Rharrabe Kacem, Alla Salah, Maria Annick, Sayah Fouad, Lafont René
Université Abdelmalek Essaadi, Faculté des Sciences et Techniques, CEEM-Laboratoire de Biologie Appliquée et Sciences de l'Environnement, Tangier, Morocco.
Arch Insect Biochem Physiol. 2007 Jun;65(2):65-73. doi: 10.1002/arch.20191.
The metabolic pathways of ingested ecdysteroids have been investigated in three insect species, the aphid Myzus persicae and two Lepidoptera, Plodia interpunctella and Ostrinia nubilalis. M. persicae produces mainly a 22-glucoside conjugate, whereas P. interpunctella eliminates a mixture of 20E and its 3-oxo and 3-epi derivatives, both in free form and as conjugates with various fatty acids. O. nubilalis only produces fatty acyl ester conjugates. These data point out the great diversity of detoxification mechanisms used by phytophagous insects in order to overcome the potential harmful effects of ecdysteroids present in their food.
已在三种昆虫中研究了摄入蜕皮甾类的代谢途径，即蚜虫桃蚜以及两种鳞翅目昆虫，印度谷螟和欧洲玉米螟。桃蚜主要产生一种22-葡萄糖苷缀合物，而印度谷螟则以游离形式以及与各种脂肪酸的缀合物形式消除20E及其3-氧代和3-表衍生物的混合物。欧洲玉米螟仅产生脂肪酰酯缀合物。这些数据表明，植食性昆虫为克服其食物中存在的蜕皮甾类的潜在有害影响而采用的解毒机制具有很大的多样性。
