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|Title:||EAT1 promotes tapetal cell death by regulating aspartic proteases during male reproductive development in rice|
|Citation:||Nature Communications, 2013; 4(1):1445-1-1445-11|
|Publisher:||Nature Publishing Group|
|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.|
|Appears in Collections:||Agriculture, Food and Wine publications|
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