A mutation in Arabidopsis BSK5 encoding a brassinosteroid-signaling kinase protein affects responses to salinity and abscisic acid
A mutation in Arabidopsis BSK5 encoding a brassinosteroid-signaling kinase protein affects responses to salinity and abscisic acid
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拟南芥 BSK5 编码油菜素类固醇信号激酶蛋白的突变影响对盐度和脱落酸的反应
DOI：
10.1016/j.bbrc.2012.08.118
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发表时间：
2012-10-05
影响因子：
3.1
通讯作者：
Ma, You-Zhi
中科院分区：
文献类型：
--
作者：
Li, Zhi-Yong;Xu, Zhao-Shi;Ma, You-Zhi
油菜素甾醇（BR）是近年来发现的一类植物激素，参与多种生理反应。虽然BR信号通路的许多关键组分已被分离和表征，但关于油菜素类固醇信号激酶（BSK）蛋白的详细表征的信息很少。本研究对拟南芥BSK 5基因进行了分离和功能分析。BSK5基因在不同的组织中均有表达，并受到盐、干旱等非生物胁迫以及BR和脱落酸（阿坝）等植物激素的诱导。拟南芥功能缺失突变体bsk5表现出对盐和阿坝的敏感性。BSK5基因的突变也改变了几个压力调节基因的表达。我们认为BSK5对其他信号以及BR有反应。皇冠版权所有（C）2012由Elsevier Inc.发布。All rights reserved.
As the most recently characterized group of plant hormones, brassinosteroids (BR) are involved in a number of physiological responses. Although many key components of the BR signaling pathway have been isolated and characterized, there is little information on detailed characterization of brassinosteroid-signaling kinase (BSK) proteins. In this study, Arabidopsis BSK5 was isolated and functionally analyzed. BSK5 transcripts were detected in various tissues, and were induced by abiotic stresses including salt and drought, as well as phytohormones of BR and abscisic acid (ABA). Arabidopsis loss-of-function mutant bsk5 exhibited sensitivity to salinity and ABA. Mutations of the BSK5 gene also altered the expression of several stress-regulated genes. We suggest that BSK5 responds to other signals as well as BR. Crown Copyright (C) 2012 Published by Elsevier Inc. All rights reserved.