Abstract Detail

Systematics

Lee, Yoonkyung [1], Paton, Alan [2], Olmstead, Richard [3], Kim, Sangtae [1].

A phylogenetic study of the Scutellaria (Lamiaceae) based on chloroplast ccsA, matK, and ndhF regions.

Scutellaria L. is the second largest genus of the Lamiaceae, with approximately 470 recognized species. The current classification system based on the morphological study contains seven sections placed in two subgenera, subgenus Scutellaria and subgenus Apelthanthus. In this classification system, thirty-four morphological species-groups have been suggested in the section Scutellaria, the largest section in the genus (ca. 240 species), without any taxonomic rank. Molecular phylogenetic studies to test the monophyly of each subgroup in the classification system have not yet been performed. In this study, we selected 202 species representing each subgroup of Scutellaria and also representing questionable unplaced taxa, which account for approximately 43 % of the recognized species in Scutellaria. To address phylogeny of Scutellaria, three fast-evolving DNA regions in the chloroplast (ccsA, matK, and ndhF) were selected based on the analysis of the two previously reported chloroplast genome in the genus (S. baicalensis Georgi, S. insignis Nakai). The result showed the first molecular phylogenetic relationship among species of Scutellaria and it will be the basis for a new classification system in the genus.

1 - Sungshin University, Department of Biology, 55, Dobong-ro 76ga-gil, Gangbuk-gu, Seoul, 01133, Republic of Korea
2 - Royal Botanic Gardens, Kew, Herbarium, Library, Art and Archives, Richmond, Surrey, TW9 3AB, UK
3 - University of Washington, Department of Biology, Box 351800, Seattle, WA, 98195, USA

Keywords:
Scutellaria
Lamiaceae
phylogeny
chloroplast
ccsA
matK
ndhF.

Presentation Type: Oral Paper
Session: 30, Systematics II--Euasterids 1
Location: 113/Mayo Civic Center
Date: Tuesday, July 24th, 2018
Time: 2:00 PM
Number: 30003
Abstract ID:263
Candidate for Awards:None