kaistia algarum kaistia algarum kaistia algarum is a gram-negative, strictly aerobic and non-motile bacterium from the genus of kaistia which has been isolated from the alga paulinella chromatophora. kaistia algarum scientific classification domain: bacteria phylum: pseudomonadota class: alphaproteobacteria order: hyphomicrobiales family: kaistiaceae genus: kaistia species: k. algarum binomial name kaistia algarumlee and jeon 2018 type strain lyh11