1887

Abstract

A novel endophytic actinobacterium, designated strain EUM 378, was isolated from the surface-sterilized root tissue of , a eucalyptus tree known as Grey Box. Phylogenetic evaluation based on 16S rRNA gene sequence analysis, including alignment with taxon-specific 16S rRNA gene signature nucleotides, placed this isolate as a member of the family . Strain EUM 378 showed >5.5 % 16S rRNA gene sequence divergence from other members of this family and was related most closely to YIM 48868 (94.2 %) and IM 7744 (94.4 %). This Gram-positive, aerobic actinobacterium has well-developed substrate mycelia that fragment into small rods. Chemotaxonomic data revealed that the cell wall contains -diaminopimelic acid, ribose, glucose and rhamnose. MK-10(H) is the predominant menaquinone. Chemotaxonomic and phylogenetic evidence confirmed that strain EUM 378 represents a novel species of a new genus, for which the name gen. nov., sp. nov. is proposed. The type strain is EUM 378 ( = DSM 45355 = ACM 5289).

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2011-09-01
2024-03-29
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