CONSTANS alters the circadian clock in Arabidopsis thaliana

作     者：Pedro de los Reyes Gloria Serrano-Bueno Francisco J.Romero-Campero He Gao Jose M.Romero Federico Valverde 

作者机构：Plant Development Group-Institute for Plant Biochemistry and PhotosynthesisConsejo Superior de Investigaciones CientificasUniversidad de SevillaSevilleSpain Department of Computer Science and Artificial IntelligenceUniversidad de SevillaSevilleSpain Department of Plant Developmental BiologyMax Planck Institute for Plant Breeding ResearchCologneGermany Department of Plant Biochemistry and Molecular BiologyUniversidad de SevillaSevilleSpain 

出 版 物：《Molecular Plant》 (分子植物（英文版）)

年 卷 期：2024年第17卷第8期

页      面：1204-1220页

核心收录：

学科分类：0710[理学-生物学] 071001[理学-植物学] 07[理学] 

基　　金：a European Union contract LONGFLOW MSCAIF-2018-838317 and CSIC LONGFLOW CONV_EXT_014.The financial support of the Spanish Ministry for Science and Innovations(MICINN/FEDER)PID2020-117018RB-I00 to F.V.is also acknowledged.We thank Prof.George Coupland(MPiPZ Cologne Germany)for discussion and critical reading of the manuscript 

主　　题：CONSTANS circadian clock photoperiod 

摘      要：Plants are sessile organisms that have acquired highly plastic developmental strategies to adapt to the *** these processes,the floral transition is essential to ensure reproductive success and is finelyregulated by several internal andexternal genetic *** photoperiodic pathway,which controls plant response to day length,is one of the most important pathways controlling *** Arabidopsis photoperiodic flowering,CONSTANS(CO)is the central gene activating the expression of the florigen FLOWERING LOCUS T(FT)in the leaves at the end of a long *** circadian clock strongly regulates Co ***,to date,no evidence has been reported regarding a feedbackloop from the photoperiod pathway back to the circadian *** transcriptional networks,we have identified relevant network motifs regulating the interplay between the circadian clock and the photoperiod *** expression,chromatin immunoprecipitation experiments,and phenotypic analysis allowed us to elucidate the role of Co over the circadian *** with altered cO expression showed a different internal clock period,measured by daily leaf rhythmic *** showed that co upregulates the expression of key genes related to the circadian clock,such as CCA1,LHY,PRR5,and Gl,at the end of a long day by bindingto specific sites on their ***,a high numberof PRR5-repressed target genes are upregulated by CO,and this could explain the phase transition promoted by *** CO-PRR5 complex interacts with the bZiP transcriptionfactor HY5andhelps to localize the complex in the promoters of clock *** together,our results indicate that there may be a feedback loop in which co communicates back to the circadian clock,providing seasonal information to the circadian system.