title: External factors accelerate expression divergence between duplicate genes.
abstract: We examined the evolution of expression of duplicate genes in Arabidopsis thaliana, by analyzing 512 data sets of gene expression microarrays and 2022 recent duplicate gene pairs. Expression divergence between gene duplicates is significantly greater in response to environmental stress than to developmental processes. A slow rate of expression divergence during development might offer dosage-dependent selective advantage, whereas rapid expression divergence in response to external changes might accelerate adaptation.
authors.affiliation: Section of Molecular Cell and Developmental Biology and Institute for Cellular and Molecular Biology, One University Station, A-4800, University of Texas, Austin, TX 78712-0159, USA.
authors.forename: Misook
authors.initials: M
authors.lastname: Ha
authors.forename: Wen-Hsiung
authors.initials: WH
authors.lastname: Li
authors.forename: Z Jeffrey
authors.initials: ZJ
authors.lastname: Chen
mesh_terms: D017360:Arabidopsis / Q000235:genetics* / Q000254:growth & development; D029681:Arabidopsis Proteins / Q000235:genetics*; D019143:Evolution, Molecular; D020440:Gene Duplication; D020869:Gene Expression Profiling; D018506:Gene Expression Regulation, Plant; D020131:Genes, Duplicate; D017343:Genes, Plant; D014644:Genetic Variation
chemical_list: D029681:Arabidopsis Proteins