Comparative genomics of Viola selkirkii and V. ulleungdoensis (Violaceae)

• Published in: Sigmul bunryu hag-hoeji = Korean journal of plant taxonomy Vol. 53; no. 1; pp. 38 - 46
• Main Authors: Ah-reum Go, Ki-oug Yoo
• Format: Journal Article
• Language: Korean
• Published: 한국식물분류학회 2023
• Subjects: chloroplast genome; phylogenetic analysis; speciation; Viola selkirkii; Viola ulleungdoensis; Violaceae; Viola ulleungdoensis; phylogenetic analysis; Violaceae; Viola selkirkii; chloroplast genome; speciation
• ISSN: 1225-8318

Chloroplast genomes of two morphologically similar species, Viola selkirkii and V. ulleungdoensis, were compared. For this comparison, three individuals of V. selkirkii from Ulleung-do Island (UE), Jeju-do Island (JJ), and Hwacheon-gun (HC) and one of V. ulleungdoensis from UE were collected. According to chloroplast genome sequencing of V. selkirkii and V. ulleungdoensis, their genomes were found to contain 156,774-157,454 and 157,575 bp, respectively, and a total of 111 genes. In the comparison of the three V. selkirkii individuals, V. selkirkii obtained in UE was distinguished from those of the other regions of HC and JJ, and in the comparison of the three V. selkirkii individuals and one V. ulleungdoensis individual, V. selkirkii obtained from UE and V. ulleungdoensis were distinguished from the species in the other regions. In addition, a phylogenetic analysis revealed that 32 taxa of Viola formed a monophyletic group (bootstrap support [BS] = 100). The four Viola individuals used in this study (three V. selkirkii and one V. ulleungdoensis) formed a monophyletic group (BS = 100), which was further divided into two subclades. One subclade comprised V. selkirkii found in UE and V. ulleungdoensis, whereas the other subclade comprised V. selkirkii found in HC and JJ. These results support the view of prior studies that V. selkirkii growing in UE and V. ulleungdoensis are the same species.