aestuariimicrobium aestuariimicrobium aestuariimicrobium is a singleton genus in the phylum actinomycetota (bacteria), whose first member, namely aestuariimicrobium kwangyangense, was isolated from a diesel contaminated coastal site. like all actinobacteria, it is gram-positive and with a high cg content (69%). it is rod/coccoid shaped bacterium whose main quinone is menaquinone-7 (mk7). for the gammaproteobacterium aestuariibacter, see aestuariibacter. aestuariimicrobium scientific classification domain: bacteria phylum: actinomycetota class: actinomycetia order: propionibacteriales family: propionibacteriaceae genus: aestuariimicrobiumjung et al. 2007 type species a. kwangyangensejung et al. 2007 species "a. ganziense" geng et al. 2021 a. kwangyangense jung et al. 2007 a. soli chen et al. 2018 etymology the name aestuariimicrobium derives from the latin noun aestuarium, the part of the sea coast which, during the flood-tide, is overflowed, but at ebb-tide is left covered with mud or slime, a tidal flat; neo-latin neuter gender noun microbium, microbe; neo-latin neuter gender noun aestuariimicrobium, a microbe isolated from tidal flat. the adjective kwangyangense, means of or pertaining to kwangyang, korea, from where the type strain was isolated.