Article
Lack of ACTPK1, an STY kinase, enhances ammonium uptake and use, and promotes growth of rice seedlings under sufficient external ammonium.
The Plant journal : for cell and molecular biology - 1 Mar 2018
Beier Marcel P, Obara Mitsuhiro, Taniai Akiko, Sawa Yuki, Ishizawa Jin, Yoshida Haruki, Tomita Narumi, Yamanaka Tsuyoshi, Ishizuka Yawara, Kudo Syuko, Yoshinari Akira, Takeuchi Shiho, Kojima Soichi, Yamaya Tomoyuki, Hayakawa Toshihiko
Abstract excerpt
Ammonium influx into plant roots via the high-affinity transport system (HATS) is down-modulated under elevated external ammonium, preventing ammonium toxicity. In ammonium-fed Arabidopsis, ammonium transporter 1 (AMT1) trimers responsible for HATS activity are allosterically inactivated in a dose-dependent manner via phosphorylation of the conserved threonine at the carboxyl-tail by the calcineurin B-like...
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