Shade-induced lncRNA PUAR promotes shade response by repressing PHYA expression

Zhu Tongdan; Yang Chuanwei; Xie YuHuang ShaLi Lin

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Shade-induced lncRNA PUAR promotes shade response by repressing PHYA expression

机译：Shade-induced lncRNA PUAR promotes shade response by repressing PHYA expression

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Shade avoidance syndrome (SAS) commonly occurs in plants experiencing vegetative shade, triggering a series of morphological and physiological changes for the plants to reach more light. A number of positive regulators, such as PHYTOCHROME-INTERACTING 7 (PIF7), and negative regulators, such as PHYTOCHROMES, are known to ensure appropriate SAS. Here, we identify 211 shade-regulated long non-coding RNAs (lncRNAs) in Arabidopsis. We further characterize PUAR (PHYA UTR Antisense RNA), a lncRNA produced from the intron of the 5 ' UTR of the PHYTOCHROME A (PHYA) locus. PUAR is induced by shade and promotes shade-induced hypocotyl elongation. PUAR physically associates with PIF7 and represses the shade-mediated induction of PHYA by blocking the binding of PIF7 to the 5 ' UTR of PHYA. Our findings highlight a role for lncRNAs in SAS and provide insight into the mechanism of PUAR in regulating PHYA gene expression and SAS.

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《EMBO reports》 |2023年第5期|共16页
作者
Zhu Tongdan; Yang Chuanwei; Xie YuHuang ShaLi Lin;
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Fudan Univ;

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正文语种英语
中图分类分子生物学;
关键词
lncRNA; phyA; PIF7; shade avoidance syndrome; transcription; AVOIDANCE-RESPONSE; GENE-EXPRESSION; PHYTOCHROME-A; ARABIDOPSIS; RNA; TRANSCRIPTION; DATABASE; LOOP;

Shade-induced lncRNA PUAR promotes shade response by repressing PHYA expression

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