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Abstract:

Asexual Epichloë endophytes establish mutualistic symbioses with grasses, improve fitness of their hosts and modify the surrounding environment. To test the hypothesis that this symbiotic association increases the abundance and diversity of phosphate-solubilizing fungi (PSF), a pot experiment was conducted combining two endophytic statuses: Epichloë-infected (E+) and non-infected (E-) Bromus auleticus plants, and two soil types collected from agricultural (A) and non-agricultural (NA) fields. Soil fungi were isolated at the beginning of the experiment and 12 months after the introduction of B. auleticus, and tested for their inorganic P (Pi)-solubilizing capability. Arbuscular mycorrhizal colonization in B. auleticus roots of E+ and E- plants was also analyzed. PSF abundance was affected by the endophytic status and by the type of soil; the highest value was detected in the E-NA treatment, followed by the E+A treatment. PSF diversity was higher in NA than in A soils and higher in soils treated with E+ than in those treated with E-. Arbuscular mycorrhizal fungi colonization was higher in E+ plants. We hypothesize that the positive association between Epichloë endophytes and mycorrhizal fungi with an increase in the PSF diversity would generate an increase in the phosphorus (P) available to plants. © 2015 Elsevier Ltd and The British Mycological Society.

Registro:

Documento: Artículo
Título:A foliar endophyte increases the diversity of phosphorus-solubilizing rhizospheric fungi and mycorrhizal colonization in the wild grass Bromus auleticus
Autor:Arrieta, A.M.; Iannone, L.J.; Scervino, J.M.; Vignale, M.V.; Novas, M.V.
Filiación:Lab. de Micología, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and PROPLAME-PRHIDEB-CONICET, Cdad. Universitaria,Av. Intendente Guiraldes 2160, Pab. II, Buenos Aires, C1428EHA, Argentina
Lab. de Micología, Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, and PROPLAME-PRHIDEB-CONICET, Argentina
Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Buenos Aires, Argentina
Departamento de Botánica, Centro Regional Universitario Bariloche, INIBIOMA, CONICET - UN Comahue, San Carlos de Bariloche, Provincia de Río Negro, Argentina
Palabras clave:Agriculture; Argentina; Bromus auleticus; Epichloë pampeana; Soil use; Symbiosis
Año:2015
Volumen:17
Página de inicio:146
Página de fin:154
DOI: http://dx.doi.org/10.1016/j.funeco.2015.07.001
Título revista:Fungal Ecology
Título revista abreviado:Fungal Ecol.
ISSN:17545048
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17545048_v17_n_p146_Arrieta

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Citas:

---------- APA ----------
Arrieta, A.M., Iannone, L.J., Scervino, J.M., Vignale, M.V. & Novas, M.V. (2015) . A foliar endophyte increases the diversity of phosphorus-solubilizing rhizospheric fungi and mycorrhizal colonization in the wild grass Bromus auleticus. Fungal Ecology, 17, 146-154.
http://dx.doi.org/10.1016/j.funeco.2015.07.001
---------- CHICAGO ----------
Arrieta, A.M., Iannone, L.J., Scervino, J.M., Vignale, M.V., Novas, M.V. "A foliar endophyte increases the diversity of phosphorus-solubilizing rhizospheric fungi and mycorrhizal colonization in the wild grass Bromus auleticus" . Fungal Ecology 17 (2015) : 146-154.
http://dx.doi.org/10.1016/j.funeco.2015.07.001
---------- MLA ----------
Arrieta, A.M., Iannone, L.J., Scervino, J.M., Vignale, M.V., Novas, M.V. "A foliar endophyte increases the diversity of phosphorus-solubilizing rhizospheric fungi and mycorrhizal colonization in the wild grass Bromus auleticus" . Fungal Ecology, vol. 17, 2015, pp. 146-154.
http://dx.doi.org/10.1016/j.funeco.2015.07.001
---------- VANCOUVER ----------
Arrieta, A.M., Iannone, L.J., Scervino, J.M., Vignale, M.V., Novas, M.V. A foliar endophyte increases the diversity of phosphorus-solubilizing rhizospheric fungi and mycorrhizal colonization in the wild grass Bromus auleticus. Fungal Ecol. 2015;17:146-154.
http://dx.doi.org/10.1016/j.funeco.2015.07.001