Growth Inhibitory Effects on Fall Armyworm Spodoptera frugiperda of Some Limonoids Isolated from Cedrela spp. (Meliaceae)
Dichloromethane extracts of Cedrela salvadorensis and Cedrela dugessi afforded a photogedunin epimeric mixture, gedunin and cedrelanolide. These compounds and the photogedunin epimeric acetates 3 and 4 at the 23-OH position were evaluated against Spodoptera frugiperda. Toosendanin, isolated from Mel...
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Published in | Journal of agricultural and food chemistry Vol. 48; no. 5; pp. 1903 - 1908 |
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Main Authors | , , , |
Format | Journal Article |
Language | English |
Published |
United States
American Chemical Society
01.05.2000
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Subjects | |
Online Access | Get full text |
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Summary: | Dichloromethane extracts of Cedrela salvadorensis and Cedrela dugessi afforded a photogedunin epimeric mixture, gedunin and cedrelanolide. These compounds and the photogedunin epimeric acetates 3 and 4 at the 23-OH position were evaluated against Spodoptera frugiperda. Toosendanin, isolated from Melia azedarach, was used as a positive control. When tested for activity on neonate larvae into the no-choice bioassays, gedunin, photogedunin epimeric mixture, and photogedunin acetates mixture caused significant larval mortality with LC50 of 39.0, 10.0, and 8.0 ppm at 7 days, respectively, as well as growth reduction. All the compounds tested inhibited larval growth, compared to the control, in a concentration-dependent manner. In addition, it was possible to observe significant reduced pupal weights and adult emergence. All the tested compounds except cedrelanolide showed comparable activity to that of toosendanin. Keywords: Cedrela salvadorensis; C. dugessi, Meliaceae; Spodoptera frugiperda; Lepidopterae; limonoids; photogedunin; gedunin; cedrelanolide; toosendanin; insect growth inhibitors |
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Bibliography: | istex:F7203271A4C48B120EAC0DDFB46C049D0EE1DA49 ark:/67375/TPS-ND69FDP9-C ObjectType-Article-1 SourceType-Scholarly Journals-1 ObjectType-Feature-2 content type line 23 |
ISSN: | 0021-8561 1520-5118 |
DOI: | 10.1021/jf990443q |