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Abundant incongruence in a clade endemic to a biodiversity hotspot: Phylogenetics of the scrub mint clade (Lamiaceae).
Naranjo, Andre A; Edwards, Christine E; Gitzendanner, Matthew A; Soltis, Douglas E; Soltis, Pamela S.
Afiliación
  • Naranjo AA; Institute of Environment, Department of Biological Sciences, Florida International University, 11200 SW 8th ST, Miami, FL 33199, USA; Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gainesville, FL 32611-7800, USA. Electronic address: anaranjo@fiu.edu.
  • Edwards CE; Missouri Botanical Garden, 4344 Shaw Blvd., St. Louis, MO 63110, USA.
  • Gitzendanner MA; Department of Biology, University of Florida, PO Box 118526, Gainesville, FL 32611-8526, USA.
  • Soltis DE; Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gainesville, FL 32611-7800, USA; Department of Biology, University of Florida, PO Box 118526, Gainesville, FL 32611-8526, USA.
  • Soltis PS; Florida Museum of Natural History, University of Florida, 1659 Museum Road, PO Box 117800, Gainesville, FL 32611-7800, USA.
Mol Phylogenet Evol ; 192: 108014, 2024 Mar.
Article en En | MEDLINE | ID: mdl-38199595
ABSTRACT
The Scrub Mint clade(Lamiaceae) provides a unique system for investigating the evolutionary processes driving diversification in the North American Coastal Plain from both a systematic and biogeographic context. The clade comprisesDicerandra, Conradina, Piloblephis, Stachydeoma, and four species of the broadly defined genus Clinopodium(Mentheae; Lamiaceae), almost all of which are endemic to the North American Eastern Coastal Plain. Most species of this clade are threatened or endangered and restricted to sandhill or a mosaic of scrub habitats. We analyzed relationships in this clade to understand the evolution of the group and identify evolutionary mechanisms acting on the clade, with important implications for conservation. We used a target-capture method to sequence and analyze 238 nuclear loci across all species of scrub mints, reconstructed the phylogeny, and calculated gene tree concordance, gene tree estimation error, and reticulation indices for every node in the tree using ML methods. Phylogenetic networks were used to determine reticulation events. Our nuclear phylogenetic estimates were consistent with previous results, while greatly increasing the robustness of taxon sampling. The phylogeny resolved the full relationship between Dicerandra and Conradina and the less-studied members of the clade (Piloblephis, Stachydeoma, Clinopodium spp.). We found hotspots of gene tree discordance and reticulation throughout the tree, especially in perennial Dicerandra. Several instances of reticulation events were uncovered between annual and perennial Dicerandra, and within the Conradina + allies clade. Incomplete lineage sorting also likely contributed to phylogenetic discordance. These results clarify phylogenetic relationships in the clade and provide insight on important evolutionary drivers in the clade, such as hybridization. General relationships in the group were confirmed, while the large amount of gene tree discordance is likely due to reticulation across the phylogeny.
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Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Lamiaceae / Mentha Idioma: En Revista: Mol Phylogenet Evol Asunto de la revista: BIOLOGIA / BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos
Texto completo
Añadir a Mi BVS
Imprimir
XML
PubMed Links
Buscar en Google

Texto completo: 1 Colección: 01-internacional Base de datos: MEDLINE Asunto principal: Lamiaceae / Mentha Idioma: En Revista: Mol Phylogenet Evol Asunto de la revista: BIOLOGIA / BIOLOGIA MOLECULAR Año: 2024 Tipo del documento: Article Pais de publicación: Estados Unidos