@Article{IPB-2275, author = {Schmidt, J. and Richter, K. and Voigt, B. and Adam, G.}, title = {{Metabolic Transformation of the Brassinosteroid 24-Epi-castasterone by the Cockroach Periplaneta americana}}, year = {2000}, pages = {233-239}, journal = {Z. Naturforsch. C}, doi = {10.1515/znc-2000-3-415}, volume = {55}, abstract = {After feeding of 24-epi-castasterone to the cockroach Periplaneta americana an organspecific epimerization of the brassinosteroid to 2,24-depi-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 metabolized in the sexual organs of Periplaneta americana. This is the first evidence of a metabolic transformation of a brassinosteroid in insects.} }