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Freie Universitat Berlin

Schmulling, Thomas

Werner, Tomas

Tomás Werner

Thomas Schmülling

Isabel Bartrina Y Manns

Helen Braun

The present invention relates to two new gain of function variants of the cytokinin receptor proteins AHK2 and AHK3, namely rock2 and rock3, to transgenic organisms comprising at least one of said new gain-of-function cytokinin receptor variants and to a method for the manufacturing of a transgenic plant comprising at least one of the new gain-of-function variants.

Rock2 and Rock3, two new gain-of-function variants of the cytokinin receptors AHK2 and AHK3

The present invention provides nucleotide sequences and corresponding amino acid sequences for plant cytokinin oxidase proteins. In addition, vectors, host cells, and transgenic plants comprising such sequences as well as methods for stimulating root growth and/or enhancing the formation of lateral or adventitious roots and/or altering root geotropism using such sequences are provided by the present invention. Also provided by the present invention are methods for altering various plant phenotypes including delaying onset to flowering, increasing leaf thickness, reducing vessel size, inducing parthenocarpy, increasing branching, increasing seed size and/or weight, embryo size and/or weight, and cotyledon size and/or weight using cytokinin oxidase proteins and/or nucleic acid molecules encoding cytokinin oxidase.

Method for modifying plant morphology, biochemistry and physiology

The present invention provides nucleotide sequences and corresponding amino acid sequences for plant cytokinin oxidase proteins. Also provided are vectors, host cells, and transgenic plants comprising such sequences as well as methods for stimulating root growth and/or enhancing the formation of lateral or adventitious roots and/or altering root geotropism using such sequences. Also provided by the present invention are methods for altering various plant phenotypes including increasing seed size and/or weight, embryo size and/or weight, and cotyledon size and/or weight using cytokinin oxidase proteins and/or nucleic acid molecules encoding cytokinin oxidase.

Growing community of inventors

Berlin, Germany

Tomás Werner