Origin and evolution of the octoploid strawberry genome

Cultivated strawberry emerged from the hybridization of two wild octoploid species, both descendants from the merger of four diploid progenitor species into a single nucleus more than 1 million years ago. Here we report a near-complete chromosome-scale assembly for cultivated octoploid strawberry (Fragaria × ananassa) and uncovered the origin and evolutionary processes that shaped this complex allopolyploid. We identified the extant relatives of each diploid progenitor species and provide support for the North American origin of octoploid strawberry. We examined the dynamics among the four subgenomes in octoploid strawberry and uncovered the presence of a single dominant subgenome with significantly greater…

• NS
  National Science Foundation

  Awards: 1737898, DEB 1737898, 1757043
• UD
  U.S. Department of Agriculture

  Award: 1009804
• CS
  California Strawberry Commission
• MS
  Michigan State University
• NI
  National Institute of Food and Agriculture

  Award: 2017-51181-26833
• CO
  College of Engineering, Michigan State University