Pseudomonas rossensis sp. nov., a novel psychrotolerant species produces antimicrobial agents targeting resistant clinical isolates of Pseudomonas aeruginosa
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26220%2F25%3APU155860" target="_blank" >RIV/00216305:26220/25:PU155860 - isvavai.cz</a>
Result on the web
<a href="https://www.sciencedirect.com/science/article/pii/S266651742500015X" target="_blank" >https://www.sciencedirect.com/science/article/pii/S266651742500015X</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.crmicr.2025.100353" target="_blank" >10.1016/j.crmicr.2025.100353</a>
Alternative languages
Result language
angličtina
Original language name
Pseudomonas rossensis sp. nov., a novel psychrotolerant species produces antimicrobial agents targeting resistant clinical isolates of Pseudomonas aeruginosa
Original language description
The extreme conditions of the Antarctic environment have driven the evolution of highly specialized microbial communities with unique adaptations. In this study, we characterized five Pseudomonas isolates from James Ross Island, which displayed notable taxonomic and metabolite features. Phylogenomic analysis revealed that strain P2663T occupies a distinct phylogenetic position within the Pseudomonas genus, related to species Pseudomonas svalbardensis, Pseudomonas silesiensis, Pseudomonas mucoides, Pseudomonas prosekii, and Pseudomonas gregormendelii. The novelty of five Antarctic isolates was further confirmed through analyses of housekeeping genes, ribotyping, and REP-PCR profiling. MALDI-TOF MS analysis identified 11 unique mass spectrometry signals shared by the Antarctic isolates, which were not detected in other related species. Additionally, chemotaxonomic characterization, including fatty acid composition, demonstrated similarities with related Pseudomonas species. Phenotypic assessments revealed distinctive biochemical and physiological traits. In-depth genomic analysis of strain P2663T uncovered numerous genes which could be involved in survival in extreme Antarctic conditions, including those encoding cold-shock and heat-shock proteins, oxidative and osmotic stress response proteins, and carotenoid-like pigments. Genome mining further revealed several biosynthetic gene clusters, some of which are associated with antimicrobial activity. Functional assays supported the antimicrobial capabilities of this novel species, showing antagonistic effects against clinical isolates of Pseudomonas aeruginosa, possibly mediated by tailocins (phage tail-like particles). This comprehensive polyphasic study characterized a new cold-adapted species, for which we propose the name Pseudomonas rossensis sp. nov.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
10606 - Microbiology
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2025
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Current Research in Microbial Sciences
ISSN
2666-5174
e-ISSN
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Volume of the periodical
8
Issue of the periodical within the volume
1
Country of publishing house
NL - THE KINGDOM OF THE NETHERLANDS
Number of pages
14
Pages from-to
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UT code for WoS article
001420704200001
EID of the result in the Scopus database
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