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      Phytochromes function as thermosensors inArabidopsis

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          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.

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          ggplot2

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            Monte Carlo sampling methods using Markov chains and their applications

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              The Split-Apply-Combine Strategy for Data Analysis

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                Author and article information

                Journal
                Science
                Science
                American Association for the Advancement of Science (AAAS)
                0036-8075
                1095-9203
                November 17 2016
                November 18 2016
                November 18 2016
                October 27 2016
                : 354
                : 6314
                : 886-889
                Article
                10.1126/science.aaf6005
                27789797
                c94267ef-081c-4d2e-a5d6-ce6cb51e143f
                © 2016

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