Unexpected complexity of the ammonia monooxygenase in archaea DOI Creative Commons
Logan H. Hodgskiss, Michael Melcher, Melina Kerou

et al.

The ISME Journal, Journal Year: 2023, Volume and Issue: 17(4), P. 588 - 599

Published: Jan. 31, 2023

Abstract Ammonia oxidation, as the first step of nitrification, constitutes a critical process in global nitrogen cycle. However, fundamental knowledge its key enzyme, copper-dependent ammonia monooxygenase, is lacking, particular for environmentally abundant ammonia-oxidizing archaea (AOA). Here structure enzyme investigated by blue-native gel electrophoresis and proteomics from native membrane complexes two AOA. Besides known AmoABC subunits earlier predicted AmoX, new protein subunits, AmoY AmoZ, were identified. They are unique to AOA, highly conserved co-regulated, their genes linked other AMO subunit streamlined AOA genomes. Modeling in-gel cross-link approaches support an overall protomer similar distantly related bacterial particulate methane monooxygenase but also reveals clear differences extracellular domains enzyme. These data open avenues further structure-function studies this ecologically important nitrification complex.

Language: Английский

Alternative strategies of nutrient acquisition and energy conservation map to the biogeography of marine ammonia-oxidizing archaea DOI Creative Commons
Wei Qin, Yue Zheng, Feng Zhao

et al.

The ISME Journal, Journal Year: 2020, Volume and Issue: 14(10), P. 2595 - 2609

Published: July 7, 2020

Abstract Ammonia-oxidizing archaea (AOA) are among the most abundant and ubiquitous microorganisms in ocean, exerting primary control on nitrification nitrogen oxides emission. Although united by a common physiology of chemoautotrophic growth ammonia, corresponding high genomic habitat variability suggests tremendous adaptive capacity. Here, we compared 44 diverse AOA genomes, 37 from species cultivated samples collected across geographic locations seven assembled metagenomic sequences mesopelagic to hadopelagic zones deep ocean. Comparative analysis identified major marine genotypic groups having gene content correlated with their distinctive biogeographies. Phosphorus ammonia availabilities as well hydrostatic pressure were selective forces driving different oceanic regions. Notably, methylphosphonate biosynthetic genes span provinces, reinforcing importance for methane production Together, our combined comparative physiological, genomic, analyses provide comprehensive view biogeography globally radiation into vast range terrestrial habitats.

Language: Английский

Citations

86

A Critical Review on Nitrous Oxide Production by Ammonia-Oxidizing Archaea DOI
Lan Wu, Xueming Chen, Wei Wei

et al.

Environmental Science & Technology, Journal Year: 2020, Volume and Issue: 54(15), P. 9175 - 9190

Published: July 13, 2020

The continuous increase of nitrous oxide (N2O) in the atmosphere has become a global concern because its property as potent greenhouse gas. Given important role ammonia-oxidizing archaea (AOA) ammonia oxidation and their involvement N2O production, clear understanding knowledge on archaeal production is necessary for mitigation. Compared to bacterial by bacteria (AOB), AOA-driven pathways are less-well elucidated. In this Critical Review, we synthesized currently proposed combination with enzymology distinction, analyzed AOA species involved pathways, discussed relative contribution both natural anthropogenic environments, summarized factors affecting yield, compared distinctions among approaches used differentiate oxidizer-associated production. We, then, put forward perspectives future challenges further improve our putative enzymes potential identification order potentially achieve effective mitigations.

Language: Английский

Citations

73

Fungi stabilize multi‐kingdom community in a high elevation timberline ecosystem DOI Creative Commons
Teng Yang, Leho Tedersoo, Xu Liu

et al.

iMeta, Journal Year: 2022, Volume and Issue: 1(4)

Published: Aug. 15, 2022

Microbes dominate terrestrial ecosystems via their great species diversity and vital ecosystem functions, such as biogeochemical cycling mycorrhizal symbiosis. Fungi other organisms form diverse association networks. However, the roles of belonging to different kingdoms in multi-kingdom community networks have remained largely elusive. In light integrative microbiome initiative, we inferred multiple-kingdom biotic associations from high elevation timberline soils using SPIEC-EASI method. Biotic interactions among plants, nematodes, fungi, bacteria, archaea were surveyed at network levels. Compared single-kingdom networks, increased within-kingdom cross-kingdom edge numbers by 1012 10,772, respectively, well mean connectivity negative proportion 15.2 0.8%, respectively. Fungal involvement stability (i.e., resistance node loss) connectivity, but reduced modularity, when compared with those archaea. entire network, fungal nodes characterized significantly higher degree betweenness than bacteria. more often played role connector, linking modules. Consistently, structural equation modeling multiple regression on matrices corroborated "bridge" fungi level, plants soil biota. Overall, our findings suggest that can stabilize self-organization process The facilitate initiation carrying out studies natural reveal complex above- belowground linkages.

Language: Английский

Citations

62

Phylogenetic divergence and adaptation of Nitrososphaeria across lake depths and freshwater ecosystems DOI Open Access
Minglei Ren, Jianjun Wang

The ISME Journal, Journal Year: 2022, Volume and Issue: 16(6), P. 1491 - 1501

Published: Jan. 28, 2022

Language: Английский

Citations

38

Unexpected complexity of the ammonia monooxygenase in archaea DOI Creative Commons
Logan H. Hodgskiss, Michael Melcher, Melina Kerou

et al.

The ISME Journal, Journal Year: 2023, Volume and Issue: 17(4), P. 588 - 599

Published: Jan. 31, 2023

Abstract Ammonia oxidation, as the first step of nitrification, constitutes a critical process in global nitrogen cycle. However, fundamental knowledge its key enzyme, copper-dependent ammonia monooxygenase, is lacking, particular for environmentally abundant ammonia-oxidizing archaea (AOA). Here structure enzyme investigated by blue-native gel electrophoresis and proteomics from native membrane complexes two AOA. Besides known AmoABC subunits earlier predicted AmoX, new protein subunits, AmoY AmoZ, were identified. They are unique to AOA, highly conserved co-regulated, their genes linked other AMO subunit streamlined AOA genomes. Modeling in-gel cross-link approaches support an overall protomer similar distantly related bacterial particulate methane monooxygenase but also reveals clear differences extracellular domains enzyme. These data open avenues further structure-function studies this ecologically important nitrification complex.

Language: Английский

Citations

28