The metabolic potential of the single cell genomes obtained from the Challenger Deep, Mariana Trench within the candidate superphylum Parcubacteria (OD1).

摘要: Summary Candidate phyla (CP) are broad phylogenetic clusters of organisms that lack cultured representatives. Included in this fraction is the candidate Parcubacteria superphylum. Specific characteristics have been ascribed to include reduced genome size, limited metabolic potential, and exclusive reliance on fermentation for energy acquisition. The study new environmental niches, such as marine versus terrestrial subsurface, often expands understanding genetic potential taxonomic groups. For reason we analyzed twelve single amplified genomes (SAGs) from sediment samples collected within Challenger Deep Mariana Trench, obtained during Deepsea Challenge (DSC) Expedition. Many these SAGs closely related sequences deep-sea environments based 16S rRNA gene similarity BLAST matches predicted proteins. DSC encode features not previously identified other habitats. These adaptation oxidative stress, polysaccharide modification, genes associated with respiratory nitrate reduction. also distinguished by relative greater abundance nucleotide amino acid biosynthesis, repair alkylated DNA synthesis mechanosensitive ion channels. results present an expanded view Parcubacteria, among members residing ultra-deep hadal environment. This article protected copyright. All rights reserved.