WO2000078981A1 - Procede permettant d'augmenter la resistance de plantes de culture aux champignons phytopathogenes et aux bacteries par des methodes de genetique moleculaire - Google Patents

Procede permettant d'augmenter la resistance de plantes de culture aux champignons phytopathogenes et aux bacteries par des methodes de genetique moleculaire Download PDF

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Publication number
WO2000078981A1
WO2000078981A1 PCT/EP2000/005259 EP0005259W WO0078981A1 WO 2000078981 A1 WO2000078981 A1 WO 2000078981A1 EP 0005259 W EP0005259 W EP 0005259W WO 0078981 A1 WO0078981 A1 WO 0078981A1
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Prior art keywords
resistance
plant
hydroxylase
activity
enzyme
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PCT/EP2000/005259
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German (de)
English (en)
Inventor
Wilhelm Rademacher
John-Bryan Speakman
Eberhard Ammermann
Thorsten Jabs
Karin Herbers
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Basf Aktiengesellschaft
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Priority to PL00346058A priority Critical patent/PL346058A1/xx
Priority to IL14124900A priority patent/IL141249A0/xx
Priority to HU0103259A priority patent/HUP0103259A3/hu
Priority to EP00945715A priority patent/EP1102856A1/fr
Priority to BR0006873-0A priority patent/BR0006873A/pt
Priority to KR1020017001979A priority patent/KR20010113630A/ko
Priority to AU59705/00A priority patent/AU5970500A/en
Priority to JP2001505721A priority patent/JP2003505016A/ja
Priority to CA002340329A priority patent/CA2340329A1/fr
Publication of WO2000078981A1 publication Critical patent/WO2000078981A1/fr

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01H—NEW PLANTS OR NON-TRANSGENIC PROCESSES FOR OBTAINING THEM; PLANT REPRODUCTION BY TISSUE CULTURE TECHNIQUES
    • A01H1/00—Processes for modifying genotypes ; Plants characterised by associated natural traits
    • 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
    • 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
    • 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
    • C12N15/825—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 pigment biosynthesis
    • 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
    • C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
    • C12N15/8279—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance
    • C12N15/8281—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance for bacterial resistance
    • 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
    • C12N15/8271—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance
    • C12N15/8279—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance
    • C12N15/8282—Phenotypically and genetically modified plants via recombinant DNA technology with agronomic (input) traits, e.g. crop yield for stress resistance, e.g. heavy metal resistance for biotic stress resistance, pathogen resistance, disease resistance for fungal resistance

Definitions

  • the present invention relates to a method for increasing the resistance of crop plants to bacterial and fungal pathogens, characterized in that a plant is produced using molecular genetic methods in which the activity of the enzyme flavanone-3-hydroxylase is reduced.
  • the method is further characterized in that the enzyme flavanone-3-hydroxylase by molecular biological methods (eg anti-sense construct, co-suppression, the expression of specific antibodies or the expression of specific inhibitors) in whole or in part, continuously or temporarily, in the entire plant or in parts of the plant is inhibited in its activity.
  • molecular biological methods eg anti-sense construct, co-suppression, the expression of specific antibodies or the expression of specific inhibitors
  • the present invention furthermore relates to plants with increased resistance to bacterial and fungal pathogens, characterized in that the activity of the enzyme flavanone-3-hydroxylase is reduced by molecular genetic methods.
  • the productivity of crops can be reduced in many ways by stress factors. These include: viral diseases, bacterial and fungal pathogens, damaging insects, nematodes, snails, bite, heat, cool, cold, lack of water, too high water content in the soil, salinity, too high radiation intensity, too high ozone content, competition for light , Water and nutrients due to accompanying flora, improper or inapplicable herbicide applications (especially in fruit crops), treatments with herbicides, insecticides, fungicides, bioregulators or foliar fertilizers with insufficient selectivity, foliar applications of plant protection products or fertilizers during intensive sun exposure.
  • the object of the invention was to find a simple and inexpensive method for permanently improving the resistance 15 to bacterial and fungal pathogens, in particular in crop plants.
  • Cimectacarb 25 tere designation: Cimectacarb are used as bioregulators to inhibit plant growth. Their bioregulatory effect arises from the fact that they block the biosynthesis of gibberellins that promote length growth. They inhibit due to their structural relationship
  • Luteoliflavan does not normally occur in apple tissue and eriodyctiol occurs as an intermediate of the flavonoid substance echse only in small amounts.
  • the expected flavonoids catechin and cyanidin were not detectable in the treated tissue or occurred only in significantly reduced amounts (p Ro melt et al, lecture 8 th International Workshop on Fire Blight, Kusadasi, Turkey, 12th-15th October over 1998).
  • prohexadione-Ca, trinexapac-ethyl and other acylcyclohexadiones inhibit 2-oxoglutaric acid-dependent hydroxylases, which are important in the metabolism of phenolic substances. These are primarily chalcone synthetase (CHS) and flavanone-3-hydroxylase (F3H) (W. Heller and G. Forkmann, Biosynthesis, in: The Flavonoids, Harborne, JB (ed.), Chapman and Hall, New York, 1988). However, it cannot be excluded that acylcyclohexadiones also inhibit other, previously unknown, 2-oxoglutaric acid-dependent hydroxylases.
  • CHS chalcone synthetase
  • F3H flavanone-3-hydroxylase
  • the flavonoids eriodictyol, proanthocyanidins which are substituted on the C atom 3 with hydrogen, e.g. Luteforol, luteoliflavan, apigeniflavan and tricetiflavan, as well as homogeneous and heterogeneous oligomers and polymers are increasingly formed from the above-mentioned and structurally related substances.
  • flavanon-3-hydroxylase F3H
  • the concentration of the glycosides of the flavonoids, the phenolic compounds, the chalcones and the stilbene is also increased by reducing the enzyme activity of the enzyme flavanon-3-hydroxy-lase.
  • the process according to the invention for increasing the resistance to attack by bacterial and fungal pathogens by reducing the flavonone-3-hydroxylase enzyme activity can be successfully carried out on the following crop plants: wheat, barley, rye, oats, rice, corn, millet, sugar cane, Banana, tomato, tobacco, bell pepper, potato, rapeseed, sugar beet, soya, cotton, fruit trees from the rosacea family, such as apple and pear, plum, plum, peach, nectarine and cherry, and grapevines.
  • the method according to the invention is particularly suitable for increasing the resistance to Venturia inaequalis in apple and pear and to Botrytis cinerea in grapevines.
  • Plants whose flavanone 3-hydroxylase was reduced with the help of molecular genetic methods also showed an increased resistance to attack by Erwinia amylovora and other phytopathogenic bacteria.
  • the most important phytopathogenic bacteria can be found in the publication "European Handbook of Plant Diseases", Eds. Smith, I.M., Dunez, J., Lelliott, R.A. Phillips, D.H. and Archer, S.A. Blackwell Scientific Publications, 1988.
  • the method according to the invention is particularly suitable for increasing the resistance to the following phytopathogenic fungi:
  • Rhizoctonia species on cotton, rice and lawn Ustilago species on cereals and sugar cane, Venturia species (scab) on apples and pears Helminthosporium species on cereals, Septoria species on wheat
  • Botrytis cinerea (gray mold) on strawberries, vegetables, ornamental plants and vines, Cercospora arachidicola on peanuts, Pseudocercosporella herpotrichoides on wheat and barley, Pyricularia oryzae on rice,
  • Ripe tomato fruits from Lycopersicon esculentum Mill.cv. Moneymakers were washed, dried and, using a sterile blade, the pericarp of seeds, middle columnella and wooden parts freed.
  • the pericarp (approx. 50 g) was frozen in liquid nitrogen.
  • the material was then crushed in a mixer.
  • the comminuted material was mixed with 100 ml homogenizing medium in a pre-cooled mortar.
  • the suspension was then transferred to centrifuge cups by pressing through sterile gauze cloths. Then 1/10 vol 10% SDS was added and mixed well. After 10 minutes on ice, 1 volume of phenol / chloroform was added, the centrifuge cup closed and mixed well.
  • the supernatant was transferred to a new reaction vessel. This was followed by three further phenol / chloroform extractions and one chloroform extraction. In the following, 1 vol 3 M NaAC and 2.5 vol ethanol were added. The nucleic acids were precipitated overnight at -20 ° C. The next morning, the nucleic acids were pelleted for 15 minutes at 10,000 rpm in a refrigerated centrifuge (4 ° C). The supernatant was discarded and the pellet resuspended in 5 ml of cold 3 M NaAc. This washing step was repeated twice. The pellet was washed with 80% ethanol. The completely dried pellet was taken up in about 0.5 ml of sterile DEPC water and the RNA concentration was determined photometrically.
  • 5'-TCI (A / C) G (A / G) TGG CC (A / C / G) GA (C / T) AA (A / G) CC-3.
  • the sequence of the oligonucleotide derived using the peptide sequence DHQAW (amino acid 276281 in the sequence FL3H PETHY from Petunia hybridaj was as follows: 5'-CTT CAC ACA (C / G / T) GC (C / T) TG (A / G) G (A / G) TC-3.5. 5
  • the PCR reaction was carried out using the Perkin-Elmer tTth polymerase according to the manufacturer's instructions. 1/8 of the cDNA was used as template (corresponds to 0.3 ⁇ g RNA). The PCR program was: 10
  • the fragment was cloned into Promega's vector pGEM-T according to the manufacturer's instructions.
  • the correctness of the fragment was checked by sequencing.
  • the PCR fragment was isolated using the restriction sites Ncol and Pstl present in the polylinker of the vector pGEM-T and the protruding ends were blunt-ended using the T4 polymerase. This fragment
  • Fragment A (529 bp) contains the 35S promoter of the CaMV (nucleotides 6909 to 7437 of the cauliflower mosaic virus).
  • Fragment B the fragment of the F3H gene in antisense orientation.
  • Fragment C (192 bp) contains the termination signal of the octopine syn
  • the 5'RACE method (System for Rapid amplification of cDNA ends) was used to clone a larger fragment of the F3H.
  • a cytosine homopolymer was added to the 3 'end of the purified single-stranded F3H cDNA using the terminal deoxynucleotydil transferase according to the manufacturer's instructions.
  • the 5 'extended F3H cDNA was amplified using a second gene-specific primer (GSP-2) which binds in the region 3' before the GSP-1 recognition sequence and thus enables a "nested" PCR Manufacturer supplied "5'RACE abrided anchor primer” used, which is complementary to the homopolymeric dC tail of the cDNA.
  • GSP-2 second gene-specific primer
  • the cDNA fragment amplified in this way and designated as FSH extended was cloned into the vector pGEM-T from Promega according to the manufacturer's instructions.
  • the identity of the cDNA was confirmed by sequencing.
  • Fragment A (529 bp) contains the 35S promoter of the CaMV (nucleotides 6909 to 7437 of the cauliflower mosaic virus).
  • Fragment B the fragment of the F3H gene in the antisense orientation.
  • Fragment C (192 bp) contains the termination signal of the octopine synthase gene.
  • Tomato seeds (Lycopersicon esculentum Mill. Cv. Moneymaker) were incubated for 10 minutes in 4% sodium hypochlorite solution, then washed 3-4 times with sterile distilled water and on MS medium with 3% sucrose, pH 6.1 Germination designed. After a germination period of 7-10 d, the cotyledons could be used for the transformation.
  • Cmm was cultured on yeast dextrose Ca agar (YDC) at 28 ° C for 2 days.
  • the bacteria were washed off with sterile water and their cell density was determined.
  • the cell density was adjusted to 10 6 cells / ml with sterile water.
  • the injections were carried out with injection needles (No. 20), which were filled with the bacterial suspension. They were done in the
  • Leaf axil of the top fully developed leaf of young plants, which had a total of 3-4 leaves.
  • the infection was evaluated by assessing the developing phenotype.

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Abstract

La présente invention concerne un procédé permettant d'augmenter la résistance de plantes de culture aux agents pathogènes bactériens et fongiques. Ce procédé ce caractérise en ce que dans une plante, produite au moyen de méthodes de génétique moléculaire, l'activité d'enzyme flavanone-3-hydroxylase est réduite.
PCT/EP2000/005259 1999-06-17 2000-06-07 Procede permettant d'augmenter la resistance de plantes de culture aux champignons phytopathogenes et aux bacteries par des methodes de genetique moleculaire WO2000078981A1 (fr)

Priority Applications (9)

Application Number Priority Date Filing Date Title
PL00346058A PL346058A1 (en) 1999-06-17 2000-06-07 Method of increasing the resistance of cultivated plants to phytopathogenic fungi and bacteria by methods of molecular genetics
IL14124900A IL141249A0 (en) 1999-06-17 2000-06-07 Method of increasing the resistance of cultivated plants to phytopathogenic fungi and bacteria by methods of molecular genetics
HU0103259A HUP0103259A3 (en) 1999-06-17 2000-06-07 Method of increasing the resistance of cultivated plants to phytopathogenic fungi and bacteria by methods of molecular genetics
EP00945715A EP1102856A1 (fr) 1999-06-17 2000-06-07 Procede permettant d'augmenter la resistance de plantes de culture aux champignons phytopathogenes et aux bacteries par des methodes de genetique moleculaire
BR0006873-0A BR0006873A (pt) 1999-06-17 2000-06-07 Processo para aumentar a resistência de plantas de cultura aos patógenos bacterianos e fúngicos, e, planta com uma resistência aumentada aos patógenos bacterianos e fúngicos
KR1020017001979A KR20010113630A (ko) 1999-06-17 2000-06-07 분자 유전학 방법에 의해 식물병원성 진균 및 박테리아에대한 경작물의 내성을 증가시키는 방법
AU59705/00A AU5970500A (en) 1999-06-17 2000-06-07 Method of increasing the resistance of cultivated plants to phytopathogenic fungi and bacteria by methods of molecular genetics
JP2001505721A JP2003505016A (ja) 1999-06-17 2000-06-07 分子遺伝学の手法を用いて植物病原性の菌類および細菌に対する栽培植物の抵抗性を増大させる方法
CA002340329A CA2340329A1 (fr) 1999-06-17 2000-06-07 Procede permettant d'augmenter la resistance de plantes de culture aux champignons phytopathogenes et aux bacteries par des methodes de genetique moleculaire

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19927575.0 1999-06-17
DE19927575A DE19927575A1 (de) 1999-06-17 1999-06-17 Verfahren zur Erhöhung der Widerstandskraft von Kulturpflanzen gegen phytopathogene Pilze und Bakterien mit Hilfe molekulargenetischer Methoden

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WO2000078981A1 true WO2000078981A1 (fr) 2000-12-28

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EP (1) EP1102856A1 (fr)
JP (1) JP2003505016A (fr)
KR (1) KR20010113630A (fr)
AR (1) AR024382A1 (fr)
AU (1) AU5970500A (fr)
BR (1) BR0006873A (fr)
CA (1) CA2340329A1 (fr)
DE (1) DE19927575A1 (fr)
HU (1) HUP0103259A3 (fr)
IL (1) IL141249A0 (fr)
PL (1) PL346058A1 (fr)
TR (1) TR200100561T1 (fr)
WO (1) WO2000078981A1 (fr)
ZA (1) ZA200101327B (fr)

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2008092659A1 (fr) * 2007-02-01 2008-08-07 Enza Zaden Beheer B.V. Plantes résistantes aux maladies
EP2455476A1 (fr) * 2007-02-01 2012-05-23 Enza Zaden Beheer B.V. Plantes résistantes aux maladies
US10501754B2 (en) 2007-02-01 2019-12-10 Enza Zaden Beheer B.V. Disease resistant potato plants
US10597675B2 (en) 2013-07-22 2020-03-24 Scienza Biotechnologies 5 B.V. Downy mildew resistance providing genes in sunflower
US10787673B2 (en) 2007-02-01 2020-09-29 Enza Zaden Beheer B.V. Disease resistant Brassica plants
US11299746B2 (en) 2014-06-18 2022-04-12 Enza Zaden Beheer B.V. Disease resistant pepper plants
US11685926B2 (en) 2007-02-01 2023-06-27 Enza Zaden Beheer B.V. Disease resistant onion plants

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WO1993018171A1 (fr) * 1992-03-09 1993-09-16 Pioneer Hi-Bred International, Inc. Maitrise de la fertilite male par l'utilisation de sequences de promoteurs a induction externe
WO1993018142A1 (fr) * 1992-03-09 1993-09-16 Washington State University Research Foundation Procede de regulation de la fertilite des plantes
WO1997021816A1 (fr) * 1995-12-13 1997-06-19 Zeneca Limited Modulation genetique du murissement des fruits
WO1999043825A1 (fr) * 1998-02-25 1999-09-02 E.I. Du Pont De Nemours And Company Flavanone-3-hydroxylase vegetale
WO2000050613A2 (fr) * 1999-02-22 2000-08-31 Yissum Research And Development Company Of The Hebrew University Of Jerusalem Plantes transgeniques et procede de transformation d'oeillets

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1993018171A1 (fr) * 1992-03-09 1993-09-16 Pioneer Hi-Bred International, Inc. Maitrise de la fertilite male par l'utilisation de sequences de promoteurs a induction externe
WO1993018142A1 (fr) * 1992-03-09 1993-09-16 Washington State University Research Foundation Procede de regulation de la fertilite des plantes
WO1997021816A1 (fr) * 1995-12-13 1997-06-19 Zeneca Limited Modulation genetique du murissement des fruits
WO1999043825A1 (fr) * 1998-02-25 1999-09-02 E.I. Du Pont De Nemours And Company Flavanone-3-hydroxylase vegetale
WO2000050613A2 (fr) * 1999-02-22 2000-08-31 Yissum Research And Development Company Of The Hebrew University Of Jerusalem Plantes transgeniques et procede de transformation d'oeillets

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AR024382A1 (es) 2002-10-02
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