Jae-Hoon Jung 1,6, Pil Joon Seo 2,6, Eunkyoo Oh 3,6, Jungmook Kim 4,5
1Department of Biological Sciences, Sungkyunkwan University, Suwon 16419, Korea
2Department of Chemistry, Seoul National University, Seoul 08826, Korea
3Department of Life Sciences, Korea University, Seoul 02841, Korea
4Department of Bioenergy Science and Technology, Chonnam National University, Gwangju 61186, Korea
5Department of Integrative Food, Bioscience, and Technology, Chonnam National University, Gwangju 61186, Korea
Correspondence: Jungmook Kim
Plants constantly face fluctuating ambient temperatures and must adapt to survive under stressful conditions. Temperature affects many aspects of plant growth and development through a complex network of transcriptional responses. Although temperature sensing is a crucial primary step in initiating transcriptional responses via Ca2+ and/or reactive oxygen species signaling, an understanding of how plants perceive temperature has remained elusive. However, recent studies have yielded breakthroughs in our understanding of temperature sensors and thermosensation mechanisms. We review recent findings on potential temperature sensors and emerging thermosensation mechanisms, including biomolecular condensate formation through phase separation in plants. We also compare the temperature perception mechanisms of plants with those of other organisms to provide insights into understanding temperature sensing by plants.