Growth and storage of Agrobacterium tumefaciens Strain GV3101: resistant to gentamycin and rifampicin so add 25-50 ug/ml Gentamycin, 10 ug/ ml rifampicin on plates or in liquid media for selection. GV3101 is sensitive to kanamycin (or chloramphenicol), so is a good strain for use with binary vectors that confer kan resistance (or chloramphenicol resistance) in bacteria (e.g. transformed cells will be Gent, rif and Kan resistant). GV3101 carries a disarmed Ti plasmid that possesses the vir genes needed for T-DNA transfer, but has no functional T-DNA region of its own. Grow at 28-30°C. Store as glycerol stock (800 ml of fresh overnight culture 200 ul sterile 80% glycerol) at