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Phytochromes function as thermosensors in Arabidopsis
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Jung, Jae-Hoon, Domijan, Mirela, Klose, Cornelia, Biswas, Surojit, Ezer, Daphne, Gao, Mingjun, Khattak, Asif Khan, Box, Mathew S., Charoensawan, Varodom, Cortijo, Sandra, Kumar, Manoj, Grant, Alastair, Locke, James C. W., Schäfer, Eberhard, Jaeger, Katja E. and Wigge, Philip A. (2016) Phytochromes function as thermosensors in Arabidopsis. Science, 354 (6314). pp. 886-889. doi:10.1126/science.aaf6005 ISSN 0036-8075.
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Official URL: http://dx.doi.org/10.1126/science.aaf6005
Abstract
Plants are responsive to temperature, and some species can distinguish differences of 1°C. In Arabidopsis, warmer temperature accelerates flowering and increases elongation growth (thermomorphogenesis). However, the mechanisms of temperature perception are largely unknown. We describe a major 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 associates with 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.
Item Type: | Journal Article | ||||||
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Divisions: | Faculty of Science, Engineering and Medicine > Science > Statistics | ||||||
Journal or Publication Title: | Science | ||||||
Publisher: | American Association for the Advancement of Science | ||||||
ISSN: | 0036-8075 | ||||||
Official Date: | 18 November 2016 | ||||||
Dates: |
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Volume: | 354 | ||||||
Number: | 6314 | ||||||
Page Range: | pp. 886-889 | ||||||
DOI: | 10.1126/science.aaf6005 | ||||||
Status: | Peer Reviewed | ||||||
Publication Status: | Published | ||||||
Access rights to Published version: | Restricted or Subscription Access |
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