Proposal that Agrobacterium radiobacter has priority over Agrobacterium tumefaciens. Request for an Opinion Young, J. M. and Pennycook, S. R. and Watson, D. R. W.,, 56, 491-493 (2006), doi = https://doi.org/10.1099/ijs.0.64030-0, publicationName = Microbiology Society, issn = 1466-5026, abstract= It is proposed that Agrobacterium radiobacter has priority as the earlier heterotypic (subjective) synonym when it is united with Agrobacterium tumefaciens. The nomenclatural status of A. tumefaciens as a later heterotypic synonym of the united species is not lost and it remains the type species of the genus. Request for an Opinion., language=, type=