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光信号与激素调控种子休眠和萌发研究进展

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  • 中国科学院植物研究所光生物学重点实验室, 北京 100093

收稿日期: 2019-02-26

  录用日期: 2019-07-09

  网络出版日期: 2019-07-09

基金资助

中国博士后科学基金(2018M641520)

Advances in Light and Hormones in Regulating Seed Dormancy and Germination

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  • Key Laboratory of Photobiology, Institute of Botany, Chinese Academy of Sciences, Beijing 100093, China

Received date: 2019-02-26

  Accepted date: 2019-07-09

  Online published: 2019-07-09

摘要

休眠是种子植物在长期进化过程中产生的适应性性状, 通过抑制种子在不适宜的环境中萌发进而保证植物能够在逆境中生存。此外, 休眠有助于种子的长距离运输和扩散, 因此休眠对种子延续和物种保存具有重要意义。种子由休眠向萌发的发育转变不仅关系到物种的繁衍, 而且对保证农业生产中作物的产量和品质也具有重要作用。种子的休眠和萌发受到内源激素和外源光信号的共同调控。其中, 外源光信号主要通过调控内源ABA和GA的生物合成及信号转导进而调控种子休眠和萌发。该文系统综述了外源光信号和内源激素调控种子休眠和萌发的作用通路以及两类信号通路之间的交互作用, 旨在为农业生产中利用光和激素调控种子休眠与萌发提供参考。

本文引用格式

杨立文,刘双荣,林荣呈 . 光信号与激素调控种子休眠和萌发研究进展[J]. 植物学报, 2019 , 54(5) : 569 -581 . DOI: 10.11983/CBB19038

Abstract

Plants have evolved to maintain the dormancy of freshly harvested seeds, which ensures that seeds do not germinate until environmental conditions are optimal. Therefore, dormancy helps seeds spread over long distances to ensure the survival of species. The transition from dormancy to germination is crucial to plant survival and for promoting yield and quality in agricultural production. Seed dormancy and germination are precisely regulated by diverse endogenous hormones and light signals. Light cues regulate seed dormancy and germination by affecting abscisic acid/gibberellic acid biosynthesis and signals. In this review, we summarize the key roles of the hormone pathway and light signal transduction pathways in regulating seed dormancy and germination. We also discuss the interactions (crosstalk) between phytohormone signals and light signals in seed dormancy and germination, in order to apply reference for regulating seed dormancy and germination by using light and hormones in agricultural production.

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