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Abstract:

Cool-season grasses are frequently infected by Neotyphodium endophytes and this association is often considered as a mutualistic symbiosis. We examined the incidence of Neotyphodium in populations of Bromus setifolius, Phleum alpinum and Poa spiciformis, native and wide-spread grasses from south Patagonia, Argentina. The incidence of 36 populations of Bromus setifolius was studied in association with climatic and soil variables. 31 populations of Ph. alpinum were sampled in five different plant communities. Seventeen populations of P. spiciformis were sampled in three different plant communities. The association between incidence and climatic variables in Ph. alpinum and between incidence and soil fertility in P. spiciformis was investigated. In B. setifolius endophyte incidence was positively correlated with annual average rainfall contrary to the results found in Ph. alpinum. All the populations of P. spiciformis were infected by endophytes and the incidence was associated with plant community. The Neotyphodium-grass interaction is variable in natural populations, supporting the increasing evidence that the Neotyphodium-host interaction depends, in many cases, on the environmental conditions. Field observations suggest that in detrimental low growth conditions the association is not favoured, leading to a decrease in the endophyte frequency of infection or even to the complete loss of the association. © 2007 Federation of European Microbiological Societies.

Registro:

Documento: Artículo
Título:Environmental effects on grass-endophyte associations in the harsh conditions of south Patagonia
Autor:Victoria Novas, M.; Collantes, M.; Cabral, D.
Filiación:Lab. De Micología., Departamento de Biodiversidad Y Biología Experimental (DBBE), Universidad de Buenos Aires, Buenos Aires, Argentina
Museo Argentino de Ciencias Naturales (MACN), Buenos Aires, Argentina
Lab. de Micología., Departamento de Biodiversidad Y Biología Experimental (DBBE), Cdad. Universitaria, CP C1428EHA Buenos Aires, Argentina
Palabras clave:Bromus setifolius; Endophyte; Native grasses; Neotyphodium; Phleum alpinum; Poa spiciformis; community structure; endophyte; environmental conditions; environmental effect; fungus; grass; growth rate; interspecific interaction; monocotyledon; mutualism; native species; soil fertility; symbiosis; article; bromus setifolius; endophyte; environment; environmental plant disease; fungus; grass; incidence; Neotyphodium; nonhuman; phleum alpinum; poa spiciformis; priority journal; soil fertility; symbiosis; Animals; Ants; Argentina; Ecosystem; Geography; Hypocreales; Poaceae; Soil; Symbiosis; Patagonia; South America; Bromus setifolius; Neotyphodium; Phleum alpinum; Poa; Poaceae
Año:2007
Volumen:61
Número:1
Página de inicio:164
Página de fin:173
DOI: http://dx.doi.org/10.1111/j.1574-6941.2007.00319.x
Título revista:FEMS Microbiology Ecology
Título revista abreviado:FEMS Microbiol. Ecol.
ISSN:01686496
CODEN:FMECE
CAS:Soil
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01686496_v61_n1_p164_VictoriaNovas

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Citas:

---------- APA ----------
Victoria Novas, M., Collantes, M. & Cabral, D. (2007) . Environmental effects on grass-endophyte associations in the harsh conditions of south Patagonia. FEMS Microbiology Ecology, 61(1), 164-173.
http://dx.doi.org/10.1111/j.1574-6941.2007.00319.x
---------- CHICAGO ----------
Victoria Novas, M., Collantes, M., Cabral, D. "Environmental effects on grass-endophyte associations in the harsh conditions of south Patagonia" . FEMS Microbiology Ecology 61, no. 1 (2007) : 164-173.
http://dx.doi.org/10.1111/j.1574-6941.2007.00319.x
---------- MLA ----------
Victoria Novas, M., Collantes, M., Cabral, D. "Environmental effects on grass-endophyte associations in the harsh conditions of south Patagonia" . FEMS Microbiology Ecology, vol. 61, no. 1, 2007, pp. 164-173.
http://dx.doi.org/10.1111/j.1574-6941.2007.00319.x
---------- VANCOUVER ----------
Victoria Novas, M., Collantes, M., Cabral, D. Environmental effects on grass-endophyte associations in the harsh conditions of south Patagonia. FEMS Microbiol. Ecol. 2007;61(1):164-173.
http://dx.doi.org/10.1111/j.1574-6941.2007.00319.x