植物叶缘锯齿发育调控的研究进展

doi:10.11924/j.issn.1000-6850.casb2021-0477

摘要/Abstract

摘要：

叶片是植物重要的营养器官,叶片的形成模式和发育涉及激素信号和转录因子间复杂遗传网络的调控。叶缘锯齿的产生是植物对不同环境长期适应的结果,对植物应对高温、干旱等逆境胁迫及响应光周期都有十分重要的作用。为了更清晰地认识植物叶缘锯齿的发育过程,本研究对植物叶缘锯齿形成过程中重要的调控因子及其调控机制进行了分类和总结。叶缘锯齿的发育受生长素、细胞分裂素、赤霉素等植物激素,NAM/CUC、TCP、SPL等转录因子,KNOX基因家族及其他调节因子的调控,并在单叶和复叶植物中表现出明显不同的调控模式。植物叶缘锯齿发育仍有很多未知的调控因子,因此,未来一个重要的研究方向就是要继续挖掘和鉴定更多参与植物叶缘锯齿发育的调控因子,并进一步解析其作用的分子机制,从而为今后通过调控叶形为其他作物性状改良提供理论依据。

关键词: 叶缘锯齿, 生长素, NAM/CUC, TCP, KNOX

Abstract:

Plants leaf is an important vegetative organ whose formation and development involves hormonal signals and complicated genetic networks regulating among different transcription factors. The occurrence of leaf margin serration is a result of long-term plant adaption to diverse environment, which is of great significance for plants to respond to high temperature, drought and other stresses, and photoperiod. In order to better understand the developmental process of leaf margin serration in plants, this paper classified and summarized the important regulatory factors and their regulatory mechanisms in the formation of leaf edge serration in plants. Development of leaf margin serration is regulated by plants hormone, such as auxin, cytokinin, and gibberellin, and transcription factors, such as NAM/CUC, TCP and SPL, KNOX gene family, and other regulatory factors. In addition, development of leaf margin serration also exhibits different regulatory patterns among plants with single or compound leaves. There are still many unknown regulatory factors of the development process of leaf margin serration in plants, therefore, it is important to explore and identify more regulatory factors in the future, and understand their underlying mechanisms, thus providing a theoretical basis for crop trait improvement through modification of leaf shape.

Key words: leaf margin serration, auxin, NAM/CUC, TCP, KNOX

中图分类号:

袁静, 周冰莹. 植物叶缘锯齿发育调控的研究进展[J]. 中国农学通报, 2021, 37(26): 24-31.

Yuan Jing, Zhou Bingying. The Regulation of Leaf Margin Serration Development in Plants: A Review[J]. Chinese Agricultural Science Bulletin, 2021, 37(26): 24-31.

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