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Arabidopsis cryptochrome 2 forms photobodies with TCP22 under blue light and regulates the circadian clock.

ABSTRACT: Cryptochromes are blue light receptors that regulate plant growth and development. They also act as the core components of the central clock oscillator in animals. Although plant cryptochromes have been reported to regulate the circadian clock in blue light, how they do so is unclear. Here we show that Arabidopsis cryptochrome 2 (CRY2) forms photobodies with the TCP22 transcription factor in response to blue light in plant cells. We provide evidence that PPK kinases influence the characteristics of these photobodies and that together these components, along with LWD transcriptional regulators, can positively regulate the expression of CCA1 encoding a central component of the circadian oscillator.

SUBMITTER: Mo W

PROVIDER: S-EPMC9098493 | biostudies-literature | 2022 May

REPOSITORIES: biostudies-literature

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Arabidopsis cryptochrome 2 forms photobodies with TCP22 under blue light and regulates the circadian clock.

Mo Weiliang W Zhang Junchuan J Zhang Li L Yang Zhenming Z Yang Liang L Yao Nan N Xiao Yong Y Li Tianhong T Li Yaxing Y Zhang Guangmei G Bian Mingdi M Du Xinglin X Zuo Zecheng Z

Nature communications 20220512 1

Cryptochromes are blue light receptors that regulate plant growth and development. They also act as the core components of the central clock oscillator in animals. Although plant cryptochromes have been reported to regulate the circadian clock in blue light, how they do so is unclear. Here we show that Arabidopsis cryptochrome 2 (CRY2) forms photobodies with the TCP22 transcription factor in response to blue light in plant cells. We provide evidence that PPK kinases influence the characteristics ...[more]

PMID: 35551190

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