Product Overview
Bacterial spot is an important bacterial disease of peppers. Two different bacteria; Xanthomonas campestris pv. vesicatoria (Xcv) and Xanthomonas vesicatoria (Xv) can incite this seed borne disease. mTMB (modified Tween Medium B) is a semi-selective medium for detection of Xcv and Xv on seeds of pepper and tomato. The colonies of Xcv and Xv on mTMB plates are yellow; slightly mucoid; mounded and round. Xcv utilizes Tween 80 and in 3-7 days a white crystalline halo usually forms around the yellow colony. Contaminated seed lots can be detected by dilution plating of the bacterial extract on CKTM; mKM or MXV. Suspected isolates are then transferred to YDC. Finally; the identity of the suspected isolates can be deter-mined by a pathogenicity test or PCR. For detailed information about DuchefaÂ’s Phytopathological media have a look at our specialized brochure about this topic. Brochure can be found at the “Brochure sectionÂâ€? at the home page of this website.