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Letter
Nature Genetics  37, 501 - 506 (2005)
Published online: 3 April 2005; | doi:10.1038/ng1543
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A gene expression map of Arabidopsis thaliana development

Markus Schmid1, Timothy S Davison1, 2, Stefan R Henz1, Utz J Pape3, Monika Demar1, Martin Vingron3, Bernhard Schölkopf2, Detlef Weigel1, 4 & Jan U Lohmann1

1  Max Planck Institute for Developmental Biology, Spemannstrasse 37-39, 72076 Tübingen, Germany.

2  Max Planck Institute for Biological Cybernetics, Spemannstrasse 38, 72076 Tübingen, Germany.

3  Max Planck Institute for Molecular Genetics, Ihnestrasse 73, 14195 Berlin, Germany.

4  Salk Institute for Biological Studies, 10010 North Torrey Pines Road, La Jolla, California 92037, USA.

Correspondence should be addressed to Detlef Weigel weigel@weigelworld.org
Regulatory regions of plant genes tend to be more compact than those of animal genes, but the complement of transcription factors encoded in plant genomes is as large or larger than that found in those of animals1. Plants therefore provide an opportunity to study how transcriptional programs control multicellular development. We analyzed global gene expression during development of the reference plant Arabidopsis thaliana in samples covering many stages, from embryogenesis to senescence, and diverse organs. Here, we provide a first analysis of this data set, which is part of the AtGenExpress expression atlas. We observed that the expression levels of transcription factor genes and signal transduction components are similar to those of metabolic genes. Examining the expression patterns of large gene families, we found that they are often more similar than would be expected by chance, indicating that many gene families have been co-opted for specific developmental processes.


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