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Phytophthora quercina : ウィキペディア英語版 | Phytophthora quercina
''Phytophthora quercina'' is a papillate homothallic soil-borne plant pathogen causing root rot of oak tree species in Europe. It is associated with necrotic fine roots. In culture, this species shows a uniform, dome-shaped and cottonwool-like colony growth pattern. It also frequently presents sympodially branched primary hyphae, a high proportion of elongated, ellipsoid or ovoid oogonia, the absence of amphigynous antheridia. Its sporangia vary greatly in size and shape.〔 Its name derives from Greek ''Phytophthora'' φυτόν (phytón), “plant” and φθορά (phthorá), “destruction” and ''quercina'' stems from the affected genus, ''Quercus''. == References ==
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 quercina」の詳細全文を読む
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