Cited by 43Microbial Community Ecology and PhysiologyPolar Research and EcologyMarine Biology and Ecology Research

Novel psychropiezophilic oceanospirillales species profundimonas piezophila gen. nov., sp. nov. isolated from the deep-sea environment of the puerto rico trench

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Cao, Yi, Chastain, Roger A., Eloe, Emiley A., Nogi, Yuichi, Kato, Chiaki, Bartlett, Douglas H.·2014·Applied and Environmental Microbiology

Abstract

The diversity of deep-sea high-pressure-adapted (piezophilic) microbes in isolated monoculture remains low. In this study, a novel obligately psychropiezophilic bacterium was isolated from seawater collected from the Puerto Rico Trench at a depth of ∼6,000 m. This isolate, designated YC-1, grew best in a nutrient-rich marine medium, with an optimal growth hydrostatic pressure of 50 MPa (range, 20 to 70 MPa) at 8°C. Under these conditions, the maximum growth rate was extremely slow, 0.017 h(-1), and the maximum yield was 3.51 × 10(7) cells ml(-1). Cell size and shape changed with pressure, shifting from 4.0 to 5.0 μm in length and 0.5 to 0.8 μm in width at 60 MPa to 0.8- to 1.0-μm diameter coccoid cells under 20 MPa, the minimal pressure required for growth. YC-1 is a Gram-negative, facultatively anaerobic heterotroph. Its predominant cellular fatty acids are the monounsaturated fatty acids (MUFAs) C16:1 and C18:1. Unlike many other psychropiezophiles, YC-1 does not synthesize any polyunsaturated fatty acids (PUFAs). Phylogenetic analysis placed YC-1 within the family of Oceanospirillaceae, closely related to the uncultured symbiont of the deep-sea whale bone-eating worms of the genus Osedax. In common with some other members of the Oceanospirillales, including those enriched during the Deepwater Horizon oil spill, YC-1 is capable of hydrocarbon utilization. On the basis of its characteristics, YC-1 appears to represent both a new genus and a new species, which we name Profundimonas piezophila gen. nov., sp. nov.

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  1. [25]25. Baumann P, Baumann L. 1979. The marine gram-negative eubacteria: genera Photobacterium , Beneckea , Alteromonas , Pseudomonas and Alcaligenes , p 1302-1331. In Starr MP, Stolp H, Truper HG, Balows A, Schlegel HH(ed), The prokaryotes. Springer-Verlag, New York, NY.

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Authors
Cao, Y., Chastain, R. A., Eloe, E. A., Nogi, Y., Kato, C., & Bartlett, D. H.
Affiliations
  • Scripps Institution of Oceanography (US)
  • Japan Agency for Marine-Earth Science and Technology (JP)
Venue
Applied and Environmental Microbiology
Published
2014-01
Volume
80
Issue
1
Pages
54-60
ISSN
  • 0099-2240 (ISSN-L)
  • 1098-5336
OpenAlex
W1974189786
Cited by
43
References
44
Citations by year
2026: 1 · 2025: 3 · 2024: 2 · 2023: 3 · 2022: 1 · 2021: 7 · 2020: 3 · 2019: 5 · 2018: 8 · 2017: 4 · 2016: 3 · 2015: 3
FWCI
1.76
Type
journal article
Language
en
Open access
Locations
  • Applied and Environmental Microbiology (publishedVersion)
  • PubMed Central (publishedVersion)
  • PubMed (publishedVersion)
  • Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by-nc-nd)
Funders
National Science Foundation (0827051, 0801973)
Topics
  • Physical Sciences › Environmental Science › Ecology › Microbial Community Ecology and Physiology
  • Physical Sciences › Environmental Science › Ecology › Polar Research and Ecology
  • Physical Sciences › Earth and Planetary Sciences › Oceanography › Marine Biology and Ecology Research
Keywords
novel bacterial genus, novel bacterial species, deep-sea bacteria, Puerto Rico Trench, monounsaturated fatty acids, hydrocarbon utilization, Deepwater Horizon oil spill
MeSH terms
DNA, Bacterial, DNA, Ribosomal, Fatty Acids, Hydrostatic Pressure, Molecular Sequence Data, Phylogeny, Puerto Rico, RNA, Ribosomal, 16S, Seawater, Temperature, Cluster Analysis, Sequence Analysis, DNA, Oceanospirillaceae

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