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| Publication Type:
| Report |
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| Content Type: | Abstract or Summary only |
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| Author(s): | Blankenship, J. D.;
Wilkinson, H. H.;
Schardl, C. L. |
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| Author Affiliation: | University of Kentucky, Lexington, Kentucky |
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| Title: | Protective alkaloid expression in grass-endophyte mutualisms |
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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. S8. |
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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: Alkaloids; Endophytes; Epichloe; Amplification fragment length polymorphisms
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| Abstract/Contents: | "Epichloe and Neotyphodium species are heritable (seed transmitted) fungal symbionts (endophytes) of cool-season grasses. Endophytes profoundly improve fitness and persistence of their hosts by providing enhanced protection from herbivory, drought, and pathogens. The lolines (saturated 1-amino-pyrrolizidines) are insecticidal alkaloids unique to grass-endophyte mutualisms. Neotyphodium uncinatum produced N-formylloline in culture, providing the first evidence that this important fitness factor is a fungal product. Furthermore, a Mendelian genetic analysis of the sexual endophyte, Epichloe festucae, indicated a single locus controlling loline alkaloid expression. Linked DNA polymorphisms (AFLP) also supported single locus control. The results of assays with insect herbivores revealed that anti-insect activity co-segregated with expression of lolines, and insect mortality correlated with loline alkaloid levels. This is the first Mendelian analysis of a fungal factor directly contributing to a plant-fungus mutualism." |
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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):
Blankenship, J. D., H. H. Wilkinson, and C. L. Schardl. 1998. Protective alkaloid expression in grass-endophyte mutualisms. Phytopathology. 88(9):p. S8. |
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