| 非生物逆境胁迫下植物钙信号转导的分子机制 |
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| 引用本文： | 张和臣,尹伟伦,夏新莉.非生物逆境胁迫下植物钙信号转导的分子机制[J].植物学报,2007,24(1):114-122. |
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| 作者姓名： | 张和臣 尹伟伦 夏新莉 |
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| 作者单位： | 北京林业大学生物科学与技术学院, 北京 100083 |
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| 基金项目： | 国家自然科学基金,国家科技支撑计划 |
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| 摘 要： | Ca2+作为植物细胞中最重要的第二信使, 参与植物对许多逆境信号的转导。在非生物逆境条件下, 植物细胞质内的钙离子在时间、空间及浓度上会出现特异性变化, 即诱发产生钙信号。钙信号再通过其下游的钙结合蛋白进行感受和转导, 进而在细胞内引起一系列的生物化学反应以适应或抵制各种逆境胁迫。目前在植物细胞中发现Ca2+/CDPK、Ca2+/CaM和Ca2+/CBL 3类钙信号系统, 研究表明它们与非生物逆境胁迫信号转导密切相关。本文通过从植物在非生物逆境条件下钙信号的感受、转导到产生适应性和抗性等方面, 介绍钙信号转导分子机制的一些研究进展。
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| 关 键 词： | 非生物胁迫 钙信号 分子机制 信号转导 |
| 收稿时间： | 2006-04-04 |
| 修稿时间： | 2006-08-04 |
The Mechanism of Ca2+ Signal Transduction under Abiotic Stresses in Plants |
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| Hechen Zhang,Weilun Yin,Xinli Xia.The Mechanism of Ca2+ Signal Transduction under Abiotic Stresses in Plants[J].Bulletin of Botany,2007,24(1):114-122. |
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| Authors: | Hechen Zhang Weilun Yin Xinli Xia |
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| Institution: | College of Biological Sciences and Bio-Technology, Beijing Forestry University, Beijing 100083, China |
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| Abstract: | Ca2+ acting as a second messenger plays a crucial role in stress signal transduction pathways. In plants, intracellular calcium levels altered in response to multiple abiotic stresses result in calcium signatures. The specific signatures of these calcium
transients are achieved via the function of calcium-binding proteins. So far, three families of calcium-binding proteins have been identified in plants, including calcium dependent protein kinases (CDPKs), calmodulin (CaM) and calcineurin B-like proteins (CBLs).The proteins likely recognize specific calcium signatures and relay these signals into downstream responses to accommodate
external stimuli. In this review, we summarize the molecular mechanisms of calcium signal transduction under abiotic stresses. |
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| Keywords: | , |
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