【摘要】 转录因子在棉纤维细胞分化发育过程中起重要的调节作用。近年来已经有多个与棉纤维发育相关的转录因子被研究报道,主要包括MYB、HD-ZIP、MADS、TCP等家族成员,其中研究最为广泛的为MYB类转录因子。GL1类的MYB转录因子和MIXTA类的MYB转录因子通过不同的调控方式参与对棉纤维细胞发育的调控。对这些转录因子的深入研究,对于揭示棉纤维细胞分化发育的分子机理具有重要的意义。本文就这方面的研究进展作一简要概述。更多还原

【Abstract】 Transcription factors play important regulatory roles in various stages of cotton fiber development,beginning with initiation and continuing through secondary cell wall synthesis and maturity.In recent years,many transcription factors related to cotton fiber development have been reported,including MYB,HD-ZIP,MADS,and TCP families.Among them,MYB transcription factors have been identified as essential proteins involved in this process.Arabidopsis trichome development,which has been well characterized at the molecular level,is regulated by a MYB-bHLH-WD40 protein complex.As several studies using cotton fiber-related genes have demonstrated a close relationship between cotton seed fibers and Arabidopsis leaf trichomes,cotton fiber development and Arabidopsis leaf trichome differentiation likely share similar regulatory mechanisms.MIXTA-like MYB genes such as GhMYB25 and GhMYB25-like also have significant regulatory roles in cotton fiber development.GL1-like MYB genes and MIXTA-like MYB genes most likely control cotton fiber development through different regulatory networks.Extensive research on transcription factors related to cotton fiber cells has provided insights into the molecular mechanisms of fiber cell differentiation and development.This paper discusses some achievements in this field.更多还原