Biochemistry shapes growth kinetics of nitrifiers and defines their activity under specific environmental conditions.
Biochemistry shapes growth kinetics of nitrifiers and defines their activity under specific environmental conditions.
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DOI：
10.1002/bit.28045
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发表时间：
2022-05
影响因子：
3.8
通讯作者：
Gonzalez-Cabaleiro, Rebeca
中科院分区：
文献类型：
--
作者：
Martinez-Rabert, Eloi;Smith, Cindy J.;Sloan, William T.;Gonzalez-Cabaleiro, Rebeca
是否有可能找到定义微生物生长的参数之间的趋势，以帮助我们解释巨大的微生物多样性？通过一个广泛的硝化菌动力学参数数据库，我们分析了是否可以预测和解释特定硝化菌种群的优势。我们的结论是，总的来说，氨氧化古生菌(AOA)的生长量(YXS)和亲氨性(A0NH3)高于细菌(AOB)，而生长速率(µmax)低于细菌(AOB)，这可以解释它们在贫营养环境中的优势地位。然而，每摩尔氨的能量收获量最大的COAMMOX(CMX)和一些AOB具有比一些AOA更高的a0NH3和更低的µmax。虽然我们能够将亚硝酸盐氧化细菌(NOB)的特定末端氧化酶的存在与观察到的氧亲和力(A0O2)联系起来，但对于AOB却没有观察到这种相关性。此外，还讨论了在氧气限制环境中AOB对NOB的优势地位。此外，a0O2值的统计方差比氨和亚硝酸盐亲和力的值低，这表明氮气限制是一个更强的选择压力。总体而言，硝化组内的特定生长策略没有通过已报道的动力学参数确定，这可能表明，基本的生物化学差异是潜在的动力学参数的原因。对定义微生物生长的动力学参数进行了广泛的分析，以更好地了解好氧硝化作用主要贡献者之间的竞争和合作关系。从这项分析中，Martinez-Rabert和他的同事表明，特定的代谢策略使不同的种群得以生存，以及生化差异和测量的生长动力学参数之间的关系。此外，它解释了我们无法完全描述参与好氧生物地球化学氮循环的不同种群之间的生态位差异。
Is it possible to find trends between the parameters that define microbial growth to help us explain the vast microbial diversity? Through an extensive database of kinetic parameters of nitrifiers, we analyzed if the dominance of specific populations of nitrifiers could be predicted and explained. We concluded that, in general, higher growth yield (YXS) and ammonia affinity (a0 NH3) and lower growth rate (µmax) are observed for ammonia‐oxidizing archaea (AOA) than bacteria (AOB), which would explain their considered dominance in oligotrophic environments. However, comammox (CMX), with the maximum energy harvest per mole of ammonia, and some AOB, have higher a0 NH3 and lower µmax than some AOA. Although we were able to correlate the presence of specific terminal oxidases with observed oxygen affinities (a0 O2) for nitrite‐oxidizing bacteria (NOB), that correlation was not observed for AOB. Moreover, the presumed dominance of AOB over NOB in O2‐limiting environments is discussed. Additionally, lower statistical variance of a0 O2 values than for ammonia and nitrite affinities was observed, suggesting nitrogen limitation as a stronger selective pressure. Overall, specific growth strategies within nitrifying groups were not identified through the reported kinetic parameters, which might suggest that mostly, fundamental differences in biochemistry are responsible for underlying kinetic parameters. An extensive analysis of kinetic parameter that define microbial growth was developed to understand better the relationships of competition and collaboration of the main contributors of aerobic nitrification. From this analysis, Martinez‐Rabert and co‐workers show that specific metabolic strategies enabling the survival of different populations and also a relationship between biochemical differences and measured growth kinetic parameters. Moreover, it explains our inability to fully describe ecological niche differentiation between different populations involved in the aerobic biogeochemical nitrogen cycle.
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影响因子：
11
作者：
Gonzalez-Cabaleiro, Rebeca;Ofiteru, Irina D.;Rodriguez, Jorge
通讯作者：
Rodriguez, Jorge
影响因子：
5.1
作者：
Hoff, Josef;Daniel, Benjamin;Fritz, Georg
通讯作者：
Fritz, Georg
氨氧化古菌比反硝化菌更能抵抗酸性亚热带森林土壤中的季节性降水变化
影响因子：
5.2
作者：
Chen J;Nie Y;Liu W;Wang Z;Shen W
通讯作者：
Shen W
影响因子：
4.4
作者：
Jung, Man-Young;Park, Soo-Je;Rhee, Sung-Keun
通讯作者：
Rhee, Sung-Keun
影响因子：
4.4
作者：
Daims, H;Nielsen, JL;Wagner, M
通讯作者：
Wagner, M