欢迎访问中国生物防治学报,今天是

中国生物防治学报 ›› 2020, Vol. 36 ›› Issue (2): 288-293.DOI: 10.16409/j.cnki.2095-039x.2020.02.015

• 研究简报 • 上一篇    下一篇

亚洲玉米螟和黏虫幼虫取食Cry1F蛋白后的中肠组织病理变化

李国平1, 姬婷婕1, 陈文波2, 赵晓辉3, 黄建荣1, 田彩红1, 封洪强1   

  1. 1. 河南省农业科学院植物保护研究所/河南省农作物病虫害防治重点实验室/农业部华北南部作物有害生物综合治理重点实验室, 郑州 450002;
    2. 河南农业大学植物保护学院, 郑州 450002;
    3. 秦皇岛市山海关国营林场, 山海关 066200
  • 收稿日期:2019-04-30 出版日期:2020-04-08 发布日期:2020-04-16
  • 通讯作者: 封洪强,博士,研究员,E-mail:feng_hq@163.com
  • 作者简介:李国平,博士,副研究员,E-mail:Liguoping1976@163.com
  • 基金资助:
    转基因重大专项(2016ZX08012004-007,2019ZX08012004-004)

Pathological Changes in Larval Midgut Tissues of Ostrinia furnacalis (Lepidoptera:Crambidae) and Mythimna separata (Lepidoptera:Noctuidae) after Feeding Cry1F Protein

LI Guoping1, JI Tingjie1, CHEN Wenbo2, ZHAO Xiaohui3, HUANG Jianrong1, TIAN Caihong1, FENG Hongqiang1   

  1. 1. Henan Key Laboratory of Crop Pest Control/MOA'S Regional Key Laboratory of Crop IPM in Southern Part of Northern China/Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China;
    2. Department of Entomology, College of Plant Protection, Henan Agricultural University, Zhengzhou 450002, China;
    3. Shanhaiguan State-owned Forest Farm of Qinhuangdao, Shanhaiguan 066200, China
  • Received:2019-04-30 Online:2020-04-08 Published:2020-04-16

摘要: 为了明确Cry1F杀虫蛋白对亚洲玉米螟和黏虫两种重要玉米害虫的作用机制,本文通过透射电镜观察了亚洲玉米螟和黏虫4龄幼虫取食含Cry1F蛋白人工饲料后的中肠组织病理变化,并与其取食含Cry1Ab蛋白人工饲料后的组织病理变化进行了比较。亚洲玉米螟和黏虫4龄幼虫取食Cry1F蛋白48 h后中肠杯状细胞发生了明显的病变,主要表现为:细胞微绒毛肿胀、脱落;细胞核变形,质膜和核膜界限不清晰;染色质发生固缩、贴近核膜;线粒体拉伸变形数量减少,严重的发生空泡化;内质网肿胀与断裂、数量减少,与取食含Cry1Ab蛋白人工饲料相比,玉米螟和黏虫中肠组织发生的病变程度相似。本研究可为Cry1F作为转基因玉米重要的杀虫蛋白在未来亚洲玉米螟和黏虫防治中更好地发挥作用提供理论依据。

关键词: 亚洲玉米螟, 黏虫, Cry1F, Cry1Ab, 中肠组织, 病理变化

Abstract: To determine the action mechanism of the insecticidal protein Cry1F, the pathological changes in the midgut of the Asian corn borer, Ostrinia furnacalis (Guené) and Oriental armyworm, Mythimna separata (Walker), fed on an artificial diet containing Cry1F protein, were observed using transmission electron microscope, and the changes induced by Cry1Ab were also investigated. The results showed that the goblet cells changed significantly after Asian corn borer and Oriental armyworm fed on an artificial diet containing Cry1F protein for 48 h, the major symptoms included:microvilli swelled and dropped off, the nucleus deformation, the boundary of karyotheca in cell nucleus blurred and the chromatins underwent pyknosis and was pressed close to the karyotheca, the number of mitochondria tensile deformation and endoplasmic reticulum reduced, the inner cristae of mitochondria indistinct and vacuolated, and the endoplasimic reticulum were swollen, fractured and disordered. The pathological changes of goblet cells in the midgut of Asian corn borer and Oriental armyworm larvae induced by Cry1F were the similar to that by Cry1Ab. This study may provide the theoretical basis for better using Cry1F as important insecticidal protein in transgenic corn in the future.

Key words: Ostrinia furnacalis, Mythimna separata, Cry1F protein, Cry1Ab protein, midgut tissues, pathological changes

中图分类号: