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Redalyc.Revisión Del Género Tuber (Tuberaceae: Pezizales) De México

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Redalyc.Revisión Del Género Tuber (Tuberaceae: Pezizales) De México Revista Mexicana de Biodiversidad ISSN: 1870-3453 [email protected] Universidad Nacional Autónoma de México México Guevara, Gonzalo; Bonito, Gregory; Cázares, Efrén Revisión del género Tuber (Tuberaceae: Pezizales) de México Revista Mexicana de Biodiversidad, vol. 84, 2013, pp. s39-s49 Universidad Nacional Autónoma de México Distrito Federal, México Disponible en: http://www.redalyc.org/articulo.oa?id=42528281007 Cómo citar el artículo Número completo Sistema de Información Científica Más información del artículo Red de Revistas Científicas de América Latina, el Caribe, España y Portugal Página de la revista en redalyc.org Proyecto académico sin fines de lucro, desarrollado bajo la iniciativa de acceso abierto Revista Mexicana de Biodiversidad: S39-S49, 2013 Revista Mexicana de Biodiversidad: S39-S49, 2013 DOI: 10.7550/rmb.31981 DOI: 10.7550/rmb.31981S39 Revisión del género Tuber (Tuberaceae: Pezizales) de México Revision of the genus Tuber (Tuberaceae: Pezizales) from Mexico Gonzalo Guevara1 , Gregory Bonito2 y Efrén Cázares3 1Instituto Tecnológico de Cd. Victoria. Av. E. Portes Gil 1301 Pte., 87010 Cd. Victoria, Tamaulipas, México. 2Department of Biology, Duke University, Durham, North Carolina 27708. USA. 3Department of Forest Ecosistems and Society, Richardson Hall, Oregon State University, Corvallis, Oregon 97331-5752. USA. [email protected] Resumen. Las especies del género Tuber han recibido escasa atención taxonómica en México, a pesar de su gran importancia ecológica y económica. A la fecha, 10 especies han sido descritas para el país. En este estudio se describen por primera vez para la micobiota Mexicana a Tuber canaliculatum, T. gibbosum y T. malacodermum. Las especies fueron determinadas por una combinación de características principalmente morfológicas y ecológicas. Así mismo, se presenta una clave dicotómica de las especies conocidas y descritas para México. Palabras clave: Abies religiosa, trufas, hongos hipogeos, taxonomía, secotioides, nuevos registros. Abstract. Species in the genus Tuber have received little taxonomic attention in Mexico, despite its great ecological and economic importance. Only 10 species have been described for Mexico. In this study, Tuber canaliculatum, T. gibbosum, and T. malacodermum are described for the first time for the Mexican mycobiota. These species are distinguished by a combination of morphological and ecological characteristics. Illustarations and a dichotomic key are presented for the known described species from Mexico. Key words: Abies religiosa, truffle, hypogeous fungi, taxonomy, sequestrate, new records Introducción Además, sus especies forman parte de la dieta de pequeños mamíferos roedores, así como de venados, osos, jabalíes Originalmente todas las verdaderas trufas eran y de invertebrados, como insectos y caracoles, entre consideradas en el Orden Tuberales (Gilkey, 1916) hasta otros dispersores importantes para la diseminación de sus que su validez fue cuestionada por Trappe (1979). Recientes propágalos (McGraw et al., 2002; Hochberg et al., 2003; análisis moleculares muestran que las trufas corresponden Maser et al., 2008). al menos a 5 o 6 linajes independientes, dentro del Regularmente las especies del género Tuber son Orden Pezizales y están representadas en 55 géneros, económicamente importantes porque algunas de ellas de los cuáles sólo 5 pertenecen a la Familia Tuberaceae han sido cultivadas para consumo humano (e.g. Tuber (Tuber, Choiromyces, Dingleya, Labyrinthomyces y borchii Vittad., T. melanosporum Vittad., entre otras) y Reddellomyces) (O’Donnell et al., 1997; Læssoe y Hansen, esta actividad se ha convertido en la base de una industria 2007). multimillonaria, principalmente en Europa pero no existe El género Tuber fue acuñado por P. Micheli en 1729 en México (Palenzona et al., 1972; Mischiati y Fontana, siendo la especie tipo T. brumale Vittad. (Vittadini, 1993; Moreno-Arroyo et al., 2005; Paolocci et al., 2006; 1831; Montecchi y Sarasini, 2000). Las especies del Guevara et al., 2008; Trappe et al., 2009). género Tuber, son de importancia ecológica y económica Kirk et al. (2008) mencionan que se conocen 86 (Moreno-Arroyo et al., 2005; Mello et al., 2006; Tedersoo especies del género Tuber en el mundo. Más de 60 especies et al., 2006; Læssoe y Hansen, 2007; Trappe et al., 2009). de Tuber han sido descritas principalmente de los bosques Crecen en asociación simbiótica micorrízica con árboles de templados del oeste de EUA (Trappe et al., 2009). Para gimnospermas y angiospermas incluyendo varias especies México, hasta antes de la presente investigación, sólo de orquídeas (Wurzburger et al., 2001; Bidartondo et habían sido citadas 10 especies (Cuadro 1). A pesar de al., 2004; Walker et al., 2005; Shefferson et al., 2008). la alta diversidad de hongos macromicetos que se estima existen en México, las especies de Tuber citadas para el país representan sólo el 16% de las descritas para E.U Recibido: 26 mayo 2012; aceptado: 26 noviembre 2012 (Trappe y Guzmán, 1971; Garza et al., 1985; Cázares et S40 Guevara et al.- Tuber (Pezizales) de México Cuadro 1. Especies de Tuber conocidas y descritas para México Especie Localidad Referencia Tuber canaliculatum Gilkey Nuevo León * Tuber castilloi Guevara, Bonito y Trappe Nuevo León, Tamaulipas Guevara et al., 2012 Tuber gardneri Gilkey (como T. Coahuila, México, Morelos y Nuevo Trappe y Guzmán 1971; Cázares et al., murinum Hesse) León 1992 Tuber gibbosum Harkn. Estado de México * Tuber guevarai Bonito y Trappe Tamaulipas Guevara et al., 2012 Tuber guzmanii Trappe y Cázares Morelos Trappe y Cázares 2006 Tuber lyonii Butters (como T. rufum Nuevo León, Tamaulipas Cázares et al., 1992; Garza et al., var. nitidum (Vitt.) Fisher o T. candidum 1985; Trappe y Cázares 2006; García y Hark Guevara 2005 Tuber maculatum Vitt. Nuevo León Cázares et al., 1992 Tuber malacodermum Fisher Nuevo León * Tuber mexiusanum Guevara, Bonito y Coahuila, Tamaulipas Guevara et al., 2012 Cázares Tuber miquihuanense Guevara, Bonito y Tamaulipas Guevara et al., 2012 Cázares Tuber regimontanum Guevara, Bonito y Nuevo León Guevara et al., 2008 Rodríguez Tuber separans Gilkey Nuevo León Cázares et al., 1992 *Este artículo. al., 1992; Trappe et al., 1996; García y Guevara, 2005; Se utilizaron características morfológicas y aspectos Trappe y Cázares, 2006; Guevara et al., 2008; Guevara ecológicos para distinguir estas especies. Esta revisión et al., 2012). tiene como objetivo contribuir al conocimiento de la La taxonomía de las trufas es particularmente difícil biodiversidad, ecología y biogeografía de las especies del debido a la delimitación de las especies dentro de los género Tuber de México. En el presente trabajo se hace grupos (Halász et al., 2005; Bonito et al., 2010a). Sus una descripción completa de las 3 especies anteriormente características morfológicas en muchos casos son confusas, mencionadas, se proporcionan comentarios taxonómicos por su variación debido a factores edáficos y ambientales, de las especies previamente citadas para el país y una clave así como genéticos. En estos casos los datos ecológicos taxonómica para la determinación de las 13 especies de y los análisis moleculares pueden dar información Tuber que se reconocen para México. complementaria sobre su ubicación taxonómica, sin embargo, no siempre es sencillo. Materiales y métodos Existe una gran controversia acerca de la posición taxonómica y filogenética de algunas de las especies Recolección de ejemplares. En esta investigación se recientemente colectadas en México y EUA, y sobre la estudiaron más de 100 ascomas de Tuber spp., la mayoría se aplicación de nombres de especies que fueron descritas de recolectó recientemente (en el otoño de 2008, 2009 y 2010) Europa a especies que prosperan en Norteamérica (Harkness, y otros son especímenes que ya se encontraban depositados 1899; Gilkey, 1954; Trappe, 1979: Trappe y Cázares, en los herbarios de OSC y del ITCV (http://www.nybg. 2000). Recientemente, algunos análisis moleculares de las org/bsci/ih/ih.html). Los ejemplares recolectados proceden especies de Tuber demostraron que ejemplares del noreste, de la sierra Madre Oriental de Tamaulipas (El Diente, centro y sur de México son genéticamente diversos (Bonito sierra de San Carlos, San José y La Joya de Gómez Farías, et al., 2010a; Guevara et al., 2012). Miquihuana), Nuevo León (montaña de Chipinque, Santa En esta investigación, Tuber canaliculatum Gilkey, Catarina, Puerto Genovevo, Santiago), Coahuila (La T. gibbosum Harkn. y T. malacodermum E. Fisch., son Siberia, Arteaga), Veracruz (Cofre de Perote). Además de descritas por primera vez para la micobiota mexicana. la sierra Madre Occidental, Jalisco (Parque Nacional La Revista Mexicana de Biodiversidad: S39-S49, 2013 DOI: 10.7550/rmb.31981 S41 Primavera, volcán Tequila) y algunas localidades del centro en KOH 5%, agua y reactivo de Melzer. Las estructuras de México (Puebla, Tlaxcala, Estado de México). Los microscópicas de los especímenes se midieron y se ecosistemas forestales dominantes en donde se recolectó, fotografiaron en un microscopio compuesto marca Carl fueron principalmente bosques mixtos de encino-pino Zeiss (Axistar) y en un estereoscopio de la misma marca y abeto. Todos los especímenes fueron herborizados y con una cámara Canon Power Shot G5. preservados siguiendo las recomendaciones de Castellano et al. (1989). Posteriormente fueron depositados en el Descripciones Herbario José Castillo Tovar (ITCV) con duplicados en los herbarios de Oregon State University (OSC), Universidad Tuber canaliculatum Gilkey,
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