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| Web URL(s): | https://www.dl.sciencesocieties.org/publications/cs/articles/41/2/570
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| Publication Type:
| Refereed |
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| Author(s): | Clement, S. L.;
Elberson, L. R.;
Youssef, N. N.;
Davitt, C. M.;
Doss, R. P. |
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| Author Affiliation: | Clement, Elberson: USDA-ARS, Plant Germplasm Introduction and Testing Research Unit, Washington State University, Pullman, WA; Youssef: Department of Plant, Soil and Entomological Sciences, University of Idaho, Moscow, ID; Davitt: Electron Microscopy Center, Washington State University, Pullman, WA; Doss: USDA-ARS, Horticultural Crops Research Unit, Corvallis, OR |
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| Title: | Incidence and diversity of Neotyphodium fungal endophytes in tall fescue from Morocco, Tunisia, and Sardinia |
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| Section: | Plant genetic resources
Other records with the "Plant genetic resources" Section
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| Source: | Crop Science. Vol. 41, No. 2, March/April 2001, p. 570-576. |
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| Publishing Information: | Madison, WI: Crop Science Society of America |
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| # of Pages: | 7 |
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| Keywords: | TIC Keywords: Diversity; Endophytic fungi; Festuca arundinacea; Germplasm; Rhopalosiphum padi; Ecological distribution; Aphids
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| Geographic Terms: | Morocco; Tunisia; Sardinia |
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| Abstract/Contents: | "There is a premium on having Neotyphodium germplasm available for temperate grass improvement programs because these fungal endophytes present opportunities for developing new grass-endophyte combinations for enhanced tolerance to abiotic and biotic stresses. Unfortunately, surveys have revealed a low incidence of Neotyphodium fungi in grass germplasm collections. This research surveyed tall fescue (Festuca arundinacea Schreb.) accessions from a 1994 Australian-U.S. plant-collection trip to Morocco, Tunisia, and Italy (Sardinia) for viable Neotyphodium fungi and determined whether infected accession harbor different Neotyphodium genotypes. Conidial measurements of isolates cultured on agar and bioassays of the differential survival of bird cherry-oat aphid [Rhopalosiphum padi (L.)] on infected accessions were used to characterize Neotyphodium diversity. A secondary objective determined the consistency of a polymerase chain reaction (PCR) method to detect Neotyphodium fungi in tall fescue. Neotyphodium was detected in 336 of 439 plants (76.5%) distributed among 104 accessions, of which 99 were endophyte-infected. Mean conidial lengths of 42 isolates ranged from 3.91 to 9.91 μm. Most of the isolates (71.4%) had conidia with mean lengths smaller than the lower limit (6.5 μm) characteristic of the tall fescue endophyte N. coenophialum (Morgan-Jones and Gams) Glenn, Bacon, and Hanlin. In aphid assays, all endophyte-free plants were susceptible to R. padi and all but two infected plants were resistant to this aphid. Thus, a Mediterranean plant-collection trip secured diverse Neotyphodium endophytes in tall fescue for storage in seed banks, and a PCR assay detected Neotyphodium in tall fescue plants of diverse geographical origin." |
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| Language: | English |
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| References: | 43 |
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| Note: | Pictures, b/w
Tables |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Clement, S. L., L. R. Elberson, N. N. Youssef, C. M. Davitt, and R. P. Doss. 2001. Incidence and diversity of Neotyphodium fungal endophytes in tall fescue from Morocco, Tunisia, and Sardinia. Crop Sci. 41(2):p. 570-576. |
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| Web URL(s):
https://www.dl.sciencesocieties.org/publications/cs/articles/41/2/570
Last checked: 05/05/2017
Access conditions: Item is within a limited-access website
https://www.dl.sciencesocieties.org/publications/cs/pdfs/41/2/570
Last checked: 05/05/2017
Requires: PDF Reader
Access conditions: Item is within a limited-access website |
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MSU catalog number: SB 183 .C7 |
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