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The Transcription Factor HY5 Is Involved in the Cytokinin-Dependent Regulation of the Expression of Genes Encoding Proteins Associated with Bacterial Plastid RNA-Polymerase during De-Etiolation of Arabidopsis thaliana.
Doklady Biochemistry and Biophysics ( IF 0.8 ) Pub Date : 2020-07-06 , DOI: 10.1134/s1607672920020076
A S Doroshenko 1 , M N Danilova 1 , A A Andreeva 1, 2 , N V Kudryakova 1 , Vl V Kuznetsov 1 , V V Kusnetsov 1
Affiliation  

Abstract

HY5 (ELONGATED HYPOCOTYL5), a bZIP transcription factor, is one of the main regulators of light and hormonal signaling. Among the targets of this gene, the genes for the transcriptional complex of chloroplasts whose coordinated expression ensures the initial stages of photomorphogenesis are particularly significant. In this study, we showed that, during de-etiolation, HY5 functions as a positive CK-dependent regulator of the expression of genes encoding proteins associated with plastid RNA polymerase (PAP), which functions below the primary chain of sensing the cytokinin signal. The absence of blocking effect of mutations of the CRY1, CRY2, PHYA, and PHYB photoreceptor genes on the CK-dependent content of PAP gene transcripts indicates the parallel action of the hormone and light in their regulation.


中文翻译:

转录因子HY5参与拟南芥脱黄化过程中与细菌质体RNA聚合酶相关的蛋白质编码基因表达的细胞分裂素依赖性调节。

摘要

HY5(长链HYPOCOTYL5)是bZIP转录因子,是光和激素信号的主要调节因子之一。在该基因的靶标中,叶绿体转录复合物的基因的协调表达确保了光形态发生的初始阶段特别重要。在这项研究中,我们表明,在去异烟酸化过程中,HY5作为CK依赖的正调控因子,调控与质体RNA聚合酶(PAP)相关的蛋白质的基因表达,其功能低于感知细胞分裂素信号的主链。不存在阻断的突变效应的CRY1CRY2PHYAPHYB上的CK-从属内容感光体的基因PAP基因转录物表明激素和光在其调节中具有平行作用。
更新日期:2020-07-06
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