TY - JOUR
T1 - Highly diverse Asgard archaea participate in organic matter degradation in coastal sediments
AU - Cai, Mingwei
AU - Liu, Yang
AU - Yin, Xiuran
AU - Zhou, Zhichao
AU - Friedrich, Michael W.
AU - Richter-Heitmann, Tim
AU - Nimzyk, Rolf
AU - Kulkarni, Ajinkya
AU - Wang, Xiaowen
AU - Li, Wenjin
AU - Pan, Jie
AU - Yang, Yuchun
AU - Gu, Ji-Dong
AU - Li, Meng
PY - 2019
Y1 - 2019
N2 - Asgard 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 textquotedblleftGerdarchaeotatextquotedblright. 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 WoodtextendashLjungdahl 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.
AB - Asgard 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 textquotedblleftGerdarchaeotatextquotedblright. 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 WoodtextendashLjungdahl 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.
U2 - 10.1101/858530
DO - 10.1101/858530
M3 - 文章
JO - bioRxiv
JF - bioRxiv
ER -