Strawberry
The genome of woodland strawberry (Fragaria vesca)
The woodland strawberry, Fragaria vesca (2n=2x=14) is a versatile experimental plant system. This diminutive herbaceous perennial has a small genome (206Mb), is amenable to genetic transformation, and shares substantial sequence identity with the cultivated strawberry (F. * ananassa) as well as other economically important members of the Rosaceae family.  Here we report the draft F. vesca genome, which we have sequenced to 39* coverage exclusively using second-generation technology and de novo assembly. Anchorage to the genetic linkage map assembles the genome into seven pseudochromosomes. This diploid strawberry lacks large genome duplications shared among other rosids. Gene prediction modeling identified 34,809 genes, with the vast majority supported by transcriptome mapping. Genes critical to valuable horticultural traits such as flavor, nutritional value and flowering time are identified. Macro-syntenic relationships between Fragaria and Prunus permit reconstruction of a hypothetical ancestral Rosaceae genome having nine chromosomes.  Inclusion of Fragaria sequence in a phylogenetic analysis of 154 protein-coding genes suggests that Populus should be reassigned from Fabidae to Malvidae.