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Competition between heterotrophic and autotrophic nitrifiers for ammonia in chemostat cultures

机译：异养培养物中异养和自养硝化细菌对氨的竞争

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摘要

Mixed cultures of a heterotrophic nitrifier/aerobic denitrifier, Thiosphaera pantotropha, and an autotrophic nitrifier, Nitrosomonas europaea, were grown in chemostats under dual ammonia-and acetate limitation. Because of simultaneous nitrification and denitrification by T. pantotropha, the activity of the cultures was evaluated from nitrogen balances as complete as possible. Under most conditions studied, no interaction took place between the two bacteria. Only above a critical C/N ratio of 10.4, T. pantotropha was able to outcompete N. europaea for ammonia (dilution rate = 0.04 h−1). At dissolved oxygen concentrations below 10 μM, the autotroph became oxygen-limited and the heterotroph dominated in the culture. Moreover, when the dilution rate was increased to 0.065 h−1, N. europaea could not maintain itself successfully in the chemostat, even when the C/N ratio was as low as 2.2. Nitrification by T. pantotropha was equivalent to that of N. europaea when the cell ratio of heterotrophs/autotrophs was 250. The relevance of these observations to the nitrogen cycle in natural environments is discussed.

机译：在氨氮和乙酸盐的双重限制下，在恒化器中生长了异养硝化器/好氧反硝化器Thiosphaera pantotropha和自养硝化器Nitrosomonas europaea的混合培养物。由于泛锥虫同时进行硝化和反硝化作用，因此从氮平衡中尽可能全面地评估了培养物的活性。在大多数研究条件下，两种细菌之间没有相互作用。仅在高于临界C / N比10.4的情况下，泛营养球菌才能超越欧洲猪笼草的氨气（稀释率= 0.04 h-1）。在低于10μM的溶解氧浓度下，自养生物受氧气限制，异养生物在培养物中占主导地位。此外，当稀释率增加到0.065 h-1时，即使C / N比低至2.2，欧洲猪笼草也无法成功地保持其自身在恒化器中的状态。当异养生物/自养生物的细胞比为250时，泛营养菌的硝化作用等同于欧洲猪笼草的硝化作用。讨论了这些观察结果与自然环境中氮循环的相关性。

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van Niel, Ed; Arts, P.A.M.; Wesselink, B.J.; Robertson, L.A.; Kuenen, J.G.;
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年度 1993
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正文语种 eng
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1. A comparison of NO and N2O production by the autotrophic nitrifier Nitrosomonas europaea and the heterotrophic nitrifier Alcaligenes faecalis. [J] . I C Anderson, M Poth, J Homstead, Applied and Environmental Microbiology . 1993,第11期

机译：自养硝化器Nitrosomonas europaea和异养硝化器粪便Alcaligenes faecalis产生NO和N2O的比较。
2. Engineering analysis of the stoichiometry of photoautotrophic, autotrophic, and heterotrophic removal of ammonia-nitrogen in aquaculture systems. [J] . Ebeling J M, Timmons M B, Bisogni J J Aquaculture . 2006,第1a4期

机译：水产养殖系统中光自养，自养和异养去除氨氮的化学计量的工程分析。
3. Engineering analysis of the stoichiometry of photoautotrophic, autotrophic, and heterotrophic removal of ammonia-nitrogen in aquaculture systems. [J] . Ebeling J M, Timmons M B, Bisogni J J Aquaculture . 2006,第1a4期

机译：水产养殖系统中光自养，自养和异养去除氨氮的化学计量的工程分析。
4. An Engineering Analysis of the Stoichiometry of Autotrophic, Heterotrophic Bacterial Control of Ammonia-Nitrogen in Zero-Exchange Production [C] . James M. Ebeling, Michael B. Timmons, J.J. Bisogni International Conference on Recirculating Aquaculture . 2007

机译：零交换生产氨 - 氮的自养，异养细菌控制的化学计量工程分析
5. Tillage and fertilization influences on autotrophic nitrifiers in agricultural soil. [D] . Liu, Shuang. 2016

机译：耕作和施肥对农业土壤中自养硝化器的影响。
6. A comparison of NO and N2O production by the autotrophic nitrifier Nitrosomonas europaea and the heterotrophic nitrifier Alcaligenes faecalis. [O] . I C Anderson, M Poth, J Homstead, 1993

机译：自养硝化器Nitrosomonas europaea和异养硝化器粪便Alcaligenes faecalis产生NO和N2O的比较。
7. Competition between heterotrophic and autotrophic nitrifiers for ammonia in chemostat cultures [O] . E VANNIEL, P ARTS, B WESSELINK, 1993

机译：化学抑制剂氨的异养和自养氮杂物的竞争

Competition between heterotrophic and autotrophic nitrifiers for ammonia in chemostat cultures

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