《植物生理学报》 2018, 54(8): 1305-1315

MAPK级联途径激酶结构特点及其信号转导途径在园艺作物逆境中的作用

李悦鹏, 张晓兰, 于雷, 耿国明, 齐红岩^*

沈阳农业大学园艺学院, 设施园艺省部共建教育部重点实验室, 北方园艺设施设计与应用技术国家地方联合工程研究中心(辽宁), 沈阳110866

通信作者：齐红岩；E-mail: hyqiaaa@126.com

摘　要：

促分裂原活化蛋白激酶(mitogen-actived protein kinase, MAPK)是一类受胞外刺激、通过MAPK级联反应(MAPKKK-MAPKK-MAPK)而激活的丝氨酸/苏氨酸蛋白激酶。MAPK级联途径是真核生物中广泛存在且高度保守的信号转导途径, 通过蛋白质磷酸化作用将上游信号级联放大传递至下游应答分子。该途径在植物应对各种生物与非生物胁迫以及激素信号转导过程中起关键作用。本文着重介绍MAPK级联途径激酶结构特点及其信号转导途径在园艺作物逆境胁迫中的应答反应, 以期为该领域的相关研究提供参考。

关键词：MAPK级联途径; 信号转导; 生物胁迫; 非生物胁迫; 激素信号

收稿：2018-03-02   修定：2018-07-25

资助：国家现代农业产业技术体系建设专项(CARS-25)和沈阳市科技计划项目(17-143-3-00)。

Structural characteristics of mapk cascade kinase and the function of signal transduction pathway in adversity stress of horticultural crop

LI Yue-Peng, ZHANG Xiao-Lan, YU Lei, GENG Guo-Ming, QI Hong-Yan^*

College of Horticulture, Shenyang Agricultural University/Key Laboratory of Protected Horticulture, Ministry of Education/Northern National & Local Joint Engineering Research Center of Horticultural Facilities Design and Application Technology (Liaoning), Shenyang 110866, China

Corresponding author: QI Hong-Yan; E-mail: hyqiaaa@126.com

Abstract:

Mitogen-activated protein kinase (MAPK) is one kind of serine/threonine protein kinase, which activated by extracellular stimulation through the MAPK cascade (MAPKKK-MAPKK-MAPK). MAPK cascade pathway widely exist in eukaryotes organism and highly conserved. They participate in plant responses to various biological stress, abiotic stress and hormone signal conditions through the protein phosphorylation signal cascade amplifier to downstream response. This paper focuses on the structural characteristics of MAPK cascade kinase structure in plants and its response of signal transduction pathway under adversity stress in horticultural crop. The purpose is to provide some references for relevant researches in this field.

Key words: MAPK cascades; signal transduction; abiotic stresses; biotic stress; hormonal signal