Molecular Biology and Biotechnology, CSIR-National Botanical Research Institute, Lucknow 226001, India.
Biotechnology Division, CSIR-Institute of Himalayan Bioresource Technology, Palampur 176061, HP, India.
Ann Bot. 2023 Dec 5;132(6):1103-1106. doi: 10.1093/aob/mcad112.
The thermotolerant ability of heat shock factors (HSFs) and heat shock proteins (HSPs) in plants has been shown. Recently, focus has been on their function in plant growth and development under non-stress conditions. Their role in flowering has been suggested given that lower levels of HSF/HSPs resulted in altered flowering in Arabidopsis. Genetic and molecular studies of Arabidopsis HSF/HSP mutants advocated an association with temperature-mediated regulation of flowering, but the fundamental genetic mechanism behind this phenomenon remains obscure. Here we outline plausible integration between HSFs/HSPs and temperature-dependent pathways in plants regulating flowering. Moreover, we discuss how similar pathways can be present in thermoperiodic geophytic plants that require ambient high temperatures for flowering induction.
已证实植物中的热休克因子（HSF）和热休克蛋白（HSP）具有耐热能力。最近，人们关注的焦点是它们在非胁迫条件下对植物生长和发育的功能。由于拟南芥中 HSF/HSPs 水平降低导致开花改变，因此有人提出它们在开花中的作用。对拟南芥 HSF/HSP 突变体的遗传和分子研究表明，它们与温度介导的开花调控有关，但这一现象背后的基本遗传机制尚不清楚。在这里，我们概述了 HSFs/HSPs 与植物中调节开花的温度依赖性途径之间可能的整合。此外，我们还讨论了在需要环境高温诱导开花的周期性长日照植物中，是否存在类似的途径。
