Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina
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 in...
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todo:paper_03345114_v59_n2_p99_Iannone2023-10-03T15:25:21Z Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina Iannone, L.J. Mc Cargo, P.D. Giussani, L.M. Schardl, C.L. 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 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. Fil:Iannone, L.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Giussani, L.M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03345114_v59_n2_p99_Iannone |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 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 |
| topic_facet |
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 |
| description |
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. |
| format |
JOUR |
| author |
Iannone, L.J. Mc Cargo, P.D. Giussani, L.M. Schardl, C.L. |
| author_facet |
Iannone, L.J. Mc Cargo, P.D. Giussani, L.M. Schardl, C.L. |
| author_sort |
Iannone, L.J. |
| title |
Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina |
| title_short |
Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina |
| title_full |
Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina |
| title_fullStr |
Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina |
| title_full_unstemmed |
Geographic distribution patterns of vertically transmitted endophytes in two native grasses in Argentina |
| title_sort |
geographic distribution patterns of vertically transmitted endophytes in two native grasses in argentina |
| url |
http://hdl.handle.net/20.500.12110/paper_03345114_v59_n2_p99_Iannone |
| work_keys_str_mv |
AT iannonelj geographicdistributionpatternsofverticallytransmittedendophytesintwonativegrassesinargentina AT mccargopd geographicdistributionpatternsofverticallytransmittedendophytesintwonativegrassesinargentina AT giussanilm geographicdistributionpatternsofverticallytransmittedendophytesintwonativegrassesinargentina AT schardlcl geographicdistributionpatternsofverticallytransmittedendophytesintwonativegrassesinargentina |
| _version_ |
1807320523472896000 |