Jilin Province Engineering Laboratory of Plant Genetic Improvement, College of Plant Science, Jilin University, 5333 Xi'an Road, Changchun, 130062, China.
Basic Forestry and Proteomics Research Center, Fujian Agriculture and Forestry University, Fuzhou, 350002, China.
Nat Commun. 2022 May 12;13(1):2631. doi: 10.1038/s41467-022-30231-9.
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.
隐花色素是蓝光受体，调节植物的生长和发育。它们也是动物中央时钟振荡器的核心组成部分。虽然已经报道植物隐花色素在蓝光下调节生物钟，但具体机制尚不清楚。本研究表明，拟南芥隐花色素 2（CRY2）在植物细胞中对蓝光作出反应时与 TCP22 转录因子形成光体。本研究提供了证据表明 PPK 激酶影响这些光体的特性，并且这些成分与 LWD 转录调节剂一起，可以正向调节编码生物钟中央振荡器的核心成分 CCA1 的表达。
