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Chaperone-like protein DAY plays critical roles in photomorphogenesis.

ABSTRACT: Photomorphogenesis, light-mediated development, is an essential feature of all terrestrial plants. While chloroplast development and brassinosteroid (BR) signaling are known players in photomorphogenesis, proteins that regulate both pathways have yet to be identified. Here we report that DE-ETIOLATION IN THE DARK AND YELLOWING IN THE LIGHT (DAY), a membrane protein containing DnaJ-like domain, plays a dual-role in photomorphogenesis by stabilizing the BR receptor, BRI1, as well as a key enzyme in chlorophyll biosynthesis, POR. DAY localizes to both the endomembrane and chloroplasts via its first transmembrane domain and chloroplast transit peptide, respectively, and interacts with BRI1 and POR in their respective subcellular compartments. Using genetic analysis, we show that DAY acts independently on BR signaling and chlorophyll biogenesis. Collectively, this work uncovers DAY as a factor that simultaneously regulates BR signaling and chloroplast development, revealing a key regulator of photomorphogenesis that acts across cell compartments.

SUBMITTER: Lee HS

PROVIDER: S-EPMC8263706 | biostudies-literature | 2021 Jul

REPOSITORIES: biostudies-literature

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Chaperone-like protein DAY plays critical roles in photomorphogenesis.

Lee Ho-Seok HS Choi Ilyeong I Jeon Young Y Ahn Hee-Kyung HK Cho Huikyong H Kim JiWoo J Kim Jae-Hee JH Lee Jung-Min JM Lee SungHee S Bünting Julian J Seo Dong Hye DH Lee Tak T Lee Du-Hwa DH Lee Insuk I Oh Man-Ho MH Kim Tae-Wuk TW Belkhadir Youssef Y Pai Hyun-Sook HS

Nature communications 20210707 1

Photomorphogenesis, light-mediated development, is an essential feature of all terrestrial plants. While chloroplast development and brassinosteroid (BR) signaling are known players in photomorphogenesis, proteins that regulate both pathways have yet to be identified. Here we report that DE-ETIOLATION IN THE DARK AND YELLOWING IN THE LIGHT (DAY), a membrane protein containing DnaJ-like domain, plays a dual-role in photomorphogenesis by stabilizing the BR receptor, BRI1, as well as a key enzyme i ...[more]

PMID: 34234144

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Chaperone-like protein DAY plays critical roles in photomorphogenesis.

Publications

Chaperone-like protein DAY plays critical roles in photomorphogenesis.

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