Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses
The epichloë endophytes are systemic, constitutive, and often vertically transmitted fungal symbionts of grass species in subfamily Poöideae. Prior studies indicate that several asexual epichloë endophytes (Neotyphodium species) have evolved directly from sexual (Epichloë) species, whereas others ev...
Guardado en:
| Publicado: |
2005
|
|---|---|
| Materias: | |
| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10557903_v35_n1_p196_Gentile http://hdl.handle.net/20.500.12110/paper_10557903_v35_n1_p196_Gentile |
| Aporte de: |
| id |
paper:paper_10557903_v35_n1_p196_Gentile |
|---|---|
| record_format |
dspace |
| spelling |
paper:paper_10557903_v35_n1_p196_Gentile2023-06-08T16:03:14Z Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses Endophyte phylogeny Epichloë Hybrid fungi Neotyphodium Poaceae Argentina (fish) Epichloe Epichloe Epichloe festucae Epichloe festucae Epichloe typhina Epichloe typhina Fungi Neotyphodium Neotyphodium Poaceae Pooideae The epichloë endophytes are systemic, constitutive, and often vertically transmitted fungal symbionts of grass species in subfamily Poöideae. Prior studies indicate that several asexual epichloë endophytes (Neotyphodium species) have evolved directly from sexual (Epichloë) species, whereas others evolved by hybridization between two or more endophyte species. In this paper, we investigate the phylogenies of 27 Neotyphodium spp. isolates from 10 native grass species (in 4 tribes) in 22 populations throughout Argentina. Relationships among these fungi and a worldwide collection of epichloë endophytes were estimated by phylogenetic analysis of sequences from variable portions (mainly introns) of genes for β-tubulin (tub2) and translation elongation factor 1-α (tef1). Most of the Argentine endophyte isolates were interspecific hybrids of Epichloë festucae and E. typhina. Only one isolate was a hybrid of a different ancestry, and three isolates were apparently non-hybrid endophytes. These results indicate that interspecific hybridization, which promotes genetic variation, was common during the evolution of the endophytes of Argentine grasses. © 2005 Elsevier Inc. All rights reserved. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10557903_v35_n1_p196_Gentile http://hdl.handle.net/20.500.12110/paper_10557903_v35_n1_p196_Gentile |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Endophyte phylogeny Epichloë Hybrid fungi Neotyphodium Poaceae Argentina (fish) Epichloe Epichloe Epichloe festucae Epichloe festucae Epichloe typhina Epichloe typhina Fungi Neotyphodium Neotyphodium Poaceae Pooideae |
| spellingShingle |
Endophyte phylogeny Epichloë Hybrid fungi Neotyphodium Poaceae Argentina (fish) Epichloe Epichloe Epichloe festucae Epichloe festucae Epichloe typhina Epichloe typhina Fungi Neotyphodium Neotyphodium Poaceae Pooideae Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
| topic_facet |
Endophyte phylogeny Epichloë Hybrid fungi Neotyphodium Poaceae Argentina (fish) Epichloe Epichloe Epichloe festucae Epichloe festucae Epichloe typhina Epichloe typhina Fungi Neotyphodium Neotyphodium Poaceae Pooideae |
| description |
The epichloë endophytes are systemic, constitutive, and often vertically transmitted fungal symbionts of grass species in subfamily Poöideae. Prior studies indicate that several asexual epichloë endophytes (Neotyphodium species) have evolved directly from sexual (Epichloë) species, whereas others evolved by hybridization between two or more endophyte species. In this paper, we investigate the phylogenies of 27 Neotyphodium spp. isolates from 10 native grass species (in 4 tribes) in 22 populations throughout Argentina. Relationships among these fungi and a worldwide collection of epichloë endophytes were estimated by phylogenetic analysis of sequences from variable portions (mainly introns) of genes for β-tubulin (tub2) and translation elongation factor 1-α (tef1). Most of the Argentine endophyte isolates were interspecific hybrids of Epichloë festucae and E. typhina. Only one isolate was a hybrid of a different ancestry, and three isolates were apparently non-hybrid endophytes. These results indicate that interspecific hybridization, which promotes genetic variation, was common during the evolution of the endophytes of Argentine grasses. © 2005 Elsevier Inc. All rights reserved. |
| title |
Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
| title_short |
Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
| title_full |
Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
| title_fullStr |
Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
| title_full_unstemmed |
Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
| title_sort |
origin, divergence, and phylogeny of epichloë endophytes of native argentine grasses |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10557903_v35_n1_p196_Gentile http://hdl.handle.net/20.500.12110/paper_10557903_v35_n1_p196_Gentile |
| _version_ |
1768542468544921600 |