植物甾醇在植物逆境胁迫中的研究进展

Progresses on Phytosterols in Plant Stress

植物甾醇是一类重要的生理活性物质,对植物的生长发育具有重要作用,对响应植物逆境胁迫也具有重要功能.植物甾醇是细胞膜和脂质筏的重要组分,与膜的稳定性密切相关,主要通过甾醇含量的相对变化维持膜的稳定性及影响脂质筏的生物功能响应逆境胁迫.植物甾醇作为信号分子参与逆境胁迫中的信号传导,油菜素内酯类(BRs)是植物甾醇合成途径的重要产物,作为一种重要的信号分子调控植物甾醇合成酶基因的表达以响应逆境胁迫.

Phytosterols is an important class of physiologically active substance, which has an important role in the plant growth and development. Phytosterols also plays an important role in response to plant stress. Phytosterols is an important component of cell membrane and lipid rafts, which is closely related to the sta- bility of the membrane, mainly by the relative change of the sterol content to maintain the stability of the membrane and affect the biological function of lipid rafts in response to stress. Phytosterols is involved in signaling transduction in plant stress as a signaling molecule, brassinosterols （BRs） is one of the important products of the phytosterols biosynthetic pathway and its function is in response to plant stress by regulating the phytosterols synthase genes expression.