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Abstract:

Bromus setifolius Presl., a native perennial grass, is widely spread in the harsh environment of Patagonia, Argentina. This grass can be associated with Neotyphodium Glenn, Bacon et Hanlin endophytes which are related to aerial tissues of these plants and never show external signs of infection. Endophyte presence of certain grasses improves abiotic and biotic stress resistance, productivity or reproduction in their hosts. To compare and contrast natural populations of B. setifolius differing in endophyte infection diaspore weight of seven populations was registered. In addition, emergence and growth parameters of seedlings, dry weight, leaf length and mortality rate were measured. For this purpose, two independents assays were conducted under controlled environmental conditions, using an infected (E+) and an uninfected (E-) population in each one. Most of the analysed parameters differed between E+ and E- populations, being significantly greater in E+ populations. Populations with percentage of endophyte infection between 0% and 100% presented intermediate mean diaspore weight. These results could suggest an adaptive advantage of infected plants as a consequence of endophyte presence.

Registro:

Documento: Artículo
Título:Comparative study of growth parameters on diaspores and seedlings between populations of Bromus setifolius from Patagonia, differing in Neotyphodium endophyte infection
Autor:Novas, M.V.; Gentile, A.; Cabral, D.
Filiación:Lab. de Micología., PRHIDEB-CONICET, Dpto. Biodiversidad y Biol. Exp, Fac. de Cs. Exactas y Naturales, Universidad de Buenos Aires, Cdad. Universitaria, Pab. II, 4° piso, Buenos Aires, Argentina
Palabras clave:Bromus setifolius; Diaspores; Dry weight; Emergence; Leaf length; Neotyphodium; Seedlings; emergence; endophyte; grass; growth; host-symbiont interaction; mortality; propagule; seedling establishment; Argentina; Patagonia; South America; Bromus; Bromus setifolius; Neotyphodium; Neotyphodium; Poaceae
Año:2003
Volumen:198
Número:6
Página de inicio:421
Página de fin:426
DOI: http://dx.doi.org/10.1078/0367-2530-00115
Título revista:Flora
Título revista abreviado:Flora
ISSN:03672530
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03672530_v198_n6_p421_Novas

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Citas:

---------- APA ----------
Novas, M.V., Gentile, A. & Cabral, D. (2003) . Comparative study of growth parameters on diaspores and seedlings between populations of Bromus setifolius from Patagonia, differing in Neotyphodium endophyte infection. Flora, 198(6), 421-426.
http://dx.doi.org/10.1078/0367-2530-00115
---------- CHICAGO ----------
Novas, M.V., Gentile, A., Cabral, D. "Comparative study of growth parameters on diaspores and seedlings between populations of Bromus setifolius from Patagonia, differing in Neotyphodium endophyte infection" . Flora 198, no. 6 (2003) : 421-426.
http://dx.doi.org/10.1078/0367-2530-00115
---------- MLA ----------
Novas, M.V., Gentile, A., Cabral, D. "Comparative study of growth parameters on diaspores and seedlings between populations of Bromus setifolius from Patagonia, differing in Neotyphodium endophyte infection" . Flora, vol. 198, no. 6, 2003, pp. 421-426.
http://dx.doi.org/10.1078/0367-2530-00115
---------- VANCOUVER ----------
Novas, M.V., Gentile, A., Cabral, D. Comparative study of growth parameters on diaspores and seedlings between populations of Bromus setifolius from Patagonia, differing in Neotyphodium endophyte infection. Flora. 2003;198(6):421-426.
http://dx.doi.org/10.1078/0367-2530-00115