IB-CAS  > 中科院植物分子生理学重点实验室
Pseudo Response Regulators Regulate Photoperiodic Hypocotyl Growth by RepressingPIF4/5Transcription(1)([OPEN])
Li, Na1; Zhang, Yuanyuan; He, Yuqing1; Wang, Yan1; Wang, Lei1
2020
Source PublicationPLANT PHYSIOLOGY
ISSN0032-0889
Volume183Issue:2Pages:686-699
AbstractThe circadian clock measures and conveys daylength information to control rhythmic hypocotyl growth in photoperiodic conditions to achieve optimal fitness, but it operates through largely unknown mechanisms. Here, we show that Pseudo Response Regulators (PRRs) coordinate with the Evening Complex (EC), a transcriptional repressor complex within the clock core oscillator, to specifically regulate photoperiodic hypocotyl growth in Arabidopsis (Arabidopsis thaliana). Intriguingly, a distinct daylength could shift the expression phase and extend the expression duration of PRRs. Multiple lines of evidence have further demonstrated that PRRs directly bind the promoters ofPHYTOCHROME-INTERACTING FACTOR4(PIF4) andPIF5to repress their expression, hence PRRs act as transcriptional repressors of the positive growth regulatorsPIF4andPIF5. Importantly, mutation or truncation of the TIMING OF CAB EXPRESSION1 (TOC1) DNA binding domain, without compromising its physical interaction with PIFs, still caused long hypocotyl growth under short days, highlighting the essential role of the PRR-PIFtranscriptional module in photoperiodic hypocotyl growth. Finally, genetic analyses have demonstrated thatPIF4andPIF5are epistatic toPRRsin the regulation of photoperiodic hypocotyl growth. Collectively, we propose that, upon perceiving daylength information, PRRs cooperate with EC to directly repressPIF4andPIF5transcription together with their posttranslational regulation of PIF activities, thus forming a complex regulatory network to mediate circadian clock-regulated photoperiodic growth. Pseudo Response Regulator proteins and the Evening Complex transmit daylength information to regulate photoperiodic hypocotyl growth by directly repressing transcription of key growth regulators.
Subject AreaPlant Sciences
DOI10.1104/pp.19.01599
Indexed BySCI
Language英语
WOS KeywordARABIDOPSIS CIRCADIAN CLOCK ; INDUCED LEAF SENESCENCE ; PLANT-GROWTH ; COINCIDENCE MECHANISM ; RED-LIGHT ; TOC1 ; PHOSPHORYLATION ; PROTEIN ; ELONGATION ; EXPRESSION
WOS Research AreaPlant Sciences
WOS IDWOS:000541865100035
PublisherAMER SOC PLANT BIOLOGISTS
SubtypeArticle
Publication PlaceROCKVILLE
EISSN1532-2548
Funding OrganizationStrategic Priority Research Program of the Chinese Academy of Sciences (CAS) [XDB27030206] ; National Natural Sciences Foundation of ChinaNational Natural Science Foundation of China (NSFC) [31670290, 31570292] ; Youth Innovation Promotion Association CAS [2017110]
Corresponding Author Emailwanglei@ibcas.ac.cn
OAhybrid, Green Published
Citation statistics
Cited Times:15[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.ibcas.ac.cn/handle/2S10CLM1/21711
Collection中科院植物分子生理学重点实验室
Affiliation1.Chinese Acad Sci, CAS Ctr Excellence Mol Plant Sci, Inst Bot, Key Lab Plant Mol Physiol, Beijing 100093, Peoples R China
2.Univ Chinese Acad Sci, Beijing 100049, Peoples R China
Recommended Citation
GB/T 7714
Li, Na,Zhang, Yuanyuan,He, Yuqing,et al. Pseudo Response Regulators Regulate Photoperiodic Hypocotyl Growth by RepressingPIF4/5Transcription(1)([OPEN])[J]. PLANT PHYSIOLOGY,2020,183(2):686-699.
APA Li, Na,Zhang, Yuanyuan,He, Yuqing,Wang, Yan,&Wang, Lei.(2020).Pseudo Response Regulators Regulate Photoperiodic Hypocotyl Growth by RepressingPIF4/5Transcription(1)([OPEN]).PLANT PHYSIOLOGY,183(2),686-699.
MLA Li, Na,et al."Pseudo Response Regulators Regulate Photoperiodic Hypocotyl Growth by RepressingPIF4/5Transcription(1)([OPEN])".PLANT PHYSIOLOGY 183.2(2020):686-699.
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