Lettuce Cultivar Mediates Both Phyllosphere and Rhizosphere Activity of Escherichia coli O157:H7 Quilliam, Richard S. ; Williams, A. Prysor ; Jones, Davey L. Abstract Publication: PLoS ONE Pub Date: March 2012 DOI: 10.1371/journal.pone.0033842 Bibcode: 2012PLoSO...733842Q