摘要
玉米(Zea mays)属典型的雌雄异花植物,单性花的形成经历了复杂的性别决定过程。通过雄穗小花和雌穗下位花的雌蕊原基以及雌穗小花雄蕊原基的选择性败育(或退化),玉米最终形成正常的雌雄同株单性花。相关突变体的研究揭示,玉米性别决定涉及选择性细胞死亡、细胞保护及信号转导等复杂的过程。其中,植物激素信号的调控在玉米性别决定过程中处于核心地位。最近的研究表明,赤霉素、细胞分裂素和茉莉酸类物质参与调控玉米性别决定过程。该文结合最新研究成果,综述了植物激素在玉米性别决定中的作用及其调控途径,同时提出了研究中存在的问题,并对该领域未来的研究方向进行了展望。
Maize is a typical monoecious plant, and the formation of a unisexual flower undergoes a complex process of sex determination. Monoecious and spatially separated unisexual flowers are produced by selective abortion of pistil pdmordia in both tassel floral and lower ear floral parts and arrest of all stamen primordia in tassel spikelets. Previous study of related mutants revealed that sex determination is a complex process involving selective cell death, cell protection and signal transduction. Phytohormones and their signal transduction play an important role. Recent studies indicated that gibberellins, cytokinin and jasmonic acid are involved in the regulation of sex determination in maize. In this paper, we summarize the latest advances in the roles and regulatory pathways of plant hormones in maize sex determination. We describe problems in research and future directions in the field.
出处
《植物学报》
CAS
CSCD
北大核心
2012年第1期65-73,共9页
Chinese Bulletin of Botany
基金
河南省科技厅自然科学基金(No.092300410074)
河南省高校科技创新人才支持计划(No.2010HASTIT015)
关键词
玉米
植物激素
选择性败育
性别决定
maize, phytohormone, selective abortion, sex determination
