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Functional ecology of soil microbial communities along a glacier forefield in Tierra del Fuego (Chile)
Fernández Martínez, Miguel A; Pointing, Stephen B; Pérez Ortega, Sergio; Arróniz Crespo, María; Allan Green, TG; Rozzi, Ricardo; Sancho, Leopoldo G; Ríos, Asunción de los.
Afiliação
  • Fernández Martínez, Miguel A; Consejo Superior de Investigaciones Científicas (CSIC). Museo Nacional de Ciencias Naturales. Department of Biochemistry and Microbial Ecology. Madrid. Spain
  • Pointing, Stephen B; Auckland University of Technology. Institute for Applied Ecology. Auckland. New Zealand
  • Pérez Ortega, Sergio; Consejo Superior de Investigaciones Científicas (CSIC). Real Jardín Botánico. Madrid. Spain
  • Arróniz Crespo, María; Universidad Politécnica de Madrid. Department of Chemistry and Tecnology of Food. Madrid. Spain
  • Allan Green, TG; Universidad Complutense de Madrid. Department of Plant Biology II. Madrid. Spain
  • Rozzi, Ricardo; University of Magallanes. Institute of Ecology and Biodiversity. Puerto Williams. Chile
  • Sancho, Leopoldo G; Universidad Complutense de Madrid. Department of Plant Biology II. Madrid. Spain
  • Ríos, Asunción de los; Consejo Superior de Investigaciones Científicas (CSIC). Museo Nacional de Ciencias Naturales. Department of Biochemistry and Microbial Ecology. Madrid. Spain
Int. microbiol ; 19(3): 161-173, sept. 2016. ilus, tab, graf
Artigo em Inglês | IBECS | ID: ibc-162893
Biblioteca responsável: ES1.1
Localização: BNCS
ABSTRACT
A previously established chronosequence from Pia Glacier forefield in Tierra del Fuego (Chile) containing soils of different ages (from bare soils to forest ones) is analyzed. We used this chronosequence as framework to postulate that microbial successional development would be accompanied by changes in functionality. To test this, the GeoChip functional microarray was used to identify diversity of genes involved in microbial carbon and nitrogen metabolism, as well as other genes related to microbial stress response and biotic interactions. Changes in putative functionality generally reflected succession-related taxonomic composition of soil microbiota. Major shifts in carbon fixation and catabolism were observed, as well as major changes in nitrogen metabolism. At initial microbial dominated succession stages, microorganisms could be mainly involved in pathways that help to increase nutrient availability, while more complex microbial transformations such as denitrification and methanogenesis, and later degradation of complex organic substrates, could be more prevalent at vegetated successional states. Shifts in virus populations broadly reflected changes in microbial diversity. Conversely, stress response pathways appeared relatively well conserved for communities along the entire chronosequence. We conclude that nutrient utilization is likely the major driver of microbial succession in these soils (AU)
RESUMEN
No disponible
Assuntos

Texto completo: Disponível Coleções: Bases de dados nacionais / Espanha Base de dados: IBECS Assunto principal: Microbiologia do Solo / Ecossistema Glacial País/Região como assunto: América do Sul / Chile Idioma: Inglês Revista: Int. microbiol Ano de publicação: 2016 Tipo de documento: Artigo Instituição/País de afiliação: Auckland University of Technology/New Zealand / Consejo Superior de Investigaciones Científicas (CSIC)/Spain / Universidad Complutense de Madrid/Spain / Universidad Politécnica de Madrid/Spain / University of Magallanes/Chile

Texto completo: Disponível Coleções: Bases de dados nacionais / Espanha Base de dados: IBECS Assunto principal: Microbiologia do Solo / Ecossistema Glacial País/Região como assunto: América do Sul / Chile Idioma: Inglês Revista: Int. microbiol Ano de publicação: 2016 Tipo de documento: Artigo Instituição/País de afiliação: Auckland University of Technology/New Zealand / Consejo Superior de Investigaciones Científicas (CSIC)/Spain / Universidad Complutense de Madrid/Spain / Universidad Politécnica de Madrid/Spain / University of Magallanes/Chile
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