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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク Waitea circinata ： ウィキペディア英語版 Waitea circinata ''Waitea circinata'' is a species of fungus in the family Corticiaceae. Basidiocarps (fruit bodies) are thin, effused, and web-like, but the fungus is more frequently encountered in its similar but sterile anamorphic state, sometimes called ''Rhizoctonia zeae''. ''Waitea circinata'' is best known as a plant pathogen, causing commercially significant damage to cereal crops and turf grass. ==Taxonomy== ''Waitea circinata'' was originally described from Australia in 1962, where it was found growing on the undersides of clods of earth in a wheat field. The new genus ''Waitea'', named after the Waite Agricultural Research Institute in Adelaide, was created to accommodate the species.〔 Because of its morphological similarity to species of ''Rhizoctonia'' and ''Thanatephorus'', ''Waitea circinata'' was presumed to belong within the Ceratobasidiaceae, but cladistic analysis of DNA sequences has shown that it actually belongs in the Corticiaceae and is close to species of ''Laetisaria'' (which are also grass pathogens).〔 The anamorphic species ''Rhizoctonia zeae'', originally described as the causal agent of ear rot of maize, is a synonym of ''Waitea circinata''. ''Rhizoctonia oryzae'' has also been considered a synonym,〔 but the name is not validly published and is of doubtful application (it has also been considered a synonym of ''Rhizoctonia solani'').〔 The name ''Rhizoctonia circinata'' has been used for the anamorph of ''Waitea circinata'', but is not validly published and appears to be a portmanteau error.〔〔 Molecular research has shown that ''Waitea circinata'' is divided into four genetically distinct clades and that representatives of these clades cause visibly different diseases. They have been considered varieties of the species ("var. circinata", "var oryzae", "var. zeae", and one unnamed),〔〔 but the named varieties have not been formally described or validly published.〔〔 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「Waitea circinata」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.