Comparative Genomic Insights into the Evolution of Halobacteria-Associated "Candidatus Nanohaloarchaeota".

ABSTRACT: Members of the phylum "Candidatus Nanohaloarchaeota," a representative lineage within the DPANN superphylum, are characterized by their nanosized cells and symbiotic lifestyle with Halobacteria. However, the development of the symbiosis remains unclear. Here, we propose two novel families, "Candidatus Nanoanaerosalinaceae" and "Candidatus Nanohalalkaliarchaeaceae" in "Ca. Nanohaloarchaeota," represented by five dereplicated metagenome-assembled genomes obtained from hypersaline sediments or related enrichment cultures of soda-saline lakes. Phylogenetic analyses reveal that the two novel families are placed at the root of the family "Candidatus Nanosalinaceae," including the cultivated taxa. The two novel families prefer hypersaline sediments, and t

SUBMITTER: Zhao D 

PROVIDER: S-EPMC9765267 | biostudies-literature | 2022 Dec

REPOSITORIES: biostudies-literature