Journal of Microbiology and Biotechnology

The Korean Society for Microbiology and Biotechnology (한국미생물·생명공학회)
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Agromyces silvae sp. nov., Rathayibacter soli sp. nov., and Nocardioides terrisoli sp. nov., Isolated from Soil

  • Hyosun Lee (Department of Biological Science, College of Science and Engineering, Sangji University) ;
  • Dhiraj Kumar Chaudhary (Department of Microbiology, Pukyong National University) ;
  • Dong-Uk Kim (Department of Biological Science, College of Science and Engineering, Sangji University)
  • Received : 2024.04.03
  • Accepted : 2024.05.10
  • Published : 2024.07.28
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Abstract

Three Gram-stain-positive, aerobic, rod-shaped, and non-motile bacteria, labelled as W11T, SW19T, and YR1T, were isolated from soil, and performed their polyphasic taxonomic investigation. The phylogenetic and 16S rRNA gene sequence analysis showed that strains W11T, SW19T, and YR1T belonged to the genera Agromyces, Rathayibacter, and Nocardioides, respectively. Strain W11T was closely affiliated with Agromyces cavernae SYSU K20354T (98.1%), strain SW19T showed the closest affiliation with Rathayibacter rubneri ZW T2_19T (97.0%), and strain YR1T was most closely related to Nocardioides marmorisolisilvae KIS18-7T (98.0%). The genome sizes of strains W11T, SW19T, and YR1T were 4,181,720 bp, 4,740,677 bp, and 4,228,226 bp, respectively, with DNA G+C contents of 70.5%, 64.2%, and 69.7%, respectively. Average nucleotide identity and digital DNA-DNA hybridization values of W11T, SW19T, and YR1T with their respective reference species were <79.6% and <23.6%, respectively. The predominant cellular fatty acids detected in strain W11T were anteiso-C15:0, iso-C16:0, and anteiso-C17:0. In strain SW19T, they were summed feature 9 (C16:0 10-methyl and/or iso-C17:1ω 9c), anteiso-C17:0, and anteiso-C15:0. Strain YR1T exhibited C18:1ω 9c, C18:0 10-methyl, TBSA, and anteiso-C15:0 as its major cellular fatty acids. Overall, the polyphasic taxonomic comparisons indicated that strains W11T, SW19T, and YR1T represent novel species within the genera Agromyces, Rathayibacter, and Nocardioides, respectively. Accordingly, we propose the names Agromyces silvae sp. nov., with the type strain W11T (=KCTC 49818T =NBRC 115999T), Rathayibacter soli sp. nov., with the type strain SW19T (=KCTC 49860T =NBRC 116108T), and Nocardioides terrisoli sp. nov., with the type strain YR1T (=KCTC 49863T =NBRC 116165T).

Keywords

Acknowledgement

This work was supported by a grant from the National Institute of Biological Resources (NIBR), funded by the Ministry of Environment (MOE) of the Republic of Korea (NIBR202203112).

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