Archaea

Thiel, Volker

doi:10.1007/978-1-4020-9212-1_11

Cited by 2 publications

(1 citation statement)

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“…2) further supports aerobic respiration as important dissimilatory pathway. Besides, Gerdarchaeota are equipped with enzymes for the conversion of AsO 4 3- to (CH 3 ) n -As, thus they could remove the toxic As(V) and As(III), which can disrupt oxidative phosphorylation and inhibit respiratory enzymes 28 .…”

Section: Resultsmentioning

confidence: 99%

Highly diverse Asgard archaea participate in organic matter degradation in coastal sediments

Cai

Liu

Yin

et al. 2019

Preprint

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ABSTRACTAsgard is an archaeal superphylum that might hold the key to understand the origin of eukaryotes, but its diversity and ecological roles remain poorly understood. Here, we reconstructed 15 metagenomic-assembled genomes (MAGs) from coastal sediments covering most known Asgard archaea and a novel group, which is proposed as a new Asgard phylum named as the “Gerdarchaeota”. Genomic analyses predict that Gerdarchaeota are facultative anaerobes in utilizing both organic and inorganic carbon. Unlike their closest relatives Heimdallarchaeota, Gerdarchaeota have genes encoding for cellulase and enzymes involving in the tetrahydromethanopterin-based Wood–Ljungdahl pathway. Transcriptomic evidence showed that all known Asgard archaea are capable of degrading organic matter, including peptides, amino acids and fatty acids, in different ecological niches in sediments. Overall, this study broadens the diversity of the mysterious Asgard archaea and provides evidence for their ecological roles in coastal sediments.

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Section: Resultsmentioning

confidence: 99%