Evidence supporting the occurrence of a new species of endophyte in some South American grasses
Endophytes of several South American grasses were examined. The taxonomic status of endophytes in Festuca argentina, F. hieronymi, Poa huecu, and an unidentified species of Poa is evaluated. On the basis of morphological features, and rDNA and protease gene sequence data, it is proposed that this en...
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Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00275514_v91_n2_p315_Cabrai http://hdl.handle.net/20.500.12110/paper_00275514_v91_n2_p315_Cabrai |
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paper:paper_00275514_v91_n2_p315_Cabrai2023-06-08T14:54:16Z Evidence supporting the occurrence of a new species of endophyte in some South American grasses Cafaro, Matías José Saidman, Beatriz Ofelia Ascomycetes Clavicipitaceae Molecular systematics Protease endophyte enzyme analysis Europe genetic polymorphism isoenzyme morphology North America proteinase ribosomal DNA South America taxonomy toxicity toxin Festuca argentina Festuca hieronymi Neotyphodium Poa hueco Endophytes of several South American grasses were examined. The taxonomic status of endophytes in Festuca argentina, F. hieronymi, Poa huecu, and an unidentified species of Poa is evaluated. On the basis of morphological features, and rDNA and protease gene sequence data, it is proposed that this endophyte is different from several other endophytes examined from North American, South American, and European species of Festuca and Poa. These endophytes, believed responsible for causing the 'tembladera' or 'huecu' toxicosis in animals, have also been reported to produce unique toxins. Isozyme analysis supports the distinctness of these endophytes but also demonstrates variability in populations with respect to gene polymorphisms. Taking all the data into consideration, we propose to establish a new endophyte species Neotyphodium tembladerae which includes endophytes found in multiple grass species. We suggest the use of a phylogenetic species concept to define species of Neotyphodium. Fil:Cafaro, M.J. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Saidman, B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 1999 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00275514_v91_n2_p315_Cabrai http://hdl.handle.net/20.500.12110/paper_00275514_v91_n2_p315_Cabrai |
institution |
Universidad de Buenos Aires |
institution_str |
I-28 |
repository_str |
R-134 |
collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
topic |
Ascomycetes Clavicipitaceae Molecular systematics Protease endophyte enzyme analysis Europe genetic polymorphism isoenzyme morphology North America proteinase ribosomal DNA South America taxonomy toxicity toxin Festuca argentina Festuca hieronymi Neotyphodium Poa hueco |
spellingShingle |
Ascomycetes Clavicipitaceae Molecular systematics Protease endophyte enzyme analysis Europe genetic polymorphism isoenzyme morphology North America proteinase ribosomal DNA South America taxonomy toxicity toxin Festuca argentina Festuca hieronymi Neotyphodium Poa hueco Cafaro, Matías José Saidman, Beatriz Ofelia Evidence supporting the occurrence of a new species of endophyte in some South American grasses |
topic_facet |
Ascomycetes Clavicipitaceae Molecular systematics Protease endophyte enzyme analysis Europe genetic polymorphism isoenzyme morphology North America proteinase ribosomal DNA South America taxonomy toxicity toxin Festuca argentina Festuca hieronymi Neotyphodium Poa hueco |
description |
Endophytes of several South American grasses were examined. The taxonomic status of endophytes in Festuca argentina, F. hieronymi, Poa huecu, and an unidentified species of Poa is evaluated. On the basis of morphological features, and rDNA and protease gene sequence data, it is proposed that this endophyte is different from several other endophytes examined from North American, South American, and European species of Festuca and Poa. These endophytes, believed responsible for causing the 'tembladera' or 'huecu' toxicosis in animals, have also been reported to produce unique toxins. Isozyme analysis supports the distinctness of these endophytes but also demonstrates variability in populations with respect to gene polymorphisms. Taking all the data into consideration, we propose to establish a new endophyte species Neotyphodium tembladerae which includes endophytes found in multiple grass species. We suggest the use of a phylogenetic species concept to define species of Neotyphodium. |
author |
Cafaro, Matías José Saidman, Beatriz Ofelia |
author_facet |
Cafaro, Matías José Saidman, Beatriz Ofelia |
author_sort |
Cafaro, Matías José |
title |
Evidence supporting the occurrence of a new species of endophyte in some South American grasses |
title_short |
Evidence supporting the occurrence of a new species of endophyte in some South American grasses |
title_full |
Evidence supporting the occurrence of a new species of endophyte in some South American grasses |
title_fullStr |
Evidence supporting the occurrence of a new species of endophyte in some South American grasses |
title_full_unstemmed |
Evidence supporting the occurrence of a new species of endophyte in some South American grasses |
title_sort |
evidence supporting the occurrence of a new species of endophyte in some south american grasses |
publishDate |
1999 |
url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00275514_v91_n2_p315_Cabrai http://hdl.handle.net/20.500.12110/paper_00275514_v91_n2_p315_Cabrai |
work_keys_str_mv |
AT cafaromatiasjose evidencesupportingtheoccurrenceofanewspeciesofendophyteinsomesouthamericangrasses AT saidmanbeatrizofelia evidencesupportingtheoccurrenceofanewspeciesofendophyteinsomesouthamericangrasses |
_version_ |
1768544946532384768 |