<i>Rhodococcus folensis</i> sp. nov., an orange-red-pigmented bacterium from mining soil
SCIENTIFIC REPORTS, cilt.16, sa.1, 2026 (SCI-Expanded, Scopus)
- Yayın Türü: Makale / Tam Makale
- Cilt numarası: 16 Sayı: 1
- Basım Tarihi: 2026
- Doi Numarası: 10.1038/s41598-026-58503-0
- Dergi Adı: SCIENTIFIC REPORTS
- Derginin Tarandığı İndeksler: Science Citation Index Expanded (SCI-EXPANDED), Scopus, BIOSIS, Chemical Abstracts Core, EMBASE, MEDLINE, Directory of Open Access Journals, Zoological Record, Academic Search Ultimate (EBSCO), Natural Science Collection (ProQuest), Biological Science Database (ProQuest), Biomedical Reference Collection: Corporate Edition (EBSCO), Health Research Premium Collection (ProQuest)
- Karadeniz Teknik Üniversitesi Adresli: Evet
Özet
Mining-impacted environments represent chemically complex ecosystems that may harbor metabolically versatile and pigment-producing microorganisms. During a survey of pigment-producing bacteria from abandoned mining soil in Trabzon, T & uuml;rkiye, a red-pigmented strain, designated FMA22T, was isolated and characterized using a polyphasic taxonomic approach. 16 S rRNA gene sequence analysis placed the strain within the genus Rhodococcus, showing the highest similarity to R. corynebacterioides DSM 20,151T (99.57%), R. kroppenstedtii DSM 44908(T) (99.06%) and R. trifolii T8T (98.96%). The strain was Gram-stain-positive, aerobic and non-motile, and grew at 4-40 degrees C. Polar lipids included phosphatidylethanolamine, diphosphatidylglycerol, phosphatidylinositol, phosphatidylinositol mannoside, phosphatidylcholine, five unidentified glycolipids, four unidentified lipids, one unidentified phospholipid and one unidentified phosphoglycolipid; MK-8(H2) was the major respiratory quinone. Major fatty acids were C18:1 omega 9c, summed feature 3 (C16:1 omega 7c/C16:1 omega 6c) and C16:0. ANI and dDDH values with the closest relatives were below 76.8% and 20.5%, respectively. The draft genome (4.23 Mb; 67.2 mol% G + C; 4,106 CDSs) harbors a terpene-associated carotenoid cluster containing crtB, crtI and crtY. The orange-red pigment (lambda max = 475 nm) showed antioxidant activity (DPPH SC50 = 5.38 mg mL(-)& sup1;; FRAP = 4.34 & micro;mol TE g(-)& sup1;) and weak but measurable HIV-1 reverse transcriptase inhibition (IC50 = 22 mg mL(-)& sup1;). These data support the proposal of Rhodococcus folensis sp. nov., with FMA22(T) (= LMG 34144(T) = DSM 120048(T)) as the type strain.