I. Loubens et al., DETECTION OF ACTIVITY RESPONSIBLE FOR INDUCTION OF THE AGROBACTERIUM-TUMEFACIENS VIRULENCE GENES IN BACTERIOLOGICAL AGAR, Applied and environmental microbiology, 63(11), 1997, pp. 4578-4580
Agrobacterium tumefaciens C58 grown on acidic medium containing glucos
e and solidified with bacteriological agar expressed a virB::lacZ fusi
on. No expression of this fusion was observed on a similar medium,whic
h was solidified with purified agarose. The fraction from bacteriologi
cal agar which was responsible for vir gene induction was extracted wi
th methanol and partially purified by preparative thin-layer chromatog
raphy.