niastella populi niastella populi niastella populi is a gram-negative, strictly aerobic and non-motile bacterium from the genus of niastella which has been isolated from soli from a populus euphratica forest in xinjiang in china. niastella populi scientific classification domain: bacteria phylum: bacteroidota class: chitinophagia order: chitinophagales family: chitinophagaceae genus: niastella species: n. populi binomial name niastella populizhang et al. 2010 type strain cctcc ab 208238, kctc 22560, thyl-44