Details

Autor(en) / Beteiligte

• Wang, Chong
• Zheng, Rikuan
• Sun, Chaomin

Titel

Multi-omics analyses provide insights into the sulfur metabolism of a novel deep-sea sulfate-reducing bacterium

Ist Teil von

• iScience, 2024-06, Vol.27 (6), p.110095, Article 110095

Ort / Verlag

United States: Elsevier Inc

Erscheinungsjahr

2024

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• Sulfate-reducing bacteria (SRB) are ubiquitously distributed across various biospheres and play key roles in global sulfur and carbon cycles. However, few deep-sea SRB have been cultivated and studied in situ, limiting our understanding of the true metabolism of deep-sea SRB. Here, we firstly clarified the high abundance of SRB in deep-sea sediments and successfully isolated a sulfate-reducing bacterium (zrk46) from a cold seep sediment. Our genomic, physiological, and phylogenetic analyses indicate that strain zrk46 is a novel species, which we propose as Pseudodesulfovibrio serpens. We found that supplementation with sulfate, thiosulfate, or sulfite promoted strain zrk46 growth by facilitating energy production through the dissimilatory sulfate reduction, which was coupled to the oxidation of organic matter in both laboratory and deep-sea conditions. Moreover, in situ metatranscriptomic results confirmed that other deep-sea SRB also performed the dissimilatory sulfate reduction, strongly suggesting that SRB may play undocumented roles in deep-sea sulfur cycling. [Display omitted] •Clarified the high abundance of SRB in deep-sea cold seep sediments•Isolated a novel SRB from a deep-sea cold seep sediment•The novel SRB performed DSR coupled with organic matter oxidation•Deep-sea SRB indeed performed DSR in deep-sea environment Microbial metabolism; Microbiology; Omics