WO1998035030A1 - Cycle c4 de type pck - Google Patents
Cycle c4 de type pck Download PDFInfo
- Publication number
- WO1998035030A1 WO1998035030A1 PCT/JP1998/000537 JP9800537W WO9835030A1 WO 1998035030 A1 WO1998035030 A1 WO 1998035030A1 JP 9800537 W JP9800537 W JP 9800537W WO 9835030 A1 WO9835030 A1 WO 9835030A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- gene
- plant
- plants
- rice
- photosynthetic
- Prior art date
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Classifications
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- 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
- C12N9/88—Lyases (4.)
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- 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
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- 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
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- 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
- C12N15/8261—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield
- C12N15/8262—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield involving plant development
- C12N15/8269—Photosynthesis
Definitions
- the present invention relates to a method for transforming a C3 plant that imparts the C4 cycle by introducing a plurality of enzymes that contribute to the C4 photosynthetic cycle into the C3 plant.
- C4 The leaf tissue of a plant that photosynthesizes C4 (C4 plant) is composed of mesophyll cells and vascular sheath cells around the vascular bundle, and has a special leaf tissue structure called crunch-type leaf structure.
- C4 plants fix atmospheric carbon dioxide in the form of C4 compounds using phosphoenolpyruvate carboxylase (hereinafter sometimes referred to as PEPC) localized in the cytoplasm of mesophyll cells.
- PEPC phosphoenolpyruvate carboxylase
- the two types of cells in the green leaf of the C4 plant are functionally differentiated, the mesophyll cells generate the C4 compound and regenerate the substrate of PEP C by the initial carbon fixation, and the vascular sheath cells the C4 compound. And real carbon fixation by the Calvin-Benson circuit.
- C4 photosynthesis circuit The three processes of carbon fixation by PEP C, release of carbon dioxide in the vicinity of Ru bisco by decarboxylase, and regeneration of ATP-consuming PEP C substrate form a circuit reaction called the C4 photosynthesis circuit.
- This circuit reaction involves the normal photosynthesis (C3-type photosynthesis) of the C4 plant, which functions as a carbonic acid concentrating function, avoiding a decrease in the efficiency of the photochemical system due to overproduction of ATP under strong light conditions (avoiding light damage), and a water stress tolerance function. (C 3 plants) do not have the apparent light respiration observed in C 3 plants. The decrease in photosynthetic capacity under strong light conditions and high temperature conditions is small. Therefore, it can be said that C4 plants have better photosynthetic ability than C3 plants.
- Hudspeth et al. Hudspeth et. Al., Plant Physiol., (1992) 98: 458-4 64.
- the PEP C gene is located downstream of the tobacco chlorophyll a / b binding protein promoter (cab promoter, ichimoichi). It has been reported that PEP C activity of green leaves increased twice and malic acid content of leaves increased, and that Kogami et al. (Kogami et al., Transgenic Research (1994) 3: 287-296) reported that when PEPC gene was ligated downstream of the cariplasmic mosaic virus 35S promoter and introduced into evening bamboo, the leaf PEPC activity was doubled.
- PCK phosphoenolpyruvate carboxykinase
- An object of the present invention is to provide a C3 plant with a C4 photosynthetic circuit by introducing a plurality of enzymes contributing to the C4 photosynthetic circuit in order to improve the photosynthetic ability of the C3 plant. It is to provide a method for transforming three plants.
- Another object of the present invention is to provide a transformed plant to which a C4 circuit has been imparted by this transformation method.
- Still another object of the present invention is to provide a vector for this transformation.
- FIG. 1 is a schematic diagram showing a PCK type C4 photosynthesis circuit.
- FIG. 2 is a schematic diagram showing the constructed genes used for transformation.
- FIG. 3 is a graph showing the change over time of the labeled carbon compound.
- FIG. 4 is a graph showing the photosynthetic activity of the transformed rice.
- the present inventors have conducted intensive studies and found that, by introducing a gene encoding PEPC and a gene encoding PCK to which a gene encoding transit peptide is linked into a C3 plant, It is a solution to the problem.
- the present inventors express the gene involved in C4 photosynthesis alone in the cytoplasm in the prior art, so it is possible to impart the activity of the introduced enzyme to C3 plants, but the C4 photosynthetic circuit We thought that the improvement of rotation and photosynthetic capacity could not be achieved.
- the intracellular localization of the enzyme to be introduced is limited, the cytoplasm is regarded as a mesophyll cell of a C4 plant, and the chloroplast is regarded as a vascular sheath cell of a C4 plant.
- the cytoplasm is regarded as a mesophyll cell of a C4 plant
- the chloroplast is regarded as a vascular sheath cell of a C4 plant.
- it rotates a circuit reaction similar to the C4 photosynthetic cycle of the C4 plant in the mesophyll cells of the C3 plant, thereby causing the chloroplasts to emit carbon dioxide.
- a function of increasing the carbon concentration and a function of avoiding light damage by consuming ATP can be provided. Plants to which these abilities have been imparted have improved photosynthetic ability to improve dry matter productivity, drought tolerance, high temperature tolerance, strong light tolerance, and low carbon dioxide conditions. It is expected that the photosynthetic capacity
- PEPC which is the first carbonic anhydrase of C4 plants
- cytoplasm in the mesophyll cells of the green leaves of C3 plants (rice) to remove C4 compounds.
- Carbonic acid acts in the chloroplast, and an enzyme for regenerating PEP is simultaneously expressed either in the cytoplasm or in the chloroplast.
- PCK is used as a decarboxylase for this purpose. Is haccho? Since PCK is used as an enzyme to decarboxylate oxalate and decarbonate acetic acid, PCK can be used as a decarboxylase to perform decarboxylation, ATP consumption, and PEP regeneration with one enzyme. In order for this decarboxylase to exert its action in chloroplasts, a gene encoding this enzyme is used in connection with a gene encoding a transit peptide. Transit peptides convert decarboxylase expressed in the cytoplasm into chloroplasts And allows decarboxylase to work in the chloroplast.
- the cytoplasm is regarded as the mesophyll cell of the C4 plant
- the chloroplast is regarded as the vascular sheath cell of the C4 plant.
- the target C 4 photosynthetic circuit is formed only by PEPC, decarboxylase, and the enzyme that regenerates PEP.
- PEPC in order to supply bicarbonate, a direct substrate of PEPC, to the cytoplasm, Alternatively, CA may be simultaneously expressed in the cytoplasm to make the flow of the C4 photosynthesis circuit smoother.
- PEPC, PC In addition to CA, in order to increase the supply of PEP, a substrate for PEPC, P PDK, an enzyme that generates PEP from pyruvate, is simultaneously expressed to further smooth the flow of the C4 photosynthesis circuit. It is also possible to use
- the present invention provides a C3 plant with a C4 photosynthesis circuit by introducing a gene encoding PEPC and a gene encoding PCK to which a gene encoding a transit peptide is linked into a C3 plant. This is a method for transforming three plants.
- PEPC used in the present invention
- bacteria derived from bacteria include those derived from coryneform / glutamic acid producing bacteria (Japanese Patent Publication No. 7-83714).
- preferred PEPCs are derived from plants, for example, those derived from corn (Japanese Patent Publication No. 6-30587) and those derived from amaranth (Rydzik, E. and Berry, J.0., Plant Physiol.
- the PCK-encoding gene used in the present invention is preferably derived from plants and bacteria encoding ATP-dependent PCK
- the plant-derived gene is, for example, one derived from Perochloa panicoides ( JP-A-8-80197), those derived from cucumber (Kim, D.-J. and Smith, SM, Plant Mol.Biol., (1994) 26: 423-434), and the like, and those derived from bacteria. Escherichia coli (Medi na, V. et al., J. Bacteriol., (1990) 172: 7151-7156), and those derived from Rhizopium family bacteria (Osteras, M. et al., J. Bacteriol., (1995) 177: 1452-1460), but those derived from plants are preferred, and those derived from Peroclor'panicoides are particularly preferred.
- PCK needs to exert its action in chloroplasts as described above. Therefore, it is necessary to use a transit sequence in conjunction with the gene sequence encoding PCK.
- the transit sequence to be linked has been reported to be derived from a chloroplast-localized protein of many plants (Keegstra, K. et al., Annu. Rev. Plant Mol. Biol., (1989) 40: 471-501), but in the present invention, a rice-derived sequence is preferable, and particularly preferably, the rice rubisco small subunit represented by SEQ ID NO: 2 obtained by the method of Examples described later.
- a rice-derived sequence is preferable, and particularly preferably, the rice rubisco small subunit represented by SEQ ID NO: 2 obtained by the method of Examples described later.
- Is an array of The transit sequence links the open reading frame to the PCK gene upstream of the gene encoding the PCK.
- the transit sequence is directly ligated upstream of the PCK structural gene.
- a CA-encoding gene may be introduced into C3 plants in order to supply carbonate ions, which are direct substrates of PEPC, to the cytoplasm.
- genes encoding CA used here are derived from animals and plants. However, the similarity of the nucleotide sequence between the gene encoding CA derived from higher plants and that derived from other organisms is low. Enzymatic activity of CA in higher plants is controlled by inorganic phosphate (Sultemeyer, D. et al., Physiol. Plant., (1993) 88: 179-19 0). Therefore, the genes to be used are preferably those derived from higher plants, and those derived from higher plants include those derived from spinach (Burnell et al., Plant Phy siol. (1990) 92: 37-40) and those derived from endu. (Roeske, CA and Ogren, WL, Nuc.
- Examples of the PPDK-encoding gene used in the present invention include maize C4-type PPDK gene (Matsuoka, M. et al., J. Biol. Chem., (1988) 263: 110 80-11083), and rice-derived genes. (Japanese Patent Application Laid-Open No. 7-184657), derived from Flaverian pudding gray (Rosche, E. et al., Plant Mol. Biol., (1994) 26: 763-769), Mesembriantemum 'Chris And Talinum-derived (Fisslthaler. B. et al., Planta, (1995) 196: 492-500). In the present invention, the maize C4 type PPDK gene is preferred.
- the PPDK gene may be expressed in chloroplasts or in the cytoplasm.
- a sequence encoding a transit peptide is linked to the PPDK gene and used.
- the promoter sequence used in the gene encoding each of the above-mentioned enzymes is not particularly limited, but is preferably a photosynthetic organ-specific promoter sequence.
- the photosynthetic organ-specific promoter sequence include, for example, maize C4 type PPDK promoter sequence (Glackin et al., (1990) Proc. Natl. Acad. Sci. USA 87: 3004-3008), maize C4 type PEPC Promoter sequence (Hudspeth, RL and Grula, JW, Plant Mol. Biol., (1989) 12: 579-589), Rice Rubisco small subunit promoter sequence (Kyozuka, J.
- the genes encoding the enzymes involved in the C4 circuit may be separately introduced and transformed into C3 plants as construction genes for gene transfer, but preferably, each gene is the same gene. It is preferable that the gene be ligated to the transgene and then transfected and transformed into a C3 plant. There are no special restrictions on the order of the genes.
- the above-described construct gene is inserted into the selected C3 plant cell according to a conventional method.
- the method of introduction include conventional methods such as an electoral poration method, an electoral injection method, a method using a chemical treatment such as PEG, and a method using a gene gun.
- each gene is obtained using the agrobacterium method. It is preferable to introduce and transform into a C3 plant.
- the agrobacterium method is well known in the art, and is used for dicotyledonous plants (for example, Japanese Patent Application Laid-Open No. 4-330234) and monocotyledonous plants (W ⁇ 94 / 0997). 7) can also be used for transformation. Plants that have been successfully transformed can be selected by the method described below.
- the genetic traits of the transformed plants can be fixed by common breeding methods and the introduced genes can be transmitted to progeny plants.
- this technique can be applied to any C3 plant, but in particular, the photosynthetic ability of rice, wheat, corn, soybean, potato, tobacco, rape, etc. is improved. This is useful for crops that are expected to improve dry matter productivity.
- it is preferably applied to monocotyledonous plants, particularly preferably to rice.
- the C4 photosynthetic circuit in the present invention includes, as described above, three processes of carbonic acid fixation by PEPC, release of carbon dioxide near Rubisco by decarboxylase, and regeneration of the substrate of PEPC consuming ATP. Is formed.
- the DNA fragment of the maize C type 4 PDK promoter promoter region is prepared based on the known nucleotide sequence (Glackin, CA and Grula, JW (1990) Proc. Natl. Acad. Sci. USA 87: 3004-3008) Synthetic primers
- Corn C type 4 cDNA of PEP C is a synthetic oligonucleotide prepared based on a known base sequence (Hudspeth, R.L. and Grula, J.W. (1989) Plant Mol. Biol. 12: 579-589).
- the cDNA of Perlochlore panicoides PCK used was a construct gene to which a region encoding the transit peptide portion of rice Rubisco small subunit was added. That is, APCK170204 and APCKIOOIOI were connected at the Kpn I site present in each of the inserts, and the obtained DNA fragment was used as a type II synthetic primer PCK-f2
- PCR was again performed using TP-rl and TP-rl. Then, the PCR fragment amplified by PCR was converted to a DNA fragment of about 2 kbp obtained by partial digestion of XbaI and SphI, and the transit peptide sequence DNA fragment amplified by PCR for the second time was converted to Nc A fragment of about 150 bp (sequence is shown in SEQ ID NO: 2) obtained by digestion with oI and XbaI was ligated, and the obtained DNA fragment of about 2.2 kbp was used for gene construction.
- One terminator is BI121 (Jefferson, RA (1987) Plant Mol. Biol. Rep. tr.5: 387-405), a DNA fragment of the NOS terminator region obtained by digestion with Sa1I and EcoRI, pGL2 (Bilang, R. et al. (1991) Gene 100: 247-250). Was digested with SphI and EcoRI, and a DNA fragment of a 35S terminator region obtained from the digestion was used.
- the obtained promoter DNA, cDNA, and DNA DNA fragment were ligated together in the following combination, and the plasmid was inserted into the HindIII-EcoRI site of pBluescriptllSK- (Stratagene, USA).
- a plasmid for single gene transfer was constructed.
- Plant J. (1996) 10: 165-174) was inserted into the site digested with Xbal and HindiII to construct super binary intermediate plasmids pSPK and pSCPK.
- Each of these vectors was introduced into E. coli LE392 strain, and introduced into Agrobacterium and homologous recombination ( Komari, T. et al.) By three-way cross between Agrobacterium LB A4404 / pSB4 and E. coli HB101 / PRK2013. Plant J. (1996) 10: 165-174) to construct SB4PK and PSB4CPK.
- Maize C type 4 P PDK cDNA was isolated using a known base sequence (Matsuoka, M., Ozeki, Y., Yamamoto,., Hirano, ⁇ ., Ano-Murakami, ⁇ . And Tanaka, ⁇ .: Pr. imary structure of maize pyruvate, orthophosphate dikinase as deduced fra cDNA sequence.J. Biol. Chem. 263: 11080-11083 (1990))
- 5'-TAGCTCGATGGGTTGCACGATCATATGGAGCAAGG-3 '(SEQ ID NO: 13) was used as a probe and prepared by a conventional method (Sambrook, J. et al., Supra) using ⁇ ZAP vector-1 (Stratagene, USA). The cDNA library was screened and isolated. Furthermore, a synthetic primer prepared based on a known sequence (Sheen, L: Molecular mechanisms underlying the differential expression of Maize Pyruvate, Orthophospate dikinase genes. Plant Cell 3: 225-245 (1991))
- the above-mentioned maize PPDK c DNA was used for type III by the PCR method using 5'-GTACTCCTCCACCCACTGCA-3 '(3' side) (SEQ ID NO: 15) (Mcpherson, ⁇ ⁇ J. Et al., Supra). Amplification yielded a DNA fragment of about 250 bp. This cut The piece was digested with NdeI and SacII, and replaced between the NdeI and SacII sites of the above-mentioned PPDK cDNA. This was digested with NdeI and C1aI, and a DNA fragment of about 2.9 kbp obtained as a PPDK cDNA was used for gene construction.
- the evening miner region is located in the plasmid PPGA643A (Gynheung AN, Paul R. Ebert, Amitava Mittra and Sam B. HA: binary vectors, Plant Molecular Biology Manua 1 A3: gene 19 (1988)).
- I used 7 min. 1 min. 1 min. g en e 7 miner was obtained by digesting PPGA643 (Gynheung AN et al., supra) with ClaI and KpnI.
- a plasmid was inserted between the Cpal and KpnI sites of pBluescriptllSK- (Stratagene, USA), digested with KpnI, blunt-ended, and inserted with an XbaI linker. And DNA fragments obtained by digestion with XbaI were used for gene construction.
- a plasmid pSK containing the PEPCK gene was inserted between the NcoI and XbaI sites of pSK-Di2 by inserting a DNA fragment of about 2.4 kbp obtained by digesting pDKS with NcoI and XbaI. -Created DiKS.
- a DNA fragment of about lkbp obtained by digesting pDCS described above with NcoI and XbaI was inserted between the Nc0I and Xbal sites of pSK-Di2, and the plasmid pSK- containing the CA gene was inserted. DiCS was created.
- the resulting plasmid was inserted into the plasmid pSK-CiPi.
- the XbaI site of pSK-DiDT was removed, an XbaI linker was inserted into the XhoI site, and a 4.8 kbp DNA fragment obtained by digesting this with XbaI and NotI was obtained.
- the plasmid was inserted between the XbaI and NotI sites of pSK-CiPi to prepare a plasmid pSK-CiPiDi.
- Nl 4 at X ho I site of pSK_CiPiDi An otI linker was inserted, and a DNA fragment of about 12 kbp obtained by digestion with NotI was obtained.
- pSBll Komari ⁇ ⁇ et al., Plant J. 10: 165-174 (1996) was digested with Hind III and EcoRI, blunt-ended, and a Not I linker was inserted into the Not I site.
- the above-mentioned DNA fragment of about 12 kbp was inserted into the plasmid to prepare a plasmid pSBmCiPiDi.
- a DNA fragment of about 3.3 kbp obtained by digesting with XbaI was inserted into the XbaI site of pSBmCiPiDi, and the plasmid pSBmCiPiKiDi was inserted. Created.
- transgenic rice into which PSB4P, pSB4CPK, and pSB4CiPiDiKi were introduced was performed by the agrobacterium method according to the previous report (Hiei, Y. et al. (1994) Plant J. 6: 271-282).
- the resulting transformed individuals were grown in an air-conditioned greenhouse (16 hours daylength, day: 28 ° C, night: 23 ° C).
- the triturated solution was centrifuged at 15000 at 4 for 20 minutes, and the resulting supernatant was previously subjected to column buffer (50 mM HEPES-KOH pH 7.0, 10 mM magnesium chloride) at room temperature. Desalting through NAP 5 (trade name) column (Pharmacia, Sweden) equilibrated with Nesium, 2 mM manganese chloride, ImM EDTA, 0.1% 2-mercaptoethanol, 20% glycerol) and crude extraction A liquid was obtained. The quantification of chlorophyll in the trituration solution was performed according to a previous report (Wintermans and deMots (1965) Biochem. Biophys. Acta 109: 448-453), and the quantification of the protein in the crude extract was performed using the Protein Assay Kit (trade name, Bio-Rad, USA). ).
- the obtained crude extract was subjected to SDS-PAGE so that the protein amount would be equal, and the protein in the gel was transferred to a nitrocellulose membrane. (Schleicher and Schuel, Germany), and electrotransferred to maize PEP C protein or perchlora panicoides PCK protein or spinach CA protein or maize P PDK protein.
- Each of the introduced enzyme proteins was detected using Ze-labeled goat anti-Egret IgG (U.S.A., Organon Technichiro Kappel product) and AP color kit (trade name, BioRad, U.S.A.).
- PEPC activity was measured at 25 mM HEPES-KOH H8.0, 5 mM magnesium sulfate, 4 mM dithiothreitol, 5 mM potassium bicarbonate, 0.25 mM
- PCK activity was measured using 25 mM HEPES-KOH pH 8.0, 4 mM dithiothreitol, 0.2 mM oxalate acetic acid, 1 unit pyruvate kinase (Beilinger Mannheim, Germany), 0.2 mM ATP, crude extract 501 This was performed by determining the rate of decrease in the absorption of oxaline acetic acid at 280 nm using the reaction solution containing lm1.
- PPDK activity was measured at 25 mM HEPES-KOH pH 8.0, 10 mM dithiothreitol, 10 mM potassium hydrogen carbonate, 8 mM magnesium sulfate, 5 mM ammonium chloride, 2.5 mM monopotassium hydrogen phosphate, ImM ATP, lm glucose-6-phosphate.
- the leaves were frozen in liquid nitrogen to stop bioactivity, and the leaves were left in 80% hot ethanol for about 30 minutes to elute soluble material.
- the atmosphere was taken into the system, and after 10, 30, and 90 seconds, the leaves were taken out of the assimilation box, immersed in liquid nitrogen to stop the biological activity, and soluble substances were removed with 80% hot ethanol. Eluted.
- the obtained extract was concentrated on an evaporator and used for two-dimensional thin-layer chromatography using Funacel SF cellulose thin-layer plate (trade name, 20 cm ⁇ 20 cm, Funakoshi).
- phenol-water-glacial acetic acid-0.5M EDTA (474: 84: 5.5: 1.14: V / V) is used as a one-dimensional developing solvent, and Solution A (n-butanol: water; A mixture of equal volumes of 74: 5; V / V) and solution B (propionic acid: water; 9:11; V / V) was used.
- the development is performed at room temperature. After the development is completed, the plate is dried, and the amount of the autoradiography and each spot is quantified using a Bio-Image Analyzer-BasslOO System (Fuji Photo Industry), and labeled with radioisotopes. The percentage of the identified substances was investigated.
- Example 5 Tracer experiment using [ 14 C] malic acid
- Leaves of the transformed rice and control rice (moonlight) grown in an air-conditioned greenhouse were drained and exposed to 27,000 lux for 1 hour in 10 mM phosphate buffer pH 6.4. The leaves were then plugged into a solution of 100 Ci buffer plus 1 Ci of [ 14 C] malic acid (5 wl) (Amersham, UK). After a certain period of time, the leaf pieces were taken out, the part immersed in the buffer solution was excised, and immersed in 80% boiling ethanol to stop the biological reaction, and placed in a boiling state for 30 minutes to elute soluble substances.
- the eluate is concentrated on an evaporator, subjected to two-dimensional thin-layer chromatography to separate radiolabeled substances, and subjected to autoradiography and quantification of each spot using a bioimage analyzer BaslOOO system.
- the proportion of substances labeled with radioisotopes was investigated.
- Transgenic rice and control rice (moonlight) grown in an air-conditioned greenhouse are grown for at least one day in an artificial weather device (12 hours daylength, illuminance of about 35,000 lux, 25 ° C) to acclimate to the environment.
- the photosynthetic activity of fully developed leaves before senescence had been measured using a photosynthetic transpiration analyzer (LI-6200, Leica, USA).
- transgenic rice into which the constructed gene pDPN was introduced (PEPC-introduced transformant)
- expression of the PEPC protein was confirmed in 15 individuals.
- Expression of PCK protein was confirmed in 20 of 31 transgenic rice (PCK-introduced transformants) into which the constructed gene pDKS was introduced.
- transgenic rice (CA-transformed transformants) transfected with PDCS construct gene relatively high expression of CA protein was confirmed in 3 individuals.
- Expression of two types of proteins, PEPC and PCK was confirmed in 12 out of 21 transgenic rice plants transfected with the constructed gene pSB4M (2 transgenic transformants).
- the construction gene for PCK introduction used in this example is a chimeric gene to which a region encoding the transit peptide portion of the rice Ru bisco small subunit has been added, as described previously (Japanese Patent Application Laid-Open No. 8-80197).
- the PCK protein is localized in the chloroplast by the action of the transit peptide.
- Transgenic rice 8.1.1.9 (2) transgenic rice, (3) transgenic rice, (4) transgenic rice, and It followed the subsequent behavior of (Tsukinohikari) and 5 seconds off leaves toe sorghum '4 C0 2 labeled C 4 compound after given time. Labeled C4 compounds in transformed rice showed a decreasing force over time, similar to C4 plant maize.Controlled rice showed little change in labeled C4 compounds. (See Figure 3). This indicates that in transformed rice, C4 compounds produced by carbon fixation of the introduced PEPC are immediately metabolized to other substances, similar to the changes seen in the green leaf tissue of C4 plants. Indicates that it is changing.
- the photosynthetic activity of the R1 generation of the transgenic rice transformed with the transgenic rice and the control rice was measured by changing the concentration of carbon dioxide that gives leaves, and the photosynthetic activity-intracellular carbon dioxide concentration curve ( Figure 4)
- the cell-to-cell carbon dioxide concentration (the straight-line X-axis intercept in the figure) assuming that the apparent photosynthetic activity was lost was lower in the transformed rice than in the control rice.
- This C_ ⁇ z compensation point of transformed rice have shown that lower than the control rice.
- the COz compensation point of C4 plants tends to be lower than that of C3 plants.
- the transformed rice plants have photosynthetic characteristics closer to those of C4 plants than control rice plants.
- a circuit reaction similar to the C4 photosynthetic circuit of a C4 plant is rotated in mesophyll cells of a C3 plant, the function of increasing the carbon dioxide concentration in the chloroplast, and the light damage due to ATP consumption are reduced. It is possible to provide a function of avoiding.
- plants to which these abilities have been imparted are improved in dry matter productivity and drought tolerance by improving photosynthetic ability. It can be expected to improve the sexual ability, the ability to withstand high temperature, the ability to withstand strong light, and the ability to photosynthesize under low carbon dioxide conditions.
- Sequence type nucleic acid
- Organism name Mace (Zea mays)
- Sequence type nucleic acid
- Sequence type nucleic acid
- Organism name Spinacia oleracea
- AAA AAT CCA GCA TTG TAT GGT GAG CTT TCT AAG GGC CAA GCT CCC AAG 143 Lys Asn Pro Ala Leu Tyr Gly Glu Leu Ser Lys Gly Gin Ala Pro Lys
- GCT GAA CAA TGC ACC CAT TGT GAA AAG GAA GCT GTG AAT GTA TCT CTT 527 Ala Glu Gin Cys Thr His Cys Glu Lys Glu Ala Val Asn Val Ser Leu 160 165 170 175
- Sequence type nucleic acid Number of chains: single strand
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
- Sequence type nucleic acid
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Biotechnology (AREA)
- Organic Chemistry (AREA)
- Zoology (AREA)
- Wood Science & Technology (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Molecular Biology (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Biochemistry (AREA)
- Microbiology (AREA)
- General Health & Medical Sciences (AREA)
- Physics & Mathematics (AREA)
- Plant Pathology (AREA)
- Biophysics (AREA)
- Cell Biology (AREA)
- Physiology (AREA)
- Medicinal Chemistry (AREA)
- Nutrition Science (AREA)
- Breeding Of Plants And Reproduction By Means Of Culturing (AREA)
- Enzymes And Modification Thereof (AREA)
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98901570A EP0916725B1 (en) | 1997-02-10 | 1998-02-10 | C4 cycle of pck type |
DE69837588T DE69837588T2 (de) | 1997-02-10 | 1998-02-10 | C4 zyklus des pck types |
CA002250827A CA2250827C (en) | 1997-02-10 | 1998-02-10 | Transforming a c3 plant with c4 photosynthetic pathway using phosphoenolpyruvate carboxykinase |
AU57817/98A AU729520B2 (en) | 1997-02-10 | 1998-02-10 | PCK-Type C4 cycle |
JP53414598A JP3501814B2 (ja) | 1997-02-10 | 1998-02-10 | Pck型c4回路 |
US09/155,989 US6610913B1 (en) | 1997-02-10 | 1998-02-10 | Rice plants transformed to provide a PCK-type C4 cycle and methods of making |
KR1019980708043A KR100769755B1 (ko) | 1997-02-10 | 1998-02-10 | Pck형c4회로 |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2665897 | 1997-02-10 | ||
JP9/26658 | 1997-02-10 |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US09/155,989 A-371-Of-International US6610913B1 (en) | 1997-02-10 | 1998-02-10 | Rice plants transformed to provide a PCK-type C4 cycle and methods of making |
US10/368,396 Continuation US20030221219A1 (en) | 1997-02-10 | 2003-02-20 | PCK-type C4 cycle |
Publications (1)
Publication Number | Publication Date |
---|---|
WO1998035030A1 true WO1998035030A1 (fr) | 1998-08-13 |
Family
ID=12199531
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP1998/000537 WO1998035030A1 (fr) | 1997-02-10 | 1998-02-10 | Cycle c4 de type pck |
Country Status (14)
Country | Link |
---|---|
US (2) | US6610913B1 (ja) |
EP (1) | EP0916725B1 (ja) |
JP (1) | JP3501814B2 (ja) |
KR (1) | KR100769755B1 (ja) |
CN (1) | CN1107723C (ja) |
AR (1) | AR011652A1 (ja) |
AT (1) | ATE360064T1 (ja) |
AU (1) | AU729520B2 (ja) |
CA (1) | CA2250827C (ja) |
DE (1) | DE69837588T2 (ja) |
ID (1) | ID21006A (ja) |
NZ (1) | NZ332271A (ja) |
RU (1) | RU2159813C2 (ja) |
WO (1) | WO1998035030A1 (ja) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7208318B2 (en) | 2002-05-27 | 2007-04-24 | Bayer Cropscience Ag | Method for producing plants with suppressed photorespiration and improved CO2 fixation |
JP2012518995A (ja) * | 2009-02-27 | 2012-08-23 | アドヴァンスト・テクノロジーズ(ケンブリッジ)リミテッド | ホスホエノールピルビン酸カルボキシキナーゼおよび/またはピルビン酸正リン酸ジキナーゼをコードする構築物を含む形質転換植物 |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2823064B1 (fr) * | 2001-04-04 | 2004-05-28 | Biogemma Fr | Procede d'obtention de plantes c4 a metabolisme carbone modifie |
US7642347B2 (en) * | 2006-06-23 | 2010-01-05 | Monsanto Technology Llc | Chimeric regulatory elements for gene expression in leaf mesophyll and bundle sheath cells |
BRPI0718977A2 (pt) | 2006-11-24 | 2014-02-04 | Cropdesign Nv | Método para aumentar rendimento de sementes em plantas em relação às plantas de controle, construção, uso da mesma, planta, parte de planta ou célula de planta, método para a produção de uma planta transgênica tendo redimento aumentado de sementes em relação às plantas de controle, planta transgênica, partes colhíveis de uma planta, produtos, e, uso de um ácido nucleico |
EP2503000A1 (en) * | 2007-07-31 | 2012-09-26 | BASF Plant Science GmbH | Plants having enhanced yield-related traits and a method for making the same |
DE202008005083U1 (de) * | 2008-01-22 | 2008-06-26 | Wezag Gmbh Werkzeugfabrik | Presszange |
US20140298544A1 (en) * | 2011-10-28 | 2014-10-02 | Pioneer Hi Bred International Inc | Engineered PEP carboxylase variants for improved plant productivity |
EA201591294A1 (ru) * | 2013-02-22 | 2016-01-29 | Технише Университет Делфт | Рекомбинантный микроорганизм для применения в способе с повышенным выходом продукта |
WO2014201156A1 (en) * | 2013-06-11 | 2014-12-18 | Florida State University Research Foundation, Inc. | Materials and methods for controlling bundle sheath cell fate and function in plants |
CN103805616A (zh) * | 2014-02-25 | 2014-05-21 | 河南省农业科学院小麦研究所 | 玉米c4型磷酸丙酮酸双激酶(ppdk)基因及其在小麦中的应用 |
CN108440672B (zh) * | 2018-03-13 | 2020-12-04 | 华南农业大学 | 一条光呼吸代谢改造支路及其在c3植物中的应用 |
KR102381872B1 (ko) | 2020-10-19 | 2022-04-12 | 주식회사 수앤그린테크 | 벼 재배용 화분장치 |
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WO1996001895A1 (fr) * | 1994-07-09 | 1996-01-25 | Japan Tobacco Inc. | Adn codant pour la phosphoenolpyvurate-carboxykinase, vecteur recombine le contenant et plantes transgeniques |
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JPH0783714B2 (ja) | 1983-08-29 | 1995-09-13 | 味の素株式会社 | 発酵法によるl―アミノ酸の製造法 |
JPH0612990B2 (ja) | 1984-08-09 | 1994-02-23 | 株式会社アドバンス | 生細胞のco2固定能力を増大する方法 |
JPH0630587B2 (ja) | 1985-08-23 | 1994-04-27 | 住友化学工業株式会社 | クロ−ン化されたトウモロコシのppc遺伝子 |
JPH04222527A (ja) | 1990-12-19 | 1992-08-12 | Japan Tobacco Inc | トマトの形質転換方法 |
JP3002735B2 (ja) | 1991-09-27 | 2000-01-24 | 農林水産省食品総合研究所長 | 大豆のホスホエノールピルビン酸カルボキシラーゼ遺伝子 |
EP0604662B1 (en) | 1992-07-07 | 2008-06-18 | Japan Tobacco Inc. | Method of transforming monocotyledon |
JPH0690766A (ja) | 1992-09-09 | 1994-04-05 | Mitsui Giyousai Shokubutsu Bio Kenkyusho:Kk | アブラナのホスホエノールピルビン酸 カルボキシラーゼ遺伝子 |
CA2148499C (en) | 1993-09-03 | 2006-07-11 | Hideaki Saito | Method for transforming monocotyledons using scutella of immature embryos |
AU8003494A (en) | 1993-10-29 | 1995-05-22 | Japan Tobacco Inc. | Dna coding for carbonic anhydrase |
EP0690128A4 (en) | 1993-12-03 | 2004-03-03 | Japan Tobacco Inc | POLYPEPTIDE HAVING COLD RESISTANCE INDUCING PYRUVATE-PHOSPHATE-DIKINASE ACTIVITY, DNA ENCODING THE POLYPEPTIDE, AND RECOMBINANT VECTOR AND TRANSFORMED PLANT CONTAINING BOTH OF THE SAME |
JPH07184657A (ja) | 1993-12-28 | 1995-07-25 | Japan Turf Glass:Kk | イネにおけるc4光合成関連遺伝子およびそのプロモーター |
-
1998
- 1998-02-02 ID IDW980099D patent/ID21006A/id unknown
- 1998-02-10 WO PCT/JP1998/000537 patent/WO1998035030A1/ja active IP Right Grant
- 1998-02-10 AR ARP980100571A patent/AR011652A1/es not_active Application Discontinuation
- 1998-02-10 CA CA002250827A patent/CA2250827C/en not_active Expired - Fee Related
- 1998-02-10 DE DE69837588T patent/DE69837588T2/de not_active Expired - Lifetime
- 1998-02-10 AU AU57817/98A patent/AU729520B2/en not_active Ceased
- 1998-02-10 JP JP53414598A patent/JP3501814B2/ja not_active Expired - Fee Related
- 1998-02-10 US US09/155,989 patent/US6610913B1/en not_active Expired - Fee Related
- 1998-02-10 EP EP98901570A patent/EP0916725B1/en not_active Expired - Lifetime
- 1998-02-10 KR KR1019980708043A patent/KR100769755B1/ko not_active IP Right Cessation
- 1998-02-10 CN CN98800345A patent/CN1107723C/zh not_active Expired - Fee Related
- 1998-02-10 NZ NZ332271A patent/NZ332271A/xx unknown
- 1998-02-10 RU RU98120358/13A patent/RU2159813C2/ru not_active IP Right Cessation
- 1998-02-10 AT AT98901570T patent/ATE360064T1/de not_active IP Right Cessation
-
2003
- 2003-02-20 US US10/368,396 patent/US20030221219A1/en not_active Abandoned
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WO1996001895A1 (fr) * | 1994-07-09 | 1996-01-25 | Japan Tobacco Inc. | Adn codant pour la phosphoenolpyvurate-carboxykinase, vecteur recombine le contenant et plantes transgeniques |
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KOGAMI H., ET AL.: "MOLECULAR AND PHYSIOLOGICAL EVALUATION OF TRANSGENIC TOBACCO PLANTSEXPRESSING A MAIZE PHOSPHOENOLPYRUVATE CARBOXYLASE GENE UNDER THE CONTROL OF THE CAULIFLOWER MOSAIC VIRUS 35S PROMOTER.", TRANSGENIC RESEARCH, SPRINGER NETHERLANDS, NL, vol. 03., 1 January 1994 (1994-01-01), NL, pages 287 - 296., XP002916978, ISSN: 0962-8819, DOI: 10.1007/BF01973588 * |
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Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7208318B2 (en) | 2002-05-27 | 2007-04-24 | Bayer Cropscience Ag | Method for producing plants with suppressed photorespiration and improved CO2 fixation |
JP2012518995A (ja) * | 2009-02-27 | 2012-08-23 | アドヴァンスト・テクノロジーズ(ケンブリッジ)リミテッド | ホスホエノールピルビン酸カルボキシキナーゼおよび/またはピルビン酸正リン酸ジキナーゼをコードする構築物を含む形質転換植物 |
US9260720B2 (en) | 2009-02-27 | 2016-02-16 | British American Tobacco (Investments) Limited | Transgenic plants comprising constructs encoding phosphoenolpyruvate carboxykinase and/or pyruvate orthophosphate dikinase |
Also Published As
Publication number | Publication date |
---|---|
AR011652A1 (es) | 2000-08-30 |
DE69837588D1 (de) | 2007-05-31 |
US6610913B1 (en) | 2003-08-26 |
KR100769755B1 (ko) | 2008-01-22 |
ATE360064T1 (de) | 2007-05-15 |
RU2159813C2 (ru) | 2000-11-27 |
NZ332271A (en) | 2000-04-28 |
DE69837588T2 (de) | 2008-01-03 |
JP3501814B2 (ja) | 2004-03-02 |
CN1220698A (zh) | 1999-06-23 |
EP0916725B1 (en) | 2007-04-18 |
CA2250827C (en) | 2005-10-18 |
CA2250827A1 (en) | 1998-08-13 |
AU5781798A (en) | 1998-08-26 |
AU729520B2 (en) | 2001-02-01 |
CN1107723C (zh) | 2003-05-07 |
EP0916725A1 (en) | 1999-05-19 |
EP0916725A4 (en) | 2004-06-09 |
ID21006A (id) | 1999-04-08 |
US20030221219A1 (en) | 2003-11-27 |
KR20000064878A (ko) | 2000-11-06 |
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