Genome-wide analysis of spatial and temporal gene expression in rice panicle development

The Plant Journal : for Cell and Molecular Biology
Ikuyo FurutaniJunko Kyozuka

Abstract

The basic structure of a rice inflorescence (the panicle) is determined by the pattern of branch formation, which is established at the early stages of panicle development. In this study we conducted global transcriptome profiling of the early stages of rice panicle development from phase transition to floral organ differentiation. To generate a meristem-specific gene-expression profile, shoot apical meristems (SAMs) and subsequently formed, very young panicles were collected manually and used for cDNA microarray analysis. We identified 357 out of 22,000 genes that are expressed differentially in the early stages of panicle development, and the 357 genes were classified into seven groups based on their temporal expression patterns. The most noticeable feature is that a fairly small number of genes, which are extensively enriched in transcription factors, are upregulated in the SAM immediately after phase transition. In situ hybridization analysis showed that each gene analysed exhibits a unique and interesting localization of mRNA. Remarkably, one of the transcription factors was proven to be a close downstream component of the pathway in which LAX, a major regulator of panicle branching, acts. These results suggest that our st...Continue Reading

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Citations

Apr 9, 2010·Functional & Integrative Genomics·Rupesh DeshmukhNagendra Singh
Jan 23, 2009·Plant Molecular Biology·Yun ZhuGuoying Wang
Apr 3, 2012·Biologie aujourd'hui·Aurélie Vialette-Guiraud, Michiel Vandenbussche
Feb 29, 2008·Proceedings of the National Academy of Sciences of the United States of America·Nagashree N RaoUsha Vijayraghavan
Mar 23, 2012·Plant & Cell Physiology·Sung-Hyun KimKo Shimamoto
Mar 8, 2016·Biochimica Et Biophysica Acta·Xiaobai LiSheng Zhang
Jul 22, 2009·Plant Biotechnology Journal·Xiaojun ZhaJinshui Yang
Jan 22, 2013·Journal of Integrative Plant Biology·Vittoria Brambilla, Fabio Fornara
Sep 8, 2011·The Plant Journal : for Cell and Molecular Biology·Hinako TakehisaYoshiaki Nagamura
Dec 17, 2009·The Plant Journal : for Cell and Molecular Biology·Lei WangQifa Zhang
Mar 5, 2016·The Plant Journal : for Cell and Molecular Biology·Thomas W R HarropMartin M Kater
Feb 25, 2015·BMC Genomics·Ling LiEve Syrkin Wurtele
Sep 8, 2009·Seminars in Cell & Developmental Biology·Robert Sablowski
Dec 5, 2006·Current Opinion in Plant Biology·Elizabeth A Kellogg
May 30, 2008·Plant Biotechnology Journal·Sangam DwivediRodomiro Ortiz
Jul 28, 2019·Journal of Experimental Botany·Thomas W R HarropHélène Adam

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