Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae)
An accurate taxa delimitation, based on a full understanding of evolutionary processes involved in taxa differentiation, can be gained from a combination of ecological, morphological, and molecular approaches. The taxonomy of Magnolia subsect. Talauma in Cuba has long been debated and exclusively ba...
| Main Authors: | , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Pensoft Publishers
2022-11-01
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| Series: | PhytoKeys |
| Online Access: | https://phytokeys.pensoft.net/article/82627/download/pdf/ |
| _version_ | 1798018511238332416 |
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| author | Ernesto Testé Majela Hernández-Rodríguez Emily Veltjen Eldis R. Bécquer Arlet Rodríguez-Meno Alejandro Palmarola Marie-Stephanie Samain Luis R. González-Torres Thierry Robert |
| author_facet | Ernesto Testé Majela Hernández-Rodríguez Emily Veltjen Eldis R. Bécquer Arlet Rodríguez-Meno Alejandro Palmarola Marie-Stephanie Samain Luis R. González-Torres Thierry Robert |
| author_sort | Ernesto Testé |
| collection | DOAJ |
| description | An accurate taxa delimitation, based on a full understanding of evolutionary processes involved in taxa differentiation, can be gained from a combination of ecological, morphological, and molecular approaches. The taxonomy of Magnolia subsect. Talauma in Cuba has long been debated and exclusively based on traditional morphological study of a limited number of individuals. A more accurate description of leaf morphology variation using geometric morphometrics combined with genetic data could bring consistency to taxa delimitation in this group. Leaf samples for the morphological (243) and genetic (461) analyses were collected throughout the entire distribution range. The variability of each taxon was analyzed through multivariate and geometric morphometry, and 21 genetic markers (SSR). The observed leaf morphological variability was higher than previously described. Morphological and genetic classifications were highly congruent in two out of four taxa. Our data brought evidence that Magnolia orbiculata can be considered a true species with very clear genetic and morphological limits. The main taxonomic issues concern the north-eastern Cuban populations of Magnolia subsect. Talauma. The data supported the existence of two clear groups: corresponding mainly to M. minor-M. oblongifolia and T. ophiticola. However, these two groups cannot be considered fully delimited since genetic markers provided evidence of genetic admixture between them. Due to the likely absence of, at least strong, reproductive barriers between these three taxa, we propose therefore to consider them as a species complex. |
| first_indexed | 2024-04-11T16:25:17Z |
| format | Article |
| id | doaj.art-216cbc2773804f99946c8655493d1121 |
| institution | Directory Open Access Journal |
| issn | 1314-2003 |
| language | English |
| last_indexed | 2024-04-11T16:25:17Z |
| publishDate | 2022-11-01 |
| publisher | Pensoft Publishers |
| record_format | Article |
| series | PhytoKeys |
| spelling | doaj.art-216cbc2773804f99946c8655493d11212022-12-22T04:14:12ZengPensoft PublishersPhytoKeys1314-20032022-11-01213356610.3897/phytokeys.213.8262782627Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae)Ernesto Testé0Majela Hernández-Rodríguez1Emily Veltjen2Eldis R. Bécquer3Arlet Rodríguez-Meno4Alejandro Palmarola5Marie-Stephanie Samain6Luis R. González-Torres7Thierry Robert8Université Paris-SaclayUniversidad de La HabanaGhent UniversityUniversidad de La HabanaUniversidad de La HabanaUniversidad de La HabanaGhent UniversityDouglas CollegeSorbonne UniversitéAn accurate taxa delimitation, based on a full understanding of evolutionary processes involved in taxa differentiation, can be gained from a combination of ecological, morphological, and molecular approaches. The taxonomy of Magnolia subsect. Talauma in Cuba has long been debated and exclusively based on traditional morphological study of a limited number of individuals. A more accurate description of leaf morphology variation using geometric morphometrics combined with genetic data could bring consistency to taxa delimitation in this group. Leaf samples for the morphological (243) and genetic (461) analyses were collected throughout the entire distribution range. The variability of each taxon was analyzed through multivariate and geometric morphometry, and 21 genetic markers (SSR). The observed leaf morphological variability was higher than previously described. Morphological and genetic classifications were highly congruent in two out of four taxa. Our data brought evidence that Magnolia orbiculata can be considered a true species with very clear genetic and morphological limits. The main taxonomic issues concern the north-eastern Cuban populations of Magnolia subsect. Talauma. The data supported the existence of two clear groups: corresponding mainly to M. minor-M. oblongifolia and T. ophiticola. However, these two groups cannot be considered fully delimited since genetic markers provided evidence of genetic admixture between them. Due to the likely absence of, at least strong, reproductive barriers between these three taxa, we propose therefore to consider them as a species complex.https://phytokeys.pensoft.net/article/82627/download/pdf/ |
| spellingShingle | Ernesto Testé Majela Hernández-Rodríguez Emily Veltjen Eldis R. Bécquer Arlet Rodríguez-Meno Alejandro Palmarola Marie-Stephanie Samain Luis R. González-Torres Thierry Robert Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae) PhytoKeys |
| title | Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae) |
| title_full | Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae) |
| title_fullStr | Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae) |
| title_full_unstemmed | Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae) |
| title_short | Integrating morphological and genetic limits in the taxonomic delimitation of the Cuban taxa of Magnolia subsect. Talauma (Magnoliaceae) |
| title_sort | integrating morphological and genetic limits in the taxonomic delimitation of the cuban taxa of magnolia subsect talauma magnoliaceae |
| url | https://phytokeys.pensoft.net/article/82627/download/pdf/ |
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