摘要
植物光敏色素作用因子(PIFs)属于碱性螺旋-环-螺旋(bHLH)转录因子家族,具有APB和APA保守结构域,可与光敏色素直接作用,是连接植物体内外信号的桥梁。植物下胚轴作为连接根与茎的关键节点,对于子叶出土以及后续生长具有重要意义。PIFs通过整合光和温度等植物体外部环境信号与生长素等植物内部信号,与多种蛋白相互作用,构成植物下胚轴伸长调控网络,参与光形态与热形态建成。文章主要讨论PIFs转录因子在光照、遮阴、生物钟及高温方面参与调控植物下胚轴伸长的最新研究,并对PIFs转录因子研究现状进行总结与展望,为进一步研究PIFs转录因子的功能及调控机制提供参考。
Plant phytochrome interacting factors(PIFs)belong to under the basic helix loop helix(bHLH)transcription factor family,and possess conserved APB and APA domains.These domains enable them to directly interface with phytochrome,effectively serving as crucial bridges that link the internal and external signals within plants.The plant hypocotyl,as a critical junction connecting the root and the stem,plays vital role in facilitating the emergence of cotyledons and fueling subsequent growth.PIFs achieve integration by combining external environmental cues such as light and temperature with internal hormonal signals like auxin.Through this process,they interact with a diverse array of proteins,thereby constructing a sophisticated regulatory network that governs hypocotyl elongation.This network is integral to the processes of light morphogenesis and thermal morpho-genesis.This review principally focused on delving into the most recent research advancements concerning PIF transcription factors.Specifically,it examined their involvement in modulating plant hypocotyl elongation under varying conditions,including exposure to light,shade avoidance responses,the influence of the biological clock,and high-temperature scenarios.Additionally,it comprehensively summarized and looked ahead to the current research landscape of PIF transcription factors,aiming to furnish a valuable reference for future investigations into the functional mechanisms and regulatory pathways of these factors.
作者
杨达
范梓晗
杨静莉
YANG Da;FAN Zihan;YANG Jingli(College of Forestry,Northeast Forestry University,Harbin 150006,China)
出处
《东北农业大学学报》
北大核心
2025年第2期179-188,共10页
Journal of Northeast Agricultural University
基金
国家自然科学基金面上项目(31870649)。
关键词
PIFs
下胚轴伸长
光信号
生物钟
遮阴
高温
PIFs
hypocotyl elongation
light signal
circadian rhythm
shade avoidance
high temperature
作者简介
第一作者:杨达(1999-),男,硕士研究生,研究方向为林木遗传育种。E-mail:yd15192971926@163.com。;通信作者:杨静莉,教授,博士,博士生导师,研究方向为林木遗传育种。E-mail:yifan85831647@163.com。
