Full TGIF Record # 183472
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DOI:10.1603/EN09227
Web URL(s):http://www.bioone.org/doi/full/10.1603/EN09227
    Last checked: 06/15/2011
    Access conditions: Item is within a limited-access website
Publication Type:
i
Refereed
Author(s):Baldauf, Michael W.; Mace, Wade J.; Richmond, Douglas S.
Author Affiliation:Baldauf and Richmond: Department of Entomology, Purdue University, West Lafayette, IN; Mace: AgResearch, Palmerston North, New Zealand
Title:Endophyte-mediated resistance to black cutworm as a function of plant cultivar and endophyte strain in tall fescue
Section:Plant-insect interactions
Other records with the "Plant-insect interactions" Section
Source:Environmental Entomology. Vol. 40, No. 3, June 2011, p. 639-647.
# of Pages:9
Publishing Information:College Park, MD: Entomological Society of America
Related Web URL:http://www.bioone.org/doi/pdf/10.1603/EN09227
    Last checked: 06/15/2011
    Access conditions: Document is within a limited-access website
c
    Last checked: 06/17/2011
    Access conditions: Document is within a limited-access website
    Notes: Abstract only
Keywords:TIC Keywords: Acremonium; Agrotis ipsilon; Endophyte-infected plants; Ergovaline; Festuca arundinacea; Insect resistance; N-acetyl loline; Peramine
Abstract/Contents:"To improve Neotyphodium endophyte-mediated resistance to black cutworm Agrotis ipsilon (Hufnagel) (BCW), a series of experiments was conducted by using several different cultivars of tall fescue, Schedonorus arundinaceus (Schreb.) Dumort. in combination with several different haplotypes of the endophyte Neotyphodium coenophialum (Morgan-Jones & Gams) (plant cultivar 'x' endophyte haplotype = plant line), each producing unique alkaloid profiles. BCW settling response, survival at 5 and 10 d, and larval biomass varied significantly among plant lines. In general, greater variation BCW performance was observed within a single plant cultivar infected with different endophyte haplotypes than among different plant cultivars infected with the same endophyte haplotype, but comparisons among the former were far more numerous. Although five endophyte-mediated alkaloids representing three alkaloid classes were quantified in the plants, the pyrrolizidine alkaloid N-acetyl norloline was consistently the single best predictor of BCW performance. BCW settling response, 5-d survival, and 10-d survival decreased as levels of the alkaloid N-acetyl norloline increased. The same three response variables also decreased with increasing levels of peramine, but increased with increasing levels of ergovaline. Minor variation in endophyte infection levels occurring among infected plant lines had no significant influence on BCW performance. Results indicate a potentially important role for N-acetyl norloline and peramine in providing resistance to black cutworm whereas ergovaline appears to be much less important. Therefore, endophyte haplotypes expressing high levels of N-acetyl norloline and peramine may be of particular importance for developing `friendly' endophyte-enhanced turf and pasture grasses that resist challenging lepidopteran pests, although remaining safe for wildlife and grazing mammals."
Language:English
References:53
See Also:See also related monograph, Influence of Nitrogen Fertility and Neotyphodium Endophyte Strain on Black Cutworm Agrotis ipsilon Hufnagel Performance, Feeding Behavior, and Susceptibility to the Insect Parasitic Nematode Steinernema carpocapsae (Weiser) in Tall Fescue Schedonorus arundinaceus (Schreb.) Dumort, 2009, R=287956. R=287956
Note:Tables
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ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Baldauf, M. W., W. J. Mace, and D. S. Richmond. 2011. Endophyte-mediated resistance to black cutworm as a function of plant cultivar and endophyte strain in tall fescue. Environ. Entomol. 40(3):p. 639-647.
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DOI: 10.1603/EN09227
Web URL(s):
http://www.bioone.org/doi/full/10.1603/EN09227
    Last checked: 06/15/2011
    Access conditions: Item is within a limited-access website
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