植物源提取物对TuMV和PVY的抗病毒作用高倩,孙振琪,赵凯,赵梓晔,赵星月,赵明敏*(内蒙古农业大学园艺与植物保护学院,内蒙古呼和浩特010011)摘要采用芦苇、沙葱、洋葱提取物和蛇床子素对芜菁花叶病毒(tunipmosaicvirus,TuMV)和马铃薯Y病毒(potatovirusY,PVY)进行预防作用、治疗作用、钝化效果的研究。结果表明,植物源提取物对TuMV有一定的抗病毒作用。在预防试验中,洋葱提取物的预防效果较好,接种的6株植物中仅有1株发病。蛇床子、沙葱提取物接种的6株植物中有3株发病。在治疗试验中,沙葱、洋葱、芦苇提取物和蛇床子素接种的6株植物,均有3株发病。4种植物源提取物对TuMV均有一定的钝化作用。其中蛇床子素的钝化作用最强,钝化TuMV后的植株发病率仅为16.67%,低于对照宁南霉素。4种植物源提取物对PVY的抑制作用不明显,发病株数均高于对照组宁南霉素处理的发病株数。该研究结果可为进一步研发植物源农药提供数据支持。关键词植物源提取物;PVY;TuMV;植物源农药中图分类号S482.2+92文献标识码A文章编号0517-6611(2023)07-0154-06doi:10.3969/j.issn.0517-6611.2023.07.036开放科学(资源服务)标识码(OSID):BioactiveNaturalExtractsfromPlantsagainstTuMVandPVYGAOQian,SUNZhen-qi,ZHAOKaietal(CollegeofHorticultureandPlantProtection,InnerMongoliaAgriculturalUniversity,Ho-hhot,InnerMongolia010011)AbstractInthisexperiment,thepreventive,therapeuticandpassivationeffectsofPhragmitesaustralis,Alliummongolicum,onionsextractsandostholontunipmosaicvirus(TuMV)andpotatovirusY(PVY)wereinvestigated.Theresultsshowedthattheplant-derivedextractshadcertainantiviraleffectonTuMV.Inthepreventivetest,theonionextractwasmoreeffective,withonlyoneofthesixplantsinoculateddevelo-pingthedisease.ThreeofthesixplantsinoculatedwiththeextractsofAlliummongolicumandostholwerediseased.Inthetherapeuticexperi-ment,threeofthesixplantsinoculatedwithPhragmitesaustralis,Alliummongolicum,onionsextractsandostholwerediseased.Allfourplant-derivedextractshadapassivatingeffectonTuMV,withthestrongestpassivatingeffectofosthol,withonly16.67%plantincidence,whichwaslowerthanthatofthecontrolningnanmycin.TheinhibitionofPVYbythefourplantextractswasnotsignificantandthen...