Whole-genome duplications are radical evolutionary events that have driven speciation and adaptation in many taxa. Higher-order
polyploids have complex histories often including interspecific hybridization and dynamic genomic changes. This chromosomal
reshuffling is poorly understood for most polyploid species, despite their evolutionary and agricultural importance, due to the
challenge of distinguishing...
Whole-genome duplications are radical evolutionary events that have driven speciation and adaptation in many taxa. Higher-order
polyploids have complex histories often including interspecific hybridization and dynamic genomic changes. This chromosomal
reshuffling is poorly understood for most polyploid species, despite their evolutionary and agricultural importance, due to the
challenge of distinguishing...
We studied the natural hybrid (Fragaria ×ananassa subsp. cuneifolia) between
two sexually dimorphic octoploid strawberry species (F. virginiana and F.
chiloensis) to gain insight into the dynamics of sex chromosomes and the
genesis of sexual dimorphism. Male sterility is dominant in both the parental
species and thus will be inherited...
We studied the natural hybrid (Fragaria ×ananassa subsp. cuneifolia) between
two sexually dimorphic octoploid strawberry species (F. virginiana and F.
chiloensis) to gain insight into the dynamics of sex chromosomes and the
genesis of sexual dimorphism. Male sterility is dominant in both the parental
species and thus will be inherited...
We studied the natural hybrid (Fragaria ×ananassa subsp. cuneifolia) between
two sexually dimorphic octoploid strawberry species (F. virginiana and F.
chiloensis) to gain insight into the dynamics of sex chromosomes and the
genesis of sexual dimorphism. Male sterility is dominant in both the parental
species and thus will be inherited...
Geographic patterns of genetic variation in wild species reflect the interplay of ecological and evolutionary processes. We assessed genetic variation in three genomes across four North American diploid strawberry taxa, with special emphasis on the gynodioecious Fragaria vesca subsp. bracteata (A.Heller) Staudt. Specifically, we sequenced one chloroplast (rpoC2) and two...
Gynodioecy, the coexistence of females and hermaphrodites, occurs in 20% of angiosperm families and often enables transitions between hermaphroditism and dioecy. Clarifying mechanisms of sex determination in gynodioecious species can thus illuminate sexual system evolution. Genetic determination of gynodioecy, however, can be complex and is not fully characterized in any...
Whole-genome duplications are radical evolutionary events that have driven speciation and adaptation in many taxa. Higher-order
polyploids have complex histories often including interspecific hybridization and dynamic genomic changes. This chromosomal
reshuffling is poorly understood for most polyploid species, despite their evolutionary and agricultural importance, due to the
challenge of distinguishing...
The cultivated strawberry, Fragaria Xananassa, is one of the youngest domesticated plants. Its 18th century origin via hybridization in Europe between the North American F. virginiana and the South American F. chiloensis was documented by the botanist Antoine Nicolas Duchesne. His 1766 “Natural History of Strawberries” is an extraordinary work...
Gynodioecy is a sexual system wherein females coexist with hermaphrodites. It is of interest
not only because male-sterile plants are advantageous in plant breeding but also because it can be a crucial
step in the evolutionary transition to entirely separate sexes (dioecy) from a hermaphroditic ancestor. The
gynodioecious diploid wild...
