Artículo

Cavagnaro, R.A.; Ripoll, M.P.; Godeas, A.; Oesterheld, M.; Grimoldi, A.A."Patchiness of grass mycorrhizal colonization in the Patagonian steppe" (2017) Journal of Arid Environments. 137:46-49
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Abstract:

In arid and semi-arid ecosystems vegetation is often arranged in high-density patches imbedded in an extensive matrix dominated by bare soil. This study explores the importance of vegetation pattern in the relationship between grasses and arbuscular mycorrhizal fungi (AMF). In shrub-dominated and bare-soil dominated patches of the Patagonian steppe, we quantified AMF colonization in the dominant grasses Bromus pictus, Poa ligularis, Pappostipa speciosa and Pappostipa humilis. Additionally, in the shrub-dominated patches, AMF colonization was measured in roots under the shrub canopy and off the shrub canopy. Soils in each patch type were also characterized. B. pictus showed the highest AMF colonization, followed by P. speciosa, P. humilis and P. ligularis. The shrub patch resulted to be a fertility hotspot for biological activity and soil attributes. Grass plants in the shrub patches showed in general the highest rates of AMF colonization. Conversely, we did not find consistent differences between the two types of microsites within the shrub patch. Shrub patches may be functioning as refuges for biological activity that preserve the occurrence of mycorrhizal symbiosis of grass species and alter nutrient dynamics. © 2016 Elsevier Ltd

Registro:

Documento: Artículo
Título:Patchiness of grass mycorrhizal colonization in the Patagonian steppe
Autor:Cavagnaro, R.A.; Ripoll, M.P.; Godeas, A.; Oesterheld, M.; Grimoldi, A.A.
Filiación:Cátedra de Botánica Sistemática, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina
Cátedra de Ecología, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina
Cátedra de Forrajicultura, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina
IFEVA, Facultad de Agronomía, Universidad de Buenos Aires, CONICET, Av. San Martín 4453 (C1417DSE), Buenos Aires, Argentina
Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires, Pabellón II, 4to Piso (C1428EHA) Ciudad Universitaria, Buenos Aires, Argentina
Palabras clave:Arbuscular mycorrhizal fungi (AMF); Fertility hotspot; Grazing; Patch structure; Symbiosis; Tussock grasses; arbuscular mycorrhiza; bare soil; bioactivity; colonization; fungus; grass; grazing; patchiness; shrub; steppe; symbiosis; vegetation structure; Patagonia; Bromus pictus; Fungi; Poa ligularis; Poaceae
Año:2017
Volumen:137
Página de inicio:46
Página de fin:49
DOI: http://dx.doi.org/10.1016/j.jaridenv.2016.10.013
Handle:http://hdl.handle.net/20.500.12110/paper_01401963_v137_n_p46_Cavagnaro
Título revista:Journal of Arid Environments
Título revista abreviado:J. Arid Environ.
ISSN:01401963
CODEN:JAEND
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_01401963_v137_n_p46_Cavagnaro

Referencias:

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Citas:

---------- APA ----------
Cavagnaro, R.A., Ripoll, M.P., Godeas, A., Oesterheld, M. & Grimoldi, A.A. (2017) . Patchiness of grass mycorrhizal colonization in the Patagonian steppe. Journal of Arid Environments, 137, 46-49.
http://dx.doi.org/10.1016/j.jaridenv.2016.10.013
---------- CHICAGO ----------
Cavagnaro, R.A., Ripoll, M.P., Godeas, A., Oesterheld, M., Grimoldi, A.A. "Patchiness of grass mycorrhizal colonization in the Patagonian steppe" . Journal of Arid Environments 137 (2017) : 46-49.
http://dx.doi.org/10.1016/j.jaridenv.2016.10.013
---------- MLA ----------
Cavagnaro, R.A., Ripoll, M.P., Godeas, A., Oesterheld, M., Grimoldi, A.A. "Patchiness of grass mycorrhizal colonization in the Patagonian steppe" . Journal of Arid Environments, vol. 137, 2017, pp. 46-49.
http://dx.doi.org/10.1016/j.jaridenv.2016.10.013
---------- VANCOUVER ----------
Cavagnaro, R.A., Ripoll, M.P., Godeas, A., Oesterheld, M., Grimoldi, A.A. Patchiness of grass mycorrhizal colonization in the Patagonian steppe. J. Arid Environ. 2017;137:46-49.
http://dx.doi.org/10.1016/j.jaridenv.2016.10.013