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低温是非传统植胶区巴西橡胶树(Hevea brasiliensis)种植的重要限制因子。低温能够引起巴西橡胶树细胞结构、原生质胶体特性、水分状况、细胞渗透压、光合作用、呼吸作用、物质代谢和保护酶系统等发生一系列改变,最终影响植株的生长发育。目前已从巴西橡胶树中克隆出一些抗寒相关基因,但是巴西橡胶树响应低温胁迫的调控机制仍不十分清楚。本文综述了巴西橡胶树对低温逆境响应的生理特征及其应答调控机制,以期为深入研究巴西橡胶树抗寒机制提供参考。
Low temperature is an important limiting factor for the cultivation of Hevea brasiliensis in non-traditional gum-growing areas. Hypothermia can cause a series of changes in cell structure, protoplast characteristics, water status, cell osmotic pressure, photosynthesis, respiration, substance metabolism and protective enzyme system, which ultimately affect the growth and development of plants. At present, some cold-resistant genes have been cloned from the rubber tree of Brazil, but the regulatory mechanism of the rubber tree in response to low-temperature stress is still not very clear. In this paper, the physiological characteristics of response to the low-temperature adversity of Acacia pumila and its regulation mechanism were reviewed in order to provide a reference for further study on the mechanism of the resistance of Acacia Brasiliensis to cold stress.