Global transgenerational gene expression dynamics in two nascent allohexaploid wheat lines analogous in genome constitution to common wheat (Triticum aestivum)

ABSTRACT: Alteration in gene expression accompanying initial stages of allopolyploidy is a prominent feature in plants, but its spectrum and model are highly idiosyncratic. We used multi-colour GISH to identify individuals from two nascent allohexaploid wheat lines between Triticum turgidum and Aegilops tauschii, which had a transgenerationally stable chromosomal constitution mimicking that of common wheat. We performed genomewide analysis of gene expression for these plants along with their parental species using the Affymetrix GeneChip Wheat Genome-Array. Comparison with parental species coupled with inclusion of empirical mid-parent values (MPVs) revealed two patterns of alteration in gene expression in the allohexaploid lines: parental dominance expression and nonadditive expression. Genes in

ORGANISM(S): Triticum durum

SUBMITTER: bao qi 

PROVIDER: E-GEOD-29882 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress