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Updated: Jan 10, 2026

Novel Sequence Discovery by Subtractive Genomics
Published on: January 25, 2019
The complete chloroplast genome sequence and phylogenetic analysis of Viola grayi (Violaceae)
Ah-Reum Go1, Yayoi Takahashi2, Takaya Iwasaki2
1Department of Biological Sciences, Kangwon National University, Chuncheon, South Korea.
Abstract:
Viola grayi, a caulescent species in subsection Rostratae, adapted to coastal dunes, with leathery leaves, is here reported with its first sequenced complete chloroplast genome (158,408 bp), comprising a large single-copy (86,662 bp), a small single-copy (17,994 bp), and pair of inverted repeats (26,876 bp each). Phylogenetic analysis of 22 Viola species, based on a 184,817 bp whole-plastome alignment, resolved the genus as monophyletic and placed V. grayi in a clade with V. grypoceras (BP = 100). This plastome provides a valuable genomic resource for future comparative, taxonomic, phylogenetic, and evolutionary studies.
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