Major biocontrol of plant tumors targets tRNA synthetase John S. Reader # , Phillip T. Ordoukhanian # , Jung-Gun Kim § , Valerie de Crécy-Lagard # , Ingyu Hwang § , Stephen Farrand † and Paul Schimmel # # The Skaggs Institute for Chemical Biology, The Scripps Research Institute, La Jolla, CA 92037, USA. § The School of Agricultural Biotechnology, Seoul National University, Seoul 151-921, Korea. † The Department of Microbiology, The University of Illinois at Urbana-Champaign, Urbana, IL 61801-3838, USA Contents: Materials and Methods References and Notes Fig. S1 Fig.S2A,B,C,D Materials and Methods Strains and growth conditions A. tumefaciens strains used in this study were the following; NT1, a Ti plasmid- cured derivative of the wild-type tumorgenic C58 strain (S1), NTL4 (pTiC58)∆accR, an