| Literature DB >> 32482677 |
Rui Pi1, Qingyun Liu1, Howard E Takiff2,3,4, Qian Gao5.
Abstract
We isolated spontaneous levofloxacin-resistant strains of Mycobacterium aurum to study the fitness cost and compensatory evolution of fluoroquinolone resistance in mycobacteria. Five of six mutant strains with substantial growth defects showed restored fitness after being serially passaged for 18 growth cycles, along with increased cellular ATP level. Whole-genome sequencing identified putative compensatory mutations in the glgC gene that restored the fitness of the resistant strains, presumably by altering the bacterial energy metabolism.Entities:
Keywords: compensatory mutation; fitness cost; levofloxacin; mycobacteria; resistance
Mesh:
Substances:
Year: 2020 PMID: 32482677 PMCID: PMC7526816 DOI: 10.1128/AAC.00224-20
Source DB: PubMed Journal: Antimicrob Agents Chemother ISSN: 0066-4804 Impact factor: 5.191