Fig. 3From: Genomic evidence of the illumination response mechanism and evolutionary history of magnetotactic bacteria within the Rhodospirillaceae family(a) Average number of photoreceptors per cell in MTB, phototrophic bacteria and nonphototrophic nonmagnetotactic bacteria within the family Rhodospirillaceae. Photoreceptors were sorted by the following types: cryptochrome, PYP, PHP, LOV and BLUF domain-containing proteins. (Note: the number represents the total number of a certain type of photoreceptor divided by the bacterial genome number). (b) Photoreceptors predicted from the completely sequenced MTB strains XM-1, MSR-1, AMB-1, QH-2, phototrophic bacteria strains S1 and SW and nonphototrophic nonmagnetotactic bacteria Az39 and B510. (c) Phylogenetic trees based on the PHY domain-containing photosensor protein sequences from the genomes of the Rhodospirillaceae familyBack to article page