CN111778266A - 一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用 - Google Patents
一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用 Download PDFInfo
- Publication number
- CN111778266A CN111778266A CN202010517462.6A CN202010517462A CN111778266A CN 111778266 A CN111778266 A CN 111778266A CN 202010517462 A CN202010517462 A CN 202010517462A CN 111778266 A CN111778266 A CN 111778266A
- Authority
- CN
- China
- Prior art keywords
- aidf
- sensing signal
- quorum sensing
- gene
- degrading
- 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.)
- Pending
Links
- 108090000790 Enzymes Proteins 0.000 title claims abstract description 80
- 102000004190 Enzymes Human genes 0.000 title claims abstract description 79
- 230000018612 quorum sensing Effects 0.000 title claims abstract description 59
- 108090000623 proteins and genes Proteins 0.000 title claims abstract description 44
- 230000015556 catabolic process Effects 0.000 title abstract description 27
- 238000006731 degradation reaction Methods 0.000 title abstract description 27
- 230000000593 degrading effect Effects 0.000 claims abstract description 67
- 244000005700 microbiome Species 0.000 claims abstract description 25
- 230000000171 quenching effect Effects 0.000 claims abstract description 22
- 239000013612 plasmid Substances 0.000 claims abstract description 19
- 238000010791 quenching Methods 0.000 claims abstract description 18
- 201000010099 disease Diseases 0.000 claims abstract description 16
- 208000037265 diseases, disorders, signs and symptoms Diseases 0.000 claims abstract description 16
- 244000052616 bacterial pathogen Species 0.000 claims abstract description 15
- 238000002360 preparation method Methods 0.000 claims abstract description 8
- 230000001404 mediated effect Effects 0.000 claims abstract description 7
- 239000002773 nucleotide Substances 0.000 claims abstract description 5
- 125000003729 nucleotide group Chemical group 0.000 claims abstract description 5
- 230000001419 dependent effect Effects 0.000 claims abstract description 4
- YRYOXRMDHALAFL-UHFFFAOYSA-N OHHL Natural products CCCC(=O)CC(=O)NC1CCOC1=O YRYOXRMDHALAFL-UHFFFAOYSA-N 0.000 claims description 18
- 239000012634 fragment Substances 0.000 claims description 6
- 230000003413 degradative effect Effects 0.000 claims description 5
- 239000000047 product Substances 0.000 claims description 4
- 230000008506 pathogenesis Effects 0.000 claims description 2
- 239000008380 degradant Substances 0.000 claims 4
- 125000003275 alpha amino acid group Chemical group 0.000 claims 1
- 238000009472 formulation Methods 0.000 claims 1
- 239000000203 mixture Substances 0.000 claims 1
- 230000000694 effects Effects 0.000 abstract description 12
- 241000531155 Pectobacterium Species 0.000 abstract description 3
- 241000220259 Raphanus Species 0.000 description 20
- 235000006140 Raphanus sativus var sativus Nutrition 0.000 description 20
- 239000000243 solution Substances 0.000 description 19
- 241000588724 Escherichia coli Species 0.000 description 14
- 238000002474 experimental method Methods 0.000 description 13
- BPHPUYQFMNQIOC-NXRLNHOXSA-N isopropyl beta-D-thiogalactopyranoside Chemical compound CC(C)S[C@@H]1O[C@H](CO)[C@H](O)[C@H](O)[C@H]1O BPHPUYQFMNQIOC-NXRLNHOXSA-N 0.000 description 11
- 241000196324 Embryophyta Species 0.000 description 9
- 229920001817 Agar Polymers 0.000 description 7
- 239000008272 agar Substances 0.000 description 7
- 210000004027 cell Anatomy 0.000 description 7
- 241000894006 Bacteria Species 0.000 description 5
- 241000359249 Ochrobactrum intermedium Species 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000007918 pathogenicity Effects 0.000 description 5
- 241000588701 Pectobacterium carotovorum Species 0.000 description 4
- 230000015572 biosynthetic process Effects 0.000 description 4
- 239000000126 substance Substances 0.000 description 4
- 239000006228 supernatant Substances 0.000 description 4
- 238000003786 synthesis reaction Methods 0.000 description 4
- 241000589155 Agrobacterium tumefaciens Species 0.000 description 3
- 241001198387 Escherichia coli BL21(DE3) Species 0.000 description 3
- 108010059820 Polygalacturonase Proteins 0.000 description 3
- 150000001413 amino acids Chemical group 0.000 description 3
- RAXXELZNTBOGNW-UHFFFAOYSA-N imidazole Natural products C1=CNC=N1 RAXXELZNTBOGNW-UHFFFAOYSA-N 0.000 description 3
- 230000006698 induction Effects 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- 230000001717 pathogenic effect Effects 0.000 description 3
- 239000000575 pesticide Substances 0.000 description 3
- 238000000746 purification Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 230000028327 secretion Effects 0.000 description 3
- LPHGXOWFAXFCPX-KKUMJFAQSA-N Glu-Pro-Phe Chemical compound C1C[C@H](N(C1)C(=O)[C@H](CCC(=O)O)N)C(=O)N[C@@H](CC2=CC=CC=C2)C(=O)O LPHGXOWFAXFCPX-KKUMJFAQSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 2
- DDRBQONWVBDQOY-GUBZILKMSA-N Val-Ala-Arg Chemical compound CC(C)[C@H](N)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCN=C(N)N)C(O)=O DDRBQONWVBDQOY-GUBZILKMSA-N 0.000 description 2
- 239000003242 anti bacterial agent Substances 0.000 description 2
- 229940088710 antibiotic agent Drugs 0.000 description 2
- 108010013835 arginine glutamate Proteins 0.000 description 2
- 230000001580 bacterial effect Effects 0.000 description 2
- 230000000443 biocontrol Effects 0.000 description 2
- 239000000872 buffer Substances 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 108010093305 exopolygalacturonase Proteins 0.000 description 2
- 238000000855 fermentation Methods 0.000 description 2
- 230000004151 fermentation Effects 0.000 description 2
- 150000002596 lactones Chemical class 0.000 description 2
- 239000007788 liquid Substances 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002265 prevention Effects 0.000 description 2
- 238000006467 substitution reaction Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- CWFMWBHMIMNZLN-NAKRPEOUSA-N (2s)-1-[(2s)-2-[[(2s,3s)-2-amino-3-methylpentanoyl]amino]propanoyl]pyrrolidine-2-carboxylic acid Chemical compound CC[C@H](C)[C@H](N)C(=O)N[C@@H](C)C(=O)N1CCC[C@H]1C(O)=O CWFMWBHMIMNZLN-NAKRPEOUSA-N 0.000 description 1
- OPIFSICVWOWJMJ-AEOCFKNESA-N 5-bromo-4-chloro-3-indolyl beta-D-galactoside Chemical compound O[C@@H]1[C@@H](O)[C@@H](O)[C@@H](CO)O[C@H]1OC1=CNC2=CC=C(Br)C(Cl)=C12 OPIFSICVWOWJMJ-AEOCFKNESA-N 0.000 description 1
- RLMISHABBKUNFO-WHFBIAKZSA-N Ala-Ala-Gly Chemical compound C[C@H](N)C(=O)N[C@@H](C)C(=O)NCC(O)=O RLMISHABBKUNFO-WHFBIAKZSA-N 0.000 description 1
- JBVSSSZFNTXJDX-YTLHQDLWSA-N Ala-Ala-Thr Chemical compound C[C@@H](O)[C@@H](C(O)=O)NC(=O)[C@H](C)NC(=O)[C@H](C)N JBVSSSZFNTXJDX-YTLHQDLWSA-N 0.000 description 1
- TTXMOJWKNRJWQJ-FXQIFTODSA-N Ala-Arg-Ser Chemical compound OC[C@@H](C(O)=O)NC(=O)[C@@H](NC(=O)[C@@H](N)C)CCCN=C(N)N TTXMOJWKNRJWQJ-FXQIFTODSA-N 0.000 description 1
- NHCPCLJZRSIDHS-ZLUOBGJFSA-N Ala-Asp-Ala Chemical compound [H]N[C@@H](C)C(=O)N[C@@H](CC(O)=O)C(=O)N[C@@H](C)C(O)=O NHCPCLJZRSIDHS-ZLUOBGJFSA-N 0.000 description 1
- ZVFVBBGVOILKPO-WHFBIAKZSA-N Ala-Gly-Ala Chemical compound C[C@H](N)C(=O)NCC(=O)N[C@@H](C)C(O)=O ZVFVBBGVOILKPO-WHFBIAKZSA-N 0.000 description 1
- ZJLORAAXDAJLDC-CQDKDKBSSA-N Ala-Tyr-Leu Chemical compound [H]N[C@@H](C)C(=O)N[C@@H](CC1=CC=C(O)C=C1)C(=O)N[C@@H](CC(C)C)C(O)=O ZJLORAAXDAJLDC-CQDKDKBSSA-N 0.000 description 1
- SGYSTDWPNPKJPP-GUBZILKMSA-N Arg-Ala-Arg Chemical compound NC(=N)NCCC[C@H](N)C(=O)N[C@@H](C)C(=O)N[C@@H](CCCNC(N)=N)C(O)=O SGYSTDWPNPKJPP-GUBZILKMSA-N 0.000 description 1
- OQCWXQJLCDPRHV-UWVGGRQHSA-N Arg-Gly-Leu Chemical compound [H]N[C@@H](CCCNC(N)=N)C(=O)NCC(=O)N[C@@H](CC(C)C)C(O)=O OQCWXQJLCDPRHV-UWVGGRQHSA-N 0.000 description 1
- OKKMBOSPBDASEP-CYDGBPFRSA-N Arg-Ile-Met Chemical compound [H]N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CCSC)C(O)=O OKKMBOSPBDASEP-CYDGBPFRSA-N 0.000 description 1
- GSUFZRURORXYTM-STQMWFEESA-N Arg-Phe-Gly Chemical compound NC(N)=NCCC[C@H](N)C(=O)N[C@H](C(=O)NCC(O)=O)CC1=CC=CC=C1 GSUFZRURORXYTM-STQMWFEESA-N 0.000 description 1
- XWFPGQVLOVGSLU-CIUDSAMLSA-N Asn-Gln-Arg Chemical compound NC(=O)C[C@H](N)C(=O)N[C@@H](CCC(N)=O)C(=O)N[C@H](C(O)=O)CCCN=C(N)N XWFPGQVLOVGSLU-CIUDSAMLSA-N 0.000 description 1
- NUCUBYIUPVYGPP-XIRDDKMYSA-N Asn-Leu-Trp Chemical compound CC(C)C[C@H](NC(=O)[C@@H](N)CC(N)=O)C(=O)N[C@@H](Cc1c[nH]c2ccccc12)C(O)=O NUCUBYIUPVYGPP-XIRDDKMYSA-N 0.000 description 1
- SNYCNNPOFYBCEK-ZLUOBGJFSA-N Asn-Ser-Ser Chemical compound [H]N[C@@H](CC(N)=O)C(=O)N[C@@H](CO)C(=O)N[C@@H](CO)C(O)=O SNYCNNPOFYBCEK-ZLUOBGJFSA-N 0.000 description 1
- QIRJQYQOIKBPBZ-IHRRRGAJSA-N Asn-Tyr-Arg Chemical compound [H]N[C@@H](CC(N)=O)C(=O)N[C@@H](CC1=CC=C(O)C=C1)C(=O)N[C@@H](CCCNC(N)=N)C(O)=O QIRJQYQOIKBPBZ-IHRRRGAJSA-N 0.000 description 1
- FAEIQWHBRBWUBN-FXQIFTODSA-N Asp-Arg-Ser Chemical compound C(C[C@@H](C(=O)N[C@@H](CO)C(=O)O)NC(=O)[C@H](CC(=O)O)N)CN=C(N)N FAEIQWHBRBWUBN-FXQIFTODSA-N 0.000 description 1
- DTNUIAJCPRMNBT-WHFBIAKZSA-N Asp-Gly-Ala Chemical compound [H]N[C@@H](CC(O)=O)C(=O)NCC(=O)N[C@@H](C)C(O)=O DTNUIAJCPRMNBT-WHFBIAKZSA-N 0.000 description 1
- KYQNAIMCTRZLNP-QSFUFRPTSA-N Asp-Ile-Val Chemical compound [H]N[C@@H](CC(O)=O)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](C(C)C)C(O)=O KYQNAIMCTRZLNP-QSFUFRPTSA-N 0.000 description 1
- IVPNEDNYYYFAGI-GARJFASQSA-N Asp-Leu-Pro Chemical compound CC(C)C[C@@H](C(=O)N1CCC[C@@H]1C(=O)O)NC(=O)[C@H](CC(=O)O)N IVPNEDNYYYFAGI-GARJFASQSA-N 0.000 description 1
- GPPIDDWYKJPRES-YDHLFZDLSA-N Asp-Phe-Val Chemical compound [H]N[C@@H](CC(O)=O)C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H](C(C)C)C(O)=O GPPIDDWYKJPRES-YDHLFZDLSA-N 0.000 description 1
- KFYPRIGJTICABD-XGEHTFHBSA-N Cys-Thr-Val Chemical compound C[C@H]([C@@H](C(=O)N[C@@H](C(C)C)C(=O)O)NC(=O)[C@H](CS)N)O KFYPRIGJTICABD-XGEHTFHBSA-N 0.000 description 1
- 206010059866 Drug resistance Diseases 0.000 description 1
- LTUVYLVIZHJCOQ-KKUMJFAQSA-N Glu-Arg-Phe Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC1=CC=CC=C1)C(O)=O LTUVYLVIZHJCOQ-KKUMJFAQSA-N 0.000 description 1
- SJPMNHCEWPTRBR-BQBZGAKWSA-N Glu-Glu-Gly Chemical compound OC(=O)CC[C@H](N)C(=O)N[C@@H](CCC(O)=O)C(=O)NCC(O)=O SJPMNHCEWPTRBR-BQBZGAKWSA-N 0.000 description 1
- QJCKNLPMTPXXEM-AUTRQRHGSA-N Glu-Glu-Val Chemical compound CC(C)[C@@H](C(O)=O)NC(=O)[C@H](CCC(O)=O)NC(=O)[C@@H](N)CCC(O)=O QJCKNLPMTPXXEM-AUTRQRHGSA-N 0.000 description 1
- OGNJZUXUTPQVBR-BQBZGAKWSA-N Glu-Gly-Glu Chemical compound OC(=O)CC[C@H](N)C(=O)NCC(=O)N[C@@H](CCC(O)=O)C(O)=O OGNJZUXUTPQVBR-BQBZGAKWSA-N 0.000 description 1
- KRGZZKWSBGPLKL-IUCAKERBSA-N Glu-Gly-Lys Chemical compound C(CCN)C[C@@H](C(=O)O)NC(=O)CNC(=O)[C@H](CCC(=O)O)N KRGZZKWSBGPLKL-IUCAKERBSA-N 0.000 description 1
- VOORMNJKNBGYGK-YUMQZZPRSA-N Glu-Gly-Met Chemical compound CSCC[C@@H](C(=O)O)NC(=O)CNC(=O)[C@H](CCC(=O)O)N VOORMNJKNBGYGK-YUMQZZPRSA-N 0.000 description 1
- XMPAXPSENRSOSV-RYUDHWBXSA-N Glu-Gly-Tyr Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)NCC(=O)N[C@@H](CC1=CC=C(O)C=C1)C(O)=O XMPAXPSENRSOSV-RYUDHWBXSA-N 0.000 description 1
- IRXNJYPKBVERCW-DCAQKATOSA-N Glu-Leu-Glu Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CCC(O)=O)C(O)=O IRXNJYPKBVERCW-DCAQKATOSA-N 0.000 description 1
- LKOAAMXDJGEYMS-ZPFDUUQYSA-N Glu-Met-Ile Chemical compound [H]N[C@@H](CCC(O)=O)C(=O)N[C@@H](CCSC)C(=O)N[C@@H]([C@@H](C)CC)C(O)=O LKOAAMXDJGEYMS-ZPFDUUQYSA-N 0.000 description 1
- UMZHHILWZBFPGL-LOKLDPHHSA-N Glu-Thr-Pro Chemical compound C[C@H]([C@@H](C(=O)N1CCC[C@@H]1C(=O)O)NC(=O)[C@H](CCC(=O)O)N)O UMZHHILWZBFPGL-LOKLDPHHSA-N 0.000 description 1
- XUDLUKYPXQDCRX-BQBZGAKWSA-N Gly-Arg-Asn Chemical compound [H]NCC(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(N)=O)C(O)=O XUDLUKYPXQDCRX-BQBZGAKWSA-N 0.000 description 1
- OCQUNKSFDYDXBG-QXEWZRGKSA-N Gly-Arg-Ile Chemical compound CC[C@H](C)[C@@H](C(O)=O)NC(=O)[C@@H](NC(=O)CN)CCCN=C(N)N OCQUNKSFDYDXBG-QXEWZRGKSA-N 0.000 description 1
- BYYNJRSNDARRBX-YFKPBYRVSA-N Gly-Gln-Gly Chemical compound NCC(=O)N[C@@H](CCC(N)=O)C(=O)NCC(O)=O BYYNJRSNDARRBX-YFKPBYRVSA-N 0.000 description 1
- UFPXDFOYHVEIPI-BYPYZUCNSA-N Gly-Gly-Asp Chemical compound NCC(=O)NCC(=O)N[C@H](C(O)=O)CC(O)=O UFPXDFOYHVEIPI-BYPYZUCNSA-N 0.000 description 1
- PDAWDNVHMUKWJR-ZETCQYMHSA-N Gly-Gly-His Chemical compound NCC(=O)NCC(=O)N[C@H](C(O)=O)CC1=CNC=N1 PDAWDNVHMUKWJR-ZETCQYMHSA-N 0.000 description 1
- FQKKPCWTZZEDIC-XPUUQOCRSA-N Gly-His-Ala Chemical compound OC(=O)[C@H](C)NC(=O)[C@@H](NC(=O)CN)CC1=CN=CN1 FQKKPCWTZZEDIC-XPUUQOCRSA-N 0.000 description 1
- ADZGCWWDPFDHCY-ZETCQYMHSA-N Gly-His-Gly Chemical compound OC(=O)CNC(=O)[C@@H](NC(=O)CN)CC1=CN=CN1 ADZGCWWDPFDHCY-ZETCQYMHSA-N 0.000 description 1
- WDXLKVQATNEAJQ-BQBZGAKWSA-N Gly-Pro-Asp Chemical compound NCC(=O)N1CCC[C@H]1C(=O)N[C@@H](CC(O)=O)C(O)=O WDXLKVQATNEAJQ-BQBZGAKWSA-N 0.000 description 1
- MYXNLWDWWOTERK-BHNWBGBOSA-N Gly-Thr-Pro Chemical compound C[C@H]([C@@H](C(=O)N1CCC[C@@H]1C(=O)O)NC(=O)CN)O MYXNLWDWWOTERK-BHNWBGBOSA-N 0.000 description 1
- JBCLFWXMTIKCCB-UHFFFAOYSA-N H-Gly-Phe-OH Natural products NCC(=O)NC(C(O)=O)CC1=CC=CC=C1 JBCLFWXMTIKCCB-UHFFFAOYSA-N 0.000 description 1
- MLZVJIREOKTDAR-SIGLWIIPSA-N His-Ile-Ile Chemical compound [H]N[C@@H](CC1=CNC=N1)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H]([C@@H](C)CC)C(O)=O MLZVJIREOKTDAR-SIGLWIIPSA-N 0.000 description 1
- 108090000604 Hydrolases Proteins 0.000 description 1
- 102000004157 Hydrolases Human genes 0.000 description 1
- FVEWRQXNISSYFO-ZPFDUUQYSA-N Ile-Arg-Glu Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H](CCCN=C(N)N)C(=O)N[C@@H](CCC(=O)O)C(=O)O)N FVEWRQXNISSYFO-ZPFDUUQYSA-N 0.000 description 1
- MQFGXJNSUJTXDT-QSFUFRPTSA-N Ile-Gly-Ile Chemical compound N[C@@H]([C@@H](C)CC)C(=O)NCC(=O)N[C@@H]([C@@H](C)CC)C(=O)O MQFGXJNSUJTXDT-QSFUFRPTSA-N 0.000 description 1
- HQEPKOFULQTSFV-JURCDPSOSA-N Ile-Phe-Ala Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H](C)C(=O)O)N HQEPKOFULQTSFV-JURCDPSOSA-N 0.000 description 1
- ZNOBVZFCHNHKHA-KBIXCLLPSA-N Ile-Ser-Glu Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H](CO)C(=O)N[C@@H](CCC(=O)O)C(=O)O)N ZNOBVZFCHNHKHA-KBIXCLLPSA-N 0.000 description 1
- HGCNKOLVKRAVHD-UHFFFAOYSA-N L-Met-L-Phe Natural products CSCCC(N)C(=O)NC(C(O)=O)CC1=CC=CC=C1 HGCNKOLVKRAVHD-UHFFFAOYSA-N 0.000 description 1
- RCFDOSNHHZGBOY-UHFFFAOYSA-N L-isoleucyl-L-alanine Natural products CCC(C)C(N)C(=O)NC(C)C(O)=O RCFDOSNHHZGBOY-UHFFFAOYSA-N 0.000 description 1
- MMEDVBWCMGRKKC-GARJFASQSA-N Leu-Asp-Pro Chemical compound CC(C)C[C@@H](C(=O)N[C@@H](CC(=O)O)C(=O)N1CCC[C@@H]1C(=O)O)N MMEDVBWCMGRKKC-GARJFASQSA-N 0.000 description 1
- PDQDCFBVYXEFSD-SRVKXCTJSA-N Leu-Leu-Asp Chemical compound CC(C)C[C@H](N)C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(O)=O)C(O)=O PDQDCFBVYXEFSD-SRVKXCTJSA-N 0.000 description 1
- YUTNOGOMBNYPFH-XUXIUFHCSA-N Leu-Pro-Ile Chemical compound [H]N[C@@H](CC(C)C)C(=O)N1CCC[C@H]1C(=O)N[C@@H]([C@@H](C)CC)C(O)=O YUTNOGOMBNYPFH-XUXIUFHCSA-N 0.000 description 1
- VMTYLUGCXIEDMV-QWRGUYRKSA-N Lys-Leu-Gly Chemical compound OC(=O)CNC(=O)[C@H](CC(C)C)NC(=O)[C@@H](N)CCCCN VMTYLUGCXIEDMV-QWRGUYRKSA-N 0.000 description 1
- CWFYZYQMUDWGTI-GUBZILKMSA-N Met-Arg-Asp Chemical compound [H]N[C@@H](CCSC)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC(O)=O)C(O)=O CWFYZYQMUDWGTI-GUBZILKMSA-N 0.000 description 1
- NLHSFJQUHGCWSD-PYJNHQTQSA-N Met-Ile-His Chemical compound N[C@@H](CCSC)C(=O)N[C@@H]([C@@H](C)CC)C(=O)N[C@@H](CC1=CNC=N1)C(O)=O NLHSFJQUHGCWSD-PYJNHQTQSA-N 0.000 description 1
- HWROAFGWPQUPTE-OSUNSFLBSA-N Met-Ile-Thr Chemical compound CC[C@H](C)[C@@H](C(=O)N[C@@H]([C@@H](C)O)C(=O)O)NC(=O)[C@H](CCSC)N HWROAFGWPQUPTE-OSUNSFLBSA-N 0.000 description 1
- FXBKQTOGURNXSL-HJGDQZAQSA-N Met-Thr-Glu Chemical compound CSCC[C@H](N)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@H](C(O)=O)CCC(O)=O FXBKQTOGURNXSL-HJGDQZAQSA-N 0.000 description 1
- WXJLBSXNUHIGSS-OSUNSFLBSA-N Met-Thr-Ile Chemical compound [H]N[C@@H](CCSC)C(=O)N[C@@H]([C@@H](C)O)C(=O)N[C@@H]([C@@H](C)CC)C(O)=O WXJLBSXNUHIGSS-OSUNSFLBSA-N 0.000 description 1
- 241001465754 Metazoa Species 0.000 description 1
- YRYOXRMDHALAFL-QMMMGPOBSA-N N-(3-oxohexanoyl)-L-homoserine lactone Chemical compound CCCC(=O)CC(=O)N[C@H]1CCOC1=O YRYOXRMDHALAFL-QMMMGPOBSA-N 0.000 description 1
- SITLTJHOQZFJGG-UHFFFAOYSA-N N-L-alpha-glutamyl-L-valine Natural products CC(C)C(C(O)=O)NC(=O)C(N)CCC(O)=O SITLTJHOQZFJGG-UHFFFAOYSA-N 0.000 description 1
- 108010090121 N-acyl homoserine lactonase Proteins 0.000 description 1
- AJHCSUXXECOXOY-UHFFFAOYSA-N N-glycyl-L-tryptophan Natural products C1=CC=C2C(CC(NC(=O)CN)C(O)=O)=CNC2=C1 AJHCSUXXECOXOY-UHFFFAOYSA-N 0.000 description 1
- 238000012408 PCR amplification Methods 0.000 description 1
- 108091005804 Peptidases Proteins 0.000 description 1
- PSKRILMFHNIUAO-JYJNAYRXSA-N Phe-Glu-Lys Chemical compound C1=CC=C(C=C1)C[C@@H](C(=O)N[C@@H](CCC(=O)O)C(=O)N[C@@H](CCCCN)C(=O)O)N PSKRILMFHNIUAO-JYJNAYRXSA-N 0.000 description 1
- SCKXGHWQPPURGT-KKUMJFAQSA-N Phe-Lys-Ser Chemical compound [H]N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](CO)C(O)=O SCKXGHWQPPURGT-KKUMJFAQSA-N 0.000 description 1
- HJSCRFZVGXAGNG-SRVKXCTJSA-N Pro-Gln-Leu Chemical compound CC(C)C[C@@H](C(O)=O)NC(=O)[C@H](CCC(N)=O)NC(=O)[C@@H]1CCCN1 HJSCRFZVGXAGNG-SRVKXCTJSA-N 0.000 description 1
- FEVDNIBDCRKMER-IUCAKERBSA-N Pro-Gly-Met Chemical compound CSCC[C@@H](C(=O)O)NC(=O)CNC(=O)[C@@H]1CCCN1 FEVDNIBDCRKMER-IUCAKERBSA-N 0.000 description 1
- XYSXOCIWCPFOCG-IHRRRGAJSA-N Pro-Leu-Leu Chemical compound [H]N1CCC[C@H]1C(=O)N[C@@H](CC(C)C)C(=O)N[C@@H](CC(C)C)C(O)=O XYSXOCIWCPFOCG-IHRRRGAJSA-N 0.000 description 1
- LGMBKOAPPTYKLC-JYJNAYRXSA-N Pro-Phe-Arg Chemical compound C([C@@H](C(=O)N[C@@H](CCCNC(=N)N)C(O)=O)NC(=O)[C@H]1NCCC1)C1=CC=CC=C1 LGMBKOAPPTYKLC-JYJNAYRXSA-N 0.000 description 1
- 239000004365 Protease Substances 0.000 description 1
- 102100037486 Reverse transcriptase/ribonuclease H Human genes 0.000 description 1
- BTKUIVBNGBFTTP-WHFBIAKZSA-N Ser-Ala-Gly Chemical compound [H]N[C@@H](CO)C(=O)N[C@@H](C)C(=O)NCC(O)=O BTKUIVBNGBFTTP-WHFBIAKZSA-N 0.000 description 1
- QGMLKFGTGXWAHF-IHRRRGAJSA-N Ser-Arg-Phe Chemical compound [H]N[C@@H](CO)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H](CC1=CC=CC=C1)C(O)=O QGMLKFGTGXWAHF-IHRRRGAJSA-N 0.000 description 1
- MUARUIBTKQJKFY-WHFBIAKZSA-N Ser-Gly-Asp Chemical compound [H]N[C@@H](CO)C(=O)NCC(=O)N[C@@H](CC(O)=O)C(O)=O MUARUIBTKQJKFY-WHFBIAKZSA-N 0.000 description 1
- PMCMLDNPAZUYGI-DCAQKATOSA-N Ser-Lys-Val Chemical compound [H]N[C@@H](CO)C(=O)N[C@@H](CCCCN)C(=O)N[C@@H](C(C)C)C(O)=O PMCMLDNPAZUYGI-DCAQKATOSA-N 0.000 description 1
- JEDIEMIJYSRUBB-FOHZUACHSA-N Thr-Asp-Gly Chemical compound C[C@@H](O)[C@H](N)C(=O)N[C@@H](CC(O)=O)C(=O)NCC(O)=O JEDIEMIJYSRUBB-FOHZUACHSA-N 0.000 description 1
- LYGKYFKSZTUXGZ-ZDLURKLDSA-N Thr-Cys-Gly Chemical compound [H]N[C@@H]([C@@H](C)O)C(=O)N[C@@H](CS)C(=O)NCC(O)=O LYGKYFKSZTUXGZ-ZDLURKLDSA-N 0.000 description 1
- XPNSAQMEAVSQRD-FBCQKBJTSA-N Thr-Gly-Gly Chemical compound C[C@@H](O)[C@H](N)C(=O)NCC(=O)NCC(O)=O XPNSAQMEAVSQRD-FBCQKBJTSA-N 0.000 description 1
- BCYUHPXBHCUYBA-CUJWVEQBSA-N Thr-Ser-His Chemical compound C[C@@H](O)[C@H](N)C(=O)N[C@@H](CO)C(=O)N[C@@H](Cc1cnc[nH]1)C(O)=O BCYUHPXBHCUYBA-CUJWVEQBSA-N 0.000 description 1
- NXAPHBHZCMQORW-FDARSICLSA-N Trp-Arg-Ile Chemical compound [H]N[C@@H](CC1=CNC2=C1C=CC=C2)C(=O)N[C@@H](CCCNC(N)=N)C(=O)N[C@@H]([C@@H](C)CC)C(O)=O NXAPHBHZCMQORW-FDARSICLSA-N 0.000 description 1
- BOBZBMOTRORUPT-XIRDDKMYSA-N Trp-Ser-Leu Chemical compound C1=CC=C2C(C[C@H](N)C(=O)N[C@@H](CO)C(=O)N[C@@H](CC(C)C)C(O)=O)=CNC2=C1 BOBZBMOTRORUPT-XIRDDKMYSA-N 0.000 description 1
- XYBNMHRFAUKPAW-IHRRRGAJSA-N Tyr-Ser-Met Chemical compound CSCC[C@@H](C(=O)O)NC(=O)[C@H](CO)NC(=O)[C@H](CC1=CC=C(C=C1)O)N XYBNMHRFAUKPAW-IHRRRGAJSA-N 0.000 description 1
- ROLGIBMFNMZANA-GVXVVHGQSA-N Val-Glu-Leu Chemical compound CC(C)C[C@@H](C(=O)O)NC(=O)[C@H](CCC(=O)O)NC(=O)[C@H](C(C)C)N ROLGIBMFNMZANA-GVXVVHGQSA-N 0.000 description 1
- LYERIXUFCYVFFX-GVXVVHGQSA-N Val-Leu-Glu Chemical compound CC(C)C[C@@H](C(=O)N[C@@H](CCC(=O)O)C(=O)O)NC(=O)[C@H](C(C)C)N LYERIXUFCYVFFX-GVXVVHGQSA-N 0.000 description 1
- WMRWZYSRQUORHJ-YDHLFZDLSA-N Val-Phe-Asp Chemical compound CC(C)[C@@H](C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)N[C@@H](CC(=O)O)C(=O)O)N WMRWZYSRQUORHJ-YDHLFZDLSA-N 0.000 description 1
- CKTMJBPRVQWPHU-JSGCOSHPSA-N Val-Phe-Gly Chemical compound CC(C)[C@@H](C(=O)N[C@@H](CC1=CC=CC=C1)C(=O)NCC(=O)O)N CKTMJBPRVQWPHU-JSGCOSHPSA-N 0.000 description 1
- DFQZDQPLWBSFEJ-LSJOCFKGSA-N Val-Val-Asn Chemical compound CC(C)[C@@H](C(=O)N[C@@H](C(C)C)C(=O)N[C@@H](CC(=O)N)C(=O)O)N DFQZDQPLWBSFEJ-LSJOCFKGSA-N 0.000 description 1
- 230000003044 adaptive effect Effects 0.000 description 1
- 238000001261 affinity purification Methods 0.000 description 1
- 108010047495 alanylglycine Proteins 0.000 description 1
- 108010087924 alanylproline Proteins 0.000 description 1
- 108010052670 arginyl-glutamyl-glutamic acid Proteins 0.000 description 1
- 108010068380 arginylarginine Proteins 0.000 description 1
- 108010038633 aspartylglutamate Proteins 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000012148 binding buffer Substances 0.000 description 1
- 230000003115 biocidal effect Effects 0.000 description 1
- 230000008827 biological function Effects 0.000 description 1
- 230000033228 biological regulation Effects 0.000 description 1
- 239000007853 buffer solution Substances 0.000 description 1
- 210000002421 cell wall Anatomy 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000003776 cleavage reaction Methods 0.000 description 1
- 238000010367 cloning Methods 0.000 description 1
- 238000011217 control strategy Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000006806 disease prevention Effects 0.000 description 1
- 229940079593 drug Drugs 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000003912 environmental pollution Methods 0.000 description 1
- 239000013604 expression vector Substances 0.000 description 1
- 235000013305 food Nutrition 0.000 description 1
- 108010049041 glutamylalanine Proteins 0.000 description 1
- 108010033719 glycyl-histidyl-glycine Proteins 0.000 description 1
- 108010050848 glycylleucine Proteins 0.000 description 1
- 108010081551 glycylphenylalanine Proteins 0.000 description 1
- 108010084389 glycyltryptophan Proteins 0.000 description 1
- 108010036413 histidylglycine Proteins 0.000 description 1
- 208000015181 infectious disease Diseases 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 108010044311 leucyl-glycyl-glycine Proteins 0.000 description 1
- 108010091871 leucylmethionine Proteins 0.000 description 1
- 108010038320 lysylphenylalanine Proteins 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000003550 marker Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 108010068488 methionylphenylalanine Proteins 0.000 description 1
- 230000000813 microbial effect Effects 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000037230 mobility Effects 0.000 description 1
- 235000015097 nutrients Nutrition 0.000 description 1
- 239000008188 pellet Substances 0.000 description 1
- 108010012581 phenylalanylglutamate Proteins 0.000 description 1
- 239000003755 preservative agent Substances 0.000 description 1
- 230000002335 preservative effect Effects 0.000 description 1
- 108010077112 prolyl-proline Proteins 0.000 description 1
- 238000001742 protein purification Methods 0.000 description 1
- 239000011541 reaction mixture Substances 0.000 description 1
- 230000007017 scission Effects 0.000 description 1
- 239000011780 sodium chloride Substances 0.000 description 1
- 238000002415 sodium dodecyl sulfate polyacrylamide gel electrophoresis Methods 0.000 description 1
- 239000001488 sodium phosphate Substances 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- -1 sporulation Proteins 0.000 description 1
- 230000028070 sporulation Effects 0.000 description 1
- 239000011550 stock solution Substances 0.000 description 1
- 230000031068 symbiosis, encompassing mutualism through parasitism Effects 0.000 description 1
- 208000024891 symptom Diseases 0.000 description 1
- 108010061238 threonyl-glycine Proteins 0.000 description 1
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Classifications
-
- 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
- C12N9/14—Hydrolases (3)
- C12N9/16—Hydrolases (3) acting on ester bonds (3.1)
- C12N9/18—Carboxylic ester hydrolases (3.1.1)
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/20—Bacteria; Substances produced thereby or obtained therefrom
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01N—PRESERVATION OF BODIES OF HUMANS OR ANIMALS OR PLANTS OR PARTS THEREOF; BIOCIDES, e.g. AS DISINFECTANTS, AS PESTICIDES OR AS HERBICIDES; PEST REPELLANTS OR ATTRACTANTS; PLANT GROWTH REGULATORS
- A01N63/00—Biocides, pest repellants or attractants, or plant growth regulators containing microorganisms, viruses, microbial fungi, animals or substances produced by, or obtained from, microorganisms, viruses, microbial fungi or animals, e.g. enzymes or fermentates
- A01N63/50—Isolated enzymes; Isolated proteins
-
- 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
- C12N15/70—Vectors or expression systems specially adapted for E. coli
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Genetics & Genomics (AREA)
- General Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Microbiology (AREA)
- Biomedical Technology (AREA)
- Plant Pathology (AREA)
- General Engineering & Computer Science (AREA)
- Virology (AREA)
- Biochemistry (AREA)
- Agronomy & Crop Science (AREA)
- Pest Control & Pesticides (AREA)
- Molecular Biology (AREA)
- Dentistry (AREA)
- Environmental Sciences (AREA)
- Biophysics (AREA)
- Physics & Mathematics (AREA)
- Proteomics, Peptides & Aminoacids (AREA)
- Medicinal Chemistry (AREA)
- Micro-Organisms Or Cultivation Processes Thereof (AREA)
Abstract
本发明公开了一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用。本发明提供了一种群体感应信号分子降解基因aidf,所述降解基因aidf的核苷酸序列如SEQ ID No:1所示。并提供了其编码的降解酶AidF,其能够淬灭群体感应信号分子,对果胶杆菌引起的软腐病具有显著的防治效果,进一步构建得到了重组质粒和重组微生物,同样具有群体感应信号分子淬灭活性;因此,该降解基因aidf、降解酶AidF、重组质粒和重组微生物具有作为植物病害控制靶点的潜力,能够广泛用于淬灭群体感应信号分子、防治依赖群体感应信号分子介导致病的植物病害、制备依赖群体感应信号分子致病的致病菌的防治制剂中,为群体感应信号分子降解提供了有效的技术手段。
Description
技术领域
本发明属于酶基因工程技术领域。更具体地,涉及一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用。
背景技术
由胡萝卜软腐果胶杆菌胡萝卜亚种(Pectobacterium carotovorumsubsp.carotovora,Pcc)引发的细菌性软腐病已经成为世界性病害,在多国均有发生并且导致相关作物的减产,引起重大经济损失。Pcc侵染寄主植物主要是通过合成和分泌胞外酶(果胶酶、多聚半乳糖醛酸酶、蛋白酶),这些酶能够降解寄主植物的细胞壁,破坏它们的组织结构,从而Pcc可以获得水分和营养成分以支持自身生长和繁殖,侵染成功后,寄主植物出现软腐病相关症状。目前,对于由Pcc引起的软腐病,在实际生产上,主要采取的防治措施是使用化学农药(包含农用抗生素)。但是,化学农药的大量使用引发了严重的环境污染、生态平衡破坏和食品安全等一系列安全问题;此外,农药和抗生素的不恰当使用会导致致病菌产生耐药性,甚至出现多重耐药性。因此,找到一种新的绿色、有效的病害预防策略是刻不容缓的。
随着群体感应(Quorum sensing,QS)现象的发现,关于微生物群体水平行为的研究开始进行。经过数年探究,大量研究证明,QS系统广泛存在于自然界的多种动物和微生物中。在微生物中,QS参与调控多种生物学功能,如:群体移动性、共生现象、抗生素合成、胞外酶的分泌、孢子形成及基因交换等。在QS中,微生物可以产生并分泌一种或多种化学物质,这种化学物质在环境中的浓度随着微生物群体密度的增大而增加,当其浓度达到一定阈值后,微生物的某些基因开始表达,这些化学物质被称为群体感应信号分子或自诱导剂。
Pcc具有QS系统,调控着这些胞外水解酶合成。Pcc自身可以合成并分泌群体感应信号分子N-(3-oxohexanoyl)-L-homoserine lactone(OHHL,3OC6-HSL),它是革兰氏阴性细菌信号分子N-酰基高丝氨酸内酯(N-Acyl homoserine lactones,AHLs)的其中一种。3OC6-HSL作为Pcc的群体感应信号分子,其密度与胞外酶的合成和分泌密切相关。
群体淬灭(Quorum quenching,QQ)是基于QS的病害防治策略,即通过淬灭(淬灭菌或淬灭酶)致病菌的信号分子以达到控制信号分子的浓度,使其低于阈值,此时病原菌致病基因的表达不能被激活,致病性降低。这种策略在应用时,不会直接杀死致病菌,给予致病菌选择压力,所以,不会使致病菌产生抗药性。近年来,通过QQ的方式来减弱病原菌致病性的方式已经引起国际学术界的广泛关注,这种生物技术成为了防治植物病害的新热点。
目前,已从自然界中分离出大量的群体感应淬灭菌(如CN201810843540.4、CN201910837948.5),但由于微生物之间的相互作用十分复杂,若直接应用群体感应淬灭菌去防治病害,则出现的不可控因素太多,需要很多实验和调查来确保某种淬灭菌的安全应用。此外,利用生物技术构建的基因工程淬灭菌也具有QQ活性,但由于其没有在自然界进行过进化和适应过程,所以使用起来效果并不理想(Liu P F et al.AhlX,an N-acylhomoserine lactonase with unique properties[J].Marine Drugs,2019)。因此,挖掘具有群体淬灭活性的淬灭酶是目前研究的努力方向。
发明内容
本发明要解决的技术问题是克服现有上述技术存在的缺陷和不足,提供一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用
本发明的目的是提供一种群体感应信号分子降解基因aidf。
本发明另一目的是提供所述降解基因aidf编码的降解酶AidF。
本发明又一目的是提供一种重组质粒。
本发明又一目的是提供一种重组微生物。
本发明再一目的是提供所述降解基因aidf、所述降解酶AidF、所述重组质粒或所述重组微生物在淬灭群体感应信号分子中的应用,或在制备淬灭群体感应信号分子的产品中的应用;以及在防治依赖群体感应信号分子介导致病的植物病害中的应用,或在制备依赖群体感应信号分子致病的致病菌的防治制剂中的应用。
本发明上述目的通过以下技术方案实现:
本发明从中间苍白杆菌(Ochrobactrum intermedium)D-2中克隆得到了一种群体感应信号分子降解基因aidf,其核苷酸序列如SEQ ID No:1所示,序列长度为816bp,G+C含量为62%。
本发明还提供了所述降解基因aidf编码的降解酶AidF,所述降解酶AidF的氨基酸序列如SEQ ID No:2所示,其由271个氨基酸(aa)组成,预测分子量为29.3kDa,等电点为4.95。
本发明还提供了一种重组质粒,包含所述降解基因aidf或其片段,或能够表达出所述的降解酶AidF。
优选地,所述重组质粒为pET28b-aidF。
本发明还提供了一种重组微生物,能够表达所述降解基因aidf或其片段,或能够表达出所述的降解酶AidF。
优选地,所述重组微生物为E.coli BL21(DE3)/pET28b-aidF。
本发明研究发现,构建得到的重组微生物E.coli BL21(DE3)/pET28b-aidF具有淬灭AHLs的活性,即降解基因aidf编码的降解酶AidF能够淬灭AHLs;且降解酶AidF对Pcc Z3-3引起的萝卜软腐病具有显著的生物防治效果。因此,以下应用均应在本发明的保护范围之内:
所述降解基因aidf、所述降解酶AidF、所述重组质粒或所述重组微生物在淬灭群体感应信号分子中的应用。
所述降解基因aidf、所述降解酶AidF、所述重组质粒或所述重组微生物在制备淬灭群体感应信号分子的产品中的应用。
所述降解基因aidf、所述降解酶AidF、所述重组质粒或所述重组微生物在防治依赖群体感应信号分子介导致病的植物病害中的应用。
所述降解基因aidf、所述降解酶AidF、所述重组质粒或所述重组微生物在制备依赖群体感应信号分子致病的致病菌的防治制剂中的应用。
优选地,所述群体感应信号分子为N-酰基高丝氨酸内酯。
更优选地,所述N-酰基高丝氨酸内酯为OHHL或3OC6-HSL。
优选地,所述依赖群体感应信号分子介导致病的植物病害为软腐病,如萝卜软腐病。
优选地,所述依赖群体感应信号分子致病的致病菌为果胶杆菌(Pectobacteriumsp.)。
更优选地,所述果胶杆菌(Pectobacterium sp.)为胡萝卜软腐果胶杆菌胡萝卜亚种(Pectobacterium carotovorum subsp.carotovora,Pcc)Z3-3。
本发明具有以下有益效果:
本发明从中间苍白杆菌D-2中克隆得到了一种群体感应信号分子降解基因aidf,该降解基因aidf编码的降解酶AidF能够淬灭群体感应信号分子,且对果胶杆菌引起的软腐病具有显著的生物防治效果,并进一步构建得到了具有群体感应信号分子淬灭活性的重组质粒和重组微生物;因此,该降解基因aidf、降解酶AidF、重组质粒和重组微生物在淬灭群体感应信号分子、制备淬灭群体感应信号分子的产品,以及在防治依赖群体感应信号分子介导致病的植物病害、制备依赖群体感应信号分子致病的致病菌的防治制剂中有很好的应用潜力。
另外,本发明体现了群体感应信号分子的降解酶AidF具有作为植物病害控制靶点的潜力,能够为群体感应信号分子降解提供有效的生物技术手段,对基于降解群体感应信号分子的植物病害的防控具有重要意义。
附图说明
图1是降解酶AidF的表达及纯化结果图;其中,M:Marker;1、2泳道:E.coli BL21(DE3)pET-28b加IPTG诱导;3、4泳道:E.coli BL21(DE3)/pET28b-aidF不加IPTG诱导;5、6泳道:E.coli BL21(DE3)/pET-28b-aidF加IPTG诱导。
图2是降解酶AidF淬灭活性的测定结果图;其中,A:3OC6-HSL;B:E.coli BL21(DE3)pET28b粗酶液+3OC6-HSL(+IPTG);C:E.coli BL21(DE3)/pET28b-aidF粗酶液+3OC6-HSL(-IPTG);D:E.coli BL21(DE3)/pET28b-aidF粗酶液+3OC6-HSL(+IPTG)。
图3是降解酶AidF对萝卜软腐病的生防效果测定结果图;其中,A:PBS;B:Pcc Z3-3+PBS;C:Pcc Z3-3+E.coli BL21(DE3)pET-28b粗酶液;D:Pcc Z3-3+纯化后的降解酶AidF。
图4是四个实验组中白萝卜的腐烂面积百分比柱状图。
具体实施方式
以下结合具体实施例来进一步说明本发明,但实施例并不对本发明做任何形式的限定。除非特别说明,本发明采用的试剂、方法和设备为本技术领域常规试剂、方法和设备。
除非特别说明,以下实施例所用试剂和材料均为市购。
实施例1降解酶AidF的表达及纯化
1、实验方法
本实施例从中间苍白杆菌(Ochrobactrum intermedium)D-2(已在申请号为CN201810843540.4的发明专利中公开保藏)中克隆得到了一种群体感应信号分子(AHLs)降解基因aidf,其核苷酸序列如SEQ ID No:1所示,序列长度为816bp,G+C含量为62%。
该降解基因aidf能够编码降解酶AidF,其由271个氨基酸(aa)组成,预测分子量为29.3kDa,等电点为4.95。该降解酶AidF表达及纯化的方法,具体包括以下步骤:
(1)根据降解基因aidf的核苷酸序列(SEQ ID No:1)设计序列如表1所示的引物aidF-F/R,利用该引物,以中间苍白杆菌D-2的DNA为模板进行PCR扩增,得到降解基因aidf的DNA片段,并亚克隆到表达载体pET28b上,构建得到重组质粒pET28b-aidF;然后将该重组质粒pET28b-aidF转入Escherichia coli BL21(DE3)中,获得重组微生物E.coli BL21(DE3)/pET28b-aidF。
表1引物aidF-F/R的序列
注:下划线标记的分别为引物aidF-F、引物aidF-R的BamH I(GGATCC)和Xho I(CTCGAG)酶切位点。
(2)将E.coli BL21(DE3)/pET28b-aidF的单菌落接种至5mL的LB培养基中(Kan 50μg/mL),在30℃,200rpm的条件下,进行过夜培养,得到种子液。将种子液按1:100的比例转接至含600mL LB液体培养基的三角瓶中,37℃,200rpm,培养至OD600=0.6。往三角瓶中加入IPTG使其终浓度为0.8mM,之后在18℃,150rpm,诱导表达12h,获得发酵液。在4℃条件下对发酵液进行高速离心(10000rpm,10min),弃掉上清。每100mg湿菌加入1mL结合缓冲液Buffer A(20mM磷酸钠,0.5M NaCl,20mM咪唑,pH 7.4)重悬菌体。冰浴条件下进行超声破碎,破碎总时间10min(工作5s,间隔3s),共破碎2次。将细胞破碎液于1000rpm,4℃离心20min,将上清与沉淀分开,将上清转移至50mL离心管,然后用0.22μM微孔过滤器过滤,收集上清,即粗酶液,用于亲和纯化。同时设置E.coli BL21(DE3)pET28b加IPTG诱导、E.coliBL21(DE3)/pET28b-aidF不加IPTG诱导的对照。利用蛋白纯化仪进行降解酶AidF的纯化,通过SDS-PAGE分析降解酶AidF的大小及纯度。
2、实验结果
降解酶AidF的表达及纯化结果如图1所示,可以看出,5和6泳道成功表达得到了降解酶AidF,说明本发明利用E.coli BL21(DE3)/pET-28b-aidF加IPTG诱导能够成功制备得到降解酶AidF。
实施例2降解酶AidF淬灭活性的测定
1、实验方法
为了验证降解酶AidF是否具有AHLs(3OC6-HSL)淬灭活性,本实施例利用报告菌株根癌农杆菌(Agrobacterium tumefaciens)CF11进行了验证实验,具体包括以下步骤:
设置4个实验组:(1)实验组A:(仅含3OC6-HSL);(2)实验组B:E.coli BL21(DE3)pET28b粗酶液+3OC6-HSL(+IPTG);(3)实验组C:E.coli BL21(DE3)/pET28b-aidF粗酶液+3OC6-HSL(-IPTG);(4)实验组D:E.coli BL21(DE3)/pET28b-aidF粗酶液+3OC6-HSL(+IPTG)。
反应体系为:10μL粗酶液+189.9μL PBS+0.1μL 3OC6-HSL母液。在28℃静置反应30min后,取5μL反应混合物点样至1cm宽的MM琼脂条顶端,然后在下方点一排可以检测AHLs的报告菌株根癌农杆菌CF11,其中,MM琼脂条的pH值为6.5,琼脂条中含有40μg/mL的X-gal。将MM琼脂条放置在28℃培养箱,避光培养24h后,观察各实验组琼脂条上是否含有变为蓝色的单菌落(单菌落变蓝,说明相应样品中含有3OC6-HSL,变蓝的单菌落越多,则说明样品中3OC6-HSL的浓度越高)。
2、实验结果
降解酶AidF淬灭活性的测定结果如图2所示,可以看出,实验组A和实验组B的琼脂条上有部分菌落变为蓝色,实验组C和实验组D的琼脂条上没有菌落变为蓝色;说明实验组A和实验组B中均含有3OC6-HSL,且浓度相同,而实验组C和实验组D中不含有3OC6-HSL。
以上结果表明:E.coli BL21(DE3)pET28b不具有淬灭AHLs(3OC6-HSL)的活性,而E.coli BL21(DE3)/pET28b-aidF具有淬灭3OC6-HSL的活性,即降解基因aidf编码的降解酶AidF能够淬灭AHLs。
实施例3降解酶AidF对萝卜软腐病的生防效果测定
1、实验方法
本实施例以引起十字花科作物软腐病的病原菌-胡萝卜软腐果胶杆菌胡萝卜亚种(Pectobacterium carotovorum subsp.carotovora,Pcc)Z3-3为例,研究降解酶AidF对依赖AHLs致病的致病菌的生防效果,具体包括以下步骤:
(1)将Pcc Z3-3单菌落接种至LB培养基中,30℃,200rpm培养8h后,离心获得菌体。用PBS缓冲液洗菌2次后,进行重悬,使重悬液中Pcc Z3-3的OD600=0.3。取50μLPcc Z3-3重悬液,均匀涂布于每片白萝卜(第一组实验组中的白萝卜片涂布50μL PBS)。
(2)取PBS缓冲液、E.coli BL21(DE3)pET-28b粗酶液和纯化后的降解酶AidF各100μL,均匀涂布在厚度相同的白萝卜切片上(第一组实验组中的白萝卜片涂布100μL PBS),晾干多余水分后,用保鲜膜密封后放置在30℃培养。每隔8h取出,并再次各自涂布100μL的取PBS缓冲液、E.coli BL21(DE3)pET-28b粗酶液和纯化后的降解酶AidF(第一组实验组中的白萝卜片涂布100μL PBS),晾干多于水分后放置在30℃培养。即分别设置PBS、Pcc Z3-3+PBS、Pcc Z3-3+E.coli BL21(DE3)pET-28b粗酶液、Pcc Z3-3+纯化后的降解酶AidF,四个实验组。每隔8h进行实验结果的观察。
其中,E.coli BL21(DE3)pET-28b的粗酶液的获取方法参考E.coli BL21(DE3)pET-28b-aidF粗酶液的获取方法。
2、实验结果
降解酶AidF对萝卜软腐病的生防效果测定结果如图3所示,四个实验组中白萝卜的腐烂面积百分比柱状图如图4所示,可以看出,只涂布了PBS的白萝卜片没有出现腐烂,说明PBS不具有致病性;涂布了Pcc Z3-3和PBS,以及涂布了Pcc Z3-3和E.coli BL21(DE3)pET-28b粗酶液的白萝卜,已经严重腐烂;而涂布了Pcc Z3-3和降解酶AidF的白萝卜只出现轻微腐烂。其中,四个实验组(PBS、Pcc Z3-3+PBS、Pcc Z3-3+E.coli BL21(DE3)pET-28b粗酶液、Pcc Z3-3+纯化后的降解酶AidF)中,白萝卜的腐烂面积百分比分别为0%,95.29%,95.00%,13.14%。
以上结果表明:未使用降解酶AidF的白萝卜约95.00%的组织腐烂,而使用了降解酶AidF的白萝卜只有13.14%的组织腐烂;即降解酶AidF对Pcc Z3-3引起的白萝卜软腐病具有显著的生物防治效果。
上述实施例为本发明较佳的实施方式,但本发明的实施方式并不受上述实施例的限制,其他的任何未背离本发明的精神实质与原理下所作的改变、修饰、替代、组合、简化,均应为等效的置换方式,都包含在本发明的保护范围之内。
序列表
<110> 华南农业大学
<120> 一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用
<160> 2
<170> SIPOSequenceListing 1.0
<210> 1
<211> 816
<212> DNA
<213> 人工序列(Artificial Sequence)
<400> 1
atgacgatca attatcgcga gcttgaaacc agccacggca gaattgccat tcgtgaaagc 60
gcgggcgagg ggatgccgct tctgatgatc cacggcaatt ccagcgcagg cgcaatcttc 120
gcgccccagc ttgaaggcga gattggccgg aactggcgga taatcgcgcc ggacctgccg 180
ggccatggcc ggtcgggcga tgcgctcgat ccggaccgca gctattccat ggagggctat 240
gccgacgcga tgacggaggt tctcgaaaaa ctcggcattt ccgaggcggt cgtctttggc 300
tggtcgctcg gcggccatat cggcatcgag atgatctcgc gctttcccgg catgcgcggc 360
ctgatgatta ccggcacgcc gcccgtggcg cgggaggaag tggggcaagg gttcaagagc 420
ggtcccgaca tggcgctggc ggggcaggaa gtcttttccg cccgcgatgt cgaatcctac 480
gcgcgcagca cctgcggcga accgttcgaa gaagggttgc tcgatattgt tgcccgcacg 540
gacggacgcg cgcggcgcat catgttcgag aagtttgcag ccgggaccgg cggaaaccag 600
cgcgatatcg ttgccgcggc gacgcttccc atagctgtgg tcaacggggg cgacgagcct 660
ttcgtcgaac tggatttcgt ctcgaaagtc cggttcggca atctgtggga aggcaaggcc 720
cacatcatcg acggggcagg gcatgccccc ttccgcgaga caccagccgt cttcgatgcg 780
tatcttgagc gcttcatgcg cgactgcacc gtttga 816
<210> 2
<211> 271
<212> PRT
<213> 人工序列(Artificial Sequence)
<400> 2
Met Thr Ile Asn Tyr Arg Glu Leu Glu Thr Ser His Gly Arg Ile Ala
1 5 10 15
Ile Arg Glu Ser Ala Gly Glu Gly Met Pro Leu Leu Met Ile His Gly
20 25 30
Asn Ser Ser Ala Gly Ala Ile Phe Ala Pro Gln Leu Glu Gly Glu Ile
35 40 45
Gly Arg Asn Trp Arg Ile Ile Ala Pro Asp Leu Pro Gly His Gly Arg
50 55 60
Ser Gly Asp Ala Leu Asp Pro Asp Arg Ser Tyr Ser Met Glu Gly Tyr
65 70 75 80
Ala Asp Ala Met Thr Glu Val Leu Glu Lys Leu Gly Ile Ser Glu Ala
85 90 95
Val Val Phe Gly Trp Ser Leu Gly Gly His Ile Gly Ile Glu Met Ile
100 105 110
Ser Arg Phe Pro Gly Met Arg Gly Leu Met Ile Thr Gly Thr Pro Pro
115 120 125
Val Ala Arg Glu Glu Val Gly Gln Gly Phe Lys Ser Gly Pro Asp Met
130 135 140
Ala Leu Ala Gly Gln Glu Val Phe Ser Ala Arg Asp Val Glu Ser Tyr
145 150 155 160
Ala Arg Ser Thr Cys Gly Glu Pro Phe Glu Glu Gly Leu Leu Asp Ile
165 170 175
Val Ala Arg Thr Asp Gly Arg Ala Arg Arg Ile Met Phe Glu Lys Phe
180 185 190
Ala Ala Gly Thr Gly Gly Asn Gln Arg Asp Ile Val Ala Ala Ala Thr
195 200 205
Leu Pro Ile Ala Val Val Asn Gly Gly Asp Glu Pro Phe Val Glu Leu
210 215 220
Asp Phe Val Ser Lys Val Arg Phe Gly Asn Leu Trp Glu Gly Lys Ala
225 230 235 240
His Ile Ile Asp Gly Ala Gly His Ala Pro Phe Arg Glu Thr Pro Ala
245 250 255
Val Phe Asp Ala Tyr Leu Glu Arg Phe Met Arg Asp Cys Thr Val
260 265 270
Claims (10)
1.一种群体感应信号分子降解基因aidf,其特征在于,所述降解基因aidf的核苷酸序列如SEQ ID No:1所示。
2.权利要求1所述降解基因aidf编码的降解酶AidF,其特征在于,所述降解酶AidF的氨基酸序列如SEQ ID No:2所示。
3.一种重组质粒,其特征在于,包含权利要求1所述降解基因aidf或其片段,或能够表达出权利要求2所述的降解酶AidF。
4.一种重组微生物,其特征在于,能够表达权利要求1所述降解基因aidf或其片段,或能够表达出权利要求2所述的降解酶AidF。
5.权利要求1所述降解基因aidf、权利要求2所述降解酶AidF、权利要求3所述重组质粒或权利要求4所述重组微生物在淬灭群体感应信号分子中的应用。
6.权利要求1所述降解基因aidf、权利要求2所述降解酶AidF、权利要求3所述重组质粒或权利要求4所述重组微生物在制备淬灭群体感应信号分子的产品中的应用。
7.权利要求1所述降解基因aidf、权利要求2所述降解酶AidF、权利要求3所述重组质粒或权利要求4所述重组微生物在防治依赖群体感应信号分子介导致病的植物病害中的应用。
8.权利要求1所述降解基因aidf、权利要求2所述降解酶AidF、权利要求3所述重组质粒或权利要求4所述重组微生物在制备依赖群体感应信号分子致病的致病菌的防治制剂中的应用。
9.根据权利要求5~8任一所述的应用,其特征在于,所述群体感应信号分子为N-酰基高丝氨酸内酯。
10.根据权利要求9所述的应用,其特征在于,所述N-酰基高丝氨酸内酯为OHHL或3OC6-HSL。
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010517462.6A CN111778266A (zh) | 2020-06-09 | 2020-06-09 | 一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用 |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN202010517462.6A CN111778266A (zh) | 2020-06-09 | 2020-06-09 | 一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用 |
Publications (1)
Publication Number | Publication Date |
---|---|
CN111778266A true CN111778266A (zh) | 2020-10-16 |
Family
ID=72753772
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN202010517462.6A Pending CN111778266A (zh) | 2020-06-09 | 2020-06-09 | 一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用 |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN111778266A (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113106111A (zh) * | 2021-03-22 | 2021-07-13 | 华南农业大学 | 一种N-酰基高丝氨酸内酯酰基转移酶编码基因aigC及其应用 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102212508A (zh) * | 2011-04-01 | 2011-10-12 | 中国农业科学院饲料研究所 | 高比活耐热N-酰基高丝氨酸内酯酶AiiA-AIO6及其编码基因与应用 |
CN103275949A (zh) * | 2013-05-24 | 2013-09-04 | 中国农业科学院饲料研究所 | 一种群体感应淬灭酶olb-26及其编码基因和应用 |
CN103275913A (zh) * | 2013-05-24 | 2013-09-04 | 中国农业科学院饲料研究所 | 一种具自溶功能的重组菌及其制备方法与应用 |
CN109182159A (zh) * | 2018-07-27 | 2019-01-11 | 华南农业大学 | 一种n-酰基高丝氨酸内酯淬灭菌及其在病害防控中的应用 |
-
2020
- 2020-06-09 CN CN202010517462.6A patent/CN111778266A/zh active Pending
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102212508A (zh) * | 2011-04-01 | 2011-10-12 | 中国农业科学院饲料研究所 | 高比活耐热N-酰基高丝氨酸内酯酶AiiA-AIO6及其编码基因与应用 |
CN103275949A (zh) * | 2013-05-24 | 2013-09-04 | 中国农业科学院饲料研究所 | 一种群体感应淬灭酶olb-26及其编码基因和应用 |
CN103275913A (zh) * | 2013-05-24 | 2013-09-04 | 中国农业科学院饲料研究所 | 一种具自溶功能的重组菌及其制备方法与应用 |
CN109182159A (zh) * | 2018-07-27 | 2019-01-11 | 华南农业大学 | 一种n-酰基高丝氨酸内酯淬灭菌及其在病害防控中的应用 |
Non-Patent Citations (1)
Title |
---|
XINGHUI FAN 等: "Potential of a Quorum Quenching Bacteria Isolate Ochrobactrum intermedium D-2 Against Soft Rot Pathogen Pectobacterium carotovorum subsp. carotovorum", 《FRONTIERS IN MICROBIOLOGY》 * |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN113106111A (zh) * | 2021-03-22 | 2021-07-13 | 华南农业大学 | 一种N-酰基高丝氨酸内酯酰基转移酶编码基因aigC及其应用 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN108048373B (zh) | 一株枯草芽孢杆菌ah1005及其应用 | |
CN101338319B (zh) | 表达harpin蛋白的重组载体pM43HF及其工程菌 | |
CN107022010B (zh) | 一种新的杀虫蛋白及其核苷酸序列 | |
CN113831395B (zh) | 一种重组抗菌肽TrSub、制备方法及其应用 | |
CN112048514B (zh) | 一种噬菌体trp574基因及其应用 | |
CN112210503B (zh) | 一株转噬菌体trp574基因的无致病力青枯菌株及其制备方法和应用 | |
CN115960762B (zh) | 一种极端东方假单胞菌及其应用 | |
CN105238809A (zh) | 抗菌肽cc31在枯草芽孢杆菌中的表达方法 | |
CN111004737B (zh) | 一种微生物群体感应信号淬灭菌及其在病害防控中的应用 | |
CN102174557A (zh) | 一种表面展示家蚕乙醇脱氢酶重组芽孢及其制备方法 | |
CN111778266A (zh) | 一种群体感应信号分子降解基因aidf及其编码的降解酶AidF和应用 | |
CN102604869B (zh) | 防治西瓜细菌性果斑病生防菌株1jn2及其应用 | |
CN106916831A (zh) | 一种黄单胞菌致病相关的基因的应用 | |
CN109306336B (zh) | 以群体感应信号分子AHLs为靶标的病害防治菌株及其应用 | |
CN114891806B (zh) | 一种魏氏柠檬酸杆菌yqjH基因敲除突变株及其应用 | |
CN111139207B (zh) | 一种短短芽孢杆菌基因重组菌株及其制备方法和应用 | |
CN109810956B (zh) | 棉酚降解酶higd及其编码基因和应用 | |
CN109251936B (zh) | 一种光滑鳖甲丝氨酸蛋白酶抑制剂融合蛋白及制备与应用 | |
CN113832117A (zh) | 一种降解氧四环素的酶及其编码基因和应用 | |
Cheng et al. | Extracellular genomic DNA mediates enhancement of Xylella fastidiosa biofilm formation in vitro | |
CN102408475B (zh) | 一种Bt蛋白Cyt1Da1、其编码基因及应用 | |
CN101565462B (zh) | 大黄鱼bpi-bn蛋白质、引物及其在制备抗生素药物中的应用 | |
CN113122553B (zh) | 一种N-酰基高丝氨酸内酯酰基转移酶编码基因aigA及其应用 | |
CN110105433A (zh) | 新型乳酸菌抗菌肽及高效表达及抗菌抗癌活性的应用 | |
CN113106111B (zh) | 一种N-酰基高丝氨酸内酯酰基转移酶编码基因aigC及其应用 |
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 | ||
RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201016 |
|
RJ01 | Rejection of invention patent application after publication |