Toxicology study of fraxinellone as ovicidal agents against Mythimna separata Walker and Bombyx mori Linaeus
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چکیده
منابع مشابه
Effects of Fraxinellone on the Midgut Enzyme Activities of the 5th Instar Larvae of Oriental Armyworm, Mythimna separata Walker
Isolated from Dictamnus dasycarpus Turcz., fraxinellone exhibited multiple bioactivities against insects. In the present paper, the changes of digestive enzymes and detoxification enzymes of Mythimna separata Walker (5th instar larvae), treated with fraxinellone, were investigated. Compared with those of the control, the α-amylase activity of the fraxinellone-treated 5th instar larvae was inhib...
متن کاملInsecticidal and feeding deterrent effects of fraxinellone from Dictamnus dasycarpus against four major pests.
Fraxinellone, a well-known and significant naturally occurring compound isolated from Meliaceae and Rutaceae spp. has been widely used as a drug for the treatment of tumors. On the other hand, fraxinellone exhibited a variety of insecticidal activities including feeding-deterrent activity, inhibition of growth, and larvicidal activity. The present study focused on the antifeedant and larvicidal...
متن کاملInsecticidal compounds from Tripterygium wilfordii active against Mythimna separata.
In the course of screening for novel naturally occurring insecticides from plants, the ethanol extract of the root bark of Tripterygium wilfordii Hook f. was found to show insecticidal activity against larvae of Mythimna separata Walker. Three active compounds were isolated by bioassay-guided fractionation of the extract and characterized as triptolide (1), triptonide (2) and euonine (3) by IR,...
متن کاملTranscriptome analysis of molecular mechanisms responsible for light-stress response in Mythimna separata (Walker)
Light is an important environmental signal for most insects. The Oriental Armyworm, Mythimna separata, is a serious pest of cereal crops worldwide, and is highly sensitive to light signals during its developmental and reproductive stages. However, molecular biological studies of its response to light stress are scarce, and related genomic information is not available. In this study, we sequence...
متن کاملSemisynthesis and insecticidal activity of some novel fraxinellone-based thioethers containing 1,3,4-oxadiazole moiety
Two series of novel fraxinellone-based thioethers containing 1,3,4-oxadiazole moiety were prepared as insecticidal agents against the oriental armyworm, Mythimna separata Walker. The structural assignment was based on the spectroscopic and X-ray analysis data. Among all the target compounds, compounds 4b, 4k, 5b, 5j and 5k exhibited more potent insecticidal activity with final mortality rates (...
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ژورنال
عنوان ژورنال: Zeitschrift für Naturforschung C
سال: 2020
ISSN: 1865-7125,0939-5075
DOI: 10.1515/znc-2020-0041