Molecular phylogenetics and biogeography of the mint tribe Elsholtzieae (Nepetoideae, Lamiaceae), with an emphasis on its diversification in East Asia

Scientific Reports
Pan LiYing-Xiong Qiu

Abstract

Elsholtzia and its allied genera such as Collinsonia and Perilla (tribe Elsholtzieae, Lamiaceae) are an ecologically and economically important plant group consisting of ~71 species, with most species distributed in East and Southeast Asia, and several species in North America. Their phylogeny and historical biogeography resulting in a distant intercontinental disjunction are poorly understood. Here we use two nuclear (ETS, ITS) and five chloroplast (rbcL, matK, trnL-F, ycf1, ycf1-rps15) fragments to reconstruct the phylogeny, biogeographic history, and patterns of diversification of Elsholtzieae. The tribe Elsholtzieae is monophyletic and divided into five clades. The woody Elsholtzia species are nested within herbaceous ones and are inferred to have evolved from herbaceous ancestors. Molecular dating shows that the five major clades were established during the Eocene period, but most of the modern diversity did not originate until the Miocene. The divergence between the New World Collinsonia and the Old World Mosla-Keiskea-Perilla clade was dated to the mid-Miocene. Ancestral area reconstructions suggest that the tribe originated in East Asia, and then dispersed to Southeast Asia and North America. Overall, our findings highl...Continue Reading

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Citations

Aug 1, 2020·DNA Research : an International Journal for Rapid Publication of Reports on Genes and Genomes·Nolan BornowskiC Robin Buell
Oct 20, 2018·Frontiers in Plant Science·Alžběta NěmečkováEva Hřibová
May 1, 2021·Plants·Olivier C G HeylenJill K Olofsson

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Methods Mentioned

BETA
PCR

Software Mentioned

beast
CIPRES
treeannotator
HPC2
mrbayes
Multrees
rasp
Geneious
paup
raxml

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