An laboratory trial was conducted to assess the insect-pest rejectant compatibility of six ecofrindly botanical alcoholic extracts Viz., Azadirachta indica A.Juss., Adhatoda vasica Nees. Curcuma domestica Val. Lantana camara Linn., Ricinus communis Linn. and Vitex nugendo With control (untreated) were tested find out their comparative antifeedant effects worked against third instars larvae Diam...

The diamondback moth, Plutella xylostella (L.), is considered the most universally distributed of all Lepidoptera and the main insect pest of crucifers worldwide. Although P. xylostella is confined to feeding on plants within the Cruciferae, this diverse family contains a wide host of weed species and cultivated plants that occur throughout the world. Over the last several decades the importanc...

The diamondback moth Genome Database (DBM-DB) is a central online repository for storing and integrating genomic data of diamondback moth (DBM), Plutella xylostella (L.). It provides comprehensive search tools and downloadable datasets for scientists to study comparative genomics, biological interpretation and gene annotation of this insect pest. DBM-DB contains assembled transcriptome datasets...

There is a scarcity of studies concerning Plutella xylostella L. dealing with either interactions between partial plant resistance and insecticides or multitrophic interactions (with or without insecticides). Such studies are vital to allow improved understanding of possible interactions in IPM programmes and may help both to develop approaches which enhance cultural and biological controls and...

Parasitism by endoparasitoid wasps changes the expression of various host genes, and alters host immune and developmental processes. However, it is not clearly understood how parasitism changes host gene expression in a whole genome scale. This study focused on an epigenetic control of Cotesia plutellae, an endoparasitoid wasp, against its host, Plutella xylostella. Two DNA methyltransferases (...

Insect herbivores often have higher densities on host plants grown in monocultures than those in diverse environments. The underlying mechanisms are thought to be that polyphagous insects have difficulty in selecting food or oviposition sites when multiple host plants exist. However, this hypothesis needs to be extensively investigated. Our field experiments revealed that the population of the ...

Histone H4 is highly conserved and forms a central-core nucleosome with H3 in eukaryotic chromatin. Its covalent modification at the protruding N-terminal region from the nucleosomal core can change the chromatin conformation in order to regulate gene expression. A viral H4 was found in the genome of Cotesia plutellae bracovirus (CpBV). The obligate host of the virus is an endoparasitoid wasp, ...

Diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), has become the most destructive insect pest of cruciferous vegetables (Brassica oleracea L.) worldwide, and is a continuing problem especially in the southern United States. Because of inconsistencies in individual control methods, inefficiencies and time demands of scouting, and the lack of clear thresholds, current managem...

In the present study, besides morphological evidence, two bioassays, antenna-excision and hairpencil-excision, were used to demonstrate the presence of a male sex pheromone of the diamondback moth Plutella xylostella L. Although the antenna-excision bioassay demonstrated that a male aphrodiasic pheromone exists in the diamondback moth, it was proven to be not as important as the female sex pher...