<i>Roseateles agri</i> sp. nov., a New Species Isolated from Fresh Soil in Uiwang, South Korea
2024
Yelim You | Jaisoo Kim
Two isolates of <i>Roseateles</i> were discovered in soil samples collected from Uiwang-si, Gyeonggi-do, Republic of Korea. These isolates exhibited rod-shaped morphology and were facultatively anaerobic, non-motile, and tested positive for oxidase and catalase. Designated as strains R3-3<sup>T</sup> and R3-11, their growth was hindered by NaCl concentrations exceeding 0.5%, while their optimal growth conditions were observed at temperatures ranging from 25 °C to 30 °C and pH levels between 7.0 and 9.0. Both strains exhibited positive results for the hydrolysis of Tween 80 and DNA, but tested negative for starch, casein, chitin, and gelatin hydrolysis. Additionally, they assimilated L-Arabinose, D-mannitol, and D-Maltose, while exhibiting negative results for the fermentation of D-glucose, esculin ferric citrate, D-mannose, N-acetyl-glucosamine, potassium gluconate, capric acid, adipic acid, trisodium citrate, and phenylacetic acid. The DNA G+C content of strain R3-3<sup>T</sup> was measured at 67.5 mol%. Comparative analysis revealed that the average nucleotide identity (ANI) values between R3-3<sup>T</sup> and the <i>Roseateles</i> type strains ranged from 75.14% to 78.30% while the digital DNA-DNA hybridization (dDDH) values ranged from 20.70% to 22.70%. Consequently, based on comprehensive genomic, chemotaxonomic, phenotypic, and phylogenomic evaluations, the isolated strains have been designated as a new species within the genus <i>Roseateles</i>, named <i>Roseateles agri</i> sp. nov. (with type strain R3-3<sup>T</sup> = KACC 23678<sup>T</sup> = NBRC 116681<sup>T</sup>).
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