Disease resistant plants
AssigneeEnza Zaden Beheer B.V.
InventorsAugustinus Franciscus Johannes Maria Van Den Ackerveken, Mireille Maria Augusta Van Damme
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Abstract
The present invention relates to a plant, which is resistant to a pathogen of viral, bacterial, fungal or oomycete origin, wherein the plant has an increased homoserine level as compared to a plant that is not resistant to the said pathogen, in particular organisms of the phylum Oomycota. The invention further relates to a method for obtaining a plant, which is resistant to a pathogen of viral, bacterial, fungal or oomycete origin, comprising increasing the endogenous homoserine level in the plant.
Claims6
An isolated plant which is resistant to a pathogen, wherein the plant has an increased endogenous L-homoserine level as compared to a plant that is not resistant to said pathogen, wherein said plant is selected from the group consisting of cucumber, grape, and tomato, and
- wherein when said plant is cucumber, said pathogen is Pseudoperonospora cubensis and said cucumber plant has a mutation in the homoserine kinase gene of SEQ ID NO:
- 105 lowering the homoserine kinase activity of SEQ ID NO:
- 106;
- wherein when said plant is grape, said pathogen is Plasmopara viticola and said grape plant has a mutation in the homoserine kinase gene of SEQ ID NO:
- 103 lowering the homoserine kinase activity of SEQ ID NO:
- 104;
- and
- wherein when said plant is tomato, said pathogen is Phytophthora infestans and said tomato plant has a mutation in the homoserine kinase gene of SEQ ID NO:
- 109 lowering the homoserine kinase activity of SEQ ID NO:
- 110.
A method for obtaining a plant which is resistant to a pathogen, wherein the plant has an increased endogenous L-homoserine level as compared to a plant that is not resistant to said pathogen, wherein said plant is selected from the group consisting of cucumber, grape, and tomato, the method comprising:
- increasing the endogenous L-homoserine level in a cucumber plant by a mutation in the homoserine kinase gene of SEQ ID NO:
- 105 lowering the homoserine kinase activity of SEQ ID NO:
- 106 or reducing the expression of SEQ ID NO:
- 105 to produce a cucumber plant which is resistant to Pseudoperonospora cubensis;
- or
- increasing the endogenous L-homoserine level in a grape plant by a mutation in the homoserine kinase gene of SEQ ID NO:
- 103 lowering the homoserine kinase activity of SEQ ID NO:
- 104 or reducing the expression of SEQ ID NO:
- 103 to produce a grape plant which is resistant to Plasmopara viticola;
- or
- increasing the endogenous L-homoserine level in a tomato plant by a mutation in the homoserine kinase gene of SEQ ID NO:
- 109 lowering the homoserine kinase activity of SEQ ID NO:
- 110 or reducing the expression of SEQ ID NO:
- 109 to produce a tomato plant which is resistant to Phytophthora infestans.
Dependencies are inferred from the claim text.