《植物生理学报》 2018, 54(1): 10-18

甲基乙二醛: 植物中一种新的信号分子

王月, 周志豪, 叶芯妤, 李忠光^*

云南师范大学生命科学学院, 生物能源持续开发利用教育部工程研究中心, 云南省生物质能与环境生物技术重点实验室, 昆明650500

通信作者：李忠光；E-mail: zhongguang_li@163.com

摘　要：

由于甲基乙二醛(methylglyoxal, MG)会破坏蛋白质、DNA、RNA和生物膜, 故长期以来被认为是一种细胞毒害剂。近年来的研究初步表明, 低浓度的MG是一种信号分子, 参与种子的萌发、植物的生长、发育、生殖及胁迫耐性的获得。本文结合最新的研究进展, 综述了植物体内MG的合成代谢和分解代谢、环境刺激引发的MG信号, 以及与MG有关的植物耐逆性(包括耐盐性、耐旱性、重金属胁迫耐性、耐热性和耐冷性)的形成, 并指出未来的研究方向。

关键词：甲基乙二醛; 乙二醛酶系统; 信号分子; 耐逆性

收稿：2017-11-12   修定：2017-12-20

资助：国家自然科学基金(31760069和31360057)。

Methylglyoxal: a new signaling molecule in plants

WANG Yue, ZHOU Zhi-Hao, YE Xin-Yu, LI Zhong-Guang^*

Key Laboratory of Biomass Energy and Environmental Biotechnology of Yunnan Province, Engineering Research Center of Sustainable Development and Utilization of Biomass Energy, Ministry of Education, School of Life Sciences, Yunnan Normal University, Kunming 650500, China

Corresponding author: LI Zhong-Guang; E-mail: zhongguang_li@163.com

Abstract:

Methylglyoxal (MG) is considered to be a cytotoxin because it can destroy proteins, DNA, RNA, and biomembrane. The recent study showed that MG at low concentration is a signal molecule, participating in seed germination and plant growth, development, reproduction, as well as the acquisition of stress tolerance. In this review, based on the current advance in MG field, MG anabolism and catabolism, environmental stress-induced MG signaling, and the acquisition of abiotic stress tolerance (including salt, drought, heavy metal, heat, and cold tolerance) related to MG in plants were summarized, and the research direction in MG field in the future was pointed out.

Key words: methylglyoxal; glyoxalase system; signaling molecule; stress tolerance