Potyvirus
出处:按学科分类—生物科学 复旦大学出版社《病毒手册》第633页(3558字)
【又名】:
Potato virus Y group.
【释文】:
文献 Moghal,S.M.& Francki,R.I.B.(1981),Virology 112(1),210;Int ervirology(1982),17/1-3/82,p.152.
形态与组分 线形,680~900×ii~12纳米,螺旋对称,螺距3.4纳米,群内有4种病毒在无Mg存在时长50~100纳米。粒子沉降系数150~160S,浮力密度(CsCl)1.31克/厘米3。核酸为单链RNA,正链,含量约15%,分子量3000000~3500000,G∶A∶C∶U=28~34∶24~27∶17~21∶21~28,群内某些病毒的RNA链3′端有PolyA。蛋白质含量95%,亚基分子量3000~36000。
生物学特性 寄主范围广,但个别病毒狭窄,有些病毒也能感染蕨类植物,主要引起花叶。汁液和介体蚜虫作非持续性传播,某些病毒是种子传播。致死温度50~60℃,体外保毒期几天。得率5~25毫克/升病汁液。群内病毒相互间都有血清学关系。病毒在寄主细胞质中散生或集结成束,能形成风轮状、环状和束状内含体,但它不具备寄主细胞抗原性及病毒致病性,内含体有间距为5纳米的横纹结构,它能被胃蛋白酶和胰蛋白酶水解,风轮状和管状内含体常连于细胞的内质网上。根据内含体的不同可分为3个亚群:(1)风轮状和管状内含体;(2)风轮状和薄片集聚的内含体;(3)风轮状、管状和薄片状集聚成的内含体。RNA的复制可能在叶绿体内或它的附近进行。
分类 它是植物病毒中的一个群。典型病毒Potato virus Y,其他病毒有Amaranthus leaf mottle virus,Bean common mosaic virus,Bean yellow mosaic virus.Bearded iris mosaic virus,Beet mosaic virus,Bidens mottle virus. Blackeye cowpea mosaic virus,Carnation vein mottle virus.Carrot thln leaf virus, Celery mosaic virus,Clover yellow vein virus,Cocksfoot streak virus,Colombian datura virus. Commelina mosaic virus, Cowpea aphid-brone mosaic virus,Dasheen mosaic virus,Datura shoestring virus,Guinea grassmosaic virus,Henbane mosaic virus,Hippeastrum mosaic virus,Iris mild mosaic virus,Iris severe mosaic virus.Leek yellow stripe virus,Lettuce mosaic virus,Narcissus degeneration virus, Nothoscordum mosaic virus, Onion yellow dwarf virus,Papaya ringspot virus.Parsnip mosaic virus.Passionfruit woodiness virus,Pea seed-borne mosaic virus,Peanut mottle virus, Pepper mottle virus,Pepper severe mosaic virus,Pepper veinal mottle virus,Plum pox virus,Pokeweed mosaic virus, Potato virus A, Soybean mosaic virus,Sugarcane mosaic virus,Tamarillo mosaic virus,Tobacco etch virus,Tulip breaking virus,Turnip mosaic virus,Watermelon mosaic virus 1.Watermelon mosaia virus 2,Wistaria vein mosaic virus该病毒群的可能成员有蚜传的Anthoxanthum mosaic virus,Aquilegia virus, Araujia mosaia virus,Artichoke latent virus,Bidens mosaic virus,Bryonia mottle virus,Canavalia maritima virus,Carrot mosaic virus,Celery yellow mosaic virus, Clover virus,Crinum virus,Daphne Y virus,Datura 437 virus,Datura mosaic virus,Dendrobium mosaic virus,Desmodium mosaic virus,Dioscorea green banding virus,Dioscorea trifida virus,Dock mottling mosaic virus,Euphorbia ringspot virus,Fern virus,Freesia mosaic virus, Garlic yellow streak virus, Gloriosa stripe mosaic virus,Groundnut eyespot virus,Guar symptomless virus,Heleniumvirus Y,Holcus streak virus,Hyacinth mosaic virus,Iris fulva mosaic virus,Isachne mosaic virus,Kennedya Y virus,Maclura mosaic virus,Malva vein clearing virus,Marigold mottle virus,Mungbean mosaic virus,Mungbean mottle virus,Narcissus late season yellows virus, Narcissus yellow stripe virus,Nerine virus,Ornithogalum mosaic virus,Palm mosaic virus,Passionfruit ringspot virus,Primula mosaic virus,Reed canary mosaic virus,Statice virus Y,Sweet potato A virus,Sweet potato russet crack virus,Teasel mosaic virus,Tobacco vein mottling virus,Tomato(Peru)mosaic virus,Tradescantia/Zebrina virus,Wheat spindle streak virus,Wheat streak virus,White bryony mosaic virus,Wild potato mosaic virus;真菌传的Barley yellow mosaic virus,Oat mosaic virus,Rice necrosis mosaic virus,Wheat spindle streak mosaic virus,Wheat yellow mosaic virus;螨传的Agropyron mosaic virus,Oat necrotic mottle virus, Ryegrass mosaic virus,Spartina mottle virus,Wheat streak mosaic virus;粉虱传的Sweet potato mild mottle virus。
名称来源 “poty”由“potato virus Y”缩并而来。