木本植物季节性休眠的分子机制  

Molecular Mechanism of Seasonal Dormancy in Woody Plants

作　　者：庄维兵[1] 高志红[1] 章镇[1] 侍婷[1] 倪照君[1] 王翡[1] 

机构地区：[1]南京农业大学园艺学院,南京210095

出　　处：《西北植物学报》2010年第9期1919-1928,共10页Acta Botanica Boreali-Occidentalia Sinica

基　　金：国家自然科学基金(30871681);江苏省科技基础设施建设计划(BM2008008)

摘　　要：季节性休眠是多年生木本植物在生态和进化上的一种"权衡"机制,也是植物界多样性生存策略的组成部分。木本植物的休眠反应首先是Ca2+作为信号物质诱导CO/FT基因的表达,进而引起与休眠相关的DAM基因的表达;而低温可以诱导休眠的发生,冷诱导表达的基因CBF和COR在休眠期间也有表达;而与逆境相关的蛋白如脱水蛋白、抗冻蛋白、热激蛋白和热稳定蛋白等也与休眠反应有密切的关系。本文就与木本植物季节性休眠相关的分子机制进行了综述。Seasonal dormancy,one of the measurable mechanisms for perennial plants in ecology and evolution,is a component of the multiple survival strategies of vegetable kingdom.The calcium is as the first signal substance induces expression of CO/FT gene in the dormancy reaction of woody plants,which then arouses gene expression of DORMANCY ASSOCIATED MADS-BOX（DAM）.Moreover,the dormancy is also induced by the low temperature and the cold-induced genes,such as CBF and COR expressed during the period of the dormancy.The stress-related proteins such as dehydration proteins,antifreeze proteins,heat shock proteins and heat-stable proteins and so on are also closely related to dormancy.This paper reviewed several molecular mechanisms of woody plants related to the seasonal dormancy.

关 键 词：木本植物 休眠 冷诱导基因 DAMS基因 CA2+ 分子机制 低温诱导蛋白 

分 类 号：Q945.35[生物学—植物学] Q789