Yang Xiaolong, Guan Hongling, Yang Yinghua, Zhang Yiting, Su Wei, Song Shiwei, Liu Houcheng, Chen Riyuan, Hao Yanwei
College of Horticulture, South China Agricultural University, Guangzhou, China.
Front Plant Sci. 2023 Oct 4;14:1276649. doi: 10.3389/fpls.2023.1276649. eCollection 2023.
The escalating impact of global warming on crop yield and quality poses a significant threat to future food supplies. Breeding heat-resistant crop varieties holds promise, but necessitates a deeper understanding of the molecular mechanisms underlying plant heat tolerance. Recent studies have shed light on the initial events of heat perception in plants. In this review, we provide a comprehensive summary of the recent progress made in unraveling the mechanisms of heat perception and response in plants. Calcium ion (Ca), hydrogen peroxide (HO), and nitric oxide (NO) have emerged as key participants in heat perception. Furthermore, we discuss the potential roles of the NAC transcription factor NTL3, thermo-tolerance 3.1 (TT3.1), and Target of temperature 3 (TOT3) as thermosensors associated with the plasma membrane. Additionally, we explore the involvement of cytoplasmic HISTONE DEACETYLASE 9 (HDA9), mRNA encoding the phytochrome-interacting factor 7 (PIF7), and chloroplasts in mediating heat perception. This review also highlights the role of intranuclear transcriptional condensates formed by phytochrome B (phyB), EARLY FLOWERING 3 (ELF3), and guanylate-binding protein (GBP)-like GTPase 3 (GBPL3) in heat perception. Finally, we raise the unresolved questions in the field of heat perception that require further investigation in the future.
全球变暖对作物产量和质量的影响不断升级，对未来的粮食供应构成了重大威胁。培育耐热作物品种具有前景，但需要更深入地了解植物耐热性的分子机制。最近的研究揭示了植物热感知的初始事件。在这篇综述中，我们全面总结了在揭示植物热感知和响应机制方面取得的最新进展。钙离子（Ca）、过氧化氢（HO）和一氧化氮（NO）已成为热感知的关键参与者。此外，我们讨论了NAC转录因子NTL3、耐热性3.1（TT3.1）和温度靶点3（TOT3）作为与质膜相关的热传感器的潜在作用。此外，我们还探讨了细胞质组蛋白去乙酰化酶9（HDA9）、编码光敏色素相互作用因子7（PIF7）的mRNA和叶绿体在介导热感知中的作用。这篇综述还强调了由光敏色素B（phyB）、早花3（ELF3）和鸟苷酸结合蛋白（GBP）样GTP酶3（GBPL3）形成的核内转录凝聚物在热感知中的作用。最后，我们提出了热感知领域中尚未解决的问题，这些问题需要在未来进一步研究。
