《生命科学》 2010, 22(11): 1177-1183

黄瓜性型分化的分子机制

梁永宏，李广林*，郭　韬，魏　强

陕西师范大学生命科学学院，西安 710062

摘　要：摘　要：黄瓜(Cucumis sativus)是雌雄异花植物性型分化研究的重要模式植物，近年来虽然其性型分化的分子机制研究取得了一定的成果，但其性型分化的调控机制尚未完全阐明。该文综合花器官发育基因、性别决定基因、内源激素、环境因子、性型分化假说，在分子水平构建了黄瓜性型分化的表达调控网络。同时对激素和性别决定基因协控的黄瓜单性花器官凋亡机制进行了阐述，并就miRNA在黄瓜性型分化调控中的作用进行了探讨。
关键词：黄瓜；性型分化；內源激素；性型分化假说；miRNA

The molecular mechanism of sexual differentiation in cucumber(Cucumis sativus L.)

LIANG Yong-hong， LI Guang-lin*，GUO tao， WEI Qiang

College of Life Sciences， Shaanxi Normal University， Xi抋n710062， China

Abstract: Abstract:  Cucumber is a model in the study of unisexual flower development. Recently， although the study of sexual differentiation in cucumber had made some progress， the regulation mechanism of its sexual differentiation has not yet been fully clarified. The expressional regulation network of sexual differentiation in cucumber was set up completely at the molecular level by combinating the floral organ developmental genes， sex determination gene， endogenous hormones， environmental factors and sexual differentiation hypothesis in the paper. At the same time， the apoptosis mechanism of unisexual flower organ， which was about the interaction between hormones and sex determination gene was illustrated in the process of cucumber sexual differentiation， also the function of miRNA in the regulation of cucumber抯 sexual differentiation has been disscussed.
Key words: cucumber; sexual differentiation; endogenous hormones; sexual differentiation hypothesis; miRNA