Article
The Arabidopsis RING finger E3 ligase RHA2b acts additively with RHA2a in regulating abscisic acid signaling and drought response.
Plant physiology - 1 Jun 2011
Li Hongmei, Jiang Hongling, Bu Qingyun, Zhao Qingzhen, Sun Jiaqiang, Xie Qi, Li Chuanyou
Abstract excerpt
We have previously shown that the Arabidopsis (Arabidopsis thaliana) RING-H2 E3 ligase RHA2a positively regulates abscisic acid (ABA) signaling during seed germination and postgerminative growth. Here, we report that RHA2b, the closest homolog of RHA2a, is also an active E3 ligase and plays an important role in ABA signaling. We show that RHA2b expression is induced by ABA and that overexpression of RHA2b leads...
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