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7 Jul 2014

News: First molecule that represses cellular growth by hormones, found in plants

A new research led by CRAG scientist and CSIC Assistant Professor Ana Caño-Delgado, has found a molecule which blocks the stem cell division mediated by plant steroid hormones (brassinosteroids) in Arabidopsis. The protein is a transcription factor called BRAVO (acronym of Brassinosteroids at Vascular and Organizing Centre).

According to scientists, BRAVO is found only in the stem cell niche of the root, where it represses the cell division triggered by hormones. It acts, scientists say, “as a safe-lock” which prevents uncontrolled cell proliferation. The study is published in Developmental Cell.