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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Craven, K. D.;
West, C. P.;
Schardl, C. L. |
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| Author Affiliation: | Craven and Schardl: University of Kentucky, Lexington, Kentucky; West: University of Arkansas, Fayetteville, Arkansas |
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| Title: | Endophyte phylogeny and tall fescue evolution |
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| Meeting Info.: | APS/ESA Joint Annual Meeting, November 8-12, 1998, Las Vegas, Nevada |
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| Source: | Phytopathology. Vol. 88, No. 9, September Supplement 1998, p. S19. |
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| Publishing Information: | St. Paul, MN: American Phytopathological Society |
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| # of Pages: | 1 |
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| Keywords: | TIC Keywords: Endophytes; Phylogeny; Festuca arundinacea; Evolution; Acremonium coenophialum
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| Abstract/Contents: | "Tall fescue (Festuca arundinacea, 2n = 6x = 42 chromosomes) is a hybrid grass symbiotic with the strictly seed-borne (maternally transmitted) endophyte, Neotyphodium coenophialum. The origin of tall fescue was investigated by analyzing relationships between its endophyte and those of related grasses. Endophyte beta-tubulin gene phylogenies were used to elucidate these relationships. The three distinctive beta-tubulin genes of N. coenophialum were also identified in the endophytes of F. mairei (4x), F. glaucescens (4x), and related 8x and 10x species. Furthermore, the F. mairei endophyte was morphologically similar to N. coenophialum. Thus, a 4x ancestor likely contributed the endophyte when it hybridized with an F. pratensis (2x) male in the origin of 6x tall fescue. This corroborates published chloroplast and nuclear phylogenies which suggest this scenario in tall fescue evolution. This is the first molecular identification of a strictly seed-borne endophyte in multiple host species, and demonstrates the use of endophyte phylogeny in elucidating origins of grasses." |
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| Language: | English |
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| References: | 0 |
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| Note: | This item is an abstract only! |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Craven, K. D., C. P. West, and C. L. Schardl. 1998. Endophyte phylogeny and tall fescue evolution. Phytopathology. 88(9):p. S19. |
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