Physiological, histopathological and cellular immune effects of Pergularia tomentosa extract on Locusta migratoria nymphs

作     者：Meriam Miladi Khemais Abdellaoui Amel Ben Hamouda Iteb Boughattas Mouna Mhafdhi Fatma Acheuk Monia Ben Halima-Kamel 

作者机构：Higher Agronomic Institute of Chott MariemSousse UniversityChott Mariem 4042Tunisia General Directorate of Plant Health and Agricultural Inputs ControlMinistry of AgricultureTunis 1002Tunisia Laboratory of Valorization and Conservation of Biological ResourcesDepartment of BiologyFaculty of SciencesUniversity of BoumerdesBoumerdes 35000Algeria 

出 版 物：《Journal of Integrative Agriculture》 (农业科学学报（英文版）)

年 卷 期：2019年第18卷第12期

页      面：2823-2834页

核心收录：

学科分类：0710[理学-生物学] 07[理学] 09[农学] 

主　　题：Locusta migratoria Pergularia tomentosa toxicity histopathology haemocytes enzymes 

摘      要：The migratory locust Locusta migratoria(Orthoptera,Acrididae)is one of the most important pests due to its extensive and severe damage to crops in large parts of Africa and *** and ecologically natural products such as bota nical insecticides are emergi ng can didates for replaceme nt of usually applied chemical *** crude methanolic extract of Pergularia tomentosa(PME)was investigated for their toxicity and physiological aspects on *** *** showed that treatment of newly emerged fourth and fifth instar nymphs resulted in significant mortality and significant repellent activity with an LC50 value of 0.18 and 0.38%,respectively,after seven days of *** PME toxicity was also dem on strated by histopathological cha nges in the alime ntary canal resulting in con siderable disorganization and severe damage of the caeca and proventriculus *** extract induced cellular immune reactions which manifested by a significant decrease in the number of the differential haemocyte counts(prohemocytes and plasmatocytes)and important cell *** of biochemical analyses showed that the PME reduced the activity of acetylcholinesterase and induced the glutathione *** neurotoxic effect was confirmed by the histological alterations in the brain structure,particularly in the neurosecretory cells showing typical signs of cell necrosis.