Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance
{"title":"氨氧化古菌亚硝基藻对含氧海水中碘的氧化态无影响","authors":"Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance","doi":"10.1111/1758-2229.70168","DOIUrl":null,"url":null,"abstract":"<p>We investigate the potential for the globally distributed marine ammonia oxidising archaeon (AOA) <i>Nitrosopumilus maritimus</i> to oxidise iodide (I<sup>−</sup>), with the aim of identifying a key driver of seawater iodate (IO<sub>3</sub><sup>−</sup>) renewal. Batch cultures of <i>N. maritimus</i> grew well in concentrations of 0.1 to 1 mM NH<sub>4</sub><sup>+</sup> and from 0.0001 to 1 mM I<sup>−</sup>. There was near 100% conversion of ammonium to nitrite over an 8-day growth period. No loss of I<sup>−</sup> or production of IO<sub>3</sub><sup>−</sup> was detected in cultures where I<sup>−</sup> was added, indicating that <i>N. maritimus</i> is unable to drive I<sup>−</sup> oxidation under the tested conditions. This contrasts with previous observations of I<sup>−</sup> oxidation by ammonium oxidising bacteria (AOB). We explore whether differences between the metabolism of AOA and AOB could explain their differing actions on I<sup>−</sup>. <i>N. maritimus</i> cultures grown with the equivalent IO<sub>3</sub><sup>−</sup> concentrations also showed no reduction in [IO<sub>3</sub><sup>−</sup>]. In addition, the growth of the <i>N. maritimus</i> culture was unaffected by inorganic iodine concentrations over 1000 times higher than in ambient seawater, suggesting a resilience to high iodine. These results suggest that AOA might have very little role in inorganic iodine turnover in the global ocean.</p>","PeriodicalId":163,"journal":{"name":"Environmental Microbiology Reports","volume":"17 4","pages":""},"PeriodicalIF":2.7000,"publicationDate":"2025-08-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://enviromicro-journals.onlinelibrary.wiley.com/doi/epdf/10.1111/1758-2229.70168","citationCount":"0","resultStr":"{\"title\":\"The Ammonia Oxidising Archaeon Nitrosopumilus maritimus Does Not Alter Iodine Oxidation State in Oxic Seawater\",\"authors\":\"Alison L. Webb, Barbora Oudova-Rivera, Martyn Ward, Lucy J. Carpenter, Laura E. Lehtovirta-Morley, Rosie Chance\",\"doi\":\"10.1111/1758-2229.70168\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<p>We investigate the potential for the globally distributed marine ammonia oxidising archaeon (AOA) <i>Nitrosopumilus maritimus</i> to oxidise iodide (I<sup>−</sup>), with the aim of identifying a key driver of seawater iodate (IO<sub>3</sub><sup>−</sup>) renewal. Batch cultures of <i>N. maritimus</i> grew well in concentrations of 0.1 to 1 mM NH<sub>4</sub><sup>+</sup> and from 0.0001 to 1 mM I<sup>−</sup>. There was near 100% conversion of ammonium to nitrite over an 8-day growth period. No loss of I<sup>−</sup> or production of IO<sub>3</sub><sup>−</sup> was detected in cultures where I<sup>−</sup> was added, indicating that <i>N. maritimus</i> is unable to drive I<sup>−</sup> oxidation under the tested conditions. This contrasts with previous observations of I<sup>−</sup> oxidation by ammonium oxidising bacteria (AOB). We explore whether differences between the metabolism of AOA and AOB could explain their differing actions on I<sup>−</sup>. <i>N. maritimus</i> cultures grown with the equivalent IO<sub>3</sub><sup>−</sup> concentrations also showed no reduction in [IO<sub>3</sub><sup>−</sup>]. In addition, the growth of the <i>N. maritimus</i> culture was unaffected by inorganic iodine concentrations over 1000 times higher than in ambient seawater, suggesting a resilience to high iodine. 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The Ammonia Oxidising Archaeon Nitrosopumilus maritimus Does Not Alter Iodine Oxidation State in Oxic Seawater
We investigate the potential for the globally distributed marine ammonia oxidising archaeon (AOA) Nitrosopumilus maritimus to oxidise iodide (I−), with the aim of identifying a key driver of seawater iodate (IO3−) renewal. Batch cultures of N. maritimus grew well in concentrations of 0.1 to 1 mM NH4+ and from 0.0001 to 1 mM I−. There was near 100% conversion of ammonium to nitrite over an 8-day growth period. No loss of I− or production of IO3− was detected in cultures where I− was added, indicating that N. maritimus is unable to drive I− oxidation under the tested conditions. This contrasts with previous observations of I− oxidation by ammonium oxidising bacteria (AOB). We explore whether differences between the metabolism of AOA and AOB could explain their differing actions on I−. N. maritimus cultures grown with the equivalent IO3− concentrations also showed no reduction in [IO3−]. In addition, the growth of the N. maritimus culture was unaffected by inorganic iodine concentrations over 1000 times higher than in ambient seawater, suggesting a resilience to high iodine. These results suggest that AOA might have very little role in inorganic iodine turnover in the global ocean.
期刊介绍：
The journal is identical in scope to Environmental Microbiology, shares the same editorial team and submission site, and will apply the same high level acceptance criteria. The two journals will be mutually supportive and evolve side-by-side.
Environmental Microbiology Reports provides a high profile vehicle for publication of the most innovative, original and rigorous research in the field. The scope of the Journal encompasses the diversity of current research on microbial processes in the environment, microbial communities, interactions and evolution and includes, but is not limited to, the following:
the structure, activities and communal behaviour of microbial communities
microbial community genetics and evolutionary processes
microbial symbioses, microbial interactions and interactions with plants, animals and abiotic factors
microbes in the tree of life, microbial diversification and evolution
population biology and clonal structure
microbial metabolic and structural diversity
microbial physiology, growth and survival
microbes and surfaces, adhesion and biofouling
responses to environmental signals and stress factors
modelling and theory development
pollution microbiology
extremophiles and life in extreme and unusual little-explored habitats
element cycles and biogeochemical processes, primary and secondary production
microbes in a changing world, microbially-influenced global changes
evolution and diversity of archaeal and bacterial viruses
new technological developments in microbial ecology and evolution, in particular for the study of activities of microbial communities, non-culturable microorganisms and emerging pathogens.
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