Figure 1

Schematic phylogeny adapted from [29] showing the relationship between the main archaeal phyla for which completely sequenced genomes are available in databases. Motility or non-motility by the mean of a flagellum of each organism according to [21] is indicated by M and NM, respectively (NA is used when no information is available). Black circles and open circles indicate the presence or the absence of flagellum components coding gene in the genomes of the considered organisms, respectively. Red rectangles indicate the presence of flagellum component coding genes in organisms described as non-motile whereas yellow rectangles indicate the absence of flagellum component coding genes in organisms described as motile.