2021
DOI: 10.3390/genes12030391
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Two Archaeal Metagenome-Assembled Genomes from El Tatio Provide New Insights into the Crenarchaeota Phylum

Abstract: A phylogenomic and functional analysis of the first two Crenarchaeota MAGs belonging to El Tatio geysers fields in Chile is reported. A soil sample contiguous to a geothermal activity exposed lagoon of El Tatio was used for shotgun sequencing. Afterwards, contigs were binned into individual population-specific genomes data. A phylogenetic placement was carried out for both MAG 9-5TAT and MAG 47-5TAT. Then functional comparisons and metabolic reconstruction were carried out. Results showed that both MAG 9-5TAT … Show more

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Cited by 8 publications
(5 citation statements)
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“…Crenarchaeota has been reported as the major archaeal phylum in both Antarctic and Arctic archaeal studies [41,42], and it was also the major archaeal phylum in previous Svalbard archaeal studies [34]. This is a diverse and widespread phylum that is mainly characterized by acidophilic, thermophilic, and anaerobic properties [43]. It also contains ammonia-oxidizing archaea, which are important players in the natural nitrogen cycle [44].…”
Section: Discussionmentioning
confidence: 98%
“…Crenarchaeota has been reported as the major archaeal phylum in both Antarctic and Arctic archaeal studies [41,42], and it was also the major archaeal phylum in previous Svalbard archaeal studies [34]. This is a diverse and widespread phylum that is mainly characterized by acidophilic, thermophilic, and anaerobic properties [43]. It also contains ammonia-oxidizing archaea, which are important players in the natural nitrogen cycle [44].…”
Section: Discussionmentioning
confidence: 98%
“…The clusters of Crenarchaeota differ in sediment archaeal MA and sediment archaeal ML networks, which may be pH influenced ( Yao et al, 2019 ). The energy metabolism of Crenarchaeota was dependent on the pH of the environment ( Santos et al, 2021 ), and submerged macrophyte loss alters sediment acidity and alkalinity, so pH may alter ecological clusters either directly or indirectly ( Lauber et al, 2009 ). Compared to water bacteria, the networks structure of archaea in the water were virtually unaffected by the submerged macrophyte.…”
Section: Discussionmentioning
confidence: 99%
“…It was also reported as the major archaea of the Ross Sea region [ 51 ], Helliwell Hills [ 52 ], and Dry Valleys [ 53 ] in Antarctica. Crenarchaeota is often found to be a major archaeal phylum that is anaerobic, thermophilic, and acidophilic [ 54 ] and includes widely existing ammonia-oxidizing archaea [ 55 , 56 ]. Candidatus Nitrososphaera [ 57 ] and Candidatus Nitrocosmicus [ 58 ] were found to be the dominant genera, also indicating that ammonia-oxidizing archaea were widespread in this region to participate in the nitrogen cycle process.…”
Section: Discussionmentioning
confidence: 99%