ecdysone/brassica

HPLC allowed separation of twelve major labeled compounds after injection of 3H-ecdysone into Pieris pharate pupae. These compounds were identified as six pairs of metabolites (3 alpha and 3 beta epimers), comprising ecdysone, 20-hydroxyecdysone, 26-hydroxyecdysone, 20,26-dihydroxy-ecdysone and the

Injection of labelled ecdysone and 2-hydroxyecdysone into Pieris pupae showed that their catabolism proceeds through 26-hydroxylation followed by conversion into acidic steroids assumed to be 26-oic compounds. This biological system is characterized by the lack of conjugation reactions and by rather

During the screening of immune-regulated genes from the cabbage looper, Trichoplusia ni, a 3-dehydroecdysone 3beta-reductase homologue (DERH) was cloned. In the course of development, 3-dehydroecdysone 3beta-reductase mediates the conversion of 3-dehydroecdysone (3dE) secreted from the prothoracic

The novel nonsteroidal ecdysone agonist tebufenozide is capable of controlling a wide range of lepidopteran pests. However its intensive use in vegetables has raised concerns towards the safety of food and environment. Here, we developed an easy and reliable method to analyze tebufenozide in cabbage

The ability to regulate spatial and temporal expression of genes is a useful tool in biotechnology as well as studies of functional genomics. Such regulation can provide information concerning the function of a gene in a developmental context while avoiding potential harmful effects due to