Populations of the diamondback moth Plutella xylostella (L.) larvae from two locations : Ooty and Oddanchatram (Tamil Nadu State) were found to be infected by a granulosis virus (GV). The virus was highly pathogenic to P. xylostella larvae and was responsible for the collapse of laboratory colonies of the insect. Restriction endonuclease analysis of the viral DNA with Pst 1, Hind 3, Bam H1 and ...

Insect cytochrome P450 monooxygenases (P450s) play an important role in catalysis of many reactions leading to insecticides resistance. Our previous studies on transcriptome analysis of chlorantraniliprole-resistant development in the diamondback moth, Plutella xylostella revealed that up-regulation of cytochrome P450s are one of the main factors leading to the development of chlorantraniliprol...

Plutella xylostella, a global key pest, is one of the major lepidopteran pests of cruciferous vegetables owing to its strong ability of resistance development to a wide range of insecticides. Destruxin A, a mycotoxin of the entomopathogenic fungus, Metarhizium anisopliae, has broad-spectrum insecticidal effects and has been used as an alternative control strategy to reduce harmful effects of in...

Collards (Brassica oleracea var. acephala) are an important vegetable crucifer produced worldwide for human consumption, and one subject to severe injury by Lepidoptera. We have produced Bacillus thuringiensis (Bt)-transgenic collard lines that have the potential to be used either for direct control or as a ‘‘dead end’’ trap crop for Lepidoptera. To produce collard lines expressing Bt genes, a ...

The diamondback moth, Plutella xylostella L. (Lepidoptera: Plutellidae), is an important insect pest of cruciferous crops. Understanding its preference patterns can lead to more efficient management methods, such as trap Several strains P. were used test whether there differences in oviposition a four-choice setting, on abaxial versus adaxial leaf surfaces 28 different plant species, and substr...

Tanaman sawi merupakan salah satu komoditas sayuran yang cocok dibudidayakan pada iklim tropis khususnya di Indonesia. Namun saat budidaya, rentan terkena serangan hama ulat daun Plutella xylostella L. (Lepidoptera: Plutellidae). Penelitian ini bertujuan untuk mengetahui efektifitas ekstrak bawang putih dan sirsak terhadap tingkat mortalitas palatabilitas larva P. tanaman sawi. dilaksanakan bul...

The feeding activity of Plutella xylostella in brassica crops can lead to large losses; thus, pesticides that prevent during the larval stage or metamorphosis this insect be used for its control. In study, effects two types aqueous extracts Tradescantia pallida on different life P. cycle were tested; neither extracts, which obtained by infusion and maceration, had been tested against xylostella...

A previous study documented a glycine to glutamic acid mutation (G4946E) in ryanodine receptor (RyR) was highly correlated to diamide insecticide resistance in field populations of Plutella xylostella (Lepidoptera: Plutellidae). In this study, a field population collected in Yunnan province, China, exhibited a 2128-fold resistance to chlorantraniliprole. Sequence comparison between resistant an...

Use of non-glossy collards as a trap crop for control of the diamondback moth, Plutella xylostella (L.), in commercial fields of cabbage in New York was unsuccessful because it neither reduced the number of larvae on cabbage nor concentrated the insects on collards. In laboratory and outdoor screenhouse experiments, P. xylostella preferentially laid its eggs on the glossy-type Barbarea vulgaris...