Research Article | Volume: 3, Issue: 10, October, 2013

Hyptis brevipes (Lamiaceae) Extracts Strongly Inhibit the Growth and Development of Spodoptera littoralis (Boisd.) Larvae (Lepidoptera: Noctuidae)

Hanem H. Sakr Shimaa H. Roshdy and Hesham R. El-Seedi   

Open Access   

Published:  Oct 31, 2013

DOI: 10.7324/JAPS.2013.31014
Abstract

Hyptis brevipes (Lamiaceae) extracts are shown to exhibit strong insecticidal activity against the 3rd instar larva of the cotton leaf worm Spodoptera littoralis (Boisd.) (Lepidoptera: Noctuidae), inducing complete larval mortality due to the arrest and/or disruption of metamorphosis. This disruption induced a wide range of abnormalities. The LC50 value of the dichloromethane extract of H. brevipes was 3.0% (95% F.L. = 2.2% - 4.4%; slope = 3.185± 0.952) after three days of treatment. Two active compounds were isolated from the extract following bioassay-guided fractionation and were identified as 5-hydroxy-7,4'-dimethoxy-flavon-3-ol and 5-hydroxy-7-methoxy-2-(4`-methoxy-phenyl)-chromen-4-one based on spectroscopic data. This is the first report of these secondary metabolites in H. brevipes.


Keyword:     Hyptis brevipes Lamiaceae Spodoptera littoralis growth disruption flavonoids.


Citation:

Hanem H. Sakr, Shimaa H. Roshdy and Hesham R. El-Seedi. Hyptis brevipes (Lamiaceae) Extracts Strongly Inhibit the Growth and Development of Spodoptera littoralis (Boisd.) Larvae (Lepidoptera: Noctuidae). J App Pharm Sci, 2013; 3 (10): 083-088.

Copyright:The Author(s). This is an open access article distributed under the Creative Commons Attribution Non-Commercial License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

HTML Full Text

Reference

Article Metrics
350 Views 18 Downloads 368 Total

Year

Month

Related Search

By author names