4 結果
The cabbage armyworm, Mamestra brassicae, has winter-and aestival- diapause pupae (WD- and AD-pupae) showing differences in the strength of diapause. We tried to quantify diapause-strength by measuring the doses of 20-hydroxyecdysone (20-E) required to induce adult development in WD-, AD- and
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
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