甲烷:一种新的植物气体信号分子?  

Methane:a new gaseous signalling molecule in plants?

作　　者：张毅华[1] 方玮[1] 崔为体[1] 孙学军[2] 沈文飚[1] ZHANG Yi-Hua FANG Wei CUI Wei-Ti SUN Xue-Jun SHEN Wen-Biao(College of Life Sciences, Nanjing Agricultural University, Nanjing 210095, China Faculty of Naval Medicine, Second Military Medicine University, Shanghai 200433, China)

机构地区：[1]南京农业大学生命科学学院,南京210095 [2]第二军医大学海军医学系,上海200433

出　　处：《植物生理学报》2017年第7期1192-1198,共7页Plant Physiology Journal

基　　金：国家自然科学基金(31572116);中国博士后科学基金(2015T80560);中央高校基本科研业务费专项资金(KYTZ201402)~~

摘　　要：甲烷(methane,CH_4)是大气中含量最丰富的还原性有机化合物。尽管很早以前人们就发现微生物、动物及植物能够产生并释放CH_4,但一直以来不清楚其产生的来源及生理功能。最近的研究表明,CH_4在动物中具有抗炎症、抗氧化和抗细胞凋亡等生理效应。植物中的研究提示,CH_4不仅能提高耐逆性,而且能促进根的形态建成,其中的分子机理还涉及到对靶基因的转录水平和翻译后水平的调控。本文阐述了微生物、动物和植物中内源CH_4的产生和释放、生物学效应以及分子机理,并提出CH_4可能是一种新的植物气体信号分子的假说。Methane （CH4） is the most abundant reducing organic compounds in the atmosphere. Although it is well known that fungi, animals and plants could produce and release CH4, its biological source（s） and physio-logical functions are not fully elucidated. Recent results showed that CH4 exhibited anti-inflammatory, anti-oxi- dative and anti-apoptotic actions in animals. Besides, some recent results in plants revealed that CH4 could not only improve tolerance to abiotic stress, but also induce root morphogenesis. Above mechanism was at least partially contributed to the regulation of target genes at transcriptional and post-translational levels. In this paper, we provide a brief summary of new insight into CH4 production and emission, biological roles and molecu- lar mechanism. In addition, we propose that CH4 may be a new gaseous signalling molecule in plants.

关 键 词：甲烷 信号分子 产生机理 生物学效应 

分 类 号：Q41[生物学—生理学]