MRNA and sRNA Transcriptomes Reveal Insights into Dynamic Homoeolog Regulation for Allopolyploid Heterosis in Nascent Hexaploid Wheat

ABSTRACT: Nascent allohexaploid wheat may represent the initial genetic state for the evolution and domestication of common wheat, which arose by combining the AB genomes of tetraploid Triticum turgidum with the D genome from Aegilops tauschii and out-competed its parents in growth vigor and adaptability. To better understand the molecular basis for this success, we performed mRNA and small RNA expression analyses in three tissues of nascent allohexaploid wheat and its following generations, their progenitors, and Chinese Spring, with the assistance of newly released A and D genome sequences. We found that nonadditive expression was rare among protein-coding genes which exhibited profound parental expression level dominance, with genes of total homoeolog expression level in nascent allohexaploid pro

ORGANISM(S): Triticum dicoccon

SUBMITTER: Mengdi Liu 

PROVIDER: E-GEOD-56587 | biostudies-arrayexpress |

REPOSITORIES: biostudies-arrayexpress