gemmobacter nectariphilus gemmobacter nectariphilus gemmobacter nectariphilus is a bacterium from the genus of gemmobacter which has been isolated from activated sludge from japan. gemmobacter nectariphilus scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: rhodobacterales family: rhodobacteraceae genus: gemmobacter species: g. nectariphilus binomial name gemmobacter nectariphilus(tanaka et al. 2004) chen et al. 2013 type strain ast4, dsm 15620, jcm 11959, nbrc 100046 synonyms catellatibacterium nectariphilumcatellibacterium nectariphilum