As sessile organisms,plants possess a complex system to cope with environmental changes.Ca^(2+)functions as a vital second messenger in the stress signaling of plants,and the CBL-interacting protein kinases(CIPKs)serv...As sessile organisms,plants possess a complex system to cope with environmental changes.Ca^(2+)functions as a vital second messenger in the stress signaling of plants,and the CBL-interacting protein kinases(CIPKs)serve as essential elements in the plant Ca^(2+)signaling pathway.In this study,calcineurin B-like protein-interacting protein kinase 26(BdCIPK26)from Brachypodium distachyon was characterized.Overexpression of BdCIPK26 enhanced tolerance to drought and salt stress of transgenic plants.Further investigations revealed that BdCIPK26 participated in abscisic acid(ABA)signaling,conferred hypersensitivity to exogenous ABA in transgenic plants,and promoted endogenous ABA biosynthesis.Moreover,BdCIPK26 was found to maintain ROS homeostasis in plants under stress conditions.Therefore,this study indicates that BdCIPK26 functions as a positive regulator in drought and salt stress response.展开更多
CIPK(CBL-interacting protein kinase)是近年来鉴定出的植物中特有的一类Ca2+传感器,与其互作的蛋白一起在植物特定的生长发育和应答胁迫过程中起重要作用。本研究从玉米中克隆到1个1338bp的ZmCIPK21基因,荧光定量PCR分析表明ZmCIPK21...CIPK(CBL-interacting protein kinase)是近年来鉴定出的植物中特有的一类Ca2+传感器,与其互作的蛋白一起在植物特定的生长发育和应答胁迫过程中起重要作用。本研究从玉米中克隆到1个1338bp的ZmCIPK21基因,荧光定量PCR分析表明ZmCIPK21与盐、ABA、高温等逆境胁迫相关;生物信息学分析表明ZmCIPK21基因组含有14个外显子和13个内含子,蛋白结构上具有CIPK所共有的N端激酶结构域和C端NAF保守结构域。与拟南芥CIPK家族进化分析结果显示ZmCIPK21与AtCIPK21具有较高同源性。展开更多
Ca2+是植物在不同发育阶段和响应多种复杂环境刺激的核心调控因子。CBL蛋白(Calcineurin B-likeproteins)和CIPK蛋白激酶(CBL-interacting protein kinases)通过相互作用解码特异的钙信号从而实现相应的生理功能。文章主要从CBL-CIPK信...Ca2+是植物在不同发育阶段和响应多种复杂环境刺激的核心调控因子。CBL蛋白(Calcineurin B-likeproteins)和CIPK蛋白激酶(CBL-interacting protein kinases)通过相互作用解码特异的钙信号从而实现相应的生理功能。文章主要从CBL-CIPK信号系统关键组分及相互作用,解码钙信号的机制,生理功能和调节机制等方面综述相关研究进展,并对未来的研究方向进行展望。展开更多
Ca2+作为植物中普遍存在的第二信使,其信号传感器CBL(calcineurin B-like protein)及与CBL互作的蛋白CIPK(CBL-interacting protein kinase)所构成的CBL-CIPK信号转导途径在转导特异Ca2+信号过程中起重要的作用。由于植物同时受多种复...Ca2+作为植物中普遍存在的第二信使,其信号传感器CBL(calcineurin B-like protein)及与CBL互作的蛋白CIPK(CBL-interacting protein kinase)所构成的CBL-CIPK信号转导途径在转导特异Ca2+信号过程中起重要的作用。由于植物同时受多种复杂环境因素影响,因此必须同时对各种复杂因素作出响应并转导并存的信号。CBL和CIPK在结构、表达以及功能上的特异性构成了CBL-CIPK途径能够转导特异Ca2+信号的分子基础。本文在介绍CBL、CIPK的基础上,着重对其组合成的CBL-CIPK途径转导特异Ca2+信号的分子机制进行综述。展开更多
基金funded by the Natural Science Foundation of Hubei Province,China(2019CFB388)the Guiding Project of Scientific Research Plan of the Hubei Provincial Department of Education(B2022007).
文摘As sessile organisms,plants possess a complex system to cope with environmental changes.Ca^(2+)functions as a vital second messenger in the stress signaling of plants,and the CBL-interacting protein kinases(CIPKs)serve as essential elements in the plant Ca^(2+)signaling pathway.In this study,calcineurin B-like protein-interacting protein kinase 26(BdCIPK26)from Brachypodium distachyon was characterized.Overexpression of BdCIPK26 enhanced tolerance to drought and salt stress of transgenic plants.Further investigations revealed that BdCIPK26 participated in abscisic acid(ABA)signaling,conferred hypersensitivity to exogenous ABA in transgenic plants,and promoted endogenous ABA biosynthesis.Moreover,BdCIPK26 was found to maintain ROS homeostasis in plants under stress conditions.Therefore,this study indicates that BdCIPK26 functions as a positive regulator in drought and salt stress response.
文摘大多数信号转导过程都伴随着细胞内钙离子浓度变化,CBL/CIPK信号系统是近几年在高等植物中发现的一类依赖于钙离子的信号系统,包括感知钙离子浓度变化的CBL蛋白(calcineurin B-like proteins)和与之互作的CIPK蛋白(CBL-interacting protein kinase)。研究表明CBL/CIPK信号系统在植物对逆境应答过程中起重要作用。在介绍CBL和CIPK的结构和特征基础上对不同植物CBL/CIPK信号系统在逆境应答中的研究现状况进行了综述,以期为基因工程改良作物抗逆育种提供新的思路和种质资源。
文摘CIPK(CBL-interacting protein kinase)是近年来鉴定出的植物中特有的一类Ca2+传感器,与其互作的蛋白一起在植物特定的生长发育和应答胁迫过程中起重要作用。本研究从玉米中克隆到1个1338bp的ZmCIPK21基因,荧光定量PCR分析表明ZmCIPK21与盐、ABA、高温等逆境胁迫相关;生物信息学分析表明ZmCIPK21基因组含有14个外显子和13个内含子,蛋白结构上具有CIPK所共有的N端激酶结构域和C端NAF保守结构域。与拟南芥CIPK家族进化分析结果显示ZmCIPK21与AtCIPK21具有较高同源性。
文摘Ca2+是植物在不同发育阶段和响应多种复杂环境刺激的核心调控因子。CBL蛋白(Calcineurin B-likeproteins)和CIPK蛋白激酶(CBL-interacting protein kinases)通过相互作用解码特异的钙信号从而实现相应的生理功能。文章主要从CBL-CIPK信号系统关键组分及相互作用,解码钙信号的机制,生理功能和调节机制等方面综述相关研究进展,并对未来的研究方向进行展望。
文摘Ca2+作为植物中普遍存在的第二信使,其信号传感器CBL(calcineurin B-like protein)及与CBL互作的蛋白CIPK(CBL-interacting protein kinase)所构成的CBL-CIPK信号转导途径在转导特异Ca2+信号过程中起重要的作用。由于植物同时受多种复杂环境因素影响,因此必须同时对各种复杂因素作出响应并转导并存的信号。CBL和CIPK在结构、表达以及功能上的特异性构成了CBL-CIPK途径能够转导特异Ca2+信号的分子基础。本文在介绍CBL、CIPK的基础上,着重对其组合成的CBL-CIPK途径转导特异Ca2+信号的分子机制进行综述。