Comprehensive gene expression atlas for the Arabidopsis MAP kinase signalling pathways
Article first published online: 15 JUL 2008
© The Authors (2008). Journal compilation © New Phytologist (2008)
Volume 179, Issue 3, pages 643–662, August 2008
How to Cite
Menges, M., Dóczi, R., Ökrész, L., Morandini, P., Mizzi, L., Soloviev, M., Murray, J. A. H. and Bögre, L. (2008), Comprehensive gene expression atlas for the Arabidopsis MAP kinase signalling pathways. New Phytologist, 179: 643–662. doi: 10.1111/j.1469-8137.2008.02552.x
- Issue published online: 15 JUL 2008
- Article first published online: 15 JUL 2008
- Received: 5 May 2008 Accepted: 29 May 2008
- functional prediction;
- gene expression;
- mitogen activated protein kinase (MAPK);
- • Mitogen activated protein kinase (MAPK) pathways are signal transduction modules with layers of protein kinases having c. 120 genes in Arabidopsis, but only a few have been linked experimentally to functions.
- • We analysed microarray expression data for 114 MAPK signalling genes represented on the ATH1 Affymetrix arrays; determined their expression patterns during development, and in a wide range of time-course microarray experiments for their signal-dependent transcriptional regulation and their coregulation with other signalling components and transcription factors.
- • Global expression correlation of the MAPK genes with each of the represented 21 692 Arabidopsis genes was determined by calculating Pearson correlation coefficients. To group MAPK signalling genes based on similarities in global regulation, we performed hierarchical clustering on the pairwise correlation values. This should allow inferring functional information from well-studied MAPK components to functionally uncharacterized ones. Statistical overrepresentation of specific gene ontology (GO) categories in the gene lists showing high expression correlation values with each of the MAPK components predicted biological themes for the gene functions.
- • The combination of these methods provides functional information for many uncharacterized MAPK genes, and a framework for complementary future experimental dissection of the function of this complex family.