Nematobacterial Complexes and Insect Hosts: Different Weapons for the Same War

Insects

MaurizioFrancesco Brivio¹  Maristella Mastore¹ 

[1] Laboratory of Comparative Immunology and Parasitology, Department of Theoretical and Applied Sciences, University of Insubria, 21100 Varese, Italy;

关键词: entomopathogenic nematodes;    innate immunity;    insect host;    Steinernema feltiae;    Steinernema carpocapsae;    Xenorhabdus bovienii;    Xenorhabdus nematophila;    host-parasite;   

DOI  :  10.3390/insects9030117

来源: DOAJ

【 摘 要 】

Entomopathogenic nematodes (EPNs) are widely used as biological control agents against insect pests, the efficacy of these organisms strongly depends on the balance between the parasitic strategies and the immune response of the host. This review summarizes roles and relationships between insect hosts and two well-known EPN species, Steinernema feltiae and Steinernema carpocapsae and outlines the main mechanisms of immune recognition and defense of insects. Analyzing information and findings about these EPNs, it is clear that these two species use shared immunosuppression strategies, mainly mediated by their symbiotic bacteria, but there are differences in both the mechanism of evasion and interference of the two nematodes with the insect host immune pathways. Based on published data, S. feltiae takes advantage of the cross reaction between its body surface and some host functional proteins, to inhibit defensive processes; otherwise, secretion/excretion products from S. carpocapsae seem to be the main nematode components responsible for the host immunosuppression.

【 授权许可】

Unknown