Genome interplay in the grain transcriptome of hexaploid bread wheat

, Matthias Pfeifer, Karl G. Kugler, Simen R. Sandve, Bujie Zhan, Heidi Rudi, Torgeir R. Hvidsten, Klaus F. X. Mayer, Odd-Arne Olsen

    Research output: Contribution to journalArticlepeer-review

    255 Citations (Scopus)


    Allohexaploid bread wheat (Triticum aestivum L) provides approximately 20% of calories consumed by humans. Lack of genome sequence for the three homeologous and highly similar bread wheat genomes (A, B, and D) has impeded expression analysis of the grain transcriptome. We used previously unknown genome information to analyze the cell type-specific expression of homeologous genes in the developing wheat grain and identified distinct co-expression clusters reflecting the spatiotemporal progression during endosperm development. We observed no global but cell type- and stage-dependent genome dominance, organization of the wheat genome into transcriptionally active chromosomal regions, and asymmetric expression in gene families related to baking quality. Our findings give insight into the transcriptional dynamics and genome interplay among individual grain cell types in a polyploid cereal genome.

    Original languageEnglish
    Article number1250091
    Number of pages7
    Issue number6194
    Publication statusPublished - 18 Jul 2014

    ASJC Scopus subject areas

    • General


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