Genome-wide proteomic profiling reveals the role of dominance protein expression in heterosis in immature maize ears.

ABSTRACT: Heterosis refers to the phenomenon in which hybrid progeny show superior performance relative to their parents. Early maize ear development shows strong heterosis in ear architecture traits and greatly affects grain yield. To explore the underlying molecular mechanisms, genome-wide proteomics of immature ears of maize hybrid ZD909 and its parents were analyzed using tandem mass tag (TMT) technology. A total of 9,713 proteins were identified in all three genotypes. Among them, 3,752 (38.6%) proteins were differentially expressed between ZD909 and its parents. Multiple modes of protein action were discovered in the hybrid, while dominance expression patterns accounted for 63.6% of the total differentially expressed proteins (DEPs). Protein pathway enrichment analysis revealed that high paren

SUBMITTER: Hu X 

PROVIDER: S-EPMC5700959 | biostudies-literature | 2017 Nov

REPOSITORIES: biostudies-literature