Physiological and metabolic responses of chemolithoautotrophic NO3− reducers to high hydrostatic pressure
Physiological and metabolic responses of chemolithoautotrophic NO3− reducers to high hydrostatic pressure
复制标题
化能自养型NO3还原剂对高静水压的生理和代谢反应
DOI:
10.1111/gbi.12522
复制
发表时间:
2022
期刊:
影响因子:
3.7
通讯作者:
Foustoukos, Dionysis I.
中科院分区:
文献类型:
--
作者:
Pérez‐Rodríguez, Ileana;Sievert, Stefan M.;Fogel, Marilyn L.;Foustoukos, Dionysis I.
We investigated the impact of pressure on thermophilic, chemolithoautotrophic NO3− reducing bacteria of the phylaCampylobacterotaandAquificotaisolated from deep‐sea hydrothermal vents. Batch incubations at 5 and 20 MPa resulted in decreased NO3− consumption, lower cell concentrations, and overall slower growth inCaminibacter mediatlanticus(Campylobacterota) andThermovibrio ammonificans(Aquificota), relative to batch incubations near standard pressure (0.2 MPa) conditions. Nitrogen isotope fractionation effects from chemolithoautotrophic NO3− reduction by both microorganisms were, on the contrary, maintained under all pressure conditions. Comparable chemolithoautotrophic NO3− reducing activities between previously reported natural hydrothermal vent fluid microbial communities dominated byCampylobacterotaat 25 MPa andCampylobacterotalaboratory isolates at 0.2 MPa, suggest robust similarities in cell‐specific NO3− reduction rates and doubling times between microbial populations and communities growing maximally under similar temperature conditions. Physiological and metabolic comparisons of our results with other studies of pressure effects on anaerobic chemolithoautotrophic processes (i.e., microbial S0‐oxidation coupled to Fe(III) reduction and hydrogenotrophic methanogenesis) suggest that anaerobic chemolithoautotrophs relying on oxidation–reduction (redox) reactions that yield higher Gibbs energies experience larger shifts in cell‐specific respiration rates and doubling times at increased pressures. Overall, our results advance understanding of the role of pressure, its relationship with temperature and redox conditions, and their effects on seafloor chemolithoautotrophic NO3− reduction and other anaerobic chemolithoautotrophic processes.
登录
查看更多内容
DOI:
10.1073/pnas.1206632109
发表时间:
2012-08-21
影响因子:
11.1
作者:
Eecke, Helene C. Ver;Butterfield, David A.;Holden, James F.
通讯作者:
Holden, James F.
影响因子:
5.2
作者:
G. Oliver;A. Cario;K. Rogers
通讯作者:
K. Rogers
影响因子:
5.1
作者:
Nakagawa, S;Takai, K;Sako, Y
通讯作者:
Sako, Y
影响因子:
4.4
作者:
C. Taylor;H. Jannasch
通讯作者:
H. Jannasch
DOI:
10.3133/tm5d4
发表时间:
2018
期刊:
Techniques and Methods
影响因子:
--
作者:
C. Johnson;C. A. Stricker;Cayce A. Gulbransen;Matthew P. Emmons
通讯作者:
Matthew P. Emmons