Insights into the prokaryotic communities of the abyssal-hadal benthic-boundary layer of the Kuril Kamchatka Trench ...

• Main Authors: Gorrasi, Susanna, Franzetti, Andrea, Brandt, Angelika, Minzlaff, Ulrike, Pasqualetti, Marcella, Fenice, Massimiliano
• Format: Article in Journal/Newspaper
• Language: unknown
• Published: figshare 2024
• Subjects: Microbiology; FOS: Biological sciences; Pacific; Kamchatka
• Online Access: https://dx.doi.org/10.6084/m9.figshare.c.6772766; https://springernature.figshare.com/collections/Insights_into_the_prokaryotic_communities_of_the_abyssal-hadal_benthic-boundary_layer_of_the_Kuril_Kamchatka_Trench/6772766

Abstract Background The Kuril–Kamchatka Trench (maximum depth 9604 m), located in the NW Pacific Ocean, is among the top seven deepest hadal trenches. The work aimed to investigate the unexplored abyssal-hadal prokaryotic communities of this fascinating, but underrated environment. Results As for the bacterial communities, we found that Proteobacteria (56.1–74.5%), Bacteroidetes (6.5–19.1%), and Actinobacteria (0.9–16.1%) were the most represented bacterial phyla over all samples. Thaumarchaeota (52.9–91.1%) was the most abundant phylum in the archaeal communities. The archaeal diversity was highly represented by the ammonia-oxidizing Nitrosopumilus, and the potential hydrocarbon-degrading bacteria Acinetobacter, Zhongshania, and Colwellia were the main bacterial genera. The α-diversity analysis evidenced that both prokaryotic communities were characterized by low evenness, as indicated by the high Gini index values (> 0.9). The β-diversity analysis (Redundancy Analysis) indicated that, as expected, the ...