Pathogenic effects of Xenorhabdus nematophilus and Photorhabdus luminescens (Enterobacteriaceae) against pupae of the Diamondback Moth, Plutella xylostella (L.)

A. S. Abdel-Razek
{"title":"Pathogenic effects of Xenorhabdus nematophilus and Photorhabdus luminescens (Enterobacteriaceae) against pupae of the Diamondback Moth, Plutella xylostella (L.)","authors":"A. S. Abdel-Razek","doi":"10.1046/j.1439-0280.2003.02030.x","DOIUrl":null,"url":null,"abstract":"<p>The relationship between <i>Xenorhabdus nematophilus</i> and <i>Photorhabdus luminescens,</i> the bacterial symbionts of the entomopathogenic nematodes <i>Steinernema carpocapsae</i> and <i>Heterorhabditis bacteriophora</i>, against the diamondback moth, <i>P. xylostella</i> (L.), pupae showed the pathogenic capability of <i>P. luminescens</i> to be over that of <i>X. nematophilus</i>. They gave 60 and 40 % mortality with LC<sub>50</sub> values of 5 × 10<sup>4</sup> and 5.5 × 10<sup>5</sup> cells/ml, respectively.</p><p>The number of bacterial cells influences the rate of killing the pupae of <i>P. xylostella</i> and a direct correlation between mortality of the pupae, percentage of deformed adults and the spraying dose with significant differences were observed. An inverse correlation found between the no. of eggs laid/female, percentage of hatching, adult survival and the spraying dose. These bacterial effects have been attributed to different toxic bacterial enzymes which damage the haemocytes and inhibit activation of the humoral immune system of the insect.</p>","PeriodicalId":100103,"journal":{"name":"Anzeiger für Sch?dlingskunde","volume":null,"pages":null},"PeriodicalIF":0.0000,"publicationDate":"2003-08-18","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://sci-hub-pdf.com/10.1046/j.1439-0280.2003.02030.x","citationCount":"37","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Anzeiger für Sch?dlingskunde","FirstCategoryId":"1085","ListUrlMain":"https://onlinelibrary.wiley.com/doi/10.1046/j.1439-0280.2003.02030.x","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 37

Abstract

The relationship between Xenorhabdus nematophilus and Photorhabdus luminescens, the bacterial symbionts of the entomopathogenic nematodes Steinernema carpocapsae and Heterorhabditis bacteriophora, against the diamondback moth, P. xylostella (L.), pupae showed the pathogenic capability of P. luminescens to be over that of X. nematophilus. They gave 60 and 40 % mortality with LC50 values of 5 × 104 and 5.5 × 105 cells/ml, respectively.

The number of bacterial cells influences the rate of killing the pupae of P. xylostella and a direct correlation between mortality of the pupae, percentage of deformed adults and the spraying dose with significant differences were observed. An inverse correlation found between the no. of eggs laid/female, percentage of hatching, adult survival and the spraying dose. These bacterial effects have been attributed to different toxic bacterial enzymes which damage the haemocytes and inhibit activation of the humoral immune system of the insect.

嗜线虫Xenorhabus和发光光弹虫(肠杆菌科)对小菜蛾蛹的致病作用
昆虫病原线虫Steinerma carcapsae和Heterorhambditis bacterophora的共生体Xenorhabdus向列线虫和Photorhabdus luminescens对小菜蛾(P.xylostella(L.))、蛹的关系表明,发光假单胞菌的致病能力高于向列线虫。他们给出了60和40 % LC50值为5的死亡率 × 104和5.5 × 105个细胞/ml。细菌细胞的数量影响小菜蛾对蛹的杀灭率,并与蛹死亡率、成虫畸形率和喷雾剂量直接相关,差异有显著性。产卵数/雌卵数、孵化率、成虫存活率与喷洒剂量呈负相关。这些细菌效应归因于不同的有毒细菌酶,这些酶损伤血细胞并抑制昆虫体液免疫系统的激活。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
求助全文
约1分钟内获得全文 求助全文
来源期刊
自引率
0.00%
发文量
0
×
引用
GB/T 7714-2015
复制
MLA
复制
APA
复制
导出至
BibTeX EndNote RefMan NoteFirst NoteExpress
×
提示
您的信息不完整,为了账户安全,请先补充。
现在去补充
×
提示
您因"违规操作"
具体请查看互助需知
我知道了
×
提示
确定
请完成安全验证×
copy
已复制链接
快去分享给好友吧!
我知道了
右上角分享
点击右上角分享
0
联系我们:info@booksci.cn Book学术提供免费学术资源搜索服务,方便国内外学者检索中英文文献。致力于提供最便捷和优质的服务体验。 Copyright © 2023 布克学术 All rights reserved.
京ICP备2023020795号-1
ghs 京公网安备 11010802042870号
Book学术文献互助
Book学术文献互助群
群 号:481959085
Book学术官方微信