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Acaulospora Sieverdingii, an Ecologically Diverse New Fungus In
Journal of Applied Botany and Food Quality 84, 47 - 53 (2011) 1Agroscope Reckenholz-Tänikon Research Station ART, Ecological Farming Systems, Zürich, Switzerland 2Institute of Botany, Academy of Sciences of the Czech Republic, Průhonice, Czech Republic 3Department of Plant Protection, West Pomeranian University of Technology, Szczecin, Poland 4Université de Bourgogne, Plante-Microbe-Environnement, CNRS, UMR, INRA-CMSE, Dijon, France 5International Institute of Tropical Agriculture (IITA), Ibadan, Nigeria 6Université de Lomé, Ecole Supérieure d’Agronomie, Département de la Production Végétale, Laboratoire de Virologie et de Biotechnologie Végétales (LVBV), Lomé, Togo 7International Institute of Tropical Agriculture (IITA), Cotonou, Benin 8University of Parakou, Ecole National des Sciences Agronomiques et Techniques, Parakou, Benin 9Departamento de Micologia, CCB, Universidade Federal de Pernambuco, Cidade Universitaria, Recife, Brazil Acaulospora sieverdingii, an ecologically diverse new fungus in the Glomeromycota, described from lowland temperate Europe and tropical West Africa Fritz Oehl1*, Zuzana Sýkorová2, Janusz Błaszkowski3, Iván Sánchez-Castro4, Danny Coyne5, Atti Tchabi6, Louis Lawouin7, Fabien C.C. Hountondji7, 8, Gladstone Alves da Silva9 (Received December 12, 2010) Summary Materials and methods From a survey of arbuscular mycorrhizal (AM) fungi in agro- Soil sampling and spore isolation ecosystems in Central Europe and West Africa, an undescribed Between March 2000 and April 2009, soil cores of 0-10 cm depth species of Acaulospora was recovered and is presented here under were removed from various agro-ecological systems. These were the epithet Acaulospora sieverdingii. Spores of A. sieverdingii are approximately 300 lowland, mountainous and alpine sites in 60-80 µm in diam, hyaline to subhyaline to rarely light yellow and Germany, France, Italy and Switzerland, and 24 sites in Benin have multiple pitted depressions on the outer spore wall similar (tropical West Africa). -
FUNGOS MICORRÍZICOS ARBUSCULARES NA CULTURA DO SISAL (Agave Sisalana): OCORRÊNCIA E DIVERSIDADE NA REGIÃO SEMIÁRIDA DA BAHIA
UNIVERSIDADE FEDERAL DO RECÔNCAVO DA BAHIA CENTRO DE CIÊNCIAS AGRÁRIAS AMBIENTAIS E BIOLÓGICAS EMBRAPA MANDIOCA E FRUTICULTURA TROPICAL PROGRAMA DE PÓS-GRADUAÇÃO EM MICROBIOLOGIA AGRÍCOLA CURSO DE MESTRADO FUNGOS MICORRÍZICOS ARBUSCULARES NA CULTURA DO SISAL (Agave sisalana): OCORRÊNCIA E DIVERSIDADE NA REGIÃO SEMIÁRIDA DA BAHIA ADRIANE FREIRE ARAÚJO CRUZ DAS ALMAS - BAHIA MARÇO - 2012 FUNGOS MICORRÍZICOS ARBUSCULARES NA CULTURA DO SISAL (Agave sisalana): OCORRÊNCIA E DIVERSIDADE NA REGIÃO SEMIÁRIDA DA BAHIA ADRIANE FREIRE ARAÚJO Bióloga Universidade Estadual da Bahia – UNEB, 2009 Dissertação submetida ao Colegiado do Programa de Pós-Graduação em Microbiologia Agrícola da Universidade Federal do Recôncavo da Bahia e Embrapa Mandioca e Fruticultura Tropical, como requisito parcial para obtenção do Grau de Mestre em Microbiologia Agrícola. Orientador: Drª. Ana Cristina Fermino Soares Co-Orientador: Drª. Carla da Silva Sousa Co-Orientador: Dr. Bruno Tomio Goto CRUZ DAS ALMAS - BAHIA MARÇO – 2012 FICHA CATALOGRÁFICA A663 Araújo, Adriane Freire. Fungos micorríziocos arbusculares na cultura do sisal (Agave sisalana): ocorrência e diversidade na Região Semiárida da Bahia / Adriane Freire Araújo._. Cruz das Almas, BA, 2012. 56f.; il. Orientadora: Ana Cristina Fermino Soares. Coorientadora: Carla da Silva Sousa e Bruno Tomio Goto. Dissertação (Mestrado) – Universidade Federal do Recôncavo da Bahia, Centro de Ciências Agrárias, Ambientais e Biológicas. 1.Sisal – Cultivo. 2.Sisal – Fungos fitopatogênicos. I.Universidade Federal do Recôncavo da Bahia, -
Checklist of the Glomeromycota in the Brazilian Savanna
Checklist of the Glomeromycota in the Brazilian Savanna KHADIJA JOBIM¹, BRUNA IOHANNA SANTOS OLIVEIRA², BRUNO TOMIO GOTO³ 1Programa de Pós-Graduação em Sistemática e Evolução, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brazil 2Programa de Pós-Graduação em Ciências Ambientais, Universidade Federal do Oeste da Bahia, 47808-021, Barreiras, BA, Brazil 3Departamento de Botânica e Zoologia, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brazil *CORRESPONDENCE TO: [email protected] ABSTRACT — The Brazilian savanna (Cerrado) was the first Brazilian biome to be surveyed for arbuscular mycorrhizal fungi (AMF) and currently comprises the third Brazilian biome in species representation. This paper provides a checklist of arbuscular mycorrhizal fungi (AMF) in the Cerrado. A total of 92 species of AMF have been found in the Brazilian Cerrado over three decades of work conducted in this biome. The results characterize the Cerrado as an important AMF reservoir and show that rupestrian fields, one of several physiognomies of the cerrado, are biologically promising. KEY WORDS— biodiversity, taxonomy, conservation, cerrado Introduction The arbuscular mycorrhizal fungi (AMF) make up the Glomeromycota currently divided into three classes (Archaeosporomycetes, Glomeromycetes and Paraglomeromycetes), five orders (Archaeosporales, Diversisporales, Gigasporales, Glomerales and Paraglomerales), 15 families, 38 genera and approximately 270 species (Oehl et al. 2011; Błaszkowski 2012, 2014; Goto et al. 2012, Marinho et al. 2014; Oehl et al. 2015). These fungi form arbuscular mycorrhizal associations with more than 80% of terrestrial plant, except for one species, Geosiphon pyriformis, a unique glomeromycotan forming association with cyanobacteria Nostoc (Smith & Read 2008; Wettstein 1915). -
Distribution of Arbuscular Mycorrhizal Fungi (AMF) in Terceira and São Miguel Islands (Azores)
Biodiversity Data Journal 8: e49759 doi: 10.3897/BDJ.8.e49759 Data Paper Distribution of arbuscular mycorrhizal fungi (AMF) in Terceira and São Miguel Islands (Azores) Catarina Drumonde Melo‡,§, Christopher Walker|,¶, Helena Freitas #, Artur Câmara Machado¤, Paulo A. V. Borges‡ ‡ cE3c – Centre for Ecology, Evolution and Environmental Changes / Azorean Biodiversity Group and Universidade dos Açores - Departamento de Ciências Agrárias e do Ambiente, Rua Capitão João d’Ávila, São Pedro, 9700-042, Angra do Heroísmo, Terceira, Azores, Portugal § CFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, 3001-401, Coimbra, Portugal | Royal Botanic Garden Edinburgh, 20A Inverleith Row, EH3 5LR, Edinburgh, United Kingdom ¶ School of Agriculture and Environment, University of Western Australia, 35 Stirling Highway, Perth WA 6009, Crawley, Australia # CFE – Centre for FunctionalCFE - Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, 3001-401, Coimbra, Portugal ¤ CBA-UAç – Biotechnology Center of Azores, Universidade dos Açores - Departamento de Ciências e Engenharia do Ambiente, Rua Capitão D´Ávila, 9700-042, Angra do Heroísmo, Portugal Corresponding author: Catarina Drumonde Melo ([email protected]) Academic editor: Dmitry Schigel Received: 30 Dec 2019 | Accepted: 08 Mar 2020 | Published: 01 Apr 2020 Citation: Melo CD, Walker C, Freitas H, Machado AC, Borges PAV (2020) Distribution of arbuscular mycorrhizal fungi (AMF) in Terceira and São Miguel Islands (Azores). Biodiversity Data Journal 8: e49759. https://doi.org/10.3897/BDJ.8.e49759 Abstract Background The data, presented here, come from samples collected during three research projects which aimed to assess the impact of land-use type on Arbuscular Mycorrhizal Fungi (AMF) diversity and community composition in pastures of Terceira Island (Azores, Macaronesia, Portugal) and also in the native forest of two Azorean Islands (Terceira and São Miguel; Azores, Macaronesia, Portugal). -
Arbuscular Mycorrhizal Fungi Associated with Tree Species in a Planted Forest of Eastern China
Article Arbuscular Mycorrhizal Fungi Associated with Tree Species in a Planted Forest of Eastern China Jinping Wang 1,2, G. Geoff Wang 2, Bo Zhang 3, Zhongming Yuan 1, Zhiyuan Fu 1, Yingdan Yuan 1, Lingjun Zhu 1, Shilin Ma 1 and Jinchi Zhang 1,* 1 Co-Innovation Center for Sustainable Forestry in Southern China, Jiangsu Province Key Laboratory of Soil and Water Conservation and Ecological Restoration, Nanjing Forestry University, 159 Longpan Road, Nanjing 210037, China; [email protected] (J.W.); [email protected] (Z.Y.); [email protected] (Z.F.); [email protected] (Y.Y.); [email protected] (L.Z.); [email protected] (S.M.) 2 Department of Forestry and Environmental Conservation, Clemson University, Clemson, SC 29634, USA; [email protected] 3 Department of Environmental Science and Policy, University of California, Davis, CA 95615, USA; [email protected] * Correspondence: [email protected]; Tel.: +86-854-272-02 Received: 17 April 2019; Accepted: 15 May 2019; Published: 16 May 2019 Abstract: Arbuscular mycorrhizal fungi (AMF) play an important role in the establishment and maintenance of plant communities in forest ecosystems. Most previous studies about AMF have been conducted in natural forests, and little attention has been paid to trees in planted forests. This study investigated AMF associated with tree species and the relationships between edaphic factors and AMF communities in a planted forest of eastern China. We found high total AMF colonization rates in the roots of Carya illinoensis (Wangenh.) K. Koch, Zelkova serrata (Thunb.) Makinoz, Taxodium ‘zhongshansha’, Eucommia ulmoides Oliv., and Elaeagnus pungens Thunb., ranging from 62.07% to 100%, indicating that AMF can establish effective symbiotic relationships with these tree species. -
<I>Acaulospora Reducta</I>
ISSN (print) 0093-4666 © 2015. Mycotaxon, Ltd. ISSN (online) 2154-8889 MYCOTAXON http://dx.doi.org/10.5248/130.983 Volume 130, pp. 983–995 October–December 2015 Acaulospora reducta sp. nov. and A. excavata — two glomeromycotan fungi with pitted spores from Brazil Camilla M.R. Pereira1, Bruno Tomio Goto2, Danielle Karla Alves da Silva1,3, Araeska Carenna de Almeida Ferreira1, Francisco Adriano de Souza4, Gladstone Alves da Silva1, Leonor C. Maia1 & Fritz Oehl1,5* 1Departamento de Micologia, CCB, Universidade Federal de Pernambuco, Av. da Engenharia s/n, Cidade Universitária, 50740-600, Recife, PE, Brazil 2Departamento de Botânica e Zoologia, CB, Universidade Federal do Rio Grande do Norte, Campus Universitário, 59072-970, Natal, RN, Brazil 3Universidade Federal do Vale do São Francisco, Campus de Ciências Agrárias, Colegiado de Zootecnia, 56300-990, Petrolina, PE, Brazil 4Embrapa Milho e Sorgo, Sete Lagoas, Minas Gerais, Brazil 5Agroscope, Federal Research Institute for Sustainability Sciences, Plant-Soil-Interactions, Reckenholzstrasse 191, CH-8046 Zürich, Switzerland *Correspondence to: [email protected] Abstract — Acaulospora reducta sp. nov. and A. excavata, both characterized by large pits on their spore surfaces, were found in the semi-humid Atlantic rainforest and semi- arid Caatinga biomes of Northeastern Brazil. Phylogenetic analyses of the ITS regions of the ribosomal gene place the two fungi in two distinct clades within the Acaulosporaceae. Acaulospora reducta has whitish yellow, dark yellow to light brown spores (135–205 µm in diam.) and irregularly shaped, often edged to sometimes dumbbell-shaped pits (5.5–19 × 3.5–8.6 µm). These large pits have roughened irregular surfaces comprising secondary small pits (c. -
Acaulospora Aspera, a New Fungal Species in the Glomeromycetes from Rhizosphere Soils of the Inka Nut (Plukenetia Volubilis
Journal of Applied Botany and Food Quality 92, 250 - 257 (2019), DOI:10.5073/JABFQ.2019.092.035 1Laboratorio de Biología y Genética Molecular, Universidad Nacional de San Martín, Morales, Peru 2Instituto Nacional de Innovación Agraria (INIA), Dirección General de Recursos Genéticos y Biotecnología, La Molina - Lima, Peru 3Departamento de Micologia, CB, Universidade Federal de Pernambuco, Cidade Universitária, Recife, Brazil 4Agroscope, Competence Division for Plants and Plant Products, Ecotoxicology, Wädenswil, Switzerland Acaulospora aspera, a new fungal species in the Glomeromycetes from rhizosphere soils of the inka nut (Plukenetia volubilis L.) in Peru Mike Anderson Corazon-Guivin1*, Agustin Cerna-Mendoza1, Juan Carlos Guerrero-Abad1,2, Adela Vallejos-Tapullima1, Gladstone Alves da Silva3, Fritz Oehl4* (Submitted: July 1, 2019; Accepted: September 8, 2019) Summary In San Martín State, located in the transition of the last mountain A new fungal species of the Glomeromycetes, Acaulospora aspera, ridges in the Peruvian Andes towards the Amazonian lowlands, a was isolated from the rhizosphere of the inka nut (Plukenetia volubi- few new AM fungal species have been detected recently, such as two lis) in San Martín State of Peru (Western Amazonia) and propagated new species of the Glomeraceae, Funneliglomus sanmartinensis and in bait cultures on Sorghum spp., Brachiaria brizantha, Medicago Microkamienskia peruviana (Corazon-Guivin et al., 2019a, b). Re- sativa and P. volubilis as host plants. The fungus forms brownish markably, these were isolated in rhizosphere soils of the inka nut yellow to yellow brown spores, (120-)135-195 × (120-)130-187 μm in (Plukenetia volubilis L.) that usually is grown there in mixed cul- diameter. -
197 Hongos Micorrícico Arbusculares Presentes En Bosques De Alnus
A. Becerra y M. Cabello, Hongos micorrícico arbuscularesISSN de 0373-580 la Yunga X Bol. Soc. Argent. Bot. 43 (3-4): 197 - 203. 2008 Hongos micorrícico arbusculares presentes en bosques de Alnus acuminata (Betulaceae) de la yunga argentina ALEJANDRA BECERRA1 y MARTA CABELLO2 Summary: Arbuscular mycorrhizal fungi in the Yungas forests of Alnus acuminata (Betulaceae) Argentina. In this study 22 species of Arbuscular Mycorrhizal Fungi (AMF) are cited for the rhizosphere of Betulaceae, Fabaceae, Oxalidaceae, Rosaceae and Caprifoliaceae families of the Argentinian Yunga. Pacispora chimonobambusae (Wu & Liu) Sieverd. & Oehl ex Walker, Vestberg & Schüβler and Glomus lacteum Rose & Trappe are new registers for Argentina. The distribution area of Acaulospora denticulata Sieverding & Toro, A. excavata Ingleby & Walker, A. laevis Gerdemann & Trappe, A. mellea Spain & Schenck, A. rehmii Sieverding & Toro, A. scrobiculata Trappe, A. spinosa Walker & Trappe, Ambispora leptoticha Walker, Vestberg & Schüβler, Entrophospora infrequens (Hall) Ames & Schneider, Glomus claroideum Schenck & Smith, G. clarum Nicolson & Schenck, G. fuegianum (Speg.) Trappe & Gerdemann, G. geosporum (Nicolson & Gerdemann) Walker, G. intraradices Schenck & Smith, Scutellospora biornata Spain, Sieverding & Toro and S. dipapillosa (Walker & Koske) Walker & Sanders was enlarged. Key words: Alnus, arbuscular mycorrhiza fungi, Glomus, Pacispora, Yunga. Resumen: En este trabajo se citan 22 especies de Hongos Micorrícico Arbusculares (HMA) presentes en la rizosfera de plantas pertenecientes a las familias Betulaceae, Fabaceae, Oxalidaceae, Rosaceae y Caprifoliaceae de la Yunga Argentina. Se dan a conocer como nuevas citas específicas para el país a Pacispora chimonobambusae (Wu & Liu) Sieverd. & Oehl ex Walker, Vestberg & Schüβler y Glomus lacteum Rose & Trappe. Se amplía la distribución para el país de Acaulospora denticulata Sieverding & Toro, A. -
Inventario De Grupos De Hongos En La Ciénaga De Zapata, Cuba
Inventario de grupos de hongos en la Ciénaga de Zapata, Cuba. III Proyecto PNAP Instituto de Ecología y Sistemática, AMA-CITMA 2014 Título: Inventario de grupos de hongos en la Ciénaga de Zapata, Cuba. III Código: Proyecto PNAP, AMA-CITMA Unidad ejecutora: Instituto de Ecología y Sistemática, AMA-CITMA Fecha de Inicio: Enero 2014 Fecha Terminación: Diciembre 2014 Participantes: RECURSOS HUMANOS PRINCIPALES NOMBRE Y Marcar si Grado Categoría Entidad % de APELLIDOS es Jefe de Científico científica, docente participación Resultado o tecnológica X Dr. Inv. auxiliar IES 100 Julio Mena Portales X M.Sc. Inv. auxiliar IES 50 Jorge L. Ortiz Medina Nelis Blanco X M.Sc. Inv. auxiliar IES 60 Hernández Eduardo Furrazola M.Sc. Inv. auxiliar IES 20 Gómez M.Sc. Inv. auxiliar IES 20 Ana Martell García M.Sc. Inv. agregado IES 20 Yamir Torres Arias Raquel Rodríguez Lic. Asp. Inv. IES 15 Rodríguez Lic. Especialista IES 100 Irina Jiménez Gómez Lic. Especialista IES 100 Taimy Cantillo Pérez Susett González Lic. Especialista IES 80 González Lic. Especialista IES 70 Rafaela Aguilera Lic. Reserva IES 70 Rosalba Ortega Fors Roberto Pons Técnico IES 70 Penabad Técnico IES 100 Yaranai Reina Osbel A. Gómez Técnico IES 20 Ricardo Técnico IES 20 Carlos M. Massia Esther Collazo Técnico IES 10 Albernas Técnico IES 10 Erick Lacal Rodríguez Colaboradores nacionales: Instituto de Ecología y Sistemática (IES) Ramona Oviedo Prieto, Nancy Ricardo Nápoles, Jorge Sánchez Rendón, Sara Herrera Figueroa (jubilada) Jardín Botánico Nacional (JBN) Mayra Camino Vilaró, Gloria Recio Herrera, Susana Maldonado González, Milay Cabarroi Hernández, Marguit Clavel Calzado. Instituto de Oceanología (IDO) Diana Enrique Lavandera Centro Nacional de Áreas Protegidas (CNAP) María A. -
Arbuscular Mycorrhizal Fungal Communities in Sub-Saharan Savannas of Benin, West Africa, As Affected by Agricultural Land Use Intensity and Ecological Zone
View metadata, citation and similar papers at core.ac.uk brought to you by CORE provided by RERO DOC Digital Library Mycorrhiza (2008) 18:181–195 DOI 10.1007/s00572-008-0171-8 ORIGINAL PAPER Arbuscular mycorrhizal fungal communities in sub-Saharan Savannas of Benin, West Africa, as affected by agricultural land use intensity and ecological zone Atti Tchabi & Danny Coyne & Fabien Hountondji & Louis Lawouin & Andres Wiemken & Fritz Oehl Received: 7 September 2007 /Accepted: 7 March 2008 / Published online: 2 April 2008 # Springer-Verlag 2008 Abstract The rapid decline of soil fertility of cultivated the Sudan Savanna (SU). In each zone, four “natural” and lands in the sub-Saharan savannas of West Africa is four “cultivated” sites were selected. “Natural” sites were considered to be the main cause of the increasingly severe three natural forest savannas (at least 25–30 years old) and constraints of food production. The soils in this tropical a long-term fallow (6–7 years old). “Cultivated” sites area are highly fragile, and crop yields are limited by comprised a field with yam (Dioscorea spp.) established characteristically low levels of available phosphorus. Under during the first year after forest clearance, a field under such preconditions, the multiple benefits of the arbuscular mixed cropping with maize (Zea mays) and peanut (Arachis mycorrhizal (AM) symbiosis are likely to play a pivotal hypogaea), a field under peanut, and a field under cotton role for maintaining natural soil fertility by enhancing plant (Gossypium hirsutum) which was the most intensively nutrient use efficiency, plant health, and stabilization of a managed crop. -
Catálogo De Hongos Micorrizógenos Arbusculares De Huertos De Aguacate De Michoacán, México
Proceedings VII World Avocado Congress 2011 (Actas VII Congreso Mundial del Aguacate 2011). Cairns, Australia. 5 – 9 September 2011 Catálogo de hongos micorrizógenos arbusculares de huertos de aguacate de Michoacán, México A. Bárcenas-Ortega*1, L. Varela-Fregoso1, SL. Stürmer2, AT. Chávez-Bárcenas1 1 Facultad de Agrobiología “Presidente Juárez”, Universidad Michoacana de San Nicolás de Hidalgo. Paseo Lázaro Cárdenas S/N Esq. Berlín, Col. Viveros, Uruapan, Michoacán, CP 60190, México. 2Departamento de Ciências Naturais, Universidade Regional de Blumenau, Rua Richard Franz Parucker, 123. Bairro Itoupava Seca, 89030-520 Blumenau, SC, Brasil. Resumen El objetivo de la investigación fue determinar la diversidad de especies de hongos micorrizógenos arbusculares (HMA) presentes en el cultivo del aguacate, en siete climas en los que se encuentra establecido el 98.6% de los huertos del estado de Michoacán, México y elaborar un catálogo ilustrado que facilite su identificación. Se efectuaron dos muestreos, uno en lluvias y otro en estiaje en 14 huertos. Se tomaron muestras de suelo de 4 kg cercano a la raíz de los árboles, a una profundidad de 30 cm, 100 g de cada muestra se usaron para extraer directamente las esporas y el suelo restante para su propagación en macetas, empleando maíz como cultivo trampa. Para extraer las esporas se utilizó el protocolo de tamizado húmedo y decantación seguido de centrifugación en sacarosa. Las esporas se montaron en preparaciones usando alcohol polivinílico glicerol con y sin reactivo de Melzer. La identificación taxonómica se efectuó bajo microscopio compuesto, con base en las descripciones originales. Se tomaron fotografías de cada una de las especies utilizando un microscopio Zeiss Axiostar acoplado a una cámara digital Power Shot A620 de Canon. -
Hongos Micorrízicos Arbusculares Asociados a La Rizosfera De Agave Cupreata En Regiones Mezcaleras Del Estado De Michoacán, México
Scientia Fungorum vol. 45: 13-25 2017 Hongos micorrízicos arbusculares asociados a la rizosfera de Agave cupreata en regiones mezcaleras del estado de Michoacán, México Arbuscular mycorrhizal fungi associated in the rhizosphere of Agave cupreata in mezcal regions from Michoacán, Mexico Jesús Rafael Trinidad-Cruz1, Evangelina Esmeralda Quiñones-Aguilar1, Laura Verónica Hernández-Cuevas2, Luis López-Pérez3, Gabriel Rincón-Enríquez1 1 Biotecnología Vegetal, Centro de Investigación y Asistencia en Tecnología y Diseño del Estado de Jalisco, A.C. Camino Arenero 1227, El Bajío del Arenal, C.P. 45019. Zapopan, Jalisco, México. 2 Laboratorio de Micorrizas, Centro de Investigación de Ciencias Biológicas, Universidad Autónoma de Tlaxcala. Km 10.5 Carretera San Martin Texmelucan-Tlaxcala S/N, San Felipe Ixtacuixtla, C.P. 90120. Ixtacuixtla de Mariano Matamoros, Tlaxcala, México. 3 Instituto de Investigaciones Agropecuarias y Forestales, Universidad Michoacana de San Nicolás de Hidalgo. Km 9.5 Carretera Morelia- Zinapécuaro. Tarímbaro, Michoacán, México. Gabriel Rincón-Enríquez, e-mail: [email protected] RESUMEN Antecedentes: Los hongos micorrízicos arbusculares (HMA) forman asociaciones simbióticas con la mayoría de las especies vegetales, por lo cual es importante conocer la riqueza, diversidad y funcionalidad de estas especies de HMA. Objetivo: Determinar la composición y abundancia de esporas de HMA asociados a la rizosfera de Agave cupreata en la época seca y de lluvia en regiones mezcaleras de Michoacán. Métodos: En dos épocas se muestreó suelo rizosférico de A. cupreata en ocho sitios; parte de los suelos de cada sitio se usó para la pro- pagación de HMA. Las esporas de los HMA se identificaron taxonómicamente con base en su morfología, por sitio, época de muestreo y maceta de propagación.