Understanding interactions between viruses and their hosts is conducive to enabling better application of viruses as biocontrol agents.Certain viruses carried by parasitic wasps enhance the parasitic efficiency of was...Understanding interactions between viruses and their hosts is conducive to enabling better application of viruses as biocontrol agents.Certain viruses carried by parasitic wasps enhance the parasitic efficiency of wasp-larvae by protecting them against the immune system of their Lepidopteran host.However,the relationship between prey pests and viruses found in predatory natural enemies remains unclear.Herein,we report the interaction between Arma chinensis virus-1(AcV-1),originally isolated from a predatory natural enemy,Arma chinensis(Hemiptera:Pentatomidae),and one of its prey species,Spodoptera frugiperda(Lepidoptera:Noctuidae).The results showed that the AcV-1 virus appeared harmful to the novel host S.frugiperda by inhibiting larval diet consumption and increasing pupal mortality.Meanwhile,sequencing data indicated that the virus altered the gene expression profiles of S.frugiperda.KEGG analysis showed that the proteasome and phagosome pathways related to protein degradation and immune response were significantly enriched.Although the expression levels of digestive enzyme genes did not change significantly,the total protease activity of AcV-1 virus-positive individuals was significantly decreased,suggesting that the virus inhibited diet consumption of S.frugiperda via the down-regulation of digestive enzyme activities.These results indicate that a virus initially isolated in a predatory natural enemy can decrease the fitness of its prey species.The virus was found to impact the host proteasome and phagosome pathways related to protein degradation and immunity,providing a potential mechanism to enhance controlling efficiency.展开更多
Every year,millions of people travel to high-elevation regions(≥2500 m above sea level)for sightseeing,mountaineering,trekking,skiing or commercial and scientific research activities.As the largest and highest platea...Every year,millions of people travel to high-elevation regions(≥2500 m above sea level)for sightseeing,mountaineering,trekking,skiing or commercial and scientific research activities.As the largest and highest plateau of the world,the Qinghai-Tibet Plateau(QTP)is one of the most attractive tourist destinations because of its multiple splendid sceneries.High-altitude illnesses occur when the rate of ascent to a high altitude overcomes the ability of the individual to acclimatize.Chronic mountain sickness(CMS)is one of the most important high-altitude pathologies in most high-altitude regions over the world.展开更多
基金supported by the Major Special Projects for Green Pest Control,China(110202101028(LS-03),201938,110202201017(LS-01)and 110202001035(LS04))the National Natural Science Foundation of China(31901893)the Agricultural Science and Technology Innovation Program of Chinese Academy of Agricultural Sciences(ASTIP-TRIC04)。
文摘Understanding interactions between viruses and their hosts is conducive to enabling better application of viruses as biocontrol agents.Certain viruses carried by parasitic wasps enhance the parasitic efficiency of wasp-larvae by protecting them against the immune system of their Lepidopteran host.However,the relationship between prey pests and viruses found in predatory natural enemies remains unclear.Herein,we report the interaction between Arma chinensis virus-1(AcV-1),originally isolated from a predatory natural enemy,Arma chinensis(Hemiptera:Pentatomidae),and one of its prey species,Spodoptera frugiperda(Lepidoptera:Noctuidae).The results showed that the AcV-1 virus appeared harmful to the novel host S.frugiperda by inhibiting larval diet consumption and increasing pupal mortality.Meanwhile,sequencing data indicated that the virus altered the gene expression profiles of S.frugiperda.KEGG analysis showed that the proteasome and phagosome pathways related to protein degradation and immune response were significantly enriched.Although the expression levels of digestive enzyme genes did not change significantly,the total protease activity of AcV-1 virus-positive individuals was significantly decreased,suggesting that the virus inhibited diet consumption of S.frugiperda via the down-regulation of digestive enzyme activities.These results indicate that a virus initially isolated in a predatory natural enemy can decrease the fitness of its prey species.The virus was found to impact the host proteasome and phagosome pathways related to protein degradation and immunity,providing a potential mechanism to enhance controlling efficiency.
基金financially supported by the Second Tibetan Plateau Scientific Expedition and Research Program(2019QZKK0606 and 2019QZKK0906)the National Key Research&Development Program of China(2016YFA0602400)。
文摘Every year,millions of people travel to high-elevation regions(≥2500 m above sea level)for sightseeing,mountaineering,trekking,skiing or commercial and scientific research activities.As the largest and highest plateau of the world,the Qinghai-Tibet Plateau(QTP)is one of the most attractive tourist destinations because of its multiple splendid sceneries.High-altitude illnesses occur when the rate of ascent to a high altitude overcomes the ability of the individual to acclimatize.Chronic mountain sickness(CMS)is one of the most important high-altitude pathologies in most high-altitude regions over the world.
