Department of Life Sciences, Korea University, Seoul 02841, Korea.
Int J Mol Sci. 2018 Oct 16;19(10):3196. doi: 10.3390/ijms19103196.
In plants, environmental conditions such as temperature affect survival, growth, and fitness, particularly during key stages such as seedling growth and reproduction. To survive and thrive in changing conditions, plants have evolved adaptive responses that tightly regulate developmental processes such as hypocotyl elongation and flowering time in response to environmental temperature changes. Increases in temperature, coupled with increasing fluctuations in local climate and weather, severely affect our agricultural systems; therefore, understanding the mechanisms by which plants perceive and respond to temperature is critical for agricultural sustainability. In this review, we summarize recent findings on the molecular mechanisms of ambient temperature perception as well as possible temperature sensing components in plants. Based on recent publications, we highlight several temperature response mechanisms, including the deposition and eviction of histone variants, DNA methylation, alternative splicing, protein degradation, and protein localization. We discuss roles of each proposed temperature-sensing mechanism that affects plant development, with an emphasis on flowering time. Studies of plant ambient temperature responses are advancing rapidly, and this review provides insights for future research aimed at understanding the mechanisms of temperature perception and responses in plants.
在植物中，环境条件（如温度）会影响生存、生长和适应能力，尤其是在幼苗生长和繁殖等关键阶段。为了在不断变化的条件下生存和繁衍，植物已经进化出适应性反应，这些反应可以紧密调节发育过程，例如对环境温度变化的下胚轴伸长和开花时间的调节。温度升高，加上当地气候和天气的波动增加，严重影响了我们的农业系统；因此，了解植物感知和响应温度的机制对于农业可持续性至关重要。在这篇综述中，我们总结了关于环境温度感知的分子机制以及植物中可能的温度感应成分的最新发现。基于最近的出版物，我们强调了几种温度响应机制，包括组蛋白变体的沉积和逐出、DNA 甲基化、选择性剪接、蛋白质降解和蛋白质定位。我们讨论了每个拟议的温度感应机制在影响植物发育方面的作用，重点是开花时间。对植物环境温度反应的研究正在迅速推进，本综述为未来旨在理解植物温度感知和响应机制的研究提供了见解。
