Cochaperonin CPN20 negatively regulates abscisic acid signaling in Arabidopsis.
Cochaperonin CPN20 negatively regulates abscisic acid signaling in Arabidopsis.
复制标题
辅伴侣蛋白 CPN20 负向调节拟南芥中的脱落酸信号传导。
DOI:
10.1007/s11103-013-0082-8
复制
发表时间:
2013-10
影响因子:
5.1
通讯作者:
Zhang, Da-Peng
中科院分区:
文献类型:
--
作者:
Zhang, Xiao-Feng;Jiang, Tao;Wu, Zhen;Du, Shu-Yuan;Yu, Yong-Tao;Jiang, Shang-Chuan;Lu, Kai;Feng, Xiu-Jing;Wang, Xiao-Fang;Zhang, Da-Peng
关键词:
Previous study showed that the magnesium-protoporphyrin IX chelatase H subunit (CHLH/ABAR) positively regulates abscisic acid (ABA) signaling. Here, we investigated the functions of a CHLH/ABAR interaction protein, the chloroplast co-chaperonin 20 (CPN20) in ABA signaling in Arabidopsis thaliana. We showed that down-expression of the CPN20 gene increases, but overexpression of the CPN20 gene reduces, ABA sensitivity in the major ABA responses including ABA-induced seed germination inhibition, postgermination growth arrest, promotion of stomatal closure and inhibition of stomatal opening. Genetic evidence supports that CPN20 functions downstream or at the same node of CHLH/ABAR, but upstream of the WRKY40 transcription factor. The other CPN20 interaction partners CPN10 and CPN60 are not involved in ABA signaling. Our findings show that CPN20 functions negatively in the ABAR-WRKY40 coupled ABA signaling independently of its co-chaperonin role, and provide a new insight into the role of co-chaperones in the regulation of plant responses to environmental cues. The online version of this article (doi:10.1007/s11103-013-0082-8) contains supplementary material, which is available to authorized users.
登录
查看更多内容
影响因子:
11.4
作者:
Legnaioli, Tommaso;Cuevas, Juan;Mas, Paloma
通讯作者:
Mas, Paloma
影响因子:
16
作者:
Kitagawa, K;Skowyra, D;Hieter, P
通讯作者:
Hieter, P
影响因子:
7.4
作者:
Clement, Mathilde;Leonhardt, Nathalie;Noel, Laurent D.
通讯作者:
Noel, Laurent D.
DOI:
10.1016/s0167-4838(98)00268-4
发表时间:
1999-01-11
期刊:
BIOCHIMICA ET BIOPHYSICA ACTA-PROTEIN STRUCTURE AND MOLECULAR ENZYMOLOGY
影响因子:
--
作者:
Hirohashi, T;Nishio, K;Nakai, M
通讯作者:
Nakai, M
影响因子:
5.1
作者:
Du, Shu-Yuan;Zhang, Xiao-Feng;Lu, Zekuan;Xin, Qi;Wu, Zhen;Jiang, Tao;Lu, Yan;Wang, Xiao-Fang;Zhang, Da-Peng
通讯作者:
Zhang, Da-Peng