Ministry of Agriculture Key Laboratory of Molecular Biology of Crop Pathogens and Insects, Institute of Biotechnology, Zhejiang University, Hangzhou 310058, China.
J Exp Bot. 2024 Jul 23;75(14):4180-4194. doi: 10.1093/jxb/erae105.
The timing of the developmental transition from the vegetative to the reproductive stage is critical for angiosperms, and is fine-tuned by the integration of endogenous factors and external environmental cues to ensure successful reproduction. Plants have evolved sophisticated mechanisms to response to diverse environmental or stress signals, and these can be mediated by hormones to coordinate flowering time. Phytohormones such as gibberellin, auxin, cytokinin, jasmonate, abscisic acid, ethylene, and brassinosteroids and the cross-talk among them are critical for the precise regulation of flowering time. Recent studies of the model flowering plant Arabidopsis have revealed that diverse transcription factors and epigenetic regulators play key roles in relation to the phytohormones that regulate floral transition. This review aims to summarize our current knowledge of the genetic and epigenetic mechanisms that underlie the phytohormonal control of floral transition in Arabidopsis, offering insights into how these processes are regulated and their implications for plant biology.
植物从营养生长向生殖生长的发育转变的时间对开花植物至关重要，它通过整合内源性因素和外部环境线索来精细调节，以确保成功繁殖。植物已经进化出复杂的机制来响应各种环境或胁迫信号，这些信号可以通过激素来协调开花时间。植物激素，如赤霉素、生长素、细胞分裂素、茉莉酸、脱落酸、乙烯和油菜素内酯，以及它们之间的相互作用，对于精确调控开花时间至关重要。最近对模式开花植物拟南芥的研究表明，多种转录因子和表观遗传调控因子在调节花发育的植物激素方面发挥着关键作用。本综述旨在总结我们目前对拟南芥中植物激素调控花发育的遗传和表观遗传机制的认识，深入了解这些过程是如何被调控的，以及它们对植物生物学的意义。
