摘要
植物的糖既能参与细胞的碳和能量代谢,又能作为信号分子促进植株生长发育并参与调控植物对逆境胁迫的响应。目前诸多研究表明抗寒锻炼中可溶性糖的积累有助于保护植物抵御冻害,黄瓜等园艺作物的抗冷性在外源施糖后提高,但具体机制尚未明确。糖能够促进植株通过表观形态、生理生化及分子水平等方面对非生物逆境胁迫响应、调控植株的抗性。糖代谢过程与脱落酸(ABA)等植物激素的调控密切相关。WRKY作为ABA相关逆境应答信号通路中的核心转录因子,同是糖代谢调控机制中的重要因子,或许在响应冷胁迫的相关代谢机制中参与发挥着重要作用。综述了糖对园艺作物冷适应的响应及调控的分子机理,并分析讨论了WRKY家族对园艺植物糖调控冷适应效应响应的机理。
Sugar in plant can not only promote the cellular carbon metabolism and energy metabolism,also act as a signal molecule to promote plant growth and participate in the regulation of plant response to adversity stress.Currently,a number of studies reveal that the accumulation of soluble sugar is conducive to protecting plants from freezing injury in cold hardening,it has been shown that the cold resistance of horticultural crops such as cucumber has been improved under exogenous sugar application,however,the specific mechanisms are not clear yet.Sugar can promote plants’responses to abiotic stress through different regulatory mechanisms,such as physiology and biochemistry,and different molecular regulatory mechanisms.WRKY,as a core transcription factor in the ABA-related adversity response signaling pathway,is also an important factor in the sugar metabolism regulation mechanisms,and may play an important role in the related metabolic mechanisms in response to cold stress.Here the response and regulatory mechanisms of cold acclimation in horticultural crops by sugar are reviewed,and the role of WRKY family in the process is analyzed and discussed.
作者
潘英杰
张颖
武杞蔓
李正青
PAN Ying-jie;ZHANG Ying;WU Qi-man;LI Zheng-qing(College of Life Science,Shenyang Normal University,Shenyang 110034)
出处
《生物技术通报》
CAS
CSCD
北大核心
2022年第3期203-212,共10页
Biotechnology Bulletin
基金
辽宁省科学技术基金博士启动项目(20170520357)
辽宁省科学计划项目(2017208001)
辽宁省重点研发计划项目(2018103004)
沈阳市科技局中青年科技创新人才项目(RC170190)
沈阳师范大学优秀人才计划。
关键词
低温
转录因子
WRKY
外源糖
cold stress
transcription factor
WRKY
exogenous sugar
