Unknown,Transcriptomics,Genomics,Proteomics

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Comparison of transcriptome profile between wild-type and dao mutant plants

ABSTRACT: We identified and characterized that the rice Dioxygenase for Auxin Oxidation (dao) mutant displays pleiotropic phenotypes, including indehiscent anthers, sterile pollens, and increased free IAA levels in anthers.We conclude that DAO-mediated auxin catabolism is essential for auxin homeostasis and later stages of plant reproductive development, including anther dehiscence, and pollen viability. We used microarrays to identify differentially expressed genes in dao. For genome-wide expression analysis of dao, three replicates of WT and dao samples (RNA from mature anthers) were analyzed on Affymetrix Genechip® Rice Genome arrays by an Affymetrix service facility (CapitalBio Corporation) according to the manufacturer’s protocols. Genes showing a 2-fold change with a q-value ≤ 0.05 were considered to be differentially expressed.

ORGANISM(S): Oryza sativa Japonica Group

SUBMITTER: Zhao Gang 

PROVIDER: E-GEOD-41097 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress

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Indole-3-acetic acid (IAA), the natural auxin in plants, regulates many aspects of plant growth and development. Extensive analyses have elucidated the components of auxin biosynthesis, transport, and signaling, but the physiological roles and molecular mechanisms of auxin degradation remain elusive. Here, we demonstrate that the dioxygenase for auxin oxidation (DAO) gene, encoding a putative 2-oxoglutarate-dependent-Fe (II) dioxygenase, is essential for anther dehiscence, pollen fertility, and  ...[more]

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