1887

Abstract

Four strains of actinomycete, designated strains JR-19, JR-12, JR-29 and JR-41 were isolated from bamboo () rhizosphere soil. Phylogenetic, morphological, chemotaxonomic and phenotypic analysis demonstrated that the four strains belong to the genus . Microscopic observation revealed that the four strains produced spore chains with spiny surfaces. The cell-wall peptidoglycan of the four strains contained -diaminopimelic acid, glutamic acid, alanine and glycine. Whole-cell hydrolysates mainly contained glucose and ribose. The predominant menaquinones were MK-9 (H) and MK-9 (H). Phylogenetic analysis based on 16S rRNA gene sequence comparisons revealed that these strains and the members of the genus exhibited moderately high 16S rRNA gene sequence similarities of 98.3–99.3 %, with the most closely related strains being 172115 and JR-43. Based on the phenotypic and genotypic data, the four strains are considered to represent two novel species of the genus , for which the names sp. nov. [to accommodate strains JR-19 (type strain;  = KACC 16472 = NBRC 108883), JR-12 ( = KACC 16471) and JR-29 ( = KACC 16473)] and sp. nov. [for strain JR-41 ( = KACC 16580 = NBRC 108885)] are proposed.

Funding
This study was supported by the:
  • , Rural Development Administration, Republic of Korea
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2014-05-01
2020-08-14
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