AI Article Synopsis
- A new bacterial strain, THG-N2.35, was isolated from Pu'er tea and is characterized as a motile, Gram-stain negative species that thrives at temperatures of 10-40°C and near neutral pH.
- Phylogenetic analysis indicates that it is closely related to several species of the genus Paracoccus, with the highest similarity to Paracoccus hibisci (99.0%), but exhibits distinct differences in DNA hybridization percentages.
- Based on various analyses including DNA content, lipid composition, and physiological traits, THG-N2.35 is proposed as a new species named Paracoccus pueri sp. nov., with the type strain designated as THG-N2.35.
Article Abstract
A Gram-stain negative, aerobic, short rod-shaped, motile by flagella bacterial strain (THG-N2.35), was isolated from Pu'er tea. Growth occurred at 10-40 °C (optimum 28 °C), at pH 4-7 (optimum 7) and at 0-5% NaCl (optimum 1%). Based on 16S rRNA gene sequence analysis, the near phylogenetic neighbours of strain THG-N2.35 were identified as Paracoccus hibisci KACC 18632 (99.0%), Paracoccus tibetensis CGMCC 1.8925 (98.7%), Paracoccus beibuensis CGMCC 1.7295 (98.2%), Paracoccus aestuarii KCTC 22049 (98.2%), Paracoccus rhizosphaerae LMG 26205 (98.1%), Paracoccus zeaxanthinifaciens ATCC 21588 (97.1%), Paracoccus marcusii DSM 11574 (97.0%). Levels of similarity between strain THG-N2.35 and other Paracoccus species were lower than 97.0%. DNA-DNA hybridization values between strain THG-N2.35 and P. hibisci KACC 18632, P. tibetensis CGMCC 1.8925, P. beibuensis CGMCC 1.7295, P. aestuarii KCTC 22049, P. rhizosphaerae LMG 26205, P. zeaxanthinifaciens ATCC 21588, P.marcusii DSM 11574 were 47.5% (42.3%, reciprocal analysis), 36.1% (32.3%), 24.7% (22.1%), 19.2% (16.3%), 11.3% (8.8%), 11.1% (10.8%), 6.1% (5.8%), respectively. The DNA G+C content of strain THG-N2.35 was 62.3 mol%. The polar lipids were diphosphatidylglycerol, phosphatidyl-N-methylethanolamine, phosphatidylethanolamine, phosphatidylglycerol and phosphatidylcholine. The quinone was ubiquinone-10 (Q-10). The major fatty acids were C 3OH, C, C and C ω7ϲ. On the basis of the phylogenetic analysis, chemotaxonomic data, physiological characteristics and DNA-DNA hybridization data, strain THG-N2.35 represent a novel species of the genus Paracoccus, for which the name Paracoccus pueri sp. nov. is proposed. The type strain is THG-N2.35 (= KACC 18934 = CCTCC AB 2016177).
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| http://dx.doi.org/10.1007/s10482-018-1041-9 | DOI Listing |
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