期刊
SCIENCE
卷 354, 期 6314, 页码 886-889出版社
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aaf6005
关键词
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资金
- Winston Churchill Foundation of the United States
- Gatsby Foundation [GAT3272/GLC, GAT3273/GLB]
- Biotechnology and Biological Sciences Research Council [BB/I013350/1, BB/N010248/1]
- European Research Council grant EC FP7 ERC [243140]
- Deutsche Forschungsgemeinschaft [SCHA 303/16-1]
- Biotechnology and Biological Sciences Research Council [BB/I013350/1, BBS/E/J/00000610, BB/N010248/1, BB/K017152/1] Funding Source: researchfish
- BBSRC [BB/I013350/1, BB/N010248/1, BB/K017152/1] Funding Source: UKRI
- European Research Council (ERC) [243140] Funding Source: European Research Council (ERC)
Plants are responsive to temperature, and some species can distinguish differences of 1 degrees C. In Arabidopsis, warmer temperature accelerates flowering and increases elongation growth (thermomorphogenesis). However, themechanisms of temperature perception are largely unknown. We describe amajor thermosensory role for the phytochromes (red light receptors) during the night. Phytochrome null plants display a constitutive warm-temperature response, and consistent with this, we show in this background that the warm-temperature transcriptome becomes derepressed at low temperatures. We found that phytochrome B (phyB) directly associateswith the promoters of key target genes in a temperature-dependent manner. The rate of phyB inactivation is proportional to temperature in the dark, enabling phytochromes to function as thermal timers that integrate temperature information over the course of the night.
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