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Hyper-Cryptic radiation of a tropical montane plant lineage


Olivares, Ingrid; Tusso, Sergio; José Sanín, María; de La Harpe, Marylaure; Loiseau, Oriane; Rolland, Jonathan; Salamin, Nicolas; Kessler, Michael; Shimizu, Kentaro K; Paris, Margot (2024). Hyper-Cryptic radiation of a tropical montane plant lineage. Molecular Phylogenetics and Evolution, 190:107954.

Abstract

Species are seen as the fundamental unit of biotic diversity, and thus their delimitation is crucial for defining measures for diversity assessments and studying evolution. Differences between species have traditionally been associated with variation in morphology. And yet, the discovery of cryptic diversity suggests that the evolution of distinct lineages does not necessarily involve morphological differences. Here, we analyze 1,684,987 variant sites and over 4,000 genes for more than 400 samples to show how a tropical montane plant lineage (Geonoma undata species complex) is composed of numerous unrecognized genetic groups that are not morphologically distinct. We find that 11 to 14 clades do not correspond to the three currently recognized species. Most clades are genetically different and geographic distance and topography are the most important factors determining this genetic divergence. The genetic structure of this lineage does not match its morphological variation. Instead, this species complex constitutes the first example of a hyper-cryptic plant radiation in tropical mountains.

Abstract

Species are seen as the fundamental unit of biotic diversity, and thus their delimitation is crucial for defining measures for diversity assessments and studying evolution. Differences between species have traditionally been associated with variation in morphology. And yet, the discovery of cryptic diversity suggests that the evolution of distinct lineages does not necessarily involve morphological differences. Here, we analyze 1,684,987 variant sites and over 4,000 genes for more than 400 samples to show how a tropical montane plant lineage (Geonoma undata species complex) is composed of numerous unrecognized genetic groups that are not morphologically distinct. We find that 11 to 14 clades do not correspond to the three currently recognized species. Most clades are genetically different and geographic distance and topography are the most important factors determining this genetic divergence. The genetic structure of this lineage does not match its morphological variation. Instead, this species complex constitutes the first example of a hyper-cryptic plant radiation in tropical mountains.

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Item Type:Journal Article, refereed, original work
Communities & Collections:07 Faculty of Science > Department of Systematic and Evolutionary Botany
07 Faculty of Science > Institute of Evolutionary Biology and Environmental Studies
07 Faculty of Science > Zurich-Basel Plant Science Center
Dewey Decimal Classification:570 Life sciences; biology
590 Animals (Zoology)
Scopus Subject Areas:Life Sciences > Ecology, Evolution, Behavior and Systematics
Life Sciences > Molecular Biology
Life Sciences > Genetics
Uncontrolled Keywords:Genetics, Molecular Biology, Ecology, Evolution, Behavior and Systematics
Language:English
Date:1 January 2024
Deposited On:20 Dec 2023 12:44
Last Modified:29 Jun 2024 01:41
Publisher:Elsevier
ISSN:1055-7903
OA Status:Closed
Publisher DOI:https://doi.org/10.1016/j.ympev.2023.107954
PubMed ID:37898295
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