4.5 Article

Pseudomonas anatoliensis sp. nov and Pseudomonas iridis sp. nov. isolated from fish

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出版社

ELSEVIER GMBH
DOI: 10.1016/j.syapm.2021.126198

关键词

Pseudomonas; Rainbow trout; Oncorhynchus mykiss; Aquaculture

资金

  1. Scientific and Technological Research Council of Turkey (TUBITAK) [118O420]
  2. Bursa Uludag University

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The study identified potential new species in fish farms in Turkey, belonging to the species Pseudomonas anatoliensis and Pseudomonas iridis.
In a study carried out between 2013 and 2018 in fish farms in Turkey, several putative novel species were isolated. The 16S rRNA nucleotide sequences of fourteen strains of Gram-negative rods, which were isolated from asymptomatic and symptomatic rainbow trouts (Onchorhynchus mykiss), placed them under the genus Pseudomonas. The similarity values of the concatenated nucleotide sequences of the rpoD, rpoB, gyrB and 16S rRNA genes clustered these isolates into the P. fluorescens phylogenetic group of species and into the Pseudomonas koreensis subgroup, close to Pseudomonas helmanticensis and Pseudomonas baetica. An isolate of a totally different origin, strain CCUG 67011, clustered with these isolates. Phenotypic characterization, together with the chemotaxonomic data, whole-cell MALDI-TOF MS and fatty acids methyl esters analyses were performed. The DNA G + C content was 58.7 mol% for isolate P9(T) and 58.8 mol% for isolate P42(T). The phylogenomic analysis and whole genome nucleotide sequences of four of these isolates confirmed that the isolates P9(T), P25 and P141, represent a novel species for which the name Pseudomonas anatoliensis sp. nov. is proposed, with P9(T) as the type strain (=CCUG 74755(T) = CECT 3172(T)). The isolates P1, P2, P10, P27, P30, P24a, P42(T), P117, P139, P152 and CCUG 67011 represent another novel secies, for which the name Pseudomonas iridis sp. nov. is proposed, with P42(T) as the type strain (=CCUG 74870(T) = CECT 3174(T)). (C) 2021 Elsevier GmbH. All rights reserved.

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