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| Web URL(s): | https://academic.oup.com/jee/article/90/5/1414/2216752/Growth-Stimulant-and-Antifeedant-Activity-in
Last checked: 02/28/2017
Access conditions: Item is within a limited-access website
Notes: Guide page |
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| Publication Type:
| Refereed |
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| Author(s): | Mohamed, M. A.;
Quisenberry, S. S.;
Croughan, S. S. |
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| Author Affiliation: | Department of Entomology, Louisiana Agricultural Experiment Station, Louisiana State University Agricultural Center, Batton Rouge, LA 70803; Department of Entomology, 202 Plant Industry, University of Nebraska, Lincoln, NE 68583-0816; Rice Research Station, P.O. Box 1429, Crowley, LA 70527. |
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| Title: | Growth stimulant and antifeedant activity in Bermuda grass affecting the fall armyworm (Lepidoptera: Noctuidae) |
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| Section: | Plant resistance
Other records with the "Plant resistance" Section
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| Source: | Journal of Economic Entomology. Vol. 90, No. 5, October 1997, p. 1414-1425. |
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| Publishing Information: | Lanham, MD: Entomological Society of America |
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| # of Pages: | 12 |
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| Keywords: | TIC Keywords: Cynodon dactylon; Spodoptera frugiperda; Chromatography; Genotypes; Growth; Nutrition; Feeding preferences
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| Abstract/Contents: | "Dietary nutrients were identified by mass spectroscopy from chromatographic isolates of the neutral lipid fraction of Bermuda grass, Cynondon dactylon L. (Pers.). These included methyl and ethyl linolenate, vitamin E (λ -tocopherol, D*atocopherol), and the 3 sterols: campestrol, stigmasterol, and sitosterol. Gas liquid capillary chromatographic analyses of these molecules indicated significant differences among the Bermuda grass genotypes, especially in sterol composition. Campestrol was present in most of the genotypes examined with stigmasterol and sitosterol, showing the greatest variability in abundance and occurrence among the Bermuda grass lines. Larvae of fall armyworm, Spodoptera frugiperda (J. E. Smith), fed on diet supplemented with the lipid fraction showed significantly higher larval weight accumulation (28-54%) compared with controls. Larval growth was variably dependent on the genotype or somaclone lipid profile. These findings confirm a major role for neutral lipids in insect growth physiology and, by implication, are key elements in Bermuda grass nutritive value. Additionally, an antifeedant also was isolated from Bermuda grass. A crude sohxlet extract from Bermuda grass (line OSU 71 X6-7) was sequentially fractionated by silica gel flash column and reverse-phase high-pressure liquid chromatography (HPLC). A bioassay-guided scheme with the fall armyworm yielded an active antifeedant fraction eluting at 10% EtOAc/CH₂Cl₂, from which a single active component was isolated by HPLC. The biological effects of these isolates on neonate fall armyworm larvae included a retardation of larval growth (80% reduction in larval weight) and an increase in duration to pupal metamorphosis (70%) that were significantly different from either control treatments or other chromatographic fractions. A concentration-dependent antifeedant response with the isolate to topically treated diet plugs was observed." |
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| Language: | English |
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| References: | 34 |
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| Note: | Figures
Tables
Graphs |
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| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete):
Mohamed, M. A., S. S. Quisenberry, and S. S. Croughan. 1997. Growth stimulant and antifeedant activity in Bermuda grass affecting the fall armyworm (Lepidoptera: Noctuidae). J. Econ. Entomol. 90(5):p. 1414-1425. |
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| Web URL(s):
https://academic.oup.com/jee/article/90/5/1414/2216752/Growth-Stimulant-and-Antifeedant-Activity-in
Last checked: 02/28/2017
Access conditions: Item is within a limited-access website
Notes: Guide page |
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MSU catalog number: SB 931 .A1 J6 |
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