Draft genome sequence of wild Prunus yedoensis reveals massive inter-specific hybridization between sympatric flowering cherries

• DOI: 10.1186/s13059-018-1497-y
• Publication Date: 2018-09-04T11:16:12Z
• Authors: Seunghoon Baek; Kyung Choi; Goon-Bo Kim; Hee-Ju Yu; Ara Cho; Hoyeol Jang; Changkyun Kim; Hyuk-Jin Kim; Kae Sun Chang; Joo-Hwan Kim; Jeong-Hwan Mun
• Keywords: Comparative Genomics

Hybridization is an important evolutionary process that results in increased plant diversity. Flowering Prunus includes popular cherry species are appreciated worldwide for their flowers. The ornamental characteristics were acquired both naturally and through artificially hybridizing with heterozygous genomes. Therefore, the genome of hybrid flowering presents challenges genomics biology.We use long reads to sequence analyze highly wild yedoensis. assembly covers > 93% gene space; annotation identified 41,294 protein-coding genes. Comparative analysis 16 accessions six related taxa shows 41% genes assigned into maternal or paternal state. This indicates P. yedoensis F1 originating from a cross between pendula f. ascendens jamasakura, it can be clearly distinguished its confusing taxon, Yoshino cherry. A focused S-locus haplotypes closely distributed sympatric natural habitat suggests reduced restriction inter-specific hybridization due strong gametophytic self-incompatibility likely promote complex development swarm.We report draft using long-read sequencing phasing. Based on comprehensive comparative taxa, appears cross-species habitats ongoing facilitates diversification Prunus.