气候变化领域集成服务门户(CCPortal): RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime

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DOI	10.1038/s41467-021-22313-x
	RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime
	Qiu Y.; Pasoreck E.K.; Yoo C.Y.; He J.; Wang H.; Bajracharya A.; Li M.; Larsen H.D.; Cheung S.; Chen M.
发表日期	2021
ISSN	2041-1723
卷号	12 期号:1
英文摘要	Daytime warm temperature elicits thermomorphogenesis in Arabidopsis by stabilizing the central thermoregulator PHYTOCHROME INTERACTING transcription FACTOR 4 (PIF4), whose degradation is otherwise promoted by the photoreceptor and thermosensor phytochrome B. PIF4 stabilization in the light requires a transcriptional activator, HEMERA (HMR), and is abrogated when HMR’s transactivation activity is impaired in hmr-22. Here, we report the identification of a hmr-22 suppressor mutant, rcb-101, which surprisingly carries an A275V mutation in REGULATOR OF CHLOROPLAST BIOGENESIS (RCB). rcb-101/hmr-22 restores thermoresponsive PIF4 accumulation and reverts the defects of hmr-22 in chloroplast biogenesis and photomorphogenesis. Strikingly, similar to hmr, the null rcb-10 mutant impedes PIF4 accumulation and thereby loses the warm-temperature response. rcb-101 rescues hmr-22 in an allele-specific manner. Consistently, RCB interacts directly with HMR. Together, these results unveil RCB as a novel temperature signaling component that functions collaboratively with HMR to initiate thermomorphogenesis by selectively stabilizing PIF4 in the daytime. © 2021, The Author(s).
语种	英语
scopus关键词	Arabidopsis protein; basic helix loop helix transcription factor; hemera protein; phytochrome B; phytochrome interacting transcription factor 4; regulator of chloroplast biogenesis protein; transcription factor; unclassified drug; Arabidopsis protein; At4g28590 protein, Arabidopsis; basic helix loop helix transcription factor; chlorophyll; HMR protein, Arabidopsis; PIF4 protein, Arabidopsis; thioredoxin; transcription factor; allele; bioaccumulation; enzyme activity; herb; mutation; photodegradation; temperature effect; thermoregulation; allele; Arabidopsis; Article; bioaccumulation; biogenesis; chloroplast; controlled study; day length; degradation; light; morphogenesis; mutant; mutation; nonhuman; photomorphogenesis; photoreceptor; plant development; plant genetics; protein protein interaction; protein stability; signal transduction; thermogenesis; thermomorphogenesis; thermoreceptor; thermoregulation; transactivation; transcription initiation; warming; amino acid sequence; Arabidopsis; biological model; chemistry; genetics; metabolism; photoperiodicity; physiology; radiation response; seedling; suppressor gene; temperature; Arabidopsis; Amino Acid Sequence; Arabidopsis; Arabidopsis Proteins; Basic Helix-Loop-Helix Transcription Factors; Chlorophyll; Chloroplasts; Genes, Suppressor; Light; Models, Biological; Morphogenesis; Photoperiod; Protein Stability; Seedlings; Temperature; Thioredoxins; Transcription Factors
来源期刊	Nature Communications
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/251482
作者单位	Department of Botany and Plant Sciences, Institute for Integrative Genome Biology, University of California, Riverside, CA, United States; Department of Biology, University of Mississippi, Oxford, MS, United States
推荐引用方式 GB/T 7714	Qiu Y.,Pasoreck E.K.,Yoo C.Y.,et al. RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime[J],2021,12(1).
APA	Qiu Y..,Pasoreck E.K..,Yoo C.Y..,He J..,Wang H..,...&Chen M..(2021).RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime.Nature Communications,12(1).
MLA	Qiu Y.,et al."RCB initiates Arabidopsis thermomorphogenesis by stabilizing the thermoregulator PIF4 in the daytime".Nature Communications 12.1(2021).