Plants having increased tolerance to heat stress

Details Plants having increased tolerance to heat stress Plants having increased tolerance to heat stress

C - Chemistry, Metallurgy

12

N

C12N 15/82 (2006.01) A01H 1/04 (2006.01) A01H 5/00 (2006.01) A01H 5/10 (2006.01) C12N 15/09 (2006.01) C12N 15/29 (2006.01) C07K 14/415 (2006.01)

Patent

CA 2684417

The invention relates to methods of producing a desired phenotype in a plant by manipulation of gene expression within the plant. The method relates to means which increase the level of expression of a MYB -subgroup 14 polynucleotide or a MYB68 polypeptide. The method also relates to expression of a nucleic acid sequence encoding a MYB -subgroup 14 or a MYB68 transcriptional factor. The methods are directed to elevating the levels of a MYB- subgroupl4 or a MYB68 expression, wherein a desired phenotype such as reduced flower abortion and increased yield during heat stress is observed. The invention also relates to nucleic acid sequences useful in such methods.

L'invention concerne des procédés de production d'un phénotype souhaité chez une plante par manipulation de l'expression génétique à l'intérieur de la plante. Le procédé concerne des moyens qui augmentent le niveau d'expression d'un polynucléotide MYB de sous-groupe 14 ou un polypeptide MYB68. Le procédé concerne également l'expression d'une séquence d'acides nucléiques codant pour un facteur transcriptionnel MYB de sous-groupe 14 ou un facteur transcriptionnel MYB68. Les procédés sont destinés à permettre l'élévation des niveaux d'expression de MYB de sous-groupe 14 ou de MYB68, un phénotype souhaité tel qu'un avortement des fleurs réduit et un rendement accru au cours d'un stress thermique étant observé. L'invention concerne également des séquences d'acides nucléiques utiles dans lesdits procédés.

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