Research Progress on Transcription Factors Regulating Plant Seed Development

doi:10.13560/j.cnki.biotech.bull.1985.2019-0043

Abstract

Abstract: Plant seeds are the unique reproductive organs to gymnosperms and angiosperms,also the main food source for human being survival. The process of seed development,including morphological development and seed maturation,is governed by a complex network of transcription factors,which regulate and supervise the entire process. Transcription factors include 4 functional domains：DNA binding region,oligomerization site region,nuclear localization signal region and transcription regulatory region,which regulate gene expression by interaction between the domains and the cis-element. According to current research,the WOX family regulates germ development,the HAP3 family regulates embryo morphogenesis and cell differentiation,the MADS-box family regulates the development of embryo and ovule,the NAC family regulates the growth and development of ovule integument,the bHLH family regulates the size and the morphology of seed coat cells,and the MYB family is a positive regulator of seed coat development. Members of the HAP family,LEC1,and members of the AFL subfamily of the B3 superfamily,LEC2,FUSCA3 and ABI3,interact to form a regulatory network that regulates the mature development of the seed. The Dof family of the zinc finger superfamily regulates the development of endosperm,the synthesis of storage proteins and the change of fat content in seeds,the bZIP family regulates the expression of storage genes,the AP2/EREBP family regulates the accumulation of seed volume and weight,protein and oil,and the WRKY family,IKU,MINI3,SHB1 gene and KLU gene regulate the size of a seed. This paper reviews the structure and types of transcription factors in plant seed development,analyzes the order and function of the genes,dissects the molecular regulation mechanism of seed development,and prospects the research direction and prospects,aiming at providing theoretical basis and new ideas for improving seed quality.

Key words: plant seeds, regulatory development, transcription factors

WU Yu, SHEN Yong-bao, SHI Feng-hou. Research Progress on Transcription Factors Regulating Plant Seed Development[J]. Biotechnology Bulletin, 2019, 35(11): 150-159.

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