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Single cells within the Puerto Rico Trench suggest hadal adaptation of microbial lineages

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When we looked at the presence and abundance of SAG genes in different metagenomes, specific genes were uniquely found to be associated with the Puerto Rico Trench (PRT). Many of these encoded functions associated with transport or transcription. Also, PRT SAR11 and PRT NitrosopumilusSAG genes were more abundant in the meta-genomes examined from deeper-dwelling organisms. Overall, thesingle cells collected from the PRT suggest that the development ofadded metabolic capabilities might be advantageous for survival in this and perhaps other hadal locations.

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