
- 108010054624 red fluorescent protein Proteins 0.000 claims description 4
- 241000588724 Escherichia coli Species 0.000 claims description 3
- 235000003222 Helianthus annuus Nutrition 0.000 claims description 3
- 244000105624 Arachis hypogaea Species 0.000 claims description 2
- 241000208818 Helianthus Species 0.000 claims description 2
- 230000002068 genetic effect Effects 0.000 claims description 2
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 235000020232 peanut Nutrition 0.000 claims description 2
- OYHQOLUKZRVURQ-HZJYTTRNSA-N Linoleic acid Chemical compound CCCCC\C=C/C\C=C/CCCCCCCC(O)=O OYHQOLUKZRVURQ-HZJYTTRNSA-N 0.000 abstract description 17
- DTOSIQBPPRVQHS-PDBXOOCHSA-N alpha-linolenic acid Chemical compound CC\C=C/C\C=C/C\C=C/CCCCCCCC(O)=O DTOSIQBPPRVQHS-PDBXOOCHSA-N 0.000 abstract description 15
- 235000020778 linoleic acid Nutrition 0.000 abstract description 13
- OYHQOLUKZRVURQ-IXWMQOLASA-N linoleic acid Natural products CCCCC\C=C/C\C=C\CCCCCCCC(O)=O OYHQOLUKZRVURQ-IXWMQOLASA-N 0.000 abstract description 13
- 235000020661 alpha-linolenic acid Nutrition 0.000 abstract description 11
- 229960004488 linolenic acid Drugs 0.000 abstract description 11
- KQQKGWQCNNTQJW-UHFFFAOYSA-N linolenic acid Natural products CC=CCCC=CCC=CCCCCCCCC(O)=O KQQKGWQCNNTQJW-UHFFFAOYSA-N 0.000 abstract description 11
- 230000035772 mutation Effects 0.000 abstract description 6
- 238000009395 breeding Methods 0.000 abstract description 5
- 230000001488 breeding effect Effects 0.000 abstract description 5
- 238000010353 genetic engineering Methods 0.000 abstract description 2
- 229960002969 oleic acid Drugs 0.000 description 40
- 235000021313 oleic acid Nutrition 0.000 description 37
- IPCSVZSSVZVIGE-UHFFFAOYSA-N hexadecanoic acid Chemical compound CCCCCCCCCCCCCCCC(O)=O IPCSVZSSVZVIGE-UHFFFAOYSA-N 0.000 description 20
- 108020004414 DNA Proteins 0.000 description 18
- 239000000047 product Substances 0.000 description 12
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 description 10
- 230000015572 biosynthetic process Effects 0.000 description 9
- 238000003786 synthesis reaction Methods 0.000 description 9
- 239000000203 mixture Substances 0.000 description 8
- 230000009466 transformation Effects 0.000 description 8
- 238000001514 detection method Methods 0.000 description 7
- 239000001963 growth medium Substances 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 235000019198 oils Nutrition 0.000 description 7
- 235000021314 Palmitic acid Nutrition 0.000 description 6
- 235000021355 Stearic acid Nutrition 0.000 description 6
- WQEPLUUGTLDZJY-UHFFFAOYSA-N n-Pentadecanoic acid Natural products CCCCCCCCCCCCCCC(O)=O WQEPLUUGTLDZJY-UHFFFAOYSA-N 0.000 description 6
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 description 6
- 238000002264 polyacrylamide gel electrophoresis Methods 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 235000012424 soybean oil Nutrition 0.000 description 6
- 239000003549 soybean oil Substances 0.000 description 6
- 239000008117 stearic acid Substances 0.000 description 6
- 238000012408 PCR amplification Methods 0.000 description 5
- 108700019146 Transgenes Proteins 0.000 description 5
- 238000001962 electrophoresis Methods 0.000 description 5
- 239000000499 gel Substances 0.000 description 5
- 230000006698 induction Effects 0.000 description 5
- 229960004232 linoleic acid Drugs 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- 230000001404 mediated effect Effects 0.000 description 5
- 241000589155 Agrobacterium tumefaciens Species 0.000 description 4
- ROOXNKNUYICQNP-UHFFFAOYSA-N ammonium persulfate Chemical compound [NH4+].[NH4+].[O-]S(=O)(=O)OOS([O-])(=O)=O ROOXNKNUYICQNP-UHFFFAOYSA-N 0.000 description 4
- 235000013339 cereals Nutrition 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 4
- HVYWMOMLDIMFJA-DPAQBDIFSA-N cholesterol Chemical compound C1C=C2C[C@@H](O)CC[C@]2(C)[C@@H]2[C@@H]1[C@@H]1CC[C@H]([C@H](C)CCCC(C)C)[C@@]1(C)CC2 HVYWMOMLDIMFJA-DPAQBDIFSA-N 0.000 description 4
- 229940098695 palmitic acid Drugs 0.000 description 4
- 229960004274 stearic acid Drugs 0.000 description 4
- 241000219195 Arabidopsis thaliana Species 0.000 description 3
- 108090000790 Enzymes Proteins 0.000 description 3
- 102000004190 Enzymes Human genes 0.000 description 3
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 3
- 108020005004 Guide RNA Proteins 0.000 description 3
- 240000008042 Zea mays Species 0.000 description 3
- 235000002017 Zea mays subsp mays Nutrition 0.000 description 3
- 230000001580 bacterial effect Effects 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 239000003292 glue Substances 0.000 description 3
- 239000002609 medium Substances 0.000 description 3
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 3
- 239000013612 plasmid Substances 0.000 description 3
- 238000011426 transformation method Methods 0.000 description 3
- 108700011338 Arabidopsis KAB1 Proteins 0.000 description 2
- 241000894006 Bacteria Species 0.000 description 2
- 208000024172 Cardiovascular disease Diseases 0.000 description 2
- 108020004705 Codon Proteins 0.000 description 2
- 101150048726 E9 gene Proteins 0.000 description 2
- 101150038140 EC1.2 gene Proteins 0.000 description 2
- 101150115493 FAD3 gene Proteins 0.000 description 2
- DHMQDGOQFOQNFH-UHFFFAOYSA-N Glycine Chemical compound NCC(O)=O DHMQDGOQFOQNFH-UHFFFAOYSA-N 0.000 description 2
- 101100446349 Glycine max FAD2-1 gene Proteins 0.000 description 2
- 101150005851 NOS gene Proteins 0.000 description 2
- 101000877236 Siganus canaliculatus Acyl-CoA Delta-4 desaturase Proteins 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- 108091027544 Subgenomic mRNA Proteins 0.000 description 2
- 235000016383 Zea mays subsp huehuetenangensis Nutrition 0.000 description 2
- 230000002745 absorbent Effects 0.000 description 2
- 239000002250 absorbent Substances 0.000 description 2
- 238000000246 agarose gel electrophoresis Methods 0.000 description 2
- 229910001870 ammonium persulfate Inorganic materials 0.000 description 2
- 230000003321 amplification Effects 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 235000012000 cholesterol Nutrition 0.000 description 2
- 238000003501 co-culture Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 239000013604 expression vector Substances 0.000 description 2
- 239000011521 glass Substances 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- JTEDVYBZBROSJT-UHFFFAOYSA-N indole-3-butyric acid Chemical compound C1=CC=C2C(CCCC(=O)O)=CNC2=C1 JTEDVYBZBROSJT-UHFFFAOYSA-N 0.000 description 2
- 238000002372 labelling Methods 0.000 description 2
- 238000009630 liquid culture Methods 0.000 description 2
- 235000009973 maize Nutrition 0.000 description 2
- 238000002156 mixing Methods 0.000 description 2
- 238000003199 nucleic acid amplification method Methods 0.000 description 2
- 235000016709 nutrition Nutrition 0.000 description 2
- 235000020777 polyunsaturated fatty acids Nutrition 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 150000004671 saturated fatty acids Chemical class 0.000 description 2
- 238000007789 sealing Methods 0.000 description 2
- SQGYOTSLMSWVJD-UHFFFAOYSA-N silver(1+) nitrate Chemical compound [Ag+].[O-]N(=O)=O SQGYOTSLMSWVJD-UHFFFAOYSA-N 0.000 description 2
- 239000006228 supernatant Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- OYHQOLUKZRVURQ-NTGFUMLPSA-N (9Z,12Z)-9,10,12,13-tetratritiooctadeca-9,12-dienoic acid Chemical compound C(CCCCCCC\C(=C(/C\C(=C(/CCCCC)\[3H])\[3H])\[3H])\[3H])(=O)O OYHQOLUKZRVURQ-NTGFUMLPSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- 201000001320 Atherosclerosis Diseases 0.000 description 1
- 238000010453 CRISPR/Cas method Methods 0.000 description 1
- ZAMOUSCENKQFHK-UHFFFAOYSA-N Chlorine atom Chemical compound [Cl] ZAMOUSCENKQFHK-UHFFFAOYSA-N 0.000 description 1
- 229920000742 Cotton Polymers 0.000 description 1
- 101710088194 Dehydrogenase Proteins 0.000 description 1
- 108010082495 Dietary Plant Proteins Proteins 0.000 description 1
- YQYJSBFKSSDGFO-UHFFFAOYSA-N Epihygromycin Natural products OC1C(O)C(C(=O)C)OC1OC(C(=C1)O)=CC=C1C=C(C)C(=O)NC1C(O)C(O)C2OCOC2C1O YQYJSBFKSSDGFO-UHFFFAOYSA-N 0.000 description 1
- 101150058769 FAD2 gene Proteins 0.000 description 1
- 206010064571 Gene mutation Diseases 0.000 description 1
- 239000004471 Glycine Substances 0.000 description 1
- 101100446350 Glycine max FAD2-2 gene Proteins 0.000 description 1
- 241000219146 Gossypium Species 0.000 description 1
- 244000020551 Helianthus annuus Species 0.000 description 1
- 101150062179 II gene Proteins 0.000 description 1
- 102000003960 Ligases Human genes 0.000 description 1
- 108090000364 Ligases Proteins 0.000 description 1
- KWYHDKDOAIKMQN-UHFFFAOYSA-N N,N,N',N'-tetramethylethylenediamine Chemical compound CN(C)CCN(C)C KWYHDKDOAIKMQN-UHFFFAOYSA-N 0.000 description 1
- 208000008589 Obesity Diseases 0.000 description 1
- 240000007594 Oryza sativa Species 0.000 description 1
- 235000007164 Oryza sativa Nutrition 0.000 description 1
- 244000046052 Phaseolus vulgaris Species 0.000 description 1
- 235000010627 Phaseolus vulgaris Nutrition 0.000 description 1
- 241001052560 Thallis Species 0.000 description 1
- 235000021307 Triticum Nutrition 0.000 description 1
- 244000098338 Triticum aestivum Species 0.000 description 1
- 235000005824 Zea mays ssp. parviglumis Nutrition 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000002390 adhesive tape Substances 0.000 description 1
- 230000009418 agronomic effect Effects 0.000 description 1
- 239000003242 anti bacterial agent Substances 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 229940088710 antibiotic agent Drugs 0.000 description 1
- 230000037429 base substitution Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 208000026106 cerebrovascular disease Diseases 0.000 description 1
- 229910052801 chlorine Inorganic materials 0.000 description 1
- 239000000460 chlorine Substances 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010367 cloning Methods 0.000 description 1
- 239000012881 co-culture medium Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 235000005822 corn Nutrition 0.000 description 1
- 238000012217 deletion Methods 0.000 description 1
- 230000037430 deletion Effects 0.000 description 1
- 108010005155 delta-12 fatty acid desaturase Proteins 0.000 description 1
- 235000005911 diet Nutrition 0.000 description 1
- 230000000378 dietary effect Effects 0.000 description 1
- 238000010790 dilution Methods 0.000 description 1
- 239000012895 dilution Substances 0.000 description 1
- 239000000539 dimer Substances 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 239000008157 edible vegetable oil Substances 0.000 description 1
- 230000002526 effect on cardiovascular system Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012877 elongation medium Substances 0.000 description 1
- 230000032050 esterification Effects 0.000 description 1
- 238000005886 esterification reaction Methods 0.000 description 1
- 230000004136 fatty acid synthesis Effects 0.000 description 1
- 230000035784 germination Effects 0.000 description 1
- 238000005984 hydrogenation reaction Methods 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 229960000318 kanamycin Drugs 0.000 description 1
- 229930027917 kanamycin Natural products 0.000 description 1
- SBUJHOSQTJFQJX-NOAMYHISSA-N kanamycin Chemical compound O[C@@H]1[C@@H](O)[C@H](O)[C@@H](CN)O[C@@H]1O[C@H]1[C@H](O)[C@@H](O[C@@H]2[C@@H]([C@@H](N)[C@H](O)[C@@H](CO)O2)O)[C@H](N)C[C@@H]1N SBUJHOSQTJFQJX-NOAMYHISSA-N 0.000 description 1
- 229930182823 kanamycin A Natural products 0.000 description 1
- 230000037356 lipid metabolism Effects 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 230000011987 methylation Effects 0.000 description 1
- 238000007069 methylation reaction Methods 0.000 description 1
- 235000021281 monounsaturated fatty acids Nutrition 0.000 description 1
- ZIUHHBKFKCYYJD-UHFFFAOYSA-N n,n'-methylenebisacrylamide Chemical compound C=CC(=O)NCNC(=O)C=C ZIUHHBKFKCYYJD-UHFFFAOYSA-N 0.000 description 1
- 239000013642 negative control Substances 0.000 description 1
- 150000007523 nucleic acids Chemical group 0.000 description 1
- 230000035764 nutrition Effects 0.000 description 1
- 235000020824 obesity Nutrition 0.000 description 1
- -1 palmitic acid (16:0) Chemical class 0.000 description 1
- 230000037361 pathway Effects 0.000 description 1
- 239000013641 positive control Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- 230000001172 regenerating effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 235000009566 rice Nutrition 0.000 description 1
- JQXXHWHPUNPDRT-WLSIYKJHSA-N rifampicin Chemical compound O([C@](C1=O)(C)O/C=C/[C@@H]([C@H]([C@@H](OC(C)=O)[C@H](C)[C@H](O)[C@H](C)[C@@H](O)[C@@H](C)\C=C\C=C(C)/C(=O)NC=2C(O)=C3C([O-])=C4C)C)OC)C4=C1C3=C(O)C=2\C=N\N1CC[NH+](C)CC1 JQXXHWHPUNPDRT-WLSIYKJHSA-N 0.000 description 1
- 229960001225 rifampicin Drugs 0.000 description 1
- 239000012882 rooting medium Substances 0.000 description 1
- 235000003441 saturated fatty acids Nutrition 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 229910001961 silver nitrate Inorganic materials 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 235000010692 trans-unsaturated fatty acids Nutrition 0.000 description 1
- 235000021122 unsaturated fatty acids Nutrition 0.000 description 1
- 150000004670 unsaturated fatty acids Chemical class 0.000 description 1
- 235000015112 vegetable and seed oil Nutrition 0.000 description 1
- 239000008158 vegetable oil Substances 0.000 description 1
Images
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07K—PEPTIDES
- C07K14/00—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof
- C07K14/415—Peptides having more than 20 amino acids; Gastrins; Somatostatins; Melanotropins; Derivatives thereof from plants
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/11—DNA or RNA fragments; Modified forms thereof; Non-coding nucleic acids having a biological activity
- C12N15/113—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing
- C12N15/1137—Non-coding nucleic acids modulating the expression of genes, e.g. antisense oligonucleotides; Antisense DNA or RNA; Triplex- forming oligonucleotides; Catalytic nucleic acids, e.g. ribozymes; Nucleic acids used in co-suppression or gene silencing against enzymes
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/65—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression using markers
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
- C12N15/8216—Methods for controlling, regulating or enhancing expression of transgenes in plant cells
- C12N15/8218—Antisense, co-suppression, viral induced gene silencing [VIGS], post-transcriptional induced gene silencing [PTGS]
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N15/00—Mutation or genetic engineering; DNA or RNA concerning genetic engineering, vectors, e.g. plasmids, or their isolation, preparation or purification; Use of hosts therefor
- C12N15/09—Recombinant DNA-technology
- C12N15/63—Introduction of foreign genetic material using vectors; Vectors; Use of hosts therefor; Regulation of expression
- C12N15/79—Vectors or expression systems specially adapted for eukaryotic hosts
- C12N15/82—Vectors or expression systems specially adapted for eukaryotic hosts for plant cells, e.g. plant artificial chromosomes (PACs)
- C12N15/8241—Phenotypically and genetically modified plants via recombinant DNA technology
- C12N15/8242—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits
- C12N15/8243—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits involving biosynthetic or metabolic pathways, i.e. metabolic engineering, e.g. nicotine, caffeine
- C12N15/8247—Phenotypically and genetically modified plants via recombinant DNA technology with non-agronomic quality (output) traits, e.g. for industrial processing; Value added, non-agronomic traits involving biosynthetic or metabolic pathways, i.e. metabolic engineering, e.g. nicotine, caffeine involving modified lipid metabolism, e.g. seed oil composition
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N9/00—Enzymes; Proenzymes; Compositions thereof; Processes for preparing, activating, inhibiting, separating or purifying enzymes
- C12N9/0004—Oxidoreductases (1.)
- C12N9/0071—Oxidoreductases (1.) acting on paired donors with incorporation of molecular oxygen (1.14)
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12Y—ENZYMES
- C12Y114/00—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14)
- C12Y114/19—Oxidoreductases acting on paired donors, with incorporation or reduction of molecular oxygen (1.14) with oxidation of a pair of donors resulting in the reduction of molecular oxygen to two molecules of water (1.14.19)
- C12Y114/19006—DELTA12-fatty-acid desaturase (1.14.19.6), i.e. oleoyl-CoA DELTA12 desaturase
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N2310/00—Structure or type of the nucleic acid
- C12N2310/10—Type of nucleic acid
- C12N2310/20—Type of nucleic acid involving clustered regularly interspaced short palindromic repeats [CRISPRs]
Landscapes
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Genetics & Genomics (AREA)
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Organic Chemistry (AREA)
- Wood Science & Technology (AREA)
- Zoology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Biomedical Technology (AREA)
- Biotechnology (AREA)
- General Engineering & Computer Science (AREA)
- Molecular Biology (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Biophysics (AREA)
- Plant Pathology (AREA)
- Physics & Mathematics (AREA)
- Cell Biology (AREA)
- Virology (AREA)
- Medicinal Chemistry (AREA)
- Gastroenterology & Hepatology (AREA)
- Botany (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Nutrition Science (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Measuring Or Testing Involving Enzymes Or Micro-Organisms (AREA)
Abstract
本发明涉及一种利用基因编辑技术获得高油酸植株的方法,属于植物基因工程技术领域,主要包括三个部分:首先,为了提高基因编辑效率,利用AtKASII启动子驱动Cas9基因表达;其次,为了提高油酸含量,同时降低亚油酸和亚麻酸含量,选择将mFAD2‑1A,GmFAD2‑1B和GmFAD3A作为靶基因,并设计两个靶序列插入载体中;最后,通过对大豆籽粒中脂肪酸组分分析,以及分子鉴定和测序分析筛选得到三基因纯合突变的高油酸大豆植株。本发明为高油酸含量的油料作物品质育种工作提供了一种全新的途径,具有良好的应用前景。
Description
技术领域
本发明属于植物基因工程技术领域,具体地,涉及一种利用基因编辑技术获得高油酸植株的方法。
背景技术
大豆(Glycine mas L.Merrill)起源于中国,是世界上重要的油料和经济作物之一,也是人类植物油和植物性蛋白的主要来源。随着生活水平的提高以及饮食结构的改善,人们对优质大豆油的需求日益增长,培育高品质大豆成为大豆育种的重要目标之一。大豆油约占我国植物食用油消费的40%,大豆脂肪酸的组分及其配比决定大豆油脂的品质,其主要由棕榈酸(16:0)、硬脂酸(18:0)、油酸(18:1)、亚油酸(18:2)和亚麻酸(18:3)5种脂肪酸组成,分别约占大豆脂肪酸总量的10%、4%、18%、55%和13%。其中,硬脂酸、棕榈酸为饱和脂肪酸;油酸、亚油酸、亚麻酸为不饱和脂肪酸。饱和脂肪酸不容易被人体消化吸收,易引起肥胖症及心脑血管疾病。亚油酸、亚麻酸是多不饱和脂肪酸,稳定性差,在高温加工时易氧化,使营养价值降低,影响油的品质,在工业上的加氢反应也易产生对人体有害的反式脂肪酸。而油酸作为一种单不饱和脂肪酸,性质稳定,抗氧化作用强,在人体的脂类代谢中能降低有害胆固醇,保持有益胆固醇,从而减缓动脉粥样硬化,有效预防心血管疾病发生的机率。所以,油酸是平衡油脂营养及化学稳定性矛盾的首选脂肪酸。因此,提高油酸的相对含量,增加油酸/亚油酸的比值,已成为大豆品质改良育种的重要目标之一。
在脂肪酸合成途径中,Δ12-脂肪酸脱饱和酶(deltatwelve fatty aciddesaturase 2enzyme,FAD2)是催化油酸转化为亚油酸的关键酶。已有研究表明抑制FAD2基因表达从而降低种子中脂肪酸脱氢酶的活性,便能抑制油酸向亚油酸转化,从而使种子中的油酸增加。目前,拟南芥、棉花、向日葵、大豆等植物中的FAD2基因已经被克隆。大豆中存在两类FAD2基因,即FAD2-1和FAD2-2(FAD2-2A,FAD2-2B,FAD2-2C、FAD2-2D和FAD2-2E),其中FAD2-1又包含FAD2-1A和FAD2-1B,这两个基因在种子中特异性表达,是决定种子油酸含量的两个主要基因。
同时,改良大豆油品质的另一常用手段是通过降低亚麻酸含量来减少多不饱和脂肪酸的比例,而FAD3是催化亚油酸转化为亚麻酸的关键酶。大豆FAD3基因家族由三个成员组成,分别为FAD3A,FAD3B,和FAD3C。由于FAD3A基因在大豆籽粒发育过程中大量表达,因此,它是影响大豆油脂中亚麻酸含量的主要因素。
CRISPR/Cas9系统是近几年开发的一种准确、便捷、高效率的生物基因组编辑方法。通过向导RNA的介导和Cas9蛋白的切割来实现对靶基因的定点编辑。该技术不仅对基因功能的研究提供了新思路,更广泛的应用于生物医药的研发和农作物的遗传改良等领域。目前,CRISPR/Cas9系统已经成功应用在拟南芥、水稻、玉米、小麦、大豆等植物中。CRISPR/Cas9基因编辑技术不仅能够快速、便捷的实现基因的靶向突变,更能高效的聚合作物某些优良农艺性状,为作物育种提供创新高效的新途径。
发明内容
针对上述问题,本发明的目的一在于选择并克隆合适的启动子用于启动Cas9蛋白基因的表达,以大大提高CRISPR/Cas9的编辑效率;目的二在于以FAD2-1A,FAD2-1B和FAD3A为靶基因,选择并克隆合适的靶序列至CRISPR/Cas9编辑载体上,获得一种双靶点CRISPR/Cas9基因编辑载体,对这些靶序列的编辑可以获得真正意义上的功能缺失型突变体;目的三在于提供一种转化体,所述转化体包含上述的双靶点CRISPR/Cas9基因编辑载体;目的四是提供一种利用CRISPR/Cas9基因编辑技术获取高油酸植株的方法,对转基因后代种子进行脂肪酸组分分析以筛选获得高油酸植株。
为了实现上述目的,本发明采用的具体方案为:
AtKASII启动子在利用CRISPR/Cas9基因编辑系统提高油料作物中油酸含量方面的应用,所述AtKASII启动子为拟南芥AtKASII基因的启动子,核苷酸序列如SEQ ID NO:03所示。
本发明提供一种双靶点CRISPR/Cas9基因编辑载体,包括依次顺序连接的双靶点表达元件、Cas9蛋白基因、mCherry荧光蛋白基因和草甘膦筛选标记基因;所述双靶点表达元件包括靶序列S2和靶序列S3,所述靶序列S2的核苷酸序列如SEQ ID NO:04所示,所述靶序列S3的核苷酸序列如SEQ ID NO:05所示;所述Cas9蛋白基因的启动子为AtKASII启动子,核苷酸序列如SEQ ID NO:03所示。
本发明还提供一种转化体,所述转化体包含上述的双靶点CRISPR/Cas9基因编辑载体。
本发明还另外提供一种利用CRISPR/Cas9基因编辑系统获取高油酸植株的方法,所述CRISPR/Cas9基因编辑系统采用上述的双靶点CRISPR/Cas9基因编辑载体。
具体地,所述利用CRISPR/Cas9基因编辑技术获取高油酸植株的方法,包括以下步骤:
步骤一、构建双靶点CRISPR/Cas9基因编辑载体:设计引物ZYP22和ZYP23克隆AtKASII启动子,所述引物ZYP22的序列如SEQ ID NO:01所示,所述ZYP23的序列如SEQ IDNO:02所示;对大豆FAD2-1A和FAD2-1B的基因序列进行比对,在相同的区域设计并选取得到靶序列S2;对大豆FAD3A、FAD3B和FAD3C的基因序列进行比对,在FAD3A的序列特异性区域设计并选取得到靶序列S3;利用靶序列S2和靶序列S3构建双靶点CRISPR/Cas9基因编辑载体;
所述靶序列S2的核苷酸序列如SEQ ID NO:04所示;
所述靶序列S3的核苷酸序列如SEQ ID NO:05所示;
所述大豆FAD2-1A的核苷酸序列如SEQ ID NO:06所示;
所述大豆FAD2-1B的核苷酸序列如SEQ ID NO:07所示;
所述大豆FAD3A的核苷酸序列如SEQ ID NO:08所示;
步骤二、转化大肠杆菌感受态,Kan板筛选,菌落PCR鉴定阳性;
步骤三、将经步骤二鉴定阳性的单克隆,抽提质粒,测序正确后转化农杆菌;
步骤四、将经步骤三获得的阳性农杆菌介导油料作物转化,获得转基因阳性植株;
步骤五、对转基因阳性植株的T2代籽粒进行脂肪酸组分分析,通过与野生型植株进行比较,获得油酸含量高的转基因株系;
步骤六、对步骤五获得的转基因株系的籽粒进行种植,通过分子鉴定和测序分析,筛选获得大豆FAD2-1A,FAD2-1B和FAD3A基因同时发生突变且不含有Cas9基因的高油酸植株。
进一步地,步骤四所述油料作物包括大豆、花生、油菜和向日葵。
有益效果:
本发明提供了在大豆转化体系中能显著增加CRISPR/Cas9系统编辑效率的Cas9蛋白基因的启动子,即拟南芥AtKASII基因的启动子;提供了能增加大豆油酸含量的CRISPR/Cas9系统的靶标序列S1和S2,该靶位点可以定点编辑大豆FAD2-1A,FAD2-1B和FAD3A基因,且具有比较高的编辑效率;通过CRISPR/Cas9系统可以不同程度的提高大豆的含油量,为高油酸含量的大豆品质育种工作提供了一种全新的途径,具有良好的应用前景。
附图说明
图1是双靶点CRISPR/Cas9双元表达载体KP的构建示意图;其中,RB/LB表示T-DNA左右边界;KASIIp为拟南芥KASII基因的启动子;rbcS-E9t为rbcS E9基因的终止子;2-sgRs为两个sgRNA组成的表达组件;zCas9为玉米密码子优化的Cas9蛋白基因;U6-26p和U6-29p为两个拟南芥U6基因的启动子;U6-26t为U6-26基因的终止子;At2S3p为拟南芥2S3基因的启动子;mCherry为mCherry荧光蛋白基因;NOSt为NOS基因的终止子;G10evo epsps为草甘膦抗性基因;
图2是是双靶点CRISPR/Cas9双元表达载体EP的构建示意图;其中,RB/LB表示T-DNA左右边界;EC1.2p为EC1.2基因的启动子;rbcS-E9t为rbcS E9基因的终止子;2-sgRs为两个sgRNA组成的表达组件;zCas9为玉米密码子优化的Cas9蛋白基因;U6-26p和U6-29p为两个拟南芥U6基因的启动子;U6-26t为U6-26基因的终止子;At2S3p为拟南芥2S3基因的启动子;mCherry为mCherry荧光蛋白基因;NOSt为NOS基因的终止子;G10evo epsps为草甘膦抗性基因;
图3是KP转基因株系中KP-1株系的T2代大豆籽粒和亲本(CK)的脂肪酸组分的比较图;其中,C16:0,C18:0,C18:1,C18:2与C18:3分别代表棕榈酸,硬脂酸,油酸,亚油酸和亚麻酸;
图4是KP转基因株系中KP-2株系的T2代大豆籽粒和亲本(CK)的脂肪酸组分的比较图;其中,C16:0,C18:0,C18:1,C18:2与C18:3分别代表棕榈酸,硬脂酸,油酸,亚油酸和亚麻酸;
图5是KP转基因株系中KP-3株系的T2代大豆籽粒和亲本(CK)的脂肪酸组分的比较图;其中,C16:0,C18:0,C18:1,C18:2与C18:3分别代表棕榈酸,硬脂酸,油酸,亚油酸和亚麻酸;
图6是KP转基因株系中KP-6、KP-8株系的T2代大豆籽粒和亲本(CK)的脂肪酸组分的比较图;其中,C16:0,C18:0,C18:1,C18:2与C18:3分别代表棕榈酸,硬脂酸,油酸,亚油酸和亚麻酸;
图7是5个KP转基因株系(KP-3,KP-8,KP-6,KP-1和KP-2)的T2代单株中FAD3A基因突变位点的聚丙烯酰胺凝胶电泳分析结果;图中数字标注的举例说明:KP-3-42和KP-3-41是KP-3株系的两个T1代植株,而3,9,12,13则是KP-3-42的T2代单株,同理4,8,9,10是KP-3-41的T2代单株,其他株系的数字标注方式类同;图中WT表示亲本(皖豆28),M为DNA Marker(图中显示的两个条带大小分别为250bp和500bp);结果的详细说明参见[0070];
图8是5个KP转基因株系(KP-3,KP-8,KP-6,KP-1和KP-2)的T2代单株中Cas9转基因的PCR扩增产物琼脂糖凝胶电泳结果;图中数字标注的举例说明:KP-3-42和KP-3-41是KP-3株系的两个T1代植株,而3,9,12,13则是KP-3-42的T2代单株,同理4,8,9,10是KP-3-41的T2代单株,其他株系的数字标注方式类同;图中CK1表示阴性对照,即没有Cas9转基因的亲本(皖豆28),CK2表示阳性对照,即含有Cas9转基因的植株,M为DNA Marker(最底部的条带大小为250bp,随后分别为500bp,750bp,1000bp,1500bp等),Cas9转基因的PCR扩增产物为500bp以上的一个条带,小于250bp的条带则是引物二聚体,而非Cas9转基因的PCR扩增产物。
具体实施方式
利用CRISPR/Cas9系统对大豆FAD2-1A,FAD2-1B和FAD3A基因进行定点编辑从而获得高油酸大豆株系,包括以下步骤:
步骤一:构建CRISPR/Cas9基因编辑载体:将原编辑载体中的潮霉素抗性筛选标记替换为草甘膦筛选标记;设计引物ZYP22(SEQ ID NO:01)和ZYP23(SEQ ID NO:02)克隆拟南芥AtKAS II基因的启动子S1(SEQ ID NO:03)以替换原编辑载体中的EC1.2启动子来驱动Cas9基因的表达,将EC1.2启动子驱动的载体命名为EP,而AtKASII启动子驱动的载体命名为KP。
步骤二:gRNA靶点选择:对大豆FAD2-1A和FAD2-1B的基因序列进行比对,在相似的区域进行手动设计靶点,选取靶位点S2(SEQ ID NO:04);对大豆FAD3A、FAD3B和FAD3C的基因序列进行比对,在大豆FAD3A的序列特异性区域进行手动设计靶点,选取靶位点S3(SEQID NO:05)。其中,大豆FAD2-1A,FAD2-1B和FAD3A基因的序列在参考NCBI数据库提供的信息的基础上进行了克隆,其实际的序列分别为S4(SEQ ID NO:06),S5(SEQ ID NO:07)和S6(SEQ ID NO:08)。
步骤三:根据所设计的靶位点合成构建载体相关引物ZYP40(SEQ ID NO:09),ZYP41(SEQ ID NO:10),ZYP42(SEQ ID NO:11)和ZYP43(SEQ ID NO:12),见表1。
步骤四:双靶点CRISPR/Cas9基因编辑载体(如图1和图2)的构建程序具体如下:
(1)gRNA表达盒组装:以高保真酶稀释100倍的pCBC-DT1T2为模板进行四接头引物(ZYP40,ZYP41,ZYP42和ZYP43)PCR扩增并纯化回收PCR产物。
(2)靶点与载体组装:同时用BsaI酶切步骤(1)中的扩增产物与步骤一中构建的载体EP和KP,T4连接酶组装最终载体,获得双靶点CRISPR/Cas9基因编辑载体。
(3)转化大肠杆菌感受态,Kan板筛选,菌落PCR鉴定。
步骤五:步骤四中鉴定为正确的单克隆,抽提质粒,测序正确后转化农杆菌。
步骤六:利用步骤五得到的农杆菌介导大豆转化,转化方法参考美国Iowa StateUniversity,Plant Transformation Facility使用的农杆菌介导的大豆子叶节转化法。
步骤七:对T2代转基因大豆籽粒进行脂肪酸组分分析,通过与野生型植株进行比较,获得油酸含量较高的转基因植株株系。
步骤八:挑选各株系中油酸含量高的大豆籽粒进行种植,并进行分子鉴定和测序分析,筛选获得大豆FAD2-1A,FAD2-1B和FAD3A基因同时发生突变且不含有Cas9基因的非转基因植株。
上述步骤所涉及的引物的序列表如下表1所示。
表1:引物序列表。
实验结果证明,利用拟南芥AtKASII基因的启动子启动Cas9蛋白基因的表达相较于EC1.2基因的启动子可以大大提高CRISPR/Cas9系统在大豆转化体系中的基因编辑效率;通过CRISPR/Cas9基因编辑系统对大豆FAD2-1A,FAD2-1B和FAD3A基因进行编辑后,三基因均发生纯合突变,获得的大豆突变体与亲本相比,油酸含量显著增加。
下面将结合本发明实施例,对本发明实施例中的技术方案进行清楚、完整地描述。
实施例1:转基因大豆植株的获得
根癌农杆菌的电击转化:取构建完成的CRISPR/Cas9基因编辑载体EP和KP各1mL分别加入根癌农杆菌EHA105感受态细胞中混匀,转移至电击杯中。将电击杯放入电击仪的样品槽中,按电击杯电极间距尺寸选择合适的电压进行电击(2.0mm,2500V)。向电击完成的根癌农杆菌中加入1mL不含抗生素的YEP液体培养基,混匀再转入已灭菌的1.5mL离心管中,28℃培养约3h。将菌液4000rpm离心3min,弃上清。混匀残余YEP液体培养基与沉淀菌体,均匀涂布到含有12mg/L利福平和50mg/L卡那霉素的YEP固体培养基平板上,正面向上放于28℃培养箱中1h至菌液完全吸收,然后倒置培养约36-48h至菌落出现。挑取单菌落(经PCR检测,确认为分别含有EP和KP质粒的克隆)摇菌24h,即为根癌农杆菌侵染液。所得菌液保存于以1:1体积比与50%甘油混合保存于-80℃。
外植体的准备与共培养:利用农杆菌介导大豆的转化,转化方法参考美国IowaState University,Plant Transformation Facility使用的农杆菌介导的大豆子叶节转化法(2004;Euphytica 136:167-179)。大豆种子采用氯气干法灭菌16h后播种到萌发培养基上,28℃光照(光周期18h/6h,光照强度140μmol m-2s-1)12~15h。将吸胀的大豆种子置于无菌吸水纸上,沿着种脐用手术刀纵向切割分成两半,去除种皮,得到的含胚轴和子叶的两瓣作为外植体。将农杆菌重悬液倒入洁净的无菌培养皿中,放入大约50个外植体,室温侵染1h。将外植体取出,用无菌吸水纸吸干后置于放有无菌滤纸的共培养基上,每皿7~10个外植体。封口后在培养箱中23℃黑暗共培养3~5天。
筛选与再生:共培养后,将外植体转移到不含筛选剂的芽诱导培养基上。用透气胶带封口并转移到培养室(24℃,光周期18h/6h,光照强度140μmol m-2s-1)培养一周,一周后把外植体转移到含有筛选剂草甘膦(20mg/L)的芽诱导培养基上,培养两周,两周后更换一次芽诱导培养基,继续以相同浓度草甘膦筛选两周。芽诱导4周后,切除残余子叶,并转移到芽伸长培养基上,用5mg/L的草甘膦筛选。培养条件同丛生芽诱导过程,培养4~8周,每2周更换一次芽伸长培养基。将伸长3cm的幼芽切下,在吲哚丁酸(indolebutyric acid,IBA)中蘸3min后插入生根培养基中。1~2周后待根长约2cm时,将生根苗从培养基中取出,洗净根部残留的培养基,转入土中移至温室培养。
按照此实施例,共获得了4个EP转基因阳性株系和8个KP转基因阳性株系。
实施例2:利用脂肪酸组分分析方法筛选突变的大豆籽粒
参考Zheng等(2003;Plant Cell 15:1872-1887)的方法对获得的T2代大豆种子进行脂肪酸组分的分析,具体的实施步骤如下:
(1)固定大豆籽粒,用干净的刀片在远离种脐的一端沿着平行于种脐的方向切取占大豆总体积1/4的子叶(约40mg),切碎后置于2ml进口离心管中,加入玻璃珠,再加入内标C17:0(溶解于正己烷,现配现用)。其余部分的籽粒种植于预先准备好的基质中(深度约1cm),种脐朝下,以供后续进行分子鉴定;
(2)盖紧盖子,于组织破碎仪中进行破碎处理,离心;
(3)转移上清至安捷伦小瓶中,进行甲酯化处理;
(4)甲酯化结束后加入适宜浓度的NaCl溶液和正己烷即可上样进行分析。
分析结果显示,4个EP转基因株系,其油酸含量均与野生型无显著差别,而8个KP转基因株系中有5个株系(KP-1、KP-2、KP-3、KP-6和KP-8)的油酸含量显著高于野生型,其中,油酸含量最高的株系其平均值达到了84.71%,油酸/亚油酸的比值为76.32(野生型的油酸/亚油酸的比值仅有0.47)(图3-图6)。此结果表明,在大豆转基因体系中用拟南芥KASII基因的启动子来驱动Cas9蛋白基因的表达,可以大大提高CRISPR/Cas9编辑系统的基因编辑效率。
实施例3:转基因阳性植株FAD2-1A,FAD2-1B和FAD3A基因编辑位点的检测,同时对Cas9蛋白基因的有无进行检测
经脂肪酸组分分析后,选取油酸含量大于80%的种子进行种植,选取的同一株系中不同种子间的油酸含量相同或相近。获得KP转基因T2代植株,提取KP转基因T2代植株叶片的基因组DNA。
然后,以基因组DNA为模板,设计引物以使扩增产物为靶序列附近150-250bp的序列,进行常规的PCR反应。设计的引物如下表2所示。
表2:引物序列表。
最后,PCR产物采用聚丙烯酰胺凝胶电泳法检测靶序列的突变与否。具体电泳方法如下:
配制40ml 8%的PAGE胶:10.67ml 30%丙烯酰胺/甲叉双丙烯酰胺溶液(29:1)和4ml 10×TBE,加水定容到40ml,摇匀后加入400μl的10%APS(过硫酸铵)和20μl的TEMED,混匀。沿着玻璃板一端缓慢加入配置好的胶液,使得胶面略高于制胶框,随即插入50孔梳子。待胶凝固后在电泳槽中加入1×TBE直至液面达指定高度。每个胶孔中加入1.5μl PCR产物,用200V电压进行电泳,根据DNA大小选择适宜的电泳时间。电泳停止后将胶用自来水清洗数次并加入0.1%硝酸银溶液,置于摇床10min,用自来水清洗数次,加入显色液继续于摇床上反应10min直至显色。
同时,采用常规PCR检测T2代植株中Cas9蛋白基因的有无。以基因组DNA为模板,引物设计为Cas9蛋白基因特异序列,PCR产物采用1%琼脂糖凝胶电泳检测。
图7中以FAD3A的聚丙烯酰胺凝胶电泳检测为例,只含有与野生型条带迁移率相同的PCR产物的植株被判定为未突变或者只发生了碱基替换的植株(如图7中的KP-8-66-3单株),既含有与野生型条带迁移率相同的条带又含有与野生型条带迁移率不同的条带的植株被判定为杂合突变植株(如图7中的KP-1-26-2单株),而只含有与野生型条带迁移率不同的条带的植株则被判定为纯合突变植株(如图7中KP-3-42-3单株)。以同样的聚丙烯酰胺凝胶电泳检测分析方法对FAD2-1A和FAD2-1B基因的突变位点纯合性进行鉴定。根据聚丙烯酰胺凝胶电泳检测结果及油酸含量的分析结果,选取少数基因型(PCR产物的迁移率)相同的单株,对FAD2-1A,FAD2-1B和FAD3A基因进行进一步PCR扩增与测序分析,其中包括KP-3-42和KP-1-25两个株系的后代(其后代中油酸含量均高达85-57%,而普通大豆中油酸含量在25%左右)。然后将测序结果与野生型FAD2-1A,FAD2-1B和FAD3A基因的核酸序列进行比对,分析结果显示KP-3-42和KP-1-25(分别源于KP-3和KP-1两个株系)的后代中这三个基因均发生了纯合突变。
Cas9蛋白基因检测结果显示(图8),所检测的69个T2代植株中有22株已经不带有Cas9基因,而我们筛选得到的两株纯合突变植株也同时不带有Cas9基因,即非转基因植株。
需要说明的是,以上所述的实施方案应理解为说明性的,而非限制本发明的保护范围,本发明的保护范围以权利要求书为准。对于本领域技术人员而言,在不背离本发明实质和范围的前提下,对本发明作出的一些非本质的改进和调整仍属于本发明的保护范围。
SEQUENCE LISTING
<110> 浙江农林大学、杭州瑞丰生物科技有限公司
<120> 一种利用基因编辑技术获得高油酸植株的方法
<130> 1
<160> 12
<170> PatentIn version 3.3
<210> 1
<211> 30
<212> DNA
<213> 人工合成
<400> 1
atcatgccat ggagatttca ggtgaaagtg 30
<210> 2
<211> 30
<212> DNA
<213> 人工合成
<400> 2
atcatgccat ggggcataaa aaggaagagg 30
<210> 3
<211> 1581
<212> DNA
<213> 拟南芥
<400> 3
agatttcagg tgaaagtgaa aactttgctt ctttcaaaag gtgttcatgg atagtggata 60
agcagcaata cctgaacaca cttgtatcac tttgtgtatc tatctaattc ctttgatatt 120
gaagtagtaa tgttgatttt gatgggctca taccgaacga atcagaaatc gacaagtgtg 180
agatagtatg tatgtgtgca taaaataggc tggtttagct gggaatggtg atgcgaaaat 240
ggaatgttag gtatgagaga gcttacccac tttgactctt tccatgcata ttcgcttgct 300
cccctctttc ctgcttcctc tgttttcttt tattccattt ccatcactta aaaacaaaac 360
aaaaaacctg aactcttggg ttggatttca aaccaacata aaccaattct ctaatacaac 420
ttggtttgat acaatattag agctacttga tgtgtgtaat gtttcgatca gtaggaaaaa 480
caaatcacgt gtatcctatc aaacttttga ttatacacaa gtcaaaagag acattcattg 540
tgtgaattta atgaatttga ggggtctatt atatttatta gtcagcttta acgtatcaaa 600
tccatgactt ttatcaatgt tttttcttct tttctttctg gatctacttc ccaataccat 660
caccggaccg gaccacttga tgatcttcct atttatgaac actactacta gtaaactcat 720
gtataaaata cgtactttat acgtgtattt ctgaagatta gtcacttcaa aaaatcatga 780
gagtaataaa tgttaaaaaa aaaaacagtg gcgctccttt gccatatcac tatcccaagt 840
ctgtaacact tcactgccac aaaaacaaaa aacaagtaat ccaaaataaa ataatgattt 900
tccaagtgtc cttccttcga ttaaaccgag gtcaccaaat ctgtgtatgt aacaaaaatt 960
gtagtggaac atattgaatc agcagcgtta ctgtataatt attttttgat tatatcatta 1020
catcaacata aattatgatt tcctatcatt ctgtgaaatt actgttttca attttgtgat 1080
ttgtacttga aaactaaacc taataaaaga aaataagtta ggaatatttt gttttttagt 1140
tttgaaaagt ggggctattt tttgataaaa tatcatcaac tttaacaaaa atagataaaa 1200
aggttatagt atatattttt tagttacaaa attgagattg agataaaaat aaataaaatt 1260
taatggtcat cgataatatt gagatttgaa gtgtcgattg gtatttgtat agtgttgtat 1320
ctctctctct ctctctctgt ctgtttgttt cagagaagga tttttggcgt ctccacgcac 1380
gatttaacgc atcgaagctc tctgcacgct tcctgaaaga gagagagaag agagagatcg 1440
cagatcgatt tctcttaaat ctctcgtgaa tcccatttgc cttctctctg ctagattctc 1500
tcttcttctc ttcacccatt tctcgctttc tcctttgttc tctcatctgg gttcttctca 1560
aagcctcttc ctttttatgc c 1581
<210> 4
<211> 20
<212> DNA
<213> 人工合成
<400> 4
ttcactgttg gccaactcaa 20
<210> 5
<211> 20
<212> DNA
<213> 人工合成
<400> 5
aaaggaagct tttgatccca 20
<210> 6
<211> 1584
<212> DNA
<213> 大豆
<400> 6
atggtaaatt aaattgtgcc tgcacctcgg gatatttcat gtggggttca tcatatttgt 60
tgaggaaaag aaactcccga aattgaatta tgcatttata tatccttttt catttctaga 120
tttcctgaag gcttaggtgt aggcacctag ctagtagcta caatatcagc acttctctct 180
attgataaac aattggctgt aatgccgcag tagaggacga tcacaacatt tcgtgctggt 240
tactttttgt tttatggtca tgatttcact ctctctaatc tctccattca ttttgtagtt 300
gtcattatct ttagattttt cactacctgg tttaaaattg agggattgta gttctgttgg 360
tacatattac acattcagca aaacaactga aactcaactg aacttgttta tactttgaca 420
cagggtctag caaaggaaac aacaatggga ggtagaggtc gtgtggccaa agtggaagtt 480
caagggaaga agcctctctc aagggttcca aacacaaagc caccattcac tgttggccaa 540
ctcaagaaag caattccacc acactgcttt cagcgctccc tcctcacttc attctcctat 600
gttgtttatg acctttcatt tgccttcatt ttctacattg ccaccaccta cttccacctc 660
cttcctcaac ccttttccct cattgcatgg ccaatctatt gggttctcca aggttgcctt 720
ctcactggtg tgtgggtgat tgctcacgag tgtggtcacc atgccttcag caagtaccaa 780
tgggttgatg atgttgtggg tttgaccctt cactcaacac ttttagtccc ttatttctca 840
tggaaaataa gccatcgccg ccatcactcc aacacaggtt cccttgaccg tgatgaagtg 900
tttgtcccaa aaccaaaatc caaagttgca tggttttcca agtacttaaa caaccctcta 960
ggaagggctg tttctcttct cgtcacactc acaatagggt ggcctatgta tttagccttc 1020
aatgtctctg gtagacccta tgatagtttt gcaagccact accaccctta tgctcccata 1080
tattctaacc gtgagaggct tctgatctat gtctctgatg ttgctttgtt ttctgtgact 1140
tactctctct accgtgttgc aaccctgaaa gggttggttt ggctgctatg tgtttatggg 1200
gtgcctttgc tcattgtgaa cggttttctt gtgactatca catatttgca gcacacacac 1260
tttgccttgc ctcattacga ttcatcagaa tgggactggc tgaagggagc tttggcaact 1320
atggacagag attatgggat tctgaacaag gtgtttcatc acataactga tactcatgtg 1380
gctcaccatc tcttctctac aatgccacat taccatgcaa tggaggcaac caatgcaatc 1440
aagccaatat tgggtgagta ctaccaattt gatgacacac cattttacaa ggcactgtgg 1500
agagaagcga gagagtgcct ctatgtggag ccagatgaag gaacatccga gaagggcgtg 1560
tattggtaca ggaacaagta ttga 1584
<210> 7
<211> 1324
<212> DNA
<213> 大豆
<400> 7
atggtcatga tttcactctc tctaatctgt cacttccctc cattcatttt gtacttctca 60
tatttttcac ttcctggttg aaaattgtag ttctcttggt acatactagt attagacatt 120
cagcaacaac aactgaactg aacttcttta tactttgaca cagggtctag caaaggaaac 180
aataatggga ggtggaggcc gtgtggccaa agttgaaatt cagcagaaga agcctctctc 240
aagggttcca aacacaaagc caccgttcac tgttggccaa ctcaagaaag ccattccacc 300
gcactgcttt cagcgttccc tcctcacttc attgtcctat gttgtttatg acctttcatt 360
ggctttcatt ttctacattg ccaccaccta cttccacctc ctccctcacc ccttttccct 420
cattgcatgg ccaatctatt gggttctcca aggttgcatt cttactggcg tgtgggtgat 480
tgctcacgag tgtggtcacc atgccttcag caagtaccca tgggttgatg atgttgtggg 540
tttgaccgtt cactcagcac ttttagtccc ttatttctca tggaaaataa gccatcgccg 600
ccaccactcc aacacgggtt cccttgaccg tgatgaagtg tttgtcccaa aaccaaaatc 660
caaagttgca tggtacacca agtacctgaa caaccctcta ggaagggctg cttctcttct 720
catcacactc acaatagggt ggcctttgta tttagccttc aatgtctctg gcagacccta 780
tgatggtttt gctagccact accaccctta tgctcccata tattcaaatc gtgagaggct 840
tttgatctat gtctctgatg ttgctttgtt ttctgtgact tacttgctct accgtgttgc 900
aactatgaaa gggttggttt ggctgctatg tgtttatggg gtgccattgc tcattgtgaa 960
cggttttctt gtgaccatca catatctgca gcacacacac tatgccttgc ctcactatga 1020
ttcatcagaa tgggattggc tgaggggtgc tttggcaact atggacagag attatgggat 1080
tctgaacaag gtgtttcacc acataactga tactcatgtg gctcaccatc ttttctctac 1140
aatgccacat taccatgcaa cggaggcaac caatgcaatg aagccaatat tgggtgagta 1200
ctaccgattt gatgacacac cattttacaa ggcactgtgg agagaagcaa gagagtgcct 1260
ctatgtggag ccagatgaag gaacatccga gaagggcgtg tattggtaca ggaacaagta 1320
ttga 1324
<210> 8
<211> 3868
<212> DNA
<213> 大豆
<400> 8
atggttaaag acacaaagcc tttagcctat gctgctaata atggatacca aaaggaagct 60
tttgatccca gtgctcctcc accgtttaag attgcagaaa tcagagttgc aataccaaaa 120
cattgctggg tcaagaatcc atggagatcc ctcagttatg ttctcaggga tgtgcttgta 180
attgctgcat tgatggctgc tgcaagtcac ttcaacaact ggcttctctg gctaatctat 240
tggcccattc aaggaacaat gttctgggct ctgtttgttc ttggacatga ttggtaatta 300
attaatttgt tgttactttt ttgttataat atgaatctca cacactgctt tgttatgcct 360
acctcatttc atttggcttt agacaactta aatttgagat ctttattatg ttttttgctt 420
atatggtaaa gtgattcatt cttcacattg aattgaacag tggccatgga agcttttcag 480
acagcccttt tctaaatagc ctggtgggac acatcttgca ttcctcaatt cttgtgccat 540
accatggatg gttagttcat cccggctttt ttgtttgtca ttggaagttc ttttattgat 600
tcaattttta tagcgtgttc ggaaacgcgt ttcagaaaat aatgaaatac atcttgaatc 660
tgaaagttat aacttttagc ttcattgtca ttgaaagttc ttttattaat tatattttta 720
ttgcgtgttt ggaatcccat ttgagaaata agaaatcacg tttaaaatgt gaaagttata 780
actattaact tttgactaaa cttgaaaaaa tcacattttt gatgtggaac caaatctgat 840
ttgagaacca agttgatttt gatggatttt gcaggagaat tagccacaga actcaccatc 900
aaaatcatgg acacattgag aaaggatgaa tcctgggttc cagtatgtga ttaactactt 960
cctctatagt tatttttgat tcaattaaat ttatttattt aataagttca agaaaaaagg 1020
aatctttata cttcatgata aagctgttct tgaacatttt ttttttgtca ttatcttagt 1080
taaccgagaa gatttacaag aatctagaca acatgacaag acttgttaga ttcactgtgc 1140
catttccatt gtttgtgtat ccaatttatt tggtgagtgc tttttttttt ttacttggaa 1200
gactacaaca cattattatt attataatat ggttcaaatc aatgactttt aatttctttg 1260
tgatgtgcac tccattttca gttctcaaga agccccggaa aggaaggttc tcacttcaat 1320
ccctacagca atctgttccc acccagtgag agaaagggaa tagcaatatc aacactgtgt 1380
tgggttacca tgttttctat gcttatctat ctctccttca taactagtcc agttctattg 1440
ctcaagctct atggaattcc atattgggta attaaattac tcttacatta ctttttcctc 1500
ttttttttta tgggtcttaa ctagtatcac aaaaatattg gttaaaaaat tttaaaaaaa 1560
tatttattat gtaaatcata aaagaacata aaaaaaatga tgaataacat aattttcgtc 1620
tcttattaaa aatattttta ttttaaattt cttaatcaat atatttagaa tctggttaac 1680
attttttgaa tatttcaatt ctccaattaa aaatttgaaa tagtcaccat taattatgta 1740
attgtttgaa cacgtgcaga tatttgttat gtggctggac tttgtcacat acttgcatca 1800
ccatggtcat catcagaaac tgccttggta tcgcggcaag gtaacaaaaa taaatagaaa 1860
atagtgagtg aacacttaaa tgttagatac taccttcttc ttcttttttt ttttttgagg 1920
ttaatgctag ataatagcta gaaagagaaa gaaagacaaa tataggtaaa aataaataat 1980
ataacctggg aagaagaaaa cataaaaaaa gaaataatag agtctacgta atgtttggat 2040
ttttgagtga aatggtgttc acctaccatt actcaaagat tctgttgtct acgtagtgtt 2100
tggactttgg agtgaaatgg tgttcaccta ccattactca gattctgttg tgtcccttag 2160
ttactgtctt atattcttag ggtatattct ttattttaca tccttttcac atcttacttg 2220
aaaagatttt taattattca ttgaaatatt aacgtgacag ttaaattaaa ataataaaaa 2280
attcgttaaa acttcaaata aataagagtg aaaggatcat catttttctt ctttctttta 2340
ttgcgttatt aatcatgctt ctcttctttt ttttcttcgc tttccaccca tatcaaattc 2400
atgtgaagta tgagaaaatc acgattcaat ggaaagctac aggaactttt tttgttttgt 2460
ttttataatc ggaattaatt tatactccat tttttcacaa taaatgttac ttagtgcctt 2520
aaagataata tttgaaaaat taaaaaaatt attaatacac tgtactacta tataatattt 2580
gacatatatt taacatgatt ttctattgaa aatttgtatt tattattttt taatcaaaac 2640
ccataaggca ttaatttaca agacccattt ttcatttata gctttacctg tgatcattta 2700
tagctttaag ggacttagat gttacaatct taattacaag taaatattta tgaaaaacat 2760
gtgtcttacc ccttaacctt acctcaacaa agaaagtgtg ataagtggca acacacgtgt 2820
tgcttttttg gcccagcaat aacacgtgtt tttgtggtgt acaaaaatgg acaggaatgg 2880
agttatttaa gaggtggtct cacaactgtg gatcgtgact atggttggat caataacatt 2940
caccatgaca ttggcaccca tgttattcac catcttttcc ctcaaattcc tcattatcac 3000
ctcgttgaag cggtatattt tactattatt actcacctaa aaagaatgca attagtacat 3060
ttgttttatc tcttggaagt tagtcatttt cagttgcatg attgtaatgt tctctctatt 3120
tttaaaccat gttttcacac ctacttcgtt taaaataaga atgtggatac tattctaatt 3180
tctattaact tcttttaaaa aataatgtaa aactagtatt aaaaaagagg aaatagatta 3240
cactctacta atactaatag tataaaaaaa attacattgt tattttatca caaataatta 3300
tatataatta atttttacaa tcattatctt aaaagtcatg tatgatatac agtttttaca 3360
tgctttggta cttattgtaa agttagtgat ttattcatta tttatgttat ataattggca 3420
taaatatcat gtaaccagct cactatacta taatgggaac ttggtggtga aaggggttta 3480
caaccctctt ttctaggtgt aggtgctttg atacttctgg tcccttttta tatcaatata 3540
aattatattt tgctgataaa aaaaacatta ttaatatata atcattaact tctttaaaaa 3600
ccgtacctaa aactttatat tattaaaaag aagattgaga tcagcaaaag aaaaaaaaat 3660
taacagtcat ttgaattcac tgcagacaca agcagcaaaa tcagttcttg gagagtatta 3720
ccgtgagcca gaaagatctg caccattacc atttcatcta ataaagtatt taattcagag 3780
tatgagacaa gaccacttcg taagtgacac tggagatgtg gtttattatc agactgattc 3840
tctgcacctt cactcgcacc gagactga 3868
<210> 9
<211> 39
<212> DNA
<213> 人工合成
<400> 9
atatatggtc tcgattgtga gttggccaac agtgaagtt 39
<210> 10
<211> 41
<212> DNA
<213> 人工合成
<400> 10
tgtgagttgg ccaacagtga agttttagag ctagaaatag c 41
<210> 11
<211> 43
<212> DNA
<213> 人工合成
<400> 11
aacaaaggaa gcttttgatc cccaatctct tagtcgactc tac 43
<210> 12
<211> 37
<212> DNA
<213> 人工合成
<400> 12
attattggtc tcgaaacaaa ggaagctttt gatcccc 37
Claims (7)
1.AtKASII启动子在提高油料作物中CRISPR/Cas9基因编辑效率方面的应用,所述AtKASII启动子为拟南芥AtKASII基因的启动子,核苷酸序列如SEQ ID NO: 03所示。
2.AtKASII启动子在利用CRISPR/Cas9基因编辑系统改造油料作物中脂肪酸组分方面的应用,所述AtKASII启动子为拟南芥AtKASII基因的启动子,核苷酸序列如SEQ ID NO: 03所示。
3.一种双靶点CRISPR/Cas9基因编辑载体,其特征在于:包括依次顺序连接的双靶点表达元件、Cas9蛋白基因、mCherry荧光蛋白基因和草甘膦筛选标记基因;所述双靶点表达元件包括靶序列S2和靶序列S3,所述靶序列S2的核苷酸序列如SEQ ID NO: 04所示,所述靶序列S3的核苷酸序列如SEQ ID NO: 05所示;所述Cas9蛋白基因的启动子为AtKASII启动子,核苷酸序列如SEQ ID NO: 03所示。
4.一种转化体,包含权利要求3所述的双靶点CRISPR/Cas9基因编辑载体。
5.一种利用CRISPR/Cas9基因编辑技术获取高油酸植株的方法,其特征在于:CRISPR/Cas9基因编辑系统采用权利要求3所述的双靶点CRISPR/Cas9基因编辑载体。
6.根据权利要求5所述的方法,其特征在于:包括以下步骤:
步骤一、构建双靶点CRISPR/Cas9基因编辑载体:设计引物ZYP22和ZYP23克隆AtKASII启动子,所述引物ZYP22的序列如SEQ ID NO: 01所示,所述ZYP23的序列如SEQ ID NO: 02所示;对GmFAD2-1A和GmFAD2-1B的基因序列进行比对,在相同的区域设计并选取得到靶序列S2;对GmFAD3A、GmFAD3B和GmFAD3C的基因序列进行比对,在GmFAD3A的序列特异性区域设计并选取得到靶序列S3;利用靶序列S2和靶序列S3构建双靶点CRISPR/Cas9基因编辑载体;
所述靶序列S2的核苷酸序列如SEQ ID NO: 04所示;
所述靶序列S3的核苷酸序列如SEQ ID NO: 05所示;
所述GmFAD2-1A的核苷酸序列如SEQ ID NO: 06所示;
所述GmFAD2-1B的核苷酸序列如SEQ ID NO: 07所示;
所述GmFAD3A的核苷酸序列如SEQ ID NO: 08所示;
步骤二、转化大肠杆菌感受态,Kan板筛选,菌落PCR鉴定阳性;
步骤三、将经步骤二鉴定阳性的单克隆,抽提质 粒,测序正确后转化农杆菌;
步骤四、将经步骤三获得的阳性农杆菌介导油料作物转化,获得转基因阳性植株;
步骤五、对转基因阳性植株的T2代籽粒进行脂肪酸组分分析,通过与野生型植株进行比较,获得油酸含量高的转基因株系;
步骤六、对步骤五获得的转基因株系的籽粒进行种植,通过分子鉴定和测序分析,筛选获得GmFAD2-1A,GmFAD2-1B和GmFAD3A基因同时发生突变且不含有Cas9基因的高油酸植株。
7.根据权利要求6所述的方法,其特征在于:步骤四所述油料作物包括大豆、花生、油菜和向日葵。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011577361.4A CN112538481B (zh) | 2020-12-28 | 2020-12-28 | 一种利用基因编辑技术获得高油酸植株的方法 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202011577361.4A CN112538481B (zh) | 2020-12-28 | 2020-12-28 | 一种利用基因编辑技术获得高油酸植株的方法 |
Publications (2)
Publication Number | Publication Date |
---|---|
CN112538481A CN112538481A (zh) | 2021-03-23 |
CN112538481B true CN112538481B (zh) | 2022-05-20 |
Family
ID=75017662
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202011577361.4A Active CN112538481B (zh) | 2020-12-28 | 2020-12-28 | 一种利用基因编辑技术获得高油酸植株的方法 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN112538481B (zh) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113980964B (zh) * | 2021-09-14 | 2023-10-10 | 江苏大学 | 一种甘蓝型油菜BnHBBD基因定点突变的方法及应用 |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101473038B (zh) * | 2006-03-15 | 2014-05-28 | Dsmip资产公司 | 含有多不饱和脂肪酸的植物种子油 |
RU2483057C2 (ru) * | 2006-06-28 | 2013-05-27 | Ньюселис Инк. | Смеси жирных кислот и их применение |
WO2008118394A1 (en) * | 2007-03-23 | 2008-10-02 | New York University | Methods of affecting nitrogen assimilation in plants |
CA2710767C (en) * | 2007-12-27 | 2016-09-27 | Cibus Llc | Alkylester fatty acid blends and uses therefor |
-
2020
- 2020-12-28 CN CN202011577361.4A patent/CN112538481B/zh active Active
Also Published As
Publication number | Publication date |
---|---|
CN112538481A (zh) | 2021-03-23 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
US20170191074A1 (en) | In vivo Assembly of Transcription Units | |
CN109182373B (zh) | 一种利用基因编辑技术获得高油酸油菜的方法 | |
CN101405394B (zh) | 对大豆的d-氨基酸选择 | |
US20070212780A1 (en) | Intron double stranded RNA constructs and uses thereof | |
CA2321781C (en) | Particle bombardment transformation of brassica | |
CN107459565B (zh) | 大豆抗旱相关蛋白在调控大豆抗旱性中的应用 | |
Otani et al. | Production of herbicide-resistant sweetpotato (Ipomoea batatas (L.) Lam.) plants by Agrobacterium tumefaciens-mediated transformation | |
CN112575029A (zh) | 一种利用基因编辑技术创制玉米高杆材料的方法 | |
CN106701784B (zh) | 大豆油体蛋白基因GmOLEO1及其编码蛋白与应用 | |
CN112538481B (zh) | 一种利用基因编辑技术获得高油酸植株的方法 | |
CN112126707B (zh) | 来自玉米事件ca09328的核酸分子及其检测方法 | |
Shekhawat et al. | Agrobacterium-mediated genetic transformation of embryogenic cell suspension cultures of Santalum album L. | |
CN112575009A (zh) | 用于提高大豆油酸含量的基因突变体及其应用 | |
CN112342235A (zh) | GmDGAT2A在提高大豆油含量并增加亚油酸含量中的应用 | |
CN107325161B (zh) | 一种与耐低氮胁迫和高盐胁迫相关的蛋白及其编码基因与应用 | |
CN114958867B (zh) | 玉米穗粒重和产量调控基因kwe2、其编码蛋白、功能标记、表达载体及应用 | |
CN112391408B (zh) | 一种利用基因编辑技术选育高类胡萝卜素油菜种子的方法 | |
CN112680465A (zh) | 用于改造大豆脂肪酸组分的基因突变体及其应用 | |
CN112239492B (zh) | 一个控制植物器官大小关键元器件slb1的发掘与应用 | |
AU2004230474B2 (en) | Transformation of Brassica | |
CN118516400B (zh) | gma-miR169c基因在调控植物脂肪酸合成中的应用 | |
CN115806988B (zh) | 花生fus3基因和启动子及其在提高花生含油量和耐盐性中的应用 | |
CN118360299A (zh) | 玉米ACCase突变型基因及其应用 | |
CN118345098A (zh) | 一种具有除草剂抗性的玉米ACCase突变型基因及其应用 | |
TR2021018445A2 (tr) | DOMATESTE MUTANT SENTROMER SPESİFİK HİSTON 3 PROTEİNİ (mtCENH3) ARACILIĞIYLA HAPLOİD İNDÜKLEYİCİ HATLAR GELİŞTİRİLMESİNE YÖNELİK YÖNTEM |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
SE01 | Entry into force of request for substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
GR01 | Patent grant | ||
GR01 | Patent grant |