Fig. 4

Phylogenomic placement of ABT genomes using 37 housekeeping single-copy genes. a Phylogenetic tree of 298 NCBI genomes annotated as Thaumarchaeota and eight ABT genomes. Aigarchaeota were identified and used as the outgroup. Black, brown and blue ranges distinguish whether organisms are ammonia-oxidizing Archaea (AOA) and their typical habitats (terrestrial vs marine). Strongly supported branches as described in the Materials and Methods section are indicated with black dots. b Magnified view of the branches placing the ABT (Ca. Nitrosodeserticola) genomes and its sister group Ca. Nitrosocosmicus. Strongly supported branches as described in the Materials and Methods section are indicated with black dots. c Lower-left (blue) triangle of the matrix corresponds to FastANI between genomes, where gray values indicate below calculation threshold (80% identity). Upper-right (red) triangle of the matrix corresponds to 16S rRNA gene identity values, where gray values are used for genomic bins without a 16S rRNA gene. d Lower-left (blue) triangle corresponds to the amino acid identity (AAI) and upper-right (red) triangle corresponds to the Orthologous Fraction (OF) between a pair of compared genomes