Characterization of Fe(III)-Reducing Enrichment Cultures and Isolation of Enterobacter sp. Nan-1 from the Deep-Sea Sediment, South China Sea

Wang, Dunfan; Jin, Chong; Jin, Aimin; Lou, Zhanghua

doi:10.1007/s11802-020-4190-1

Cited by 1 publication

(1 citation statement)

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“…Enterobacteriaceae have been reported as epibionts of shallow-water sponges 64 , as intracellular pathogens of the hydrothermal vent mussel Bathymodiolus azoricus and as obligate biofilm-associates 65 . Despite their roles in anoxic environments where they reduce sulphate or thrive on fermentation, they may play a role in recycling of organic matter in oxic environments 66 , 67 , such as the carapace of M. alvisca . The observed discrepancies between activity and abundance of individual ASVs may be caused by one or several factors, including cell size, growth rate or nutrient availability.…”

Section: Discussionmentioning

confidence: 99%

Microbial epibiotic community of the deep-sea galatheid squat lobster Munidopsis alvisca

Leinberger

Milke

Christodoulou

et al. 2022

Sci Rep

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Life at hydrothermal vent sites is based on chemosynthetic primary producers that supply heterotrophic microorganisms with substrates and generate biomass for higher trophic levels. Often, chemoautotrophs associate with the hydrothermal vent megafauna. To investigate attached bacterial and archaeal communities on deep-sea squat lobsters, we collected ten specimens from a hydrothermal vent in the Guaymas Basin (Gulf of California). All animals were identified as Munidopsis alvisca via morphological and molecular classification, and intraspecific divergence was determined. Amplicon sequencing of microbial DNA and cDNA revealed significant differences between microbial communities on the carapaces of M. alvisca and those in ambient sea water. Major epibiotic bacterial taxa were chemoautotrophic Gammaproteobacteria, such as Thiotrichaceae and Methylococcaceae, while archaea were almost exclusively represented by sequences affiliated with Ca. Nitrosopumilus. In sea water samples, Marine Group II and III archaea and organoheterotrophic Alphaproteobacteria, Flavobacteriia and Planctomycetacia were more dominant. Based on the identified taxa, we assume that main metabolic processes, carried out by M. alvisca epibiota, include ammonia, methane and sulphide oxidation. Considering that M. alvisca could benefit from sulphide detoxification by its epibiota, and that attached microbes are supplied with a stable habitat in proximity to substrate-rich hydrothermal fluids, a mutualistic host-microbe relationship appears likely.

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Section: Discussionmentioning

confidence: 99%