생명과학과 신임교원 채용 후보 공개세미나

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  • 2017-01-06


생명과학과 신임교원 채용 후보 공개세미나
[Life Sciences Faculty Candidate Seminar Notice]
              ▶Subject: Beyond photoreceptor: role of phytochrome as a thermosensor
              ▶Speaker: Jae-Hoon Jung, Ph.D. (University of Cambridge)
              ▶Date: 4:00 PM/Dec. 13(Tue.)/2016
              ▶Place: Auditorium(1F), Postech Biotech Center
 Plant development is responsive to temperature, and the phenology and distribution of crops and wild plants have already altered in response to climate change. Despite the large-scale implications of warmer temperatures on plant populations, the mechanisms by which plants sense and integrate temperature information remain largely unknown. I have recently found that Arabidopsis red-light photoreceptors phytochromes control the plant temperature transcriptome at night, by acting thermoresponsive transcriptional repressors. Phytochrome null mutants display a constitutive warm temperature response, and in the background, the warm temperature transcriptome becomes de-repressed at low temperatures. It was also discovered phytochrome B (phyB) directly associates with the promoters of key target genes in a temperature dependent manner. The rate of PHYB inactivation (dark reversion rate) is proportional to temperature in the dark, enabling phytochromes to function as thermal timers, integrating temperature information over the course of the night. In this talk, I will summarize recent advances in phytochrome function as a thermosensor and then talk about how the studies contribute to developing new ideas on plant temperature perception. Finally, I will briefly introduce my research plan.