Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass
Background and aims: Plants often establish multiple simultaneous symbiotic associations with different micro-organisms; however, the way in which each symbiont affects the other symbionts and the effects of these multiple interactions on plant performance are not well understood. The aim of this st...
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2016
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paper:paper_0032079X_v405_n1-2_p279_Vignale2023-06-08T14:59:57Z Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass Iannone, Leopoldo Javier Novas, Maria Victoria Bromus auleticus Epichloë pampeana Epichloë tembladerae Field experiment Plant-microbe interactions Symbiosis arbuscular mycorrhiza biomass colonization endophyte experimental study field method grass plant-insect interaction soil fertility symbiont symbiosis Bromus Fungi Poaceae Background and aims: Plants often establish multiple simultaneous symbiotic associations with different micro-organisms; however, the way in which each symbiont affects the other symbionts and the effects of these multiple interactions on plant performance are not well understood. The aim of this study was to evaluate how two different asexual Epichloë species modulate the establishment of arbuscular mycorrhizal fungi (AMF) in a wild forage grass under different soil fertilization levels. Methods: We performed a completely randomized 12-month-long field experiment to evaluate the effect of two B. auleticus-endophyte ecotypes and two soil fertilization levels on the colonization of AMF, in seedlings and adult plants. Plant biomass and reproductive tillers production were also measured. Results: The symbiosis, measured as the total extent of AM fungal colonization and frequency of arbuscules was significantly higher in Epichloë-infected plants and was not affected by fertilization either in seedlings or in adult plants. Plant biomass was increased by fertilization but no differences were observed due to the endophytic status. However, E+ plants produced more panicles than their E− counterparts. Conclusions: Our findings strongly support the hypothesis of positive association between Epichloë endophytes and AMF in wild grasses, making this model important for agronomic improvement. © 2015, Springer International Publishing Switzerland. Fil:Iannone, L.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Novas, M.V. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2016 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0032079X_v405_n1-2_p279_Vignale http://hdl.handle.net/20.500.12110/paper_0032079X_v405_n1-2_p279_Vignale |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Bromus auleticus Epichloë pampeana Epichloë tembladerae Field experiment Plant-microbe interactions Symbiosis arbuscular mycorrhiza biomass colonization endophyte experimental study field method grass plant-insect interaction soil fertility symbiont symbiosis Bromus Fungi Poaceae |
| spellingShingle |
Bromus auleticus Epichloë pampeana Epichloë tembladerae Field experiment Plant-microbe interactions Symbiosis arbuscular mycorrhiza biomass colonization endophyte experimental study field method grass plant-insect interaction soil fertility symbiont symbiosis Bromus Fungi Poaceae Iannone, Leopoldo Javier Novas, Maria Victoria Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| topic_facet |
Bromus auleticus Epichloë pampeana Epichloë tembladerae Field experiment Plant-microbe interactions Symbiosis arbuscular mycorrhiza biomass colonization endophyte experimental study field method grass plant-insect interaction soil fertility symbiont symbiosis Bromus Fungi Poaceae |
| description |
Background and aims: Plants often establish multiple simultaneous symbiotic associations with different micro-organisms; however, the way in which each symbiont affects the other symbionts and the effects of these multiple interactions on plant performance are not well understood. The aim of this study was to evaluate how two different asexual Epichloë species modulate the establishment of arbuscular mycorrhizal fungi (AMF) in a wild forage grass under different soil fertilization levels. Methods: We performed a completely randomized 12-month-long field experiment to evaluate the effect of two B. auleticus-endophyte ecotypes and two soil fertilization levels on the colonization of AMF, in seedlings and adult plants. Plant biomass and reproductive tillers production were also measured. Results: The symbiosis, measured as the total extent of AM fungal colonization and frequency of arbuscules was significantly higher in Epichloë-infected plants and was not affected by fertilization either in seedlings or in adult plants. Plant biomass was increased by fertilization but no differences were observed due to the endophytic status. However, E+ plants produced more panicles than their E− counterparts. Conclusions: Our findings strongly support the hypothesis of positive association between Epichloë endophytes and AMF in wild grasses, making this model important for agronomic improvement. © 2015, Springer International Publishing Switzerland. |
| author |
Iannone, Leopoldo Javier Novas, Maria Victoria |
| author_facet |
Iannone, Leopoldo Javier Novas, Maria Victoria |
| author_sort |
Iannone, Leopoldo Javier |
| title |
Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| title_short |
Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| title_full |
Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| title_fullStr |
Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| title_full_unstemmed |
Effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| title_sort |
effect of epichloid endophytes and soil fertilization on arbuscular mycorrhizal colonization of a wild grass |
| publishDate |
2016 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0032079X_v405_n1-2_p279_Vignale http://hdl.handle.net/20.500.12110/paper_0032079X_v405_n1-2_p279_Vignale |
| work_keys_str_mv |
AT iannoneleopoldojavier effectofepichloidendophytesandsoilfertilizationonarbuscularmycorrhizalcolonizationofawildgrass AT novasmariavictoria effectofepichloidendophytesandsoilfertilizationonarbuscularmycorrhizalcolonizationofawildgrass |
| _version_ |
1768544769023148032 |