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http://krishi.icar.gov.in/jspui/handle/123456789/70942
Title: | Nucleocytoplasmic trafficking of the Arabidopsis WD40 repeat protein XIW1 regulates ABI5 stability and abscisic acid responses |
Other Titles: | Not Available |
Authors: | Xuezhong Xu,Wang Wan, Guobin Jiang, Yue Xi, Haijian Huang, Jiajia Cai,Yanan Chang, Cheng-Guo Duan, Satendra K. Mangrauthia, Xinxiang Peng, Jian-Kang Zhu, Guohui Zhu |
ICAR Data Use Licennce: | http://krishi.icar.gov.in/PDF/ICAR_Data_Use_Licence.pdf |
Author's Affiliated institute: | ICAR-Indian Institute of Rice Research Hyderabad |
Published/ Complete Date: | 2019-12-01 |
Project Code: | Not Available |
Keywords: | WD40 protein ABA signaling nuclear export ABI5 stability XPO1 |
Publisher: | Cell Press |
Citation: | Xu X, Wan W, … Mangrauthia, S.K et al. (2019). Nucleocytoplasmic trafficking of the Arabidopsis WD40 repeat protein XIW1 regulates ABI5 stability and abscisic acid responses. Molecular Plant, (https://doi.org/10.1016/j.molp.2019.07.001). |
Series/Report no.: | Not Available; |
Abstract/Description: | WD40 repeat-containing proteins (WD40 proteins) serve as versatile scaffolds for protein–protein interactions, modulating a variety of cellular processes such as plant stress and hormone responses. Here we report the identification of a WD40 protein, XIW1 (for XPO1-interacting WD40 protein 1), which positively regulates the abscisic acid (ABA) response in Arabidopsis. XIW1 is located in the cytoplasm and nucleus. We found that it interacts with the nuclear transport receptor XPO1 and is exported by XPO1 from the nucleus. Mutation of XIW1 reduces the induction of ABA-responsive genes and the accumulation of ABA Insensitive 5 (ABI5), causing mutant plants with ABA-insensitive phenotypes during seed germination and seedling growth, and decreased drought stress resistance. ABA treatment upregulates the expression of XIW1, and both ABA and abiotic stresses promote XIW1 accumulation in the nucleus, where it interacts with ABI5. Loss of XIW1 function results in rapid proteasomal degradation of ABI5. Taken together, these findings suggest that XIW1 is a nucleocytoplasmic shuttling protein and plays a positive role in ABA responses by interacting with and maintaining the stability of ABI5 in the nucleus. |
Description: | Not Available |
ISSN: | Not Available |
Type(s) of content: | Research Paper |
Sponsors: | Not Available |
Language: | English |
Name of Journal: | Molecular Plant |
Volume No.: | 12 |
Page Number: | 1598-1611 |
Name of the Division/Regional Station: | Biotechnology |
Source, DOI or any other URL: | DOI:https://doi.org/10.1016/j.molp.2019.07.001 |
URI: | http://krishi.icar.gov.in/jspui/handle/123456789/70942 |
Appears in Collections: | CS-IIRR-Publication |
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