Description

Fragaria chiloensis, the beach strawberry, Chilean strawberry, or coastal strawberry, is one of two species of wild strawberry that were hybridized to create the modern garden strawberry (F. × ananassa). It is native to the Pacific Ocean coasts of North and South America.

It is an evergreen plant growing to 15–30 centimetres (6–12 inches) tall. The relatively thick leaves are glossy green and trifoliate, each leaflet around 5 cm (2 in) long. The stems are covered with long hairs and the leaves sometimes have a dense fringe of hairs. The flowers are white, produced in spring and early summer. The fruit, a strawberry, is edible, red on the surface and white inside.

All strawberries have a base haploid count of 7 chromosomes. F. chiloensis is octoploid, having eight sets of these chromosomes for a total of 56. These eight genomes pair as four distinct sets, of two different types, with little or no pairing between sets. The genome composition of the octoploid strawberry species has generally been indicated as AAA'A'BBB'B'. The A-type genomes were likely contributed by diploid ancestors related to F. vesca or similar species, while the B-type genomes seem to descend from a close relative of F. iinumae. The exact process of hybridization and speciation which resulted in the octoploid species is still unknown, but it appears that the genome compositions of both F. chiloensis and F. virginiana (and by extension the cultivated octoploid strawberry as well) are identical.

Whole Genomes

Whole Genome Sequences & Annotations for Fragaria chiloensis

• Fragaria chiloensis Genome v1.0
• Fragaria chiloensis KIB CAS Genome v1.0

S genes

Fragaria S genes Nucleotide

• Fragaria viridis cultivar 42 Sa-RNase mRNA, complete cds
• Fragaria viridis cultivar 42 Sb-RNase mRNA, complete cds
• Fragaria nipponica S-RNase mRNA, complete cds

Fragaria S genes Protein

• Fragaria viridis cultivar 42 Sa-RNase protein
• Fragaria viridis cultivar 42 Sb-RNase protein
• Fragaria nipponica S-RNase protein
• Fragaria nipponica S-RNase2 protein
• Fragaria nipponica S-RNase3 protein

Downloads

The Fragaria S gene sequences are available in FASTA format.

CDS and Protein (FASTA file)

S-gene_Fragaria

Publications

Cauret CMS, Mortimer SME, Roberti MC, Ashman TL, Liston A. Chromosome-scale assembly with a phased sex-determining region resolves features of early Z and W chromosome differentiation in a wild octoploid strawberry. G3 (Bethesda). 2022 Jul 29;12(8):jkac139. doi: 10.1093/g3journal/jkac139.

Jin X, Du H, Zhu C, Wan H, Liu F, Ruan J, Mower JP, Zhu A. Haplotype-resolved genomes of wild octoploid progenitors illuminate genomic diversifications from wild relatives to cultivated strawberry. Nat Plants. 2023 Aug;9(8):1252-1266. doi: 10.1038/s41477-023-01473-2.