ADA2b acts to positively regulate blue light-mediated photomorphogenesis in Arabidopsis.
Biochem Biophys Res Commun
; 717: 150050, 2024 Jul 12.
Article
em En
| MEDLINE
| ID: mdl-38718571
ABSTRACT
Cryptochromes (CRYs) act as blue light photoreceptors to regulate various plant physiological processes including photomorphogenesis and repair of DNA double strand breaks (DSBs). ADA2b is a conserved transcription co-activator that is involved in multiple plant developmental processes. It is known that ADA2b interacts with CRYs to mediate blue light-promoted DSBs repair. Whether ADA2b may participate in CRYs-mediated photomorphogenesis is unknown. Here we show that ADA2b acts to inhibit hypocotyl elongation and hypocotyl cell elongation in blue light. We found that the SWIRM domain-containing C-terminus mediates the blue light-dependent interaction of ADA2b with CRYs in blue light. Moreover, ADA2b and CRYs act to co-regulate the expression of hypocotyl elongation-related genes in blue light. Based on previous studies and these results, we propose that ADA2b plays dual functions in blue light-mediated DNA damage repair and photomorphogenesis.
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Base de dados:
MEDLINE
Assunto principal:
Arabidopsis
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Hipocótilo
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Regulação da Expressão Gênica de Plantas
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Proteínas de Arabidopsis
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Luz
Idioma:
En
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
China