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      Dinámica de la diversidad temporal de los hongos micorrícicos arbusculares de Larrea tridentata (Sesse & Mocino ex DC) Coville en un ecosistema semiárido Translated title: Temporal diversity dynamics of the arbuscular mycorrhizal fungi of Larrea tridentata (Sesse & Mocino ex DC) Coville in a semi-arid ecosystem

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          Abstract

          Los hongos micorrícicos arbusculares (HMA) de los ambientes áridos y semiáridos son importantes para el desarrollo de las plantas que crecen bajo estrés biótico y abiótico en áreas naturales o en agroecosistemas. Existe poca información sobre la diversidad temporal de los HMA en plantas perennes de ecosistemas áridos en el norte de México. En este estudiose evaluaron la colonización micorrícica y la diversidad temporal de los HMA en la rizosfera de Larrea tridentata, planta perenne de amplia distribución en el Desierto Chihuahuense. Se obtuvieron muestras de la rizosfera y de raíces de 15 plantas, en 3 fechas de muestreo del año 2015. Se encontró un total de 17 especies de HMA, distribuidas en 12 géneros y 7 familias dentro del phylum Glomeromycota. La especie más abundante fue Funneliformis geosporum. Esta especie pertenece a la familia Glomeraceae, la única que estuvo representada con varios géneros en L. tridentata. El mayor porcentaje de micorrización se presentó en febrero, con un 83,22%, en septiembre fue del 75,27% y en mayo del 65,27%. El muestreo realizado en febrero presentó el mayor número de especies (16), seguido por el de mayo (15) y el de septiembre (12). El análisis estadístico mostró diferencias significativas en el número de esporas entre los muestreos de febrero y los de mayo y septiembre.

          Translated abstract

          Arbuscular mycorrhizal fungi (AMF) of arid and semiarid ecosystems are important for the development of plants that grow under biotic stress in wild or in agro-ecosystems. There is little information on the temporal diversity of these organisms in perennial plants from arid ecosystems in northern Mexico. On this study, the mycorrhizal colonization and the temporal diversity of AMF in the rhizosphere of Larrea tridentata, perennial plant abundant in the Chihuahuan Desert region were explored. Samples of the rhizosphere and roots of fifteen plants in each of the three sampling dates during the 2015 year were obtained. A total of 17 species of HMA belonging to 12 genera and 7 families within the phylum Glomeromycota in all three sampling dates were found. Funneliformis geosporum was the dominant species belonging to the family Glomeraceae which possess the highest genera number on L. tridentata.The highest mycorrhization percentage was in February with 83.22, followed by September and May with 75.27 and 65.27%, respectively. A maximum of 16 AM fungal species were isolated and identified from L. tridentata rhizosphere in February, 15 species in May and 12 species in September. Statistical analysis showed significant differences between sampling dates in the spores number.

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          Most cited references32

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          A new fungal phylum, the Glomeromycota: phylogeny and evolution

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            Mycorrhizal Fungi: Highways for Water and Nutrients in Arid Soils

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              Species richness of arbuscular mycorrhizal fungi: associations with grassland plant richness and biomass.

              Although experiments show a positive association between vascular plant and arbuscular mycorrhizal fungal (AMF) species richness, evidence from natural ecosystems is scarce. Furthermore, there is little knowledge about how AMF richness varies with belowground plant richness and biomass. We examined relationships among AMF richness, above- and belowground plant richness, and plant root and shoot biomass in a native North American grassland. Root-colonizing AMF richness and belowground plant richness were detected from the same bulk root samples by 454-sequencing of the AMF SSU rRNA and plant trnL genes. In total we detected 63 AMF taxa. Plant richness was 1.5 times greater belowground than aboveground. AMF richness was significantly positively correlated with plant species richness, and more strongly with below- than aboveground plant richness. Belowground plant richness was positively correlated with belowground plant biomass and total plant biomass, whereas aboveground plant richness was positively correlated only with belowground plant biomass. By contrast, AMF richness was negatively correlated with belowground and total plant biomass. Our results indicate that AMF richness and plant belowground richness are more strongly related with each other and with plant community biomass than with the plant aboveground richness measures that have been almost exclusively considered to date.
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                Author and article information

                Contributors
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Role: ND
                Journal
                ram
                Revista argentina de microbiología
                Rev. argent. microbiol.
                Asociación Argentina de Microbiología (Ciudad Autónoma de Buenos Aires, , Argentina )
                0325-7541
                1851-7617
                September 2018
                : 50
                : 3
                : 301-310
                Affiliations
                [04] orgnameColegio de Posgraduados-Montecillo orgdiv1Posgrado de Edafología orgdiv2Área de Microbiología México
                [01] Torreón Coahuila orgnameUniversidad Autónoma Agraria Antonio Narro orgdiv1Departamento de Agroecología de la Coordinación de Carreras Agronómicas orgdiv2Unidad Laguna México
                [02] Gómez Palacio Durango orgnameUniversidad Juárez del Estado de Durango orgdiv1Facultad de Ciencias Biológicas México
                [05] Tlaxcala Tlaxcala orgnameUniversidad Autónoma de Tlaxcala orgdiv1Posgrado en Ciencias Biológicas orgdiv2Centro de Investigación en Genética y Ambiente México
                [03] Torreón Coahuila orgnameUniversidad Autónoma Agraria Antonio Narro orgdiv1Departamento de Suelos de la Coordinación de Carreras Agronómicas orgdiv2Unidad Laguna México
                Article
                S0325-75412018000300013
                10.1016/j.ram.2017.07.007
                8694b300-a0a5-4ec3-bd65-742ec228bb73

                This work is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License.

                History
                : 18 January 2017
                : 21 July 2017
                Page count
                Figures: 0, Tables: 0, Equations: 0, References: 50, Pages: 10
                Product

                SciELO Argentina

                Categories
                Agentes Antimicrobianos

                Comunidad de HMA,Glomeromycota,Desierto Chihuahuense,Colonización micorrícica,Larrea tridentata,Parámetros ecológicos,Chihuahuan Desert,Mycorrhizal colonization,AMF community,Ecological parameters

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