The Samuel Roberts Noble Foundation

The Samuel Roberts Noble Foundations, Inc.

Michael K Udvardi

Richard A Dixon

Jerome A Verdier

Jiading Yang

Eric Worley

Jian Zhao

The invention provides methods and compositions for the modulation of proanthocynidin ('PA;' condensed tannin) production in plants. The methods of the invention allow creation of plants having novel phenotypes, such as alterations in levels of PA or in the types of tissues in which PAs are produced. Altered expression of PA in plants may be achieved, for instance without significantly affecting anthocyanin content or overall secondary metabolite profiles. Alternatively, expression of PA in plants may be achieved while also affecting anthocyanin content.

Methods and compositions for regulating production of proanthocyanidins

The invention provides coding and promoter sequences for a VS-1 and AP-2 gene, which affects the developmental process of senescence in plants. Vectors, transgenic plants, seeds, and host cells comprising heterologous VS-1 and AP-2 genes are also provided. Additionally provided are methods of altering nutrient allocation and composition in a plant using the VS-1 and AP-2 genes.

Regulating nutrient allocation in plants

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Ardmore, OK, United States of America

Michael K Udvardi