Farag, Ibrahim F.


Publications
6

Occurrence, Diversity, and Genomes of “ Candidatus Patescibacteria” along the Early Diagenesis of Marine Sediments

Citation
Zhao et al. (2022). Applied and Environmental Microbiology 88 (24)
Names
Ca. Patescibacteria
Abstract
Ultrasmall-celled “ Ca. Patescibacteria” have been estimated to account for one-quarter of the total microbial diversity on Earth, the parasitic lifestyle of which may exert a profound control on the overall microbial population size of the local ecosystems. However, their diversity and metabolic functions in marine sediments, one of the largest yet understudied ecosystems on Earth, remain virtually uncharacterized.

Sifarchaeota ,” a Novel Asgard Phylum from Costa Rican Sediment Capable of Polysaccharide Degradation and Anaerobic Methylotrophy

Citation
Farag et al. (2021). Applied and Environmental Microbiology 87 (9)
Names
“Sifarchaeum subterraneum” “Sifarchaeum” Ca. Sifarchaeum marinoarchaea Ca. Sifarchaeum subterraneus “Sifarchaeota”
Abstract
The exploration of deep marine sediments has unearthed many new lineages of microbes. The finding of this novel phylum of Asgard archaea is important, since understanding the diversity and evolution of Asgard archaea may inform also about the evolution of eukaryotic cells. The comparison of metabolic potentials of the Asgard archaea can help inform about selective pressures the lineages have faced during evolution.

Genome-resolved metagenomics reveals site-specific diversity of episymbiotic CPR bacteria and DPANN archaea in groundwater ecosystems

Citation
He et al. (2021). Nature Microbiology 6 (3)
Names
“Montesoliibacteriota”
Abstract
AbstractCandidate phyla radiation (CPR) bacteria and DPANN archaea are unisolated, small-celled symbionts that are often detected in groundwater. The effects of groundwater geochemistry on the abundance, distribution, taxonomic diversity and host association of CPR bacteria and DPANN archaea has not been studied. Here, we performed genome-resolved metagenomic analysis of one agricultural and seven pristine groundwater microbial communities and recovered 746 CPR and DPANN genomes in total. The pr

“Sifarchaeota” a novel Asgard phylum capable of polysaccharide degradation and anaerobic methylotrophy

Citation
Farag et al. (2020).
Names
“Sifarchaeum” Ca. Sifarchaeum marinoarchaea Ca. Sifarchaeum subterraneus “Sifarchaeota”
Abstract
AbstractThe Asgard superphylum is a deeply branching monophyletic group of Archaea, recently described as some of the closest relatives of the eukaryotic ancestor. The wide application of genomic analyses from metagenome sequencing has established six distinct phyla, whose genomes encode for diverse metabolic capacities and play important biogeochemical and ecological roles in marine sediments. Here, we describe two metagenome-assembled genomes (MAGs) recovered from deep marine sediments off Cos