J Integr Plant Biol ›› 2011, Vol. 53 ›› Issue (11): 892-900.DOI: 10.1111/j.1744-7909.2011.01078.x

Special Issue: Sexual Reproductions

• Plant Reproduction Biology • Previous Articles     Next Articles

A Genetic Pathway for Tapetum Development and Function in Arabidopsis

Jun Zhu, Yue Lou, Xiaofeng Xu and Zhong-Nan Yang*   

  1. College of Life and Environmental Sciences, Shanghai Normal University, Shanghai 200234, China
    *Corresponding author Tel: +86 21 6432 4650; Fax: +86 21 6432 4190 E-mail: znyang@shnu.edu.cn
    These authors contributed equally to this work.
  • Received:2011-07-22 Accepted:2011-09-23 Published:2011-09-29

Abstract:

In anther development, tapetal cells take part in complex processes, including endomitosis and apoptosis (programmed cell death). The tapetum provides many of the proteins, lipids, polysaccharides and other molecules necessary for pollen development. Several transcription factors, including DYT1, TDF1, AMS, MS188 and MS1, have been reported to be essential for tapetum development and function in Arabidopsis thaliana. Here, we present a detailed cytological analysis of knockout mutants for these genes, along with an in situ RNA hybridization experiment and double mutant analysis showing that these transcription factors form a genetic pathway in tapetum development. DYT1, TDF1 and AMS function in early tapetum development, while MS188 and MS1 are important for late tapetum development. The genetic pathway revealed in this work facilitates further investigation of the function and molecular mechanisms of tapetum development in Arabidopsis.

Zhu J, Lou Y, Xu X, Yang ZN (2011) A genetic pathway for tapetum development and function in Arabidopsis. J. Integr. Plant Biol. 53(11), 892–900.

Key words: anther development, genetic pathway, pollen development, tapetum, transcription factor, DYT1, TDF1, AMS, MS188, MS1

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