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Type: Journal article
Title: EAT1 promotes tapetal cell death by regulating aspartic proteases during male reproductive development in rice
Author: Niu, N.
Liang, W.
Yang, X.
Jin, W.
Wilson, Z.
Hu, J.
Zhang, D.
Citation: Nature Communications, 2013; 4(1):1445-1-1445-11
Publisher: Nature Publishing Group
Issue Date: 2013
ISSN: 2041-1723
Statement of
Ningning Niu, Wanqi Liang, Xijia Yang, Weilin Jin, Zoe A. Wilson, Jianping Hu and Dabing Zhang
Abstract: Programmed cell death is essential for the development of multicellular organisms, yet pathways of plant programmed cell death and its regulation remain elusive. Here we report that ETERNAL TAPETUM 1, a basic helix-loop-helix transcription factor conserved in land plants, positively regulates programmed cell death in tapetal cells in rice anthers. eat1 exhibits delayed tapetal cell death and aborted pollen formation. ETERNAL TAPETUM 1 directly regulates the expression of OsAP25 and OsAP37, which encode aspartic proteases that induce programmed cell death in both yeast and plants. Expression and genetic analyses revealed that ETERNAL TAPETUM 1 acts downstream of TAPETUM DEGENERATION RETARDATION, another positive regulator of tapetal programmed cell death, and that ETERNAL TAPETUM 1 can also interact with the TAPETUM DEGENERATION RETARDATION protein. This study demonstrates that ETERNAL TAPETUM 1 promotes aspartic proteases triggering plant programmed cell death, and reveals a dynamic regulatory cascade in male reproductive development in rice.
Keywords: Chromosomes, Plant; Saccharomyces cerevisiae; Oryza sativa; Pollen; Plant Proteins; Physical Chromosome Mapping; Phylogeny; Cell Death; Organ Specificity; Gene Expression Regulation, Plant; Amino Acid Sequence; Base Sequence; Protein Binding; Reproduction; Phenotype; Mutation; Genes, Plant; Models, Biological; Molecular Sequence Data; Basic Helix-Loop-Helix Transcription Factors; Aspartic Acid Proteases
Rights: © 2013 Macmillan Publishers Limited. All rights reserved.
RMID: 0030023457
DOI: 10.1038/ncomms2396
Appears in Collections:Agriculture, Food and Wine publications

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