Akademik Veri Yönetim Sistemi
CURRENT MICROBIOLOGY, cilt.83, sa.6, 2026 (SCI-Expanded, Scopus)
Strain RP23018S(T) was isolated from the solar panels in Gebze, T & uuml;rkiye. According to the phylogenetic analysis of 16S rRNA gene sequences, strain RP23018S(T) was classified as a member of the genus Pseudomonas, being most closely related to Pseudomonas cremoricolorata DSM 17059(T) (99.3%). Strain RP23018S(T) was Gram-stain-negative, rod-shaped, aerobic, motile, growing between temperature range of 4-35 degrees C. The polar lipids of strain RP23018S(T) consisted of phosphatidylethanolamine, di-phosphatidylglycerol, phosphatidylcholine, one unidentified phospholipid, and three unidentified aminolipids. It was determined that the main respiratory quinone of the RP23018S(T) strain was ubiquinone-9 (Q-9), which is a typical chemotaxonomic characteristic of the genus Pseudomonas. Major fatty acids were C-16:0, summed feature 3 (C-16:1 omega 6c and/or C-16:1 omega 7c), summed feature 8 (C-18:1 omega 6c and/or C-18:1 omega 7c), and C-17:0 cyclo. Strain RP23018S(T) had a genome size of 4,944,510 bp and a G + C ratio of 63.0%. The average nucleotide identity (ANI) and digital DNA-DNA hybridization (dDDH) values between RP23018(T) and related Pseudomonas species were below 86.4% and 26.7%, respectively, clearly falling below the thresholds for species delineation. Strain RP23018S(T) produced a deep yellow carotenoid pigment with absorption maxima at 455 and 482 nm. Genome annotation revealed key carotenoid biosynthesis genes (crtX, crtY, crtI, crtZ), and the extracted pigment showed antioxidant activity in DPPH and FRAP assays. Polyphasic characterization, including the determination of overall genome relatedness indices, revealed that strain RP23018S(T) represents a novel species of the genus Pseudomonas, for which the name Pseudomonas gebzensis sp. nov. is proposed. The type strain is RP23018S(T) (= LMG 33436(T) = DSM 117295(T)).