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茶叶科学 ›› 2015, Vol. 35 ›› Issue (6): 520-526.doi: 10.13305/j.cnki.jts.2015.06.002

• • 上一篇    下一篇

外源Ca2+及钙离子信号抑制剂对茶树抗寒性的影响

黄玉婷1, 钱文俊1,2, 王博1, 曹红利1, 王璐1, 郝心愿1, 王新超1,*, 杨亚军1,*   

  1. 1. 中国农业科学院茶叶研究所/国家茶树改良中心 农业部茶树生物学与资源利用重点实验室,浙江 杭州 310008;
    2. 西北农林科技大学园艺学院,陕西 杨凌 712100
  • 收稿日期:2015-04-14 修回日期:2015-05-29 出版日期:2015-12-15 发布日期:2019-08-26
  • 通讯作者: *
  • 作者简介:黄玉婷,女,硕士研究生,主要从事树育种与抗性机制研究。
  • 基金资助:
    国家自然科学基金(31170650)、国家茶叶产业技术体系(CARS-23)、浙江省农业新品种选育重大专项(2012C2905-3)

Effects of Exogenous Calcium and Inhibitors of Calcium Signaling Transduction Pathway on Cold Resistance of Tea Plant

HUANG Yuting1, QIAN Wenjun1,2, WANG Bo1, CAO Hongli1, WANG Lu1, HAO Xinyuan1, WANG Xinchao1,*, YANG Yajun1,*   

  1. 1. Tea Research Institute of the Chinese Academy of Agricultural Sciences, National Center for Tea Improvement, Key Laboratory of Tea Biology and Resources Utilization, Ministry of Agriculture, Hangzhou 310008, China;
    2. Horticultural College of Northwest A & F University, Yangling 712100, China;
  • Received:2015-04-14 Revised:2015-05-29 Online:2015-12-15 Published:2019-08-26

摘要: 钙离子信号通路在植物抗寒响应中起着重要作用。为了解钙离子信号通路与茶树抗寒性之间的关系,采用人工气候室模拟低温胁迫和外源施用钙调素(CaM)抑制剂W-7[N-(6-Aminohexyl)-5-chloro-1 -naphthalenesulfonamide]、钙信号通道抑制剂LaCl3及CaCl2溶液的方法,测定了低温胁迫下茶树叶片各种与抗寒相关的生理指标的变化情况。检测结果表明,钙离子信号抑制剂W-7、LaCl3处理均能提高茶树叶片相对电导率,提高茶树叶片中丙二醛(MDA)、超氧阴离子自由基(O2·-)、脯氨酸的含量,抑制超氧化物歧化酶(SOD)的活性;而CaCl2溶液处理茶树叶片相对电导率及叶片中MDA、超氧阴离子自由基和脯氨酸的含量降低,SOD活性提高。表明钙离子信号系统在茶树抗寒过程中发挥了重要作用。

关键词: 茶树, 抗寒, 钙离子信号通路抑制剂, Ca2+

Abstract: The calcium signal transduction pathway plays a pivotal role in the response to the stress of low temperatures. In order to verify the relationship between calcium signal transduction pathway and cold resistance of tea plant, the changes of some cold resistance related index were measured under artificial low temperature stress in climatron accompanied with using exogenous CaCl2, CaM inhibitor W-7 [N-(6-Aminohexyl)-5-chloro-1-naphthalene-sulfonamide] and calcium signal channel inhibitor LaCl3, respectively. Calcium signaling transduction pathway inhibitors W-7 and LaCl3 improved electrolyte leakage, enhanced contents of malondialdehyde (MDA), superoxide anion radical (O2·-) and proline, reduced the activities of superoxide dismutase (SOD) compared with control treatment, however, CaCl2 treatment showed opposite effects. It showed that calcium signaling system play an important role in the response to low temperature stress in tea plant.

Key words: tea plant (Camellia sinensis), cold resistance, inhibitors of calcium signaling transduction pathway, Ca2+

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