paraburkholderia elongata paraburkholderia elongata paraburkholderia elongata is a gram-negative bacterium belonging to the genus paraburkholderia. the type strain is p. elongata 5nt, which was isolated from the arnot research forest, near van etten, new york, using agar medium supplemented with soil-extracted, solubilized organic matter. the same isolation effort and methodology led to the isolation of p. solitsugae 1nt. p. elongata was named after its tendency to form elongated, filamentous cells when grown in concentrated growth media. phosphate concentration was found to regulate the conditional filamentation of p. elongata, resulting from the accumulation of intracellular polyphosphate. paraburkholderia elongata a scanning electron micrograph of paraburkholderia elongata cells in filamentous form grown in full strength tryptic soy broth and displayed against a backdrop of cellulose fibres scientific classification domain: bacteria phylum: pseudomonadota class: betaproteobacteria order: burkholderiales family: burkholderiaceae genus: paraburkholderia species: p. elongata binomial name paraburkholderia elongatawilhelm et al. 2020