Article
Shoot-supplied ammonium targets the root auxin influx carrier AUX1 and inhibits lateral root emergence in Arabidopsis.
Plant, cell & environment - 1 Jun 2011
Li Baohai, Li Qing, Su Yanhua, Chen Hao, Xiong Liming, Mi Guohua, Kronzucker Herbert J, Shi Weiming
Abstract excerpt
Deposition of ammonium (NH₄+) from the atmosphere is a substantial environmental problem. While toxicity resulting from root exposure to NH₄+ is well studied, little is known about how shoot-supplied ammonium (SSA) affects root growth. In this study, we show that SSA significantly affects lateral root (LR) development. We show that SSA inhibits lateral root primordium (LRP) emergence, but not LRP initiation,...
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