Out of step： The function of TALE homeodomain transcription factors that regulate shoot meristem maintenance and meristem identity

作     者：Shang WU Harley M. S. SMITH 

作者机构：Center for Plant Cell Biology Institute of Integrative Genome Biology Department of Botany and Plant Sciences University of CaliforniaRiverside CA 92521 USA 

出 版 物：《Frontiers in Biology》 (生物学前沿（英文版）)

年 卷 期：2012年第7卷第2期

页      面：144-154页

核心收录：

学科分类：0710[理学-生物学] 0831[工学-生物医学工程（可授工学、理学、医学学位）] 0830[工学-环境科学与工程（可授工学、理学、农学学位）] 1001[医学-基础医学(可授医学、理学学位)] 07[理学] 071009[理学-细胞生物学] 09[农学] 071007[理学-遗传学] 0901[农学-作物学] 0836[工学-生物工程] 090102[农学-作物遗传育种] 0713[理学-生态学] 

基　　金：acknowledge the Center for Plant Cell Biology and the Department of Botany and Plant Sciences at the University of California  Riverside  for support 

主　　题：shoot development meristem flowering patterning homeodomain 

摘      要：The indeterminate growth pattern displayed by shoots is mediated by the proper maintenance of the shoot meristem. Meristem maintenance is dependent upon the balance of stem cell perpetuation in the central zone （CZ） and organogenesis in the peripheral zone （PZ）. Although the mechanisms that coordinate CZ and PZ function is not understood, meristem cell fate is likely achieved by the spatial interplay between gene regulatory networks and hormone signaling pathways. During shoot maturation, the identity of the shoot meristem as well as the lateral organs are transformed during the vegetative and reproductive transitions. Studies in model plant systems indicate that three amino acid extension （TALE） homeodomain proteins integrate signaling events that transform the identity of the shoot meristem and establish reproductive patterns of growth. This review will highlight the function of TALE homeodomain transcription factors that regulate shoot meristem cell fate and also function with phase specific regulators to maintain shoot meristem identity.