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The phytopathogens Corynebacterium flaccumfaciens (Hedges), Corynebacterium betae (Keyworth, Howell & Dowson), Corynebacterium oortii (Saaltink & Maas Geesteranus) and Corynebacterium poinsettiae (Starr & Pirone) differ to such an extent from the type species of Corynebacterium, Corynebacterium diphtheriae (Lehimann & Neumann), that they cannot be retained in this genus. On the basis of biochemical, chemical and genetic data it is proposed that Cor. flaccumfaciens. Cor. betae, Cor. oortii and Cor. poinsettiae be reclassified in the genus Curtobacterium (Yamada & Komagata), as Curtobacterium flaccumfaciens (Hedges) comb. nov.
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COLLINS et al. (1983) studied this question.
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