Evolutionary relationships within the lamioid tribe Synandreae (Lamiaceae) based on multiple low-copy nuclear loci

Roy, Tilottama; Catlin, Nathan S.; Garner, Drake M.G.; Scheen, Anne‐Cathrine; Lindqvist, Charlotte

doi:10.7717/peerj.2220

Cited by 4 publications

(4 citation statements)

References 84 publications

(153 reference statements)

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“…Previous studies involving cpDNA, nrDNA, and low-copy nuclear markers failed to adequately discern the position of Synandreae within Lamioideae [ 52 , 53 , 69 , 163 , 164 ]. Our results provide strong support for the placement of Synandreae, with the caveat that only one representative was included (Fig.…”

Section: Discussionmentioning

confidence: 99%

An updated tribal classification of Lamiaceae based on plastome phylogenomics

et al. 2021

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Background A robust molecular phylogeny is fundamental for developing a stable classification and providing a solid framework to understand patterns of diversification, historical biogeography, and character evolution. As the sixth largest angiosperm family, Lamiaceae, or the mint family, consitutes a major source of aromatic oil, wood, ornamentals, and culinary and medicinal herbs, making it an exceptionally important group ecologically, ethnobotanically, and floristically. The lack of a reliable phylogenetic framework for this family has thus far hindered broad-scale biogeographic studies and our comprehension of diversification. Although significant progress has been made towards clarifying Lamiaceae relationships during the past three decades, the resolution of a phylogenetic backbone at the tribal level has remained one of the greatest challenges due to limited availability of genetic data. Results We performed phylogenetic analyses of Lamiaceae to infer relationships at the tribal level using 79 protein-coding plastid genes from 175 accessions representing 170 taxa, 79 genera, and all 12 subfamilies. Both maximum likelihood and Bayesian analyses yielded a more robust phylogenetic hypothesis relative to previous studies and supported the monophyly of all 12 subfamilies, and a classification for 22 tribes, three of which are newly recognized in this study. As a consequence, we propose an updated phylogenetically informed tribal classification for Lamiaceae that is supplemented with a detailed summary of taxonomic history, generic and species diversity, morphology, synapomorphies, and distribution for each subfamily and tribe. Conclusions Increased taxon sampling conjoined with phylogenetic analyses based on plastome sequences has provided robust support at both deep and shallow nodes and offers new insights into the phylogenetic relationships among tribes and subfamilies of Lamiaceae. This robust phylogenetic backbone of Lamiaceae will serve as a framework for future studies on mint classification, biogeography, character evolution, and diversification. Graphical abstract

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Section: Discussionmentioning

confidence: 99%

An updated tribal classification of Lamiaceae based on plastome phylogenomics

et al. 2021

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“…Five chloroplast DNA markers— matK , ndhF , rbcL , rps16 , and trnL-F —were employed in this study because (1) they have been widely used in phylogenetic reconstructions of Lamiaceae at generic, tribal or subfamilial level, and (2) many species of Lamiaceae have already been sequenced for these markers in previous molecular studies 9 10 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 101 . No comparable source of data exists for any nuclear DNA region for a broad sample of Lamiaceae.…”

Section: Methodsmentioning

confidence: 99%

“… 29 ; Roy et al . 33 ; Leucadeae—Scheen and Albert 100 ; Phlomideae—Pan et al . 52 ; Mathiesen et al .…”

Section: Taxonomy and Nomenclaturementioning

confidence: 99%

“…The monophyly of five of the seven subfamilies (Ajugoideae, Lamioideae, Nepetoideae, Prostantheroideae, and Scutellarioideae) has been supported by molecular studies 20 21 22 23 24 25 26 . Within subfamilies, intergeneric relationships have been illuminated to varying degrees in Ajugoideae 22 27 , Lamioideae 21 23 25 26 28 29 30 31 32 33 , Nepetoideae 34 35 36 37 38 39 40 41 42 43 , Prostantheroideae 44 45 46 , and Scutellarioideae 24 , and tribal subdivisions in Lamioideae have been proposed and updated 21 23 26 . However, the monophyly of two subfamilies, Symphorematoideae and Viticoideae, still has not been satisfactorily examined.…”

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A large-scale chloroplast phylogeny of the Lamiaceae sheds new light on its subfamilial classification

Cantino

Olmstead

et al. 2016

Sci Rep

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Lamiaceae, the sixth largest angiosperm family, contains more than 7000 species distributed all over the world. However, although considerable progress has been made in the last two decades, its phylogenetic backbone has never been well resolved. In the present study, a large-scale phylogenetic reconstruction of Lamiaceae using chloroplast sequences was carried out with the most comprehensive sampling of the family to date (288 species in 191 genera, representing approximately 78% of the genera of Lamiaceae). Twelve strongly supported primary clades were inferred, which form the phylogenetic backbone of Lamiaceae. Six of the primary clades correspond to the current recognized subfamilies Ajugoideae, Lamioideae, Nepetoideae, Prostantheroideae, Scutellarioideae, and Symphorematoideae, and one corresponds to a portion of Viticoideae. The other five clades comprise: 1) Acrymia and Cymaria; 2) Hymenopyramis, Petraeovitex, Peronema, and Garrettia; 3) Premna, Gmelina, and Cornutia; 4) Callicarpa; and 5) Tectona. Based on these results, three new subfamilies—Cymarioideae, Peronematoideae, and Premnoideae—are described, and the compositions of other subfamilies are updated based on new findings from the last decade. Furthermore, our analyses revealed five strongly supported, more inclusive clades that contain subfamilies, and we give them phylogenetically defined, unranked names: Cymalamiina, Scutelamiina, Perolamiina, Viticisymphorina, and Calliprostantherina.

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A timeframe for mint evolution: towards a better understanding of trait evolution and historical biogeography in Lamiaceae

Rose

Chen

Sytsma

et al. 2022

Botanical Journal of the Linnean Society

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Lamiaceae are one of the largest and most economically important families of flowering plants. Despite focused study on relationships within subclades, higher-level relationships have been under-studied. Moreover, the herbaceous habit of much of the family has resulted in a poor fossil record and has hampered estimates of divergence times. Using a new dataset of five plastid loci from 178 members of Lamiaceae representing all subfamilies and nearly all tribes, we clarify major infrafamilial relationships and present a robust set of divergence times. We use this phylogenetic hypothesis as a platform to test previous hypotheses regarding the historical biogeography and evolution of major traits in the family. We confirm the placement of subfamily Nepetoideae, show continued uncertainty in the placement of subfamilies Ajugoideae and Premnoideae and highlight extreme discordance with recent results from nuclear data. Lamiaceae originated during the Late Cretaceous as woody plants with nutlet fruits and four stamens, probably in South-East Asia. Most subfamilies diverged during the Eocene, perhaps facilitated by climatic cooling. Our results provide a valuable set of secondary dates for Lamiaceae and highlight the need for focused study of subfamilies Callicarpoideae and Viticoideae. Our results also provide several hypotheses regarding trait or range-dependent diversification.

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Evolutionary relationships within the lamioid tribe Synandreae (Lamiaceae) based on multiple low-copy nuclear loci

Cited by 4 publications

References 84 publications

An updated tribal classification of Lamiaceae based on plastome phylogenomics

An updated tribal classification of Lamiaceae based on plastome phylogenomics

A large-scale chloroplast phylogeny of the Lamiaceae sheds new light on its subfamilial classification

A timeframe for mint evolution: towards a better understanding of trait evolution and historical biogeography in Lamiaceae

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