Transcriptome-wide marker gene expression analysis of stress-responsive sulfate-reducing bacteria

Area of Science:

• Microbiology
• Environmental Science
• Genomics

Background:

• Sulfate-reducing bacteria (SRB) are crucial in anaerobic ecosystems and cause significant infrastructure biocorrosion.
• Understanding SRB genetic mechanisms under environmental stress is vital due to economic impacts.

Purpose of the Study:

• To analyze the stress response mechanisms of four SRB species.
• To identify key transcriptional signatures and gene clusters involved in SRB environmental adaptation.

Main Methods:

• Utilized transcriptome-wide marker gene panel mapping and gene clustering analysis.
• Mined public RNA-sequencing data and generated in-house data for Oleidesulfovibrio alaskensis.
• Performed comparative genomic analysis.

Main Results:

• Identified crucial transcriptional candidate genes in Desulfovibrio spp. and validated gene cluster predictions.
• Revealed unique transcriptional signatures of Oleidesulfovibrio alaskensis at graphene and copper interfaces.
• Comparative genomics showed 12,821 translated genes across four SRB genomes.

Conclusions:

• The study provides insights into SRB genetic regulation under stress.
• Paves the way for developing predictive deep learning tools for SRB gene regulation analysis.