The evening complex coordinates environmental and endogenous signals in $Arabidopsis$ - CNRS - Centre national de la recherche scientifique Accéder directement au contenu
Article Dans Une Revue Nature Plants Année : 2017

The evening complex coordinates environmental and endogenous signals in $Arabidopsis$

Sandra Cortijo

Résumé

Plants maximize their fitness by adjusting their growth and development in response to signals such as light and temperature. The circadian clock provides a mechanism for plants to anticipate events such as sunrise and adjust their transcriptional programmes. However, the underlying mechanisms by which plants coordinate environmental signals with endogenous pathways are not fully understood. Using RNA-sequencing and chromatin immunoprecipitation sequencing experiments, we show that the evening complex (EC) of the circadian clock plays a major role in directly coordinating the expression of hundreds of key regulators of photosynthesis, the circadian clock, phytohormone signalling, growth and response to the environment. We find that the ability of the EC to bind targets genome-wide depends on temperature. In addition, co-occurrence of phytochrome B (phyB) at multiple sites where the EC is bound provides a mechanism for integrating environmental information. Hence, our results show that the EC plays a central role in coordinating endogenous and environmental signals in $Arabidopsis$.

Dates et versions

hal-01582096 , version 1 (05-09-2017)

Identifiants

Citer

Daphne Ezer, Jae-Hoon Jung, Hui Lan, Surojit Biswas, Laura Gregoire, et al.. The evening complex coordinates environmental and endogenous signals in $Arabidopsis$. Nature Plants, 2017, 3 (7), pp.17087. ⟨10.1038/nplants.2017.87⟩. ⟨hal-01582096⟩
382 Consultations
0 Téléchargements

Altmetric

Partager

Gmail Facebook X LinkedIn More