SCaBP3/CBL7 negatively regulates the plasma membrane H+-ATPase and modulates hypocotyl elongation in Arabidopsis

被引：2

作者：

Liu, Xiao ^{[1
]}

Wu, Yujiao ^{[1
]}

Fu, Haiqi ^{[1
]}

Song, Shu ^{[1
]}

He, Qian ^{[1
]}

Yang, Yongqing ^{[1
]}

机构：

[1] China Agr Univ, Coll Biol Sci, Beijing Haidian 100193, Peoples R China

来源：

PLANT SIGNALING & BEHAVIOR | 2022年 / 17卷 / 01期

基金：

中国国家自然科学基金;

关键词：

Arabidopsis thaliana; PM H+-ATPase; calcium binding protein SCaBP3; hypocotyl elongation; PHOSPHORYLATION;

D O I：

10.1080/15592324.2022.2092699

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

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.

引用

页数：5

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