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...
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| Veröffentlicht in: | Molecular phylogenetics and evolution 2005-04, Vol.35 (1), p.196-208 |
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| container_title | Molecular phylogenetics and evolution |
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| creator | Gentile, Agustina Rossi, María Susana Cabral, Daniel Craven, Kelly D. Schardl, Christopher L. |
| 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. |
| doi_str_mv | 10.1016/j.ympev.2005.01.008 |
| format | Article |
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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.</description><identifier>ISSN: 1055-7903</identifier><identifier>EISSN: 1095-9513</identifier><identifier>DOI: 10.1016/j.ympev.2005.01.008</identifier><identifier>PMID: 15737591</identifier><language>eng</language><publisher>United States: Elsevier Inc</publisher><subject>Base Sequence ; DNA Primers ; Endophyte phylogeny ; Epichloë ; Genetic Variation ; Hybrid fungi ; Neotyphodium ; Phylogeny ; Poaceae ; Poaceae - classification ; Poaceae - genetics ; Polymerase Chain Reaction</subject><ispartof>Molecular phylogenetics and evolution, 2005-04, Vol.35 (1), p.196-208</ispartof><rights>2005 Elsevier Inc.</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c433t-3c135b4318260e0a149bc8ab6307f024289d57ce5b867720fdfd1e586fb84e473</citedby><cites>FETCH-LOGICAL-c433t-3c135b4318260e0a149bc8ab6307f024289d57ce5b867720fdfd1e586fb84e473</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://dx.doi.org/10.1016/j.ympev.2005.01.008$$EHTML$$P50$$Gelsevier$$H</linktohtml><link.rule.ids>314,776,780,3536,27903,27904,45974</link.rule.ids><backlink>$$Uhttps://www.ncbi.nlm.nih.gov/pubmed/15737591$$D View this record in MEDLINE/PubMed$$Hfree_for_read</backlink></links><search><creatorcontrib>Gentile, Agustina</creatorcontrib><creatorcontrib>Rossi, María Susana</creatorcontrib><creatorcontrib>Cabral, Daniel</creatorcontrib><creatorcontrib>Craven, Kelly D.</creatorcontrib><creatorcontrib>Schardl, Christopher L.</creatorcontrib><title>Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses</title><title>Molecular phylogenetics and evolution</title><addtitle>Mol Phylogenet Evol</addtitle><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.</description><subject>Base Sequence</subject><subject>DNA Primers</subject><subject>Endophyte phylogeny</subject><subject>Epichloë</subject><subject>Genetic Variation</subject><subject>Hybrid fungi</subject><subject>Neotyphodium</subject><subject>Phylogeny</subject><subject>Poaceae</subject><subject>Poaceae - classification</subject><subject>Poaceae - genetics</subject><subject>Polymerase Chain Reaction</subject><issn>1055-7903</issn><issn>1095-9513</issn><fulltext>true</fulltext><rsrctype>article</rsrctype><creationdate>2005</creationdate><recordtype>article</recordtype><sourceid>EIF</sourceid><recordid>eNqFkMtKxDAUhoMo3p9AkK5c2XpO0zTtwoWINxDc6Dq0yemYodPWpDMwz-Rj-GKmzoA7XSU55_v_wMfYGUKCgPnVPFkvBlolKYBIABOAYocdIpQiLgXy3ekuRCxL4AfsyPs5AKIoxT47QCG5FCUesrcXZ2e2u4yMXZGbUafpMqo6Ew3v67YP73XUNxENVr-3_ddnRJ3pw2okP827agyx6GYKjrajaOYq78mfsL2maj2dbs9j9nZ_93r7GD-_PDzd3jzHOuN8jLlGLuqMY5HmQFBhVta6qOqcg2wgzdKiNEJqEnWRS5lCYxqDJIq8qYuMMsmP2cWmd3D9x5L8qBbWa2rbqqN-6VUuAyRS_i-IsoAsFxBAvgG167131KjB2UXl1gpBTdrVXP1oV5N2BaiC9pA639Yv6wWZ38zWcwCuNwAFGytLTnltJ9nGOtKjMr3984NvLheVNA</recordid><startdate>20050401</startdate><enddate>20050401</enddate><creator>Gentile, Agustina</creator><creator>Rossi, María Susana</creator><creator>Cabral, Daniel</creator><creator>Craven, Kelly D.</creator><creator>Schardl, Christopher L.</creator><general>Elsevier Inc</general><scope>CGR</scope><scope>CUY</scope><scope>CVF</scope><scope>ECM</scope><scope>EIF</scope><scope>NPM</scope><scope>AAYXX</scope><scope>CITATION</scope><scope>8FD</scope><scope>FR3</scope><scope>P64</scope><scope>RC3</scope><scope>7X8</scope></search><sort><creationdate>20050401</creationdate><title>Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses</title><author>Gentile, Agustina ; Rossi, María Susana ; Cabral, Daniel ; Craven, Kelly D. ; Schardl, Christopher L.</author></sort><facets><frbrtype>5</frbrtype><frbrgroupid>cdi_FETCH-LOGICAL-c433t-3c135b4318260e0a149bc8ab6307f024289d57ce5b867720fdfd1e586fb84e473</frbrgroupid><rsrctype>articles</rsrctype><prefilter>articles</prefilter><language>eng</language><creationdate>2005</creationdate><topic>Base Sequence</topic><topic>DNA Primers</topic><topic>Endophyte phylogeny</topic><topic>Epichloë</topic><topic>Genetic Variation</topic><topic>Hybrid fungi</topic><topic>Neotyphodium</topic><topic>Phylogeny</topic><topic>Poaceae</topic><topic>Poaceae - classification</topic><topic>Poaceae - genetics</topic><topic>Polymerase Chain Reaction</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Gentile, Agustina</creatorcontrib><creatorcontrib>Rossi, María Susana</creatorcontrib><creatorcontrib>Cabral, Daniel</creatorcontrib><creatorcontrib>Craven, Kelly D.</creatorcontrib><creatorcontrib>Schardl, Christopher L.</creatorcontrib><collection>Medline</collection><collection>MEDLINE</collection><collection>MEDLINE (Ovid)</collection><collection>MEDLINE</collection><collection>MEDLINE</collection><collection>PubMed</collection><collection>CrossRef</collection><collection>Technology Research Database</collection><collection>Engineering Research Database</collection><collection>Biotechnology and BioEngineering Abstracts</collection><collection>Genetics Abstracts</collection><collection>MEDLINE - Academic</collection><jtitle>Molecular phylogenetics and evolution</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Gentile, Agustina</au><au>Rossi, María Susana</au><au>Cabral, Daniel</au><au>Craven, Kelly D.</au><au>Schardl, Christopher L.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses</atitle><jtitle>Molecular phylogenetics and evolution</jtitle><addtitle>Mol Phylogenet Evol</addtitle><date>2005-04-01</date><risdate>2005</risdate><volume>35</volume><issue>1</issue><spage>196</spage><epage>208</epage><pages>196-208</pages><issn>1055-7903</issn><eissn>1095-9513</eissn><abstract>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.</abstract><cop>United States</cop><pub>Elsevier Inc</pub><pmid>15737591</pmid><doi>10.1016/j.ympev.2005.01.008</doi><tpages>13</tpages><oa>free_for_read</oa></addata></record> |
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| ispartof | Molecular phylogenetics and evolution, 2005-04, Vol.35 (1), p.196-208 |
| issn | 1055-7903 1095-9513 |
| language | eng |
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| source | MEDLINE; Elsevier ScienceDirect Journals Complete |
| subjects | Base Sequence DNA Primers Endophyte phylogeny Epichloë Genetic Variation Hybrid fungi Neotyphodium Phylogeny Poaceae Poaceae - classification Poaceae - genetics Polymerase Chain Reaction |
| title | Origin, divergence, and phylogeny of epichloë endophytes of native Argentine grasses |
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