Abstract
AtGenExpress is a multinational project to collect and distribute transcriptome-data sets of Arabidopsis thalinana. using a highly standardized platform Affymetrix GeneChip, ATH1, which covers most Arabidopsis genes in the genome (about 23,000 probe sets corresponding to about 25,000 genes). The consortium collected data of developmental series, organ specificity series, light response series, stress response series, pathogen response series, hormone response series, nutrition response series, and etc. The data consists of >1,000 GeneChips (hybridizations). More than 20,000 genes were detected to be expressed significantly in any of the experiments. This is one of the largest numbers of gene expression detected in an organism. All collected data are integrated, displayed, distributed for public access at TAIR, http://www.arabidopsis.org. RIKEN-data set is also available at http://pfg.psc.riken.jp/AtGenExpress/index.html. In this presentation, we will mainly focus on how to use the data and results from large-scale clustering analyses.
