Journal article
Monnina (Polygalaceae), a New World monophyletic genus full of contrasts
Botanical journal of the Linnean Society, v 203(3), pp 227-252
01 Nov 2023
Featured in Collection : UN Sustainable Development Goals @ Drexel
Abstract
Endemic to the Neotropics, Monnina is the second largest genus of Polygalaceae, yet little is known about its phylogenetic history, biogeography, and morphological character evolution. To address these knowledge gaps, we conducted Bayesian and maximum likelihood (ML) analyses of nuclear ITS and plastid trnL-F regions to test the monophyly of Monnina s.l. We used this phylogenetic framework to (i) infer divergence time estimates of lineages within the genus and reconstruct their historical biogeography; (ii) reconstruct the evolution of morphological characters of putative ecological and evolutionary importance in Monnina; and (iii) test for correlations between our phylogenetic hypothesis and environmental data. Our results reveal that Monnina is monophyletic with an indehiscent, 1-2-seeded fruit as a synapomorphy for the genus. We identify six clades within Monnina based on our combined phylogenetic results: Clades A, B, and D are primarily distributed in southern and eastern South America, Clades C and E are primarily Central Andean, and Clade F is chiefly distributed in the Northern Andes and Central America. The ancestor of the Monnina stem lineage dispersed from Australia/Africa to South America during the late Eocene to early Oligocene. The divergences of major lineages within the genus began in the early Miocene. We inferred the most recent common ancestor of Monnina to be an herbaceous plant with one-seeded samaroid fruits. The origins of fleshy fruits and shrubby habits are phylogenetically correlated within Monnina, and their concerted convergent evolution may have promoted increased net diversification rates in the two most species-rich subclades of the genus.
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Details
- Title
- Monnina (Polygalaceae), a New World monophyletic genus full of contrasts
- Creators
- Alina Freire-Fierro (Corresponding Author) - Universidad Técnica de CotopaxiFelix Forest - Royal Botanic Gardens, KewDion S. Devey - Royal Botanic Gardens, KewJose Floriano Barea Pastore - Universidade Federal de Santa CatarinaJames W. Horn - Florida Gulf Coast UniversityXue-Jun Ge - South China Botanical GardenZhengyang Wang - Harvard Univ, Museum Comparat Zool, Cambridge, MA USATian-Wen Xiao - South China Botanical GardenWalter F. Bien - Drexel University, Biodiversity, Earth, and Environmental Science (BEES)
- Publication Details
- Botanical journal of the Linnean Society, v 203(3), pp 227-252
- Publisher
- Oxford University Press
- Number of pages
- 26
- Grant note
- American Society for Plant Taxonomy Academy of Natural Sciences of Drexel University Drexel University's Laboratory of Pinelands Research, Betz Chair of Environmental Science 151853KYSB20190027 / PIFI -the International Partnership Program of the Chinese Academy of Sciences Bentham-Moxon Trust (Kew Gardens) International Association for Plant Taxonomy Russell Laboratory 2022VBB0001 / CAS President's International Fellowship Initiative
- Resource Type
- Journal article
- Language
- English
- Academic Unit
- Biodiversity, Earth, and Environmental Science (BEES)
- Web of Science ID
- WOS:001049681400001
- Scopus ID
- 2-s2.0-85191757369
- Other Identifier
- 991021861205404721
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- Collaboration types
- Domestic collaboration
- International collaboration
- Web of Science research areas
- Plant Sciences