An assessment of the potential of herbivorous insect gut bacteria to develop competence for natural transformationJessica L. Ray, Helga K. Andersen, Sandra Young, Kaare M. Nielsen and Maureen O'CallaghanEnviron. Biosafety Res., 6 1-2 (2007) 135-147DOI: https://doi.org/10.1051/ebr:2007032