光敏色素互作因子参与生长素调控的植物生长发育

doi:10.13560/j.cnki.biotech.bull.1985.2021-1475

摘要/Abstract

摘要：

光敏色素互作因子（PIFs）属于碱性螺旋-环-螺旋（bHLH）转录因子家族，能在细胞核内与活性形式的光敏色素（PHYS）相互作用并被降解。PIFs参与多种信号转导途径，调控植物的生长发育，如抑制种子萌发、促进幼苗的暗形态建成和植物开花等。作为胞内信号调控的重要组分，PIFs广泛参与植物外部环境因素（如高温、光），以及内部激素（如生长素、细胞分裂素和油菜素内酯等）介导的信号网络。当光信号和温度变化时，PIFs会通过影响生长素合成、运输和信号转导，参与生长素路径，调控植物生长发育。论文就PIFs参与生长素调控的植物生长发育研究进展进行综述，并对未来研究方向加以展望。

关键词: 光敏色素互作因子, 生长素, 光信号, 生长发育

Abstract:

Phytochrome interacting factors（PIFs）belong to the basic helix-loop-helix（bHLH）transcription factor family，they interact specifically with the active conformer of phytochrome（PHYS）photoreceptors in the nucleus and are decomposed. PIFs participate in various signal transduction pathways to regulate plant growth and development，such as repressing seed germination，promoting seedling skotomorphogenesis and flowering time. As an important part of the regulation of intracellular signals，PIFs are widely involved in the signaling network mediated by external environmental factors（such as high temperature，light）and internal hormones（such as auxin，cytokinin，brassinolide，etc.）. When the light signal and temperature change，PIFs are involved in auxin synthesis，transport and signaling to regulate plant growth and development. This review mainly introduces the advances of PIFs involving in auxin-regulated plant growth and development in recent years，and prospects the future research direction.

Key words: phytochrome interacting factors, auxin, light signal, growth and development

钱静洁, 林苏梦, 张冬平, 高勇. 光敏色素互作因子参与生长素调控的植物生长发育[J]. 生物技术通报, 2022, 38(10): 29-33.

QIAN Jing-jie, LIN Su-meng, ZHANG Dong-ping, GAO Yong. Phytochrome Interacting Factors Involving in Auxin-regulated Plant Growth and Development[J]. Biotechnology Bulletin, 2022, 38(10): 29-33.

图/表 1

图1 光敏色素互作因子参与生长素的合成、运输和信号转导调控植物生长发育 A：低比例红光/远红光促进PIFs积累，PIFs促进TAA1、YUC及CYPT9B2的表达，抑制UGT76F1的表达，调控生长素的合成；B：紫外光抑制PIFs表达，影响生长素合成，调控下胚轴伸长；C：低比例红光/远红光下，PIFs参与生长素运输和信号转导，调控植物生长发育；D：蓝光抑制PIFs表达，影响生长素信号通路；E：高温促进PIF4积累，调控生长素合成、运输以及信号转导；F：自然光抑制PIFs表达，调控植物不同部位lirSAUR的表达，影响植物生长发育

Fig.1 PIFs participate in auxin synthesis，transport and signaling to regulate plant growth and development A：Low red/far-red ratios promote PIFs accumulation. PIFs regulate the auxin synthesis by promoting the expressions of TAA1，YUC，and CYPT9B2 and inhibiting the expression of UGT76F1. B：UV-B inhibits PIFs expression. PIFs regulate the auxin synthesis to influence hypocotyl elongation. C：Under low red/far-red ratios，PIFs involve in auxin transport and signaling to regulate plant growth and development. D：Blue light inhibits PIFs expression to regulate the auxin signaling pathway. E：High temperature promotes PIF4 accumulation to regulate auxin synthesis，transport and signaling transduction. F：Natural light inhibits the expressions of PIFs. PIFs regulate the expression of lirSAUR gene in different organs of plants to affect plant growth and development

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