Stratification of Sulfur Species and Microbial Community in Launched Marine Sediment by an Improved Sulfur-Fractionation Method and 16S rRNA Gene Sequencing.

ABSTRACT: With a focus on marine sediment launched by the tsunami accompanying the Great East Japan Earthquake, we examined the vertical (i.e., depths of 0-2, 2-10, and 10-20 mm) profiles of reduced inorganic sulfur species and microbial community using a newly improved sulfur-fractionation method and 16S rRNA gene sequencing. S⁰ accumulated at the largest quantities at a depth of 2-10 mm, while the reduced forms of sulfur, such as iron(II) sulfide and pyrite, were abundant below 2 mm of the sediment. Operational taxonomic units (OTUs) related to chemolithotrophically sulfur-oxidizing Sulfurimonas denitrificans and Sulfurimonas autotrophica were only predominant at 2-10 mm, suggesting the involvement of these OTUs in the oxidation of sulfide to S⁰. In addition, Desulfocapsa sul

SUBMITTER: Ihara H 

PROVIDER: S-EPMC6594742 | biostudies-literature | 2019 Jun

REPOSITORIES: biostudies-literature