BIG BROTHER Uncouples Cell Proliferation from Elongation in the Arabidopsis Primary Root.

Abstract excerpt

Plant organ size is sensitive to environmental conditions, but is also limited by hardwired genetic constraints. In Arabidopsis, a few organ size regulators have been identified. Among them, the BIG BROTHER (BB) gene has a prominent role in the determination of flower organ and leaf size. BB loss-of-function mutations result in a prolonged proliferation phase during leaf(-like) organ formation, and consequently...

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