Metabolic Transformation of the Brassinosteroid 24-£/?i-castasterone by the Cockroach Periplaneta americana
نویسندگان
چکیده
After feeding of 24-ep/-castasterone to the cockroach Periplaneta americana an organspecific epimerization of the brassinosteroid to 2,24-d/ep/-castasterone could be detected in female insects. The metabolite being observed only in the ovaries and not in the testes of the insect was identified by GC/MS in comparison with a synthesized authentic sample. Con trary, 24-ep/-brassinolide is not metabolized in the sexual organs of Periplaneta americana. This is the first evidence of a metabolic transformation of a brassinosteroid in insects.
منابع مشابه
Metabolic transformation of the brassinosteroid 24-epi-castasterone by the cockroach Periplaneta americana.
After feeding of 24-epi-castasterone to the cockroach Periplaneta americana an organ-specific epimerization of the brassinosteroid to 2,24-diepi-castasterone could be detected in female insects. The metabolite being observed only in the ovaries and not in the testes of the insect was identified by GC/MS in comparison with a synthesized authentic sample. Contrary, 24-epi-brassinolide is not meta...
متن کاملTachykinin stimulates α-amylase, protease and lipase activities in the midgut of the American cockroach, Periplaneta americana (Blattodea: Blattidae)
در این تحقیق به بررسی اثر تاکیکینین بر روی فعالیت آلفا آمیلاز، پروتئاز و لیپاز در معده میانی سوسری امریکایی (L.) Periplaneta americana پرداخته شد. فعالیت ایمنوهیستوشیمیایی سلول‌های معده میانی (بخش های جلویی، میانی و عقبی) که تاکیکینین ترشح می‌کردند مورد تایید قرار گرفت. چهار هفته گرسنگی، تعداد سلول هایی را که عکس العمل ایمنوهیستوشیمیایی مقابل آنتی‌بادی تاکیکینین داشتند (Tachykinin-ir cel...
متن کاملEvaluation of bacterial infection of external surface and digestive system of cockroach species
Introduction: The presence of cockroaches has health implications, such as nosocomial infection, as the insects move freely from areas within and around hospitals that may harbor pathogenic organisms. The aims of the present study were to detect cockroach species and bacterial infection transmitted by their surface and their digestive system. Methods: In this study we caught 250 cockroac...
متن کاملمدیریت تلفیقی سوسری آمریکایی Periplaneta americana (L.) در شبکه و تاسیسات جمعآوری فاضلاب در شهر بوشهر
Background and Objective: The sewer system is one of the important and suitable areas for the growth and reproduction of American Cockroach Periplaneta americana (L.) in Bushehr. This project was implemented for considering the high cost of spraying and environmental pollution. Materials and Methods: In this study some commonly insecticides were tested in different doses to evaluate the effect...
متن کاملPharmacological properties of axonal sodium channels in the cockroach Periplaneta americana L. I. Selective block by synthetic saxitoxin.
Voltage-clamp experiments on isolated giant axons of the cockroach Periplaneta americana L. show that chemically synthesized saxitoxin specifically and reversibly blocks the transient inward sodium current without affecting the steady-state outward potassium current. From the concentration depending of sodium current suppression it is concluded that individual sodium channels are blocked by sin...
متن کامل