Xiao Liu, Yujiao Wu, Haiqi Fu, Shu Song, Qian He, Yongqing Yang
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引用次数: 1
Abstract
The regulation of hypocotyl elongation is an important process in plant growth and development and depends on the activity of the plasma membrane (PM) H+-ATPase. In this study, we found that the Arabidopsis protein SOS3-LIKE CALCIUM BINDING PROTEIN3 (SCaBP3) negatively regulates PM H+-ATPase activity in yeast and hypocotyl elongation in dark-grown seedlings. Yeast two-hybrid assays showed that SCaBP3 interacts with representative members of the Arabidopsis PM H+-ATPase family. Experiments in RS-72 yeast showed that SCaBP3 negatively regulates PM H+-ATPase activity-dependent yeast cell growth. Hypocotyl elongation was promoted in the loss-of-function mutant scabp3 and inhibited in SCaBP3 overexpression lines of Arabidopsis. We propose that SCaBP3 modulates hypocotyl elongation by negatively regulating PM H+-ATPase activity.
期刊介绍：
Plant Signaling & Behavior, a multidisciplinary peer-reviewed journal published monthly online, publishes original research articles and reviews covering the latest aspects of signal perception and transduction, integrative plant physiology, and information acquisition and processing.
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