ArticleWorld journal of microbiology & biotechnology2026
Transcriptome landscape unveils putative defense response in Chryseobacterium sp. strain PMSZPI against uranium toxicity.
Article in World journal of microbiology & biotechnology, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
Certain bacteria from the naturally occurring microbial world have exhibited remarkable abilities to overcome the limitations of the environmental stressors. Consequently, they reprogram their stress response programmes to maximize their survival. One such bacterium namely Chryseobacterium sp. strain PMSZPI, a member of the phylum Bacteroidota, isolated from sub-surface soil of a uranium (U) ore deposit demonstrated high tolerance to several heavy metals including U (MIC 4 mM). To gain insights into U resistance in PMSZPI, we characterized the physiological and transcriptome-wide defense responses of PMSZPI to U exposure. PMSZPI cells exposed to challenging concentration of 300 µM U exhibited reactive oxygen species (ROS) accumulation, protein carbonylation and increased membrane permeability. Transcriptome analysis identified 288 upregulated and 195 downregulated genes at 0.5 h and 197 upregulated and 131 downregulated genes at 24 h of U exposure. The most prominent response was protection against U-induced oxidative stress, including induction of superoxide dismutase (log
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