polynucleobacter hirudinilacicola polynucleobacter hirudinilacicola polynucleobacter hirudinilacicola is an aerobic, chemo-organotrophic, non-motile, free-living bacterium of the genus polynucleobacter. polynucleobacter hirudinilacicola scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: burkholderiaceae genus: polynucleobacter species: p. hirudinilacicola binomial name polynucleobacter hirudinilacicolahahn et al. 2018 type strain mwh-egelm1-30-b4 =dsm 23911 =lmg 30144 synonyms polynucleobacter necessarius subsp. asymbioticus mwh-egelm1-30-b4, polynucleobacter sp. mwh-egelm1-30-b4, strain mwh-egelm1-30-b4 the type strain was isolated from a small alkaline lake located in austria. the genome sequence of the strain was fully determined. the type strain dwells as a free-living, planktonic bacterium in the water column of the lake, thus is part of freshwater bacterioplankton. among the described polynucleobacter species, p. hirudinilacicola is closest related to p. campilacus.