Thirty soilborne viruses or virus-like agents are transmitted by five species of fungal vectors. Ten polyhedral viruses, of which nine are in the family Tombusviridae, are acquired in the in vitro manner and do not occur within the resting spores of their vectors, Olpidium brassicae and O. bornovanus. Fungal vectors for other viruses in the family should be sought even though tombusviruses are reputed to be soil transmitted without a vector. Eighteen rod-shaped viruses belonging to the furo- and bymovirus groups and to an unclassified group are acquired in the in vivo manner and survive within the resting spores of their vector, O. brassicae, Polymyxa graminis, P. betae, and Spongospora subterranea. The viral coat protein has an essential role in in vitro transmission. With in vivo transmission a site in the coat protein-read through protein (CP-RT) of beet necrotic yellow vein furovirus determines vector transmissibility as does a site in a similar 98-kDa polyprotein of barley mild mosaic bymovirus. The mechanisms by which virions move (or are moved) into and out of the protoplasm of zoospores or of thalli needs study.

中文翻译：

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植物病毒的真菌传播。

五种真菌载体可传播三十种土壤传播的病毒或类病毒制剂。十种多面体病毒，其中九种是Tombusviridae家族，是通过体外方式获得的，不会在其载体Olpidium Brasicae和O.bornovanus的静止孢子中发生。即使人们认为鼓膜病毒是在没有载体的情况下通过土壤传播的，也应寻找该家族其他病毒的真菌载体。以体内的方式获得了18种属于呋喃和副病毒组以及未分类组的杆状病毒，它们在它们的载体O. brasicae，Polymyxa graminis，P。betae和Spongospora subterranea的静止孢子中存活。病毒外壳蛋白在体外传播中具有重要作用。通过体内传播，甜菜坏死黄静脉呋喃病毒的外壳蛋白通读蛋白（CP-RT）中的位点决定了载体的可传递性，大麦轻度花叶病毒的相似98-kDa多蛋白中的位点也是如此。需要研究病毒体移入（或移出）游动孢子或藻类原生质的机制。