Plants having increased tolerance to heat stress
OwnerJiangxin Wan, Yafan Huang +1inventors
InventorsJiangxin Wan, Yafan Huang, Monika M. Kuzma
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Abstract
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-subgroup14 polynucleotide or a MYB68 polypeptide. The method also relates to expression of a nucleic acid sequence encoding a MYB-subgroup14 or a MYB68 transcriptional factor. The methods are directed to elevating the levels of a MYB-subgroup14 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.
Claims6
A method of producing a heat stress tolerant plant comprising:
- a) providing a nucleic acid construct that increases the expression of a MYBsubgroup-14 polypeptide;
- b) inserting said nucleic construct into a vector;
- c) transforming a plant, tissue culture, or a plant cell with the vector to obtain a plant, tissue culture or a plant cell with increased expression of said MYB subgroup-14 polypeptide;
- d) growing said plant or regenerating a plant from said tissue culture or plant cell, wherein a heat stress tolerant plant is produced.
A heat stress tolerant transgenic plant produced by the method claim of 1.
A method of identifying a heat stress tolerant plant, wherein the plant has reduced flower abortion and increased yield as compared to a control plant comprising
- a. exposing a population of flowering plants to a heat stress treatment;
- and
- b. selecting a plant from said population of plants having reduced flower abortion thereby identifying a heat stress tolerant plant.
Dependencies are inferred from the claim text.