Insecticide resistance and concomittant field failure to control the diamondback moth (DBM), Plutella xylostella were first recorded in 1968 in Punjab. Studies carried out in different states like Tamil Nadu, Karnataka, Madhya Pradesh, Punjab, indicate that fenvalerate, quilnalphos and monocrotophos resistance are now ubiquitous in Plutella xylostella. In Tamil Nadu, the discriminating dose tec...

Potential trap crops for the diamondback moth, Plutella xylostella (L.) (Lepidoptera: Plutellidae), were evaluated through a series of ovipositional preference and larval survival experiments in outdoor screenhouses in 2002 and 2003. Hosts examined as trap crops were glossy and waxy collards, Brassica oleracea L. variety acephala; Indian mustard, Brassica juncea (L.) Czern; and yellow rocket,Ba...

Neotropical populations of the diamondback moth Plutella xylostella L. have seasonal cycles of growth and decrease, and moth migration plays a fundamental role in generating such population dynamics. Since the oscillation of these populations is predictable, photoperiod might operate as a signal that triggers the migratory behaviour of the insect. Migration in insects is usually preceded by rep...

Tanaman sawi merupakan tanaman sayuran yang cukup populer dan banyak ditanam di Indonesia. Petani Indonesia terus meningkatkan produksi kualitas sayur budidayanya, namun mengalami beberapa kendala. Salah satu kendala budidaya adalah adanya serangan hama utama yaitu ulat tritip (Plutella xylostella), oleh karena itu perlu dilakukan pengendalian. Pestisida nabati dapat digunakan untuk pengendalia...

BACKGROUND The diamondback moth Plutella xyllostella has developed a high level of resistance to the latest insecticide chlorantraniliprole. A better understanding of P. xylostella's resistance mechanism to chlorantraniliprole is needed to develop effective approaches for insecticide resistance management. PRINCIPAL FINDINGS To provide a comprehensive insight into the resistance mechanisms of...

The diamondback moth, Plutella xylostella (L), is recognized as a widely distributed and serious pest of crucifers in many countries. In some countries, however, it is effectively suppressed by parasites. These are critically examined as are the various attempts to import parasites and to release them. The appraisal reveals that the parasites of P. xylostella are a valuable control component an...

BACKGROUND Although decoding the molecular mechanisms underlying insecticide resistance has often proven difficult, recent progress revealed that specific mutations in ryanodine receptor (RyR) of diamondback moth, Plutella xylostella, can confer to diamide insecticides. The extent which RyR contribute phenotype, associated genetic traits and fitness costs remain limited. RESULTS Three field-evo...

In the present study, we cloned and sequenced the entire coding regions of two glutathione S-transferase (GST) genes encoding PxGSTs and PxGSTe from the diamondback moth, Plutella xylostella L. (Lepidoptera: Yponomeutidae), along with their respective 5' and 3' flanking regions. The PxGSTs gene was composed of four exons and three introns. Based on amino acid identity with GST genes from other ...

In the present study, we cloned and sequenced the entire coding regions of two glutathione S-transferase (GST) genes encoding PxGSTs and PxGSTe from the diamondback moth, Plutella xylostella L. (Lepidoptera: Yponomeutidae), along with their respective 5′ and 3′ flanking regions. The PxGSTs gene was composed of four exons and three introns. Based on amino acid identity with GST genes from other ...

The three-dimensional conformation of Aea-TMOF (Aedes aegypti Trypsin Modulating Oostatic Factor), a decapeptide (YDPAPPPPPP) isolated from mosquito ovaries that inhibits the translation of many trypsin-like serine proteases, e.g. in mosquitoes, flies and lepidopterans, was used as a model for the synthesis of 10 aromatic and aliphatic organic acid and ester analogues. The organic TMOF analogue...