Phylogenetic analysis of two single-copy nuclear genes revealed origin of tetraploid barley Hordeum marinum.

ABSTRACT: Sea barley Hordeum marinum is an important germplasm resource. However, the origin of this tetraploid H. marinum subsp. gussoneanum is still unclear, which has caused great perplexity to the exploration and utilization of germplasm resources. We used two single-copy nuclear genes, thioredoxin-like gene (TRX) and waxy1 gene encoding granule-bound starch synthase (WAXY1) to analyze 41 accessions of Hordeum marinum. The phylogenies of different genes told different story of evolution of tetraploids of H. marinum subsp. gussoneanum. The phylogenetic trees showed that two distinct copies of sequences from both genes were detected for some accessions of the tetraploids of H. marinum subsp. gussoneanum, and diploid marinum might also contribute to the origin and evolution of the tetraploid gusson

SUBMITTER: Yin B 

PROVIDER: S-EPMC7326175 | biostudies-literature | 2020

REPOSITORIES: biostudies-literature