外源Ca2+及钙离子信号抑制剂对茶树抗寒性的影响

doi:10.13305/j.cnki.jts.2015.06.002

Abstract

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⁺

CLC Number:

HUANG Yuting, QIAN Wenjun, WANG Bo, CAO Hongli, WANG Lu, HAO Xinyuan, WANG Xinchao, YANG Yajun. Effects of Exogenous Calcium and Inhibitors of Calcium Signaling Transduction Pathway on Cold Resistance of Tea Plant[J]. Journal of Tea Science, 2015, 35(6): 520-526.

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

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