An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae)
Background and Aims: The species recorded in Mexico (state of Veracruz) in the 1980s as “Tricholoma magnivelare” (or under its synonym, T. ponderosum) changed over the years from being a fungus not considered to be edible in this country, to a subject of international commercialization when Asian se...
| Glavni autori: | , , , , |
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| Format: | Online |
| Jezik: | eng spa |
| Izdano: |
Instituto de Ecología, A.C.
2022
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| Online pristup: | https://abm.ojs.inecol.mx/index.php/abm/article/view/2112 |
| _version_ | 1799771422120214528 |
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| author | Bandala, Víctor M. Ramos, Antero César, Enrique Ramos, David Montoya Bello, Leticia |
| author_facet | Bandala, Víctor M. Ramos, Antero César, Enrique Ramos, David Montoya Bello, Leticia |
| author_sort | Bandala, Víctor M. |
| collection | ABM |
| description | Background and Aims: The species recorded in Mexico (state of Veracruz) in the 1980s as “Tricholoma magnivelare” (or under its synonym, T. ponderosum) changed over the years from being a fungus not considered to be edible in this country, to a subject of international commercialization when Asian sellers became aware of its occurrence in Mexico and for its relationship with the group of T. matsutake. The collections supporting these previous records from different regions of the country (and identified under the same name) were studied only morphologically. Based on morphological and molecular information (ITS), T. mesoamericanum was described from Oaxaca state (southern Mexico) (type), while T. colposii was more recently described from Veracruz state, both related to the group of species around T. matsutake. The aim of this study was to determine, with morphological characters and sequences (ITS) obtained from fresh samples, the taxonomic identity of specimens morphologically resembling those species.Methods: Field work was carried out during 2009 and 2018 in two Pinus-forested sites in the states of Puebla and Veracruz (eastern Mexico). Fruit bodies acquired in a popular market in the city of Xalapa, Veracruz, were also studied. Measurements, color and the morpho-anatomical and organoleptic characteristics of the samples were recorded. DNA extraction, PCR, sequencing of the Internal Transcribed Spacer (ITS) region of ribosomal DNA, and a phylogenetic analysis were conducted.Key results: Molecular and morphological studies presented here reveal that Mexican populations of “T. magnivelare” sampled in the states of Veracruz and Puebla are grouped in a clade including T. mesoamericanum and T. colposii type specimens, separate from T. magnivelare s. str. from USA. Conclusions: The identity of the material studied corresponds to T. mesoamericanum, which is consistent with previous studies showing that the “matsutake” mushrooms in the country represent T. mesoamericanum, and as shown here, with T. colposii as a synonym. |
| format | Online |
| id | oai:oai.abm.ojs.inecol.mx:article-2112 |
| institution | Acta Botanica Mexicana |
| language | eng spa |
| publishDate | 2022 |
| publisher | Instituto de Ecología, A.C. |
| record_format | ojs |
| spelling | oai:oai.abm.ojs.inecol.mx:article-21122023-01-12T20:09:15Z An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) Actualización de la circunscripción taxonómica de Tricholoma mesoamericanum que incluye a Tricholoma colposii (Agaricales, Tricholomataceae) Bandala, Víctor M. Ramos, Antero César, Enrique Ramos, David Montoya Bello, Leticia commercial mushrooms ectomycorrhizal fungi diversity matsutake mushrooms wild edible mushrooms hongos comerciales hongos ectomicorrizógenos matsutake hongos comestibles silvestres Background and Aims: The species recorded in Mexico (state of Veracruz) in the 1980s as “Tricholoma magnivelare” (or under its synonym, T. ponderosum) changed over the years from being a fungus not considered to be edible in this country, to a subject of international commercialization when Asian sellers became aware of its occurrence in Mexico and for its relationship with the group of T. matsutake. The collections supporting these previous records from different regions of the country (and identified under the same name) were studied only morphologically. Based on morphological and molecular information (ITS), T. mesoamericanum was described from Oaxaca state (southern Mexico) (type), while T. colposii was more recently described from Veracruz state, both related to the group of species around T. matsutake. The aim of this study was to determine, with morphological characters and sequences (ITS) obtained from fresh samples, the taxonomic identity of specimens morphologically resembling those species.Methods: Field work was carried out during 2009 and 2018 in two Pinus-forested sites in the states of Puebla and Veracruz (eastern Mexico). Fruit bodies acquired in a popular market in the city of Xalapa, Veracruz, were also studied. Measurements, color and the morpho-anatomical and organoleptic characteristics of the samples were recorded. DNA extraction, PCR, sequencing of the Internal Transcribed Spacer (ITS) region of ribosomal DNA, and a phylogenetic analysis were conducted.Key results: Molecular and morphological studies presented here reveal that Mexican populations of “T. magnivelare” sampled in the states of Veracruz and Puebla are grouped in a clade including T. mesoamericanum and T. colposii type specimens, separate from T. magnivelare s. str. from USA. Conclusions: The identity of the material studied corresponds to T. mesoamericanum, which is consistent with previous studies showing that the “matsutake” mushrooms in the country represent T. mesoamericanum, and as shown here, with T. colposii as a synonym. Antecedentes y Objetivos: La especie registrada en México (estado de Veracruz) en la década de 1980 como “Tricholoma magnivelare” (bajo su sinónimo, T. ponderosum) de ser un hongo no utilizado como comestible en el país, pasó a ser objeto de comercialización internacional, cuando vendedores asiáticos conocieron su presencia en México y su relación con el grupo de T. matsutake. Los especímenes en los que se basaron registros previos en el país (identificados con el mismo nombre), fueron estudiados solo morfológicamente. Con base en información morfológica y molecular (ITS), recientemente se describieron a T. mesoamericanum del estado de Oaxaca (sur de Mexico) (tipo), y a T. colposii del estado de Veracruz, ambas relacionadas al grupo de especies alrededor de T. matsutake. El objetivo de este estudio fue determinar, con base en caracteres morfológicos y secuencias de (ITS) obtenidas a partir de muestras frescas, la identidad taxonómica de especímenes con similitudes con ambas especies. Métodos: Durante 2009 y 2018 se recolectaron especímenes en dos bosques de Pinus en los estados de Puebla y Veracruz (este de México). Se estudiaron fructificaciones adquiridas en un mercado popular en Xalapa, Veracruz. Se registraron las características morfo-anatómicas y organolépticas de las muestras. Se efectuó la extracción del ADN, PCR, secuenciación de la región del espaciador transcrito interno (ITS) del ADN ribosomal, y un análisis filogenético.Resultados clave: Estudios moleculares y morfológicos aquí presentados revelan que poblaciones mexicanas de “T. magnivelare” recolectadas en los estados de Veracruz y Puebla se identifican con T. mesoamericanum y el tipo de T. colposii, en un clado independiente de T. magnivelare s. str. de EUA.Conclusiones: El material estudiado se identifica con T. mesoamericanum, consistente con estudios previos que muestran que los hongos del grupo “matsutake” en el país están representados por T. mesoamericanum y, como se demuestra aquí, con T. colposii como un sinónimo. Instituto de Ecología, A.C. 2022-12-05 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/2112 10.21829/abm129.2022.2112 Acta Botanica Mexicana; No. 129 (2022) Acta Botanica Mexicana; Núm. 129 (2022) 2448-7589 0187-7151 eng spa https://abm.ojs.inecol.mx/index.php/abm/article/view/2112/4320 https://abm.ojs.inecol.mx/index.php/abm/article/view/2112/4358 https://abm.ojs.inecol.mx/index.php/abm/article/view/2112/4321 https://creativecommons.org/licenses/by-nc/4.0 |
| spellingShingle | Bandala, Víctor M. Ramos, Antero César, Enrique Ramos, David Montoya Bello, Leticia An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) |
| title | An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) |
| title_full | An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) |
| title_fullStr | An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) |
| title_full_unstemmed | An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) |
| title_short | An updated taxonomic circumscription of Tricholoma mesoamericanum that includes Tricholoma colposii (Agaricales, Tricholomataceae) |
| title_sort | updated taxonomic circumscription of tricholoma mesoamericanum that includes tricholoma colposii (agaricales, tricholomataceae) |
| url | https://abm.ojs.inecol.mx/index.php/abm/article/view/2112 |
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