Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida
Background and Aims: Lysiloma is a Neotropical genus in the Fabaceae family that comprises eight species, six of which are widely distributed in Mexico, and two more that occur in the Antilles and Florida. Lysiloma is frequent in Megamexico’s dry forests. A previous phylogenetic study included three...
| Autors principals: | , , , , , , , |
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| Format: | Online |
| Idioma: | spa |
| Publicat: |
Instituto de Ecología, A.C.
2021
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| Accés en línia: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1782 |
| _version_ | 1799771387466874880 |
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| author | Duno de Stefano, Rodrigo Tun Tun, Christian López Contreras , José Enrique Carnevali Fernández-Concha, Germán Leopardi-Verde, Carlos Luis Ramírez-Prado , Jorge Humberto Can Itza, Lilia Lorena Tamayo Cen, Ivan |
| author_facet | Duno de Stefano, Rodrigo Tun Tun, Christian López Contreras , José Enrique Carnevali Fernández-Concha, Germán Leopardi-Verde, Carlos Luis Ramírez-Prado , Jorge Humberto Can Itza, Lilia Lorena Tamayo Cen, Ivan |
| author_sort | Duno de Stefano, Rodrigo |
| collection | ABM |
| description | Background and Aims: Lysiloma is a Neotropical genus in the Fabaceae family that comprises eight species, six of which are widely distributed in Mexico, and two more that occur in the Antilles and Florida. Lysiloma is frequent in Megamexico’s dry forests. A previous phylogenetic study included three species of Lysiloma and Hesperalbizia occidentalis. Both genera are closely related, but their divergence has weak support. Our objectives were to test the monophyly of the genus, evaluate the sister relationships within the genus, and estimate the divergence times. Methods: A phylogenetic analysis based on morphological characters, molecular markers (ETS, matK, and trnK), as well as a combined analysis (morphology + molecules) was performed. The data matrices were analyzed both individually and concatenated (total evidence approach) with Bayesian inference and Maximum Parsimony. In addition, molecular divergence times were estimated from the ETS dataset with a Bayesian uncorrelated lognormal relaxed clock. Key results: The morphological analysis supports the monophyly of Lysiloma with Hesperalbizia as sister group. However, the individual and the combined molecular analyses do not provide resolution to clarify the relationships between Hesperalbizia occidentalis, Lysiloma sabicu, and core Lysiloma. The total evidence analysis (including morphology) supports the monophyly of Lysiloma, yet with low support. According to our molecular clock model, the clade Lysiloma+Hesperalbizia diverged from other members of the tribe Acacieae+Ingeae about 32 million years ago, and the diversification of the core of Lysiloma occurred during the Miocene. Conclusions: Lysiloma+Hesperalbizia is an early divergent clade of tribes Acacieae+Ingeae. There are enough morphological differences to recognize both linages. Morphological characters informally used for taxonomic delimitation seem to have evolved homoplasiously. The clade Lysiloma and Hesperalbizia separated from other members of the tribe Acacieae+Ingeae in the Oligocene, but the diversification of the core of the genus coincides with the expansion of the dry forest at the beginning of the Miocene. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-1782 |
| institution | Acta Botanica Mexicana |
| language | spa |
| publishDate | 2021 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-17822022-11-17T00:47:31Z Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida Filogenia de Lysiloma (Fabaceae), un género restringido a Megaméxico con especies atípicas en las Antillas y Florida Duno de Stefano, Rodrigo Tun Tun, Christian López Contreras , José Enrique Carnevali Fernández-Concha, Germán Leopardi-Verde, Carlos Luis Ramírez-Prado , Jorge Humberto Can Itza, Lilia Lorena Tamayo Cen, Ivan Acacieae Hesperalbizia Ingeae Leguminosae molecular clock Neotropics Acacieae Hesperalbizia Ingeae Leguminosae Neotrópico. reloj molecular Background and Aims: Lysiloma is a Neotropical genus in the Fabaceae family that comprises eight species, six of which are widely distributed in Mexico, and two more that occur in the Antilles and Florida. Lysiloma is frequent in Megamexico’s dry forests. A previous phylogenetic study included three species of Lysiloma and Hesperalbizia occidentalis. Both genera are closely related, but their divergence has weak support. Our objectives were to test the monophyly of the genus, evaluate the sister relationships within the genus, and estimate the divergence times. Methods: A phylogenetic analysis based on morphological characters, molecular markers (ETS, matK, and trnK), as well as a combined analysis (morphology + molecules) was performed. The data matrices were analyzed both individually and concatenated (total evidence approach) with Bayesian inference and Maximum Parsimony. In addition, molecular divergence times were estimated from the ETS dataset with a Bayesian uncorrelated lognormal relaxed clock. Key results: The morphological analysis supports the monophyly of Lysiloma with Hesperalbizia as sister group. However, the individual and the combined molecular analyses do not provide resolution to clarify the relationships between Hesperalbizia occidentalis, Lysiloma sabicu, and core Lysiloma. The total evidence analysis (including morphology) supports the monophyly of Lysiloma, yet with low support. According to our molecular clock model, the clade Lysiloma+Hesperalbizia diverged from other members of the tribe Acacieae+Ingeae about 32 million years ago, and the diversification of the core of Lysiloma occurred during the Miocene. Conclusions: Lysiloma+Hesperalbizia is an early divergent clade of tribes Acacieae+Ingeae. There are enough morphological differences to recognize both linages. Morphological characters informally used for taxonomic delimitation seem to have evolved homoplasiously. The clade Lysiloma and Hesperalbizia separated from other members of the tribe Acacieae+Ingeae in the Oligocene, but the diversification of the core of the genus coincides with the expansion of the dry forest at the beginning of the Miocene. Antecedentes y Objetivos: Lysiloma es un género neotropical de la familia Fabaceae que comprende ocho especies, seis de las cuales se distribuyen ampliamente en México y dos más que ocurren en las Antillas y La Florida. Lysiloma es frecuente en los bosques secos de Megaméxico. Un estudio filogenético previo incluyó tres especies de Lysiloma y Hesperalbizia occidentalis. Ambos géneros están estrechamente relacionados, pero su divergencia tiene un apoyo débil. Nuestros objetivos fueron probar la monofilia del género, evaluar las relaciones de grupo hermano dentro del género y estimar los tiempos de divergencia. Métodos: Se realizó un análisis filogenético basado en caracteres morfológicos, marcadores moleculares (ETS, matK y trnK), así como un análisis combinado (morfología + moléculas). Las matrices de datos se analizaron tanto individualmente como concatenadas (enfoque de evidencia total) con inferencia Bayesiana y máxima parsimonia. Además, los tiempos de divergencia molecular se estimaron a partir del conjunto de datos ETS con un modelo de reloj bayesiano relajado lognormal no correlacionado. Resultados clave: El análisis morfológico respalda la monofilia del Lysiloma con Hesperalbizia como grupo hermano. Sin embargo, los análisis moleculares individuales y combinado no proporcionan resolución para aclarar las relaciones entre Hesperalbizia occidentalis, Lysiloma sabicu y el núcleo de Lysiloma. El análisis de evidencia total (incluida la morfología) respalda la monofilia de Lysiloma, pero con un bajo soporte. Según nuestro modelo de reloj molecular, el clado Lysiloma+Hesperalbizia se separó de otros miembros de la tribu Acacieae+Ingeae hace unos 32 millones de años y la diversificación del núcleo del Lysiloma se produjo a lo largo del Mioceno.Conclusiones: Lysiloma+Hesperalbizia es un clado de divergencia temprana de las tribus Acacieae+Ingeae. Existen suficientes diferencias morfológicas para reconocer ambos linajes. Los caracteres morfológicos utilizados informalmente para la delimitación taxonómica parecen haber evolucionado de manera homoplásica. El clado de Lysiloma y Hesperalbizia se separó de otros miembros de la tribu Acacieae+Ingeae en el Oligoceno, pero la diversificación del núcleo del género coincidió con la expansión del bosque seco a principios del Mioceno. Instituto de Ecología, A.C. 2021-02-25 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/xml application/epub+zip https://abm.ojs.inecol.mx/index.php/abm/article/view/1782 10.21829/abm128.2021.1782 Acta Botanica Mexicana; No. 128 (2021) Acta Botanica Mexicana; Núm. 128 (2021) 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1782/3754 https://abm.ojs.inecol.mx/index.php/abm/article/view/1782/3779 https://abm.ojs.inecol.mx/index.php/abm/article/view/1782/3755 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Duno de Stefano, Rodrigo Tun Tun, Christian López Contreras , José Enrique Carnevali Fernández-Concha, Germán Leopardi-Verde, Carlos Luis Ramírez-Prado , Jorge Humberto Can Itza, Lilia Lorena Tamayo Cen, Ivan Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida |
| title | Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida |
| title_full | Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida |
| title_fullStr | Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida |
| title_full_unstemmed | Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida |
| title_short | Phylogeny of Lysiloma (Fabaceae), a genus restricted to Megamexico with outliers in the West Indies and Florida |
| title_sort | phylogeny of lysiloma (fabaceae), a genus restricted to megamexico with outliers in the west indies and florida |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1782 |
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