- Castellaniella gen. nov., to accommodate the phylogenetic lineage of Alcaligenes defragrans, and proposal of Castellaniella defragrans gen. nov., comb. nov. and Castellaniella denitrificans sp. nov. Kämpfer, P., Denger, K., Cook, A.M., Lee, S.T., Jäckel, U., Denner, E.B., Busse, H.J. Int. J. Syst. Evol. Microbiol. (2006)