"Aquaspirillum denitrificans" Grabovich 1990 Dataset NCBI Taxonomy Classification phylum Pseudomonadota class Betaproteobacteria order Neisseriales family Aquaspirillaceae genus Aquaspirillum species Aquaspirillum denitrificans Name Homonyms Aquaspirillum denitrificans "Aquaspirillum denitrificans" Grabovich 1990