Systematic Placement of the Enigmatic Southeast Asian Genus Paralamium and an Updated Phylogeny of Tribe Pogostemoneae (Lamiaceae Subfamily Lamioideae)

Fei Zhao; Yi-Wen Wu; Bryan T. Drew; Gang Yao; Ya-Ping Chen; Jie Cai; En-De Liu; Bo Li; Chun-Lei Xiang

doi:10.3389/fpls.2021.646133

Frontiers in Plant Science (Apr 2021)

Systematic Placement of the Enigmatic Southeast Asian Genus Paralamium and an Updated Phylogeny of Tribe Pogostemoneae (Lamiaceae Subfamily Lamioideae)

Fei Zhao,
Yi-Wen Wu,
Bryan T. Drew,
Gang Yao,
Ya-Ping Chen,
Jie Cai,
En-De Liu,
Bo Li,
Chun-Lei Xiang

Affiliations

Fei Zhao: CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
Yi-Wen Wu: College of Life Sciences, Shaanxi Normal University, Xi’an, China
Bryan T. Drew: Department of Biology, University of Nebraska at Kearney, Kearney, NE, United States
Gang Yao: South China Limestone Plants Center, College of Forestry and Landscape Architecture, South China Agricultural University, Guangzhou, China
Ya-Ping Chen: CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
Jie Cai: Germplasm Bank of Wild Species in Southwest China, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
En-De Liu: CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China
Bo Li: Research Centre of Ecological Sciences, College of Agronomy, Jiangxi Agricultural University, Nanchang, China
Chun-Lei Xiang: CAS Key Laboratory for Plant Diversity and Biogeography of East Asia, Kunming Institute of Botany, Chinese Academy of Sciences, Kunming, China

DOI: https://doi.org/10.3389/fpls.2021.646133
Journal volume & issue: Vol. 12

Abstract

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Paralamium (Lamiaceae) is a monotypic genus within the subfamily Lamioideae and has a sporadic distribution in subtropical mountains of southeast Asia. Although recent studies have greatly improved our understanding of generic relationships within Lamioideae, the second most species-rich subfamily of Lamiaceae, the systematic position of Paralamium within the subfamily remains unclear. In this study, we investigate the phylogenetic placement of the genus using three datasets: (1) a 69,276 bp plastome alignment of Lamiaceae; (2) a five chloroplast DNA region dataset of tribe Pogostemoneae, and (3) a nuclear ribosomal internal transcribed spacer region dataset of Pogostemoneae. These analyses demonstrate that Paralamium is a member of Pogostemoneae and sister to the monotypic genus Craniotome. In addition, generic-level phylogenetic relationships within Pogostemoneae are also discussed, and a dichotomous key for genera within Pogostemoneae is provided.

Published in Frontiers in Plant Science

ISSN: 1664-462X (Online)
Publisher: Frontiers Media S.A.
Country of publisher: Switzerland
LCC subjects: Agriculture: Plant culture
Website: https://www.frontiersin.org/journals/plant-science

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