Methods for modifying plant responses to stress and...

Multicellular living organisms and unmodified parts thereof and – Method of introducing a polynucleotide molecule into or... – The polynucleotide confers resistance to heat or cold

Reexamination Certificate

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C435S006120, C435S468000, C435S419000, C435S320100, C435S183000, C530S370000, C536S023100, C536S023600, C800S278000, C800S290000, C800S295000

Reexamination Certificate

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07615681

ABSTRACT:
Plant stresses such as pest drought, and excessive temperatures can lead to significant losses of crops each year. There is a continuing need to develop novel plant varieties that are less susceptible to damage or loss by such stresses. The present invention provides a system and method for generating plants having an increased resistance to plant stresses such as drought or adverse temperatures. Transgenic plants expressing a phosphoinositide-specific phospholipase C (PI-PLC) gene can show an unexpected and dramatic improvement in their capacity to tolerate a variety of stress conditions. Moreover, increased PI-PLC expression can further lead to marked increase in plant growth rates, maturation, and lipid content. The present invention encompasses transgenic plants having modifications with regard to PI-PLC pathways, such as altered PI-PLC levels, and plant products thereof.

REFERENCES:
patent: 5474921 (1995-12-01), Koblan et al.
patent: 6720477 (2004-04-01), da Costa e Silva et al.
Shi et al. The Plant Journal, 1995, vol. 8, No. 3, pp. 381-390.
Das et al., GeneEmbl, Accession No. AF108123, Direct submission, Apr. 20, 1999, see Result 2.

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