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''Phytophthora plurivora'' is a very aggressive soil-borne plant pathogen, with worldwide distribution and a wide variety of hosts. It belongs to the class of oomycetes and is often described as a ‘fungal-like’ organism since they form a heterotrophic mycelium as the ‘true fungi’, but in contrast, their cell wall lacks chitin and is composed only of cellulose and glucans. Its name derives from Greek ''Phytophthora'' φυτόν (phytón), “plant” and φθορά (phthorá), “destruction”; “the plant-destroyer” and ''plurivora'' and from Latin (pluri = many, -vora = feeding). == Origins == ''Phytophthora plurivora'' was first described by Sawada (1927) as ''P. citricola'' (isolated from citrus in Taiwan) based just on morphological and physiological characters. After a more accurate work T. Jung and T.I. Burgess, based not just on morphological and phisiological characters, but also on phylogenetic analyses, proposed that the isolates of ''P. citricola'' showed a high diversity and were then subdivided into four new groups, among them the new species ''P. plurivora'' sp. nov. ''P. citricola'' and ''P. plurivora'' differ in length and breadth ratio of sporangia, colony growth patterns and optimal temperature. ''P. plurivora'' shows homothallic, paragynous antheridia and semipapillate sporangia resembling lemons. It is assumed that ''P. plurivora'' was imported from overseas on living plant stock and could spread in Europe because of perfect climate conditions and ubiquitous presence of host plants. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Phytophthora plurivora」の詳細全文を読む スポンサード リンク
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