What is going on with the hormonal control of flowering in plants?
What is going on with the hormonal control of flowering in plants?
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DOI：
10.1111/tpj.15036
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发表时间：
2020-12-02
期刊：
影响因子：
7.2
通讯作者：
Izawa, Takeshi
中科院分区：
文献类型：
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作者：
Izawa, Takeshi
以拟南芥为模型系统的分子遗传学研究已经揭示了许多重要的分子机制，这些机制是控制植物成花等各种生物学事件的基础。开花的主要遗传途径已被深入研究，包括光周期、春化、自主和赤霉素途径。近年来，新的开花途径越来越多地被确定。这些包括年龄，温度，糖，压力和激素信号来控制花的过渡。其中，激素控制开花除了赤霉素途径本身并不被正式认为是一个主要的开花途径，由于相对较弱，往往多效性的遗传效应，复杂的表型变异，包括一些有争议的。然而，最近的一些研究表明，各种压力信号可能是通过激素调节开花。鉴于植物界的分子多样性，本文从光周期开花的评价开始，而不是在A。水稻是全世界人类消费的主要作物，是短日照植物、谷物和育种作物的模式系统。并将水稻开花途径与A. thaliana.本文旨在更新我们关于开花激素控制的知识，并将其整合到整个开花基因网络中。
Molecular genetic studies using Arabidopsis thaliana as a model system have overwhelmingly revealed many important molecular mechanisms underlying the control of various biological events, including floral induction in plants. The major genetic pathways of flowering have been characterized in-depth, and include the photoperiod, vernalization, autonomous and gibberellin pathways. In recent years, novel flowering pathways are increasingly being identified. These include age, thermosensory, sugar, stress and hormonal signals to control floral transition. Among them, hormonal control of flowering except the gibberellin pathway is not formally considered a major flowering pathway per se, due to relatively weak and often pleiotropic genetic effects, complex phenotypic variations, including some controversial ones. However, a number of recent studies have suggested that various stress signals may be mediated by hormonal regulation of flowering. In view of molecular diversity in plant kingdoms, this review begins with an assessment of photoperiodic flowering, not in A. thaliana, but in rice (Oryza sativa); rice is a staple crop for human consumption worldwide, and is a model system of short-day plants, cereals and breeding crops. The rice flowering pathway is then compared with that of A. thaliana. This review then aims to update our knowledge on hormonal control of flowering, and integrate it into the entire flowering gene network.