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Abstract:

The incidence of epichloid endophytes in populations of wild grasses is usually variable, and the knowledge about distribution patterns and how environmental factors affect such an incidence is limited. Here we performed a broad scale survey data to study whether the distribution patterns and the incidence of vertically-transmitted endophytes in populations of two native grasses from South-America, Poa lanuginosa Poir. and Poa bonariensis (Lam.) Kunth., are associated with environmental characteristics. We also characterized the endophytes from different populations to establish if the genotype of the endophytes is also correlated with environmental variables. The incidence of endophytes ranged from 0 to 100 % in both host species. In P. lanuginosa, endophytes were only found in populations on sandy coastal dunes and their incidence was positively associated with winter regime rainfall and soil water availability in the growing season. In P. bonariensis, endophytes were only found in populations in xerophytic forests and their incidence was highly associated with plant community. The distributions of infested populations suggested that the endophytes are not found in those areas with the most favorable or most stressing growth conditions accordingly to climatic or edaphical characteristics. Only the vertically transmitted hybrid endophyte species Neotyphodium tembladerae was detected in both host species. Under the hypothesis of vertical transmission, these results suggested that the endophyte should have been lost in endophyte free populations but is maintained in populations established in environments presenting moderate stress as salinity or short drought periods. © Springer Science+Business Media Dordrecht 2012.

Registro:

Documento: Artículo
Título:Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina
Autor:Iannone, L.J.; Mc Cargo, P.D.; Giussani, L.M.; Schardl, C.L.
Filiación:Departamento de Biodiversidad y Biología Experimental, Facultad de Ciencias Exactas y Naturales, Universidad de Buenos Aires and PROPLAME-PRHIDEB-CONICET, Buenos Aires, Argentina
Departamento de Ingeniería Química, Facultad de Ingeniería, Universidad de Buenos Aires, Av. Intendente Güiraldes, 2160. Pab. Industrias, Cdad. Universitaria, C1428EHA Buenos Aires, Argentina
Instituto de Botánica Darwinion-CONICET, Buenos Aires, Argentina
Department of Plant Pathology, University of Kentucky, Lexington, KY, United States
Palabras clave:Distribution; Endophytes; Epichloae; Incidence; Neotyphodium; Poa; drought; endophyte; environmental factor; grass; growing season; plant community; population distribution; rainfall; salinity; soil water; water availability; wild population; winter; Argentina; Neotyphodium; Neotyphodium tembladerae; Poa; Poa lanuginosa; Poaceae
Año:2013
Volumen:59
Número:2
Página de inicio:99
Página de fin:110
DOI: http://dx.doi.org/10.1007/s13199-012-0214-y
Título revista:Symbiosis
Título revista abreviado:Symbiosis
ISSN:03345114
CODEN:SYMBE
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_03345114_v59_n2_p99_Iannone

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Citas:

---------- APA ----------
Iannone, L.J., Mc Cargo, P.D., Giussani, L.M. & Schardl, C.L. (2013) . Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina. Symbiosis, 59(2), 99-110.
http://dx.doi.org/10.1007/s13199-012-0214-y
---------- CHICAGO ----------
Iannone, L.J., Mc Cargo, P.D., Giussani, L.M., Schardl, C.L. "Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina" . Symbiosis 59, no. 2 (2013) : 99-110.
http://dx.doi.org/10.1007/s13199-012-0214-y
---------- MLA ----------
Iannone, L.J., Mc Cargo, P.D., Giussani, L.M., Schardl, C.L. "Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina" . Symbiosis, vol. 59, no. 2, 2013, pp. 99-110.
http://dx.doi.org/10.1007/s13199-012-0214-y
---------- VANCOUVER ----------
Iannone, L.J., Mc Cargo, P.D., Giussani, L.M., Schardl, C.L. Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina. Symbiosis. 2013;59(2):99-110.
http://dx.doi.org/10.1007/s13199-012-0214-y