Light-harvesting chlorophyll a/b-binding proteins are required for stomatal response to abscisic acid in Arabidopsis

被引：240

作者：

Xu, Yan-Hong ^{[1
,2
]}

Liu, Rui ^{[1
,2
]}

Yan, Lu ^{[1
,2
]}

Liu, Zhi-Qiang ^{[1
,2
]}

Jiang, Shang-Chuan ^{[1
]}

Shen, Yuan-Yue ^{[1
,2
]}

Wang, Xiao-Fang ^{[1
]}

Zhang, Da-Peng ^{[1
]}

机构：

[1] Tsinghua Univ, Bioinformat & Syst Biol Lab, Minist Educ, Sch Life Sci, Beijing 100084, Peoples R China

[2] China Agr Univ, Coll Biol Sci, Beijing 100094, Peoples R China

来源：

JOURNAL OF EXPERIMENTAL BOTANY | 2012年 / 63卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Abscisic acid signalling; Arabidopsis thaliana; light-harvesting chlorophyll a; b binding protein; reactive oxygen species; stomatal movement; CHELATASE H-SUBUNIT; GENE-EXPRESSION; PHOSPHATASE; 2C; PHOTOSYSTEM-II; REGULATED EXPRESSION; SIGNAL-TRANSDUCTION; ABA; TRANSCRIPTION; COMPLEX; DROUGHT;

D O I：

10.1093/jxb/err315

中图分类号：

Q94 [植物学];

学科分类号：

071001 ;

摘要：

The light-harvesting chlorophyll a/b binding proteins (LHCB) are perhaps the most abundant membrane proteins in nature. It is reported here that the down-regulation or disruption of any member of the LHCB family, LHCB1, LHCB2, LHCB3, LHCB4, LHCB5, or LHCB6, reduces responsiveness of stomatal movement to ABA, and therefore results in a decrease in plant tolerance to drought stress in Arabidopsis thaliana. By contrast, over-expression of a LHCB member, LHCB6, enhances stomatal sensitivity to ABA. In addition, the reactive oxygen species (ROS) homeostasis and a set of ABA-responsive genes are altered in the lhcb mutants. These data demonstrate that LHCBs play a positive role in guard cell signalling in response to ABA and suggest that they may be involved in ABA signalling partly by modulating ROS homeostasis.

引用

页码：1095 / 1106

页数：12

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