Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands
Exploring the regional pattern of variation in traits driven by symbiotic interactions may provide insights to understand the evolutionary processes that operate over plant populations. Polyploidy, which is associated with fitness improvement, is expected to increase with latitude and altitude. Howe...
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ftunivturku:oai:www.utupub.fi:10024/160357 2023-05-15T16:10:57+02:00 Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands P. E. Gundel I. Zabalgogeazcoa M. Helander H. Väre K. Saikkonen S. Dirihan ekologia ja evoluutiobiologia, Ecology and Evolutionary Biology biologian laitoksen yhteiset, Department of Biology 2606400 2606402 2022-10-28T12:33:16Z 1683 1691 https://www.utupub.fi/handle/10024/160357 unknown SPRINGER WIEN 300 10.1007/s00606-014-0994-z Plant Systematics and Evolution 7 https://www.utupub.fi/handle/10024/160357 URN:NBN:fi-fe2021042715439 0378-2697 2022 ftunivturku 2022-11-03T00:00:02Z Exploring the regional pattern of variation in traits driven by symbiotic interactions may provide insights to understand the evolutionary processes that operate over plant populations. Polyploidy, which is associated with fitness improvement, is expected to increase with latitude and altitude. However, it has never been explored in relation with the occurrence of epichloid fungal endophytes in plants. Both, variation in ploidy level and in the incidence of fungal endophytes, are known to occur in species of fine fescues. Here, we surveyed the occurrence of systemic fungal endophytes in natural Festuca vivipara populations in North European islands. In addition, we identified the fungal species associated with this grass and determined the predominant ploidy level for each population. Endophytes were found in four of six, two of three, and one of three populations for Faroe Islands, Iceland and Great Britain, respectively. With an average low incidence level of 15 % in infected populations, there was no relationship between infection level and either latitude or altitude. The phylogenetic analysis based on sequences ITS and the tub2 genes, supports that the endophytic species is EpichloA << festucae, the same as in other fine fescues. We found no variation in ploidy level as all the plants were tetraploid (4X) with 28 chromosomes, a pattern which contrasts with the variation reported in previous antecedents. Our results suggest that apart from low and variable benefits of the endophyte to the plants, there would be a complex dynamics between epichloid endophytes and species of the fine fescue complex which merits further studies. Other/Unknown Material Faroe Islands Iceland University of Turku: UTUPub Faroe Islands |
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University of Turku: UTUPub |
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Exploring the regional pattern of variation in traits driven by symbiotic interactions may provide insights to understand the evolutionary processes that operate over plant populations. Polyploidy, which is associated with fitness improvement, is expected to increase with latitude and altitude. However, it has never been explored in relation with the occurrence of epichloid fungal endophytes in plants. Both, variation in ploidy level and in the incidence of fungal endophytes, are known to occur in species of fine fescues. Here, we surveyed the occurrence of systemic fungal endophytes in natural Festuca vivipara populations in North European islands. In addition, we identified the fungal species associated with this grass and determined the predominant ploidy level for each population. Endophytes were found in four of six, two of three, and one of three populations for Faroe Islands, Iceland and Great Britain, respectively. With an average low incidence level of 15 % in infected populations, there was no relationship between infection level and either latitude or altitude. The phylogenetic analysis based on sequences ITS and the tub2 genes, supports that the endophytic species is EpichloA << festucae, the same as in other fine fescues. We found no variation in ploidy level as all the plants were tetraploid (4X) with 28 chromosomes, a pattern which contrasts with the variation reported in previous antecedents. Our results suggest that apart from low and variable benefits of the endophyte to the plants, there would be a complex dynamics between epichloid endophytes and species of the fine fescue complex which merits further studies. |
author2 |
ekologia ja evoluutiobiologia, Ecology and Evolutionary Biology biologian laitoksen yhteiset, Department of Biology 2606400 2606402 |
author |
P. E. Gundel I. Zabalgogeazcoa M. Helander H. Väre K. Saikkonen S. Dirihan |
spellingShingle |
P. E. Gundel I. Zabalgogeazcoa M. Helander H. Väre K. Saikkonen S. Dirihan Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands |
author_facet |
P. E. Gundel I. Zabalgogeazcoa M. Helander H. Väre K. Saikkonen S. Dirihan |
author_sort |
P. E. Gundel |
title |
Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands |
title_short |
Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands |
title_full |
Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands |
title_fullStr |
Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands |
title_full_unstemmed |
Systemic fungal endophytes and ploidy level in Festuca vivipara populations in North European Islands |
title_sort |
systemic fungal endophytes and ploidy level in festuca vivipara populations in north european islands |
publisher |
SPRINGER WIEN |
publishDate |
2022 |
url |
https://www.utupub.fi/handle/10024/160357 |
geographic |
Faroe Islands |
geographic_facet |
Faroe Islands |
genre |
Faroe Islands Iceland |
genre_facet |
Faroe Islands Iceland |
op_relation |
300 10.1007/s00606-014-0994-z Plant Systematics and Evolution 7 https://www.utupub.fi/handle/10024/160357 URN:NBN:fi-fe2021042715439 0378-2697 |
_version_ |
1765996074424598528 |