Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico
Background and Aims: The state of Tabasco has lost more than 95% of its original vegetation cover. Currently, this trend shows no sign of reversing. The Agua Blanca State Park (PEAB) is gravely affected by anthropogenic activities, such as agriculture and extensive livestock farming. The objective o...
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Format: | Online |
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Instituto de Ecología, A.C.
2018
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Online pristup: | https://abm.ojs.inecol.mx/index.php/abm/article/view/1269 |
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author | Sánchez Hernández, Litzajaya Arias Mota, Rosa María Rosique Gil, José Edmundo Pacheco Figueroa, Coral Jazvel |
author_facet | Sánchez Hernández, Litzajaya Arias Mota, Rosa María Rosique Gil, José Edmundo Pacheco Figueroa, Coral Jazvel |
author_sort | Sánchez Hernández, Litzajaya |
collection | ABM |
description | Background and Aims: The state of Tabasco has lost more than 95% of its original vegetation cover. Currently, this trend shows no sign of reversing. The Agua Blanca State Park (PEAB) is gravely affected by anthropogenic activities, such as agriculture and extensive livestock farming. The objective of this study was to evaluate the diversity and dominance of species of the genus Trichoderma within the ABSP in sites with different degrees of disturbance. The genus Trichoderma is a fungi of division Ascomycota and the family Hypocraceae.Methods: Trichoderma colonies were extracted from three sites (conserved, semiconserved and disturbed) using the soil particle-washing technique. For the taxonomic identification of the isolated species, microcultures and semipermanent slides were prepared. The slides were viewed under a compound microscope. Fungal identifications were made with the aid of specific taxonomic keys.Key results: Two hundred and nine colonies belonging to 13 species of the Trichoderma genus were isolated; four of these species represent the first records for the state of Tabasco. The diversity index was significantly higher in the disturbed plot. The high values of abundance and diversity in the plot with the greatest degree of disturbance were significantly related with the soil carbon content. The semiconserved and disturbed plots were characterized by the dominance of more than two species and presented the greatest number of rare species. The dominant species during the sampling were Trichoderma piluliferum, T. koningii and T. virens and T. aureviride, T. atroviride and T. asperellum.Conclusions: The ABSP contains a high diversity of species of the genus Trichoderma. According to the results obtained for this area, agricultural activity did not significantly influence diversity or the number of Trichoderma colonies; however, these disturbances showed an effect on species dominance. |
format | Online |
id | oai:oai.abm.ojs.inecol.mx:article-1269 |
institution | Acta Botanica Mexicana |
language | spa |
publishDate | 2018 |
publisher | Instituto de Ecología, A.C. |
record_format | ojs |
spelling | oai:oai.abm.ojs.inecol.mx:article-12692022-11-17T22:48:45Z Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico Diversidad del género Trichoderma (Hypocraceae) en un Área Natural Protegida en Tabasco, México Sánchez Hernández, Litzajaya Arias Mota, Rosa María Rosique Gil, José Edmundo Pacheco Figueroa, Coral Jazvel conidial fungi evergreen forest perturbation richness hongos conidiales perturbación riqueza selva alta perennifolia Background and Aims: The state of Tabasco has lost more than 95% of its original vegetation cover. Currently, this trend shows no sign of reversing. The Agua Blanca State Park (PEAB) is gravely affected by anthropogenic activities, such as agriculture and extensive livestock farming. The objective of this study was to evaluate the diversity and dominance of species of the genus Trichoderma within the ABSP in sites with different degrees of disturbance. The genus Trichoderma is a fungi of division Ascomycota and the family Hypocraceae.Methods: Trichoderma colonies were extracted from three sites (conserved, semiconserved and disturbed) using the soil particle-washing technique. For the taxonomic identification of the isolated species, microcultures and semipermanent slides were prepared. The slides were viewed under a compound microscope. Fungal identifications were made with the aid of specific taxonomic keys.Key results: Two hundred and nine colonies belonging to 13 species of the Trichoderma genus were isolated; four of these species represent the first records for the state of Tabasco. The diversity index was significantly higher in the disturbed plot. The high values of abundance and diversity in the plot with the greatest degree of disturbance were significantly related with the soil carbon content. The semiconserved and disturbed plots were characterized by the dominance of more than two species and presented the greatest number of rare species. The dominant species during the sampling were Trichoderma piluliferum, T. koningii and T. virens and T. aureviride, T. atroviride and T. asperellum.Conclusions: The ABSP contains a high diversity of species of the genus Trichoderma. According to the results obtained for this area, agricultural activity did not significantly influence diversity or the number of Trichoderma colonies; however, these disturbances showed an effect on species dominance. Antecedentes y Objetivos: El estado de Tabasco ha perdido más de 95% de la cobertura vegetal original, tendencia que continúa en la actualidad. El Parque Estatal Agua Blanca (PEAB), declarado Área Natural Protegida (ANP), se encuentra seriamente afectado por actividades antropogénicas como la actividad agrícola y ganadería extensiva. El objetivo del estudio fue evaluar la diversidad y la dominancia de especies del género Trichoderma dentro del PEAB en sitios con diferente grado de perturbación. El género Trichoderma es un hongo de la división Ascomycota y familia Hypocraceae.Métodos: Las colonias de Trichoderma fueron extraídas de tres parcelas (conservada, semiconservada y perturbada) mediante la técnica de lavado de partículas de suelo. Para la ubicación taxonómica de las especies aisladas, se realizaron microcultivos y preparaciones semipermanentes. Las preparaciones se revisaron bajo el microscopio compuesto y la identificación se realizó con la ayuda de claves taxonómicas.Resultados clave: Se aislaron 209 colonias, ubicadas dentro de 13 integrantes del género Trichoderma; cuatro de ellas representan el primer registro para Tabasco. El índice de diversidad fue significativamente mayor en la parcela perturbada. Los valores altos de la abundancia y de diversidad en el sitio con mayor grado de perturbación se relacionaron de manera significativa con el contenido de carbono. En los sitios semiconservado y perturbado la dominancia estuvo representada por más de dos especies y presentaron el mayor número de especies raras. Las dominantes durante el muestreo fueron Trichoderma piluliferum, T. koningii y T. virens y T. aureviride, T. atroviride y T. asperellum.Conclusiones: El PEAB alberga una alta diversidad del género Trichoderma. De acuerdo con los resultados obtenidos para esta zona, se puede inferir que la actividad agrícola no influye significativamente sobre la diversidad y el número de colonias de Trichoderma; sin embargo, dichas perturbaciones mostraron un efecto sobre la dominancia de las especies. Instituto de Ecología, A.C. 2018-02-06 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion artículo evaluado por pares application/pdf text/html application/xml https://abm.ojs.inecol.mx/index.php/abm/article/view/1269 10.21829/abm123.2018.1269 Acta Botanica Mexicana; No. 123 (2018); 167-182 Acta Botanica Mexicana; Núm. 123 (2018); 167-182 2448-7589 0187-7151 spa https://abm.ojs.inecol.mx/index.php/abm/article/view/1269/pdf https://abm.ojs.inecol.mx/index.php/abm/article/view/1269/html https://abm.ojs.inecol.mx/index.php/abm/article/view/1269/1549 Derechos de autor 2018 Acta Botanica Mexicana https://creativecommons.org/licenses/by-nc/4.0 |
spellingShingle | Sánchez Hernández, Litzajaya Arias Mota, Rosa María Rosique Gil, José Edmundo Pacheco Figueroa, Coral Jazvel Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico |
title | Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico |
title_full | Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico |
title_fullStr | Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico |
title_full_unstemmed | Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico |
title_short | Diversity of the genus Trichoderma (Hypocraceae) in a Natural Protected Area in Tabasco, Mexico |
title_sort | diversity of the genus trichoderma (hypocraceae) in a natural protected area in tabasco, mexico |
url | https://abm.ojs.inecol.mx/index.php/abm/article/view/1269 |
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