mTMB Medium

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 Duchefa’s Phytopathological media have a look at our specialized brochure about this topic. Brochure can be found at the “Brochure section” at the home page of this website.

Filename Language File size
T5126_GB.pdf English 142 KB
T5126_NL.pdf Nederlands 145 KB
T5126_DE.pdf Deutsch 148 KB
T5126_FR.pdf Français 147 KB
T5126_ES.pdf Español 146 KB
T5126_IT.pdf Italiano 145 KB
Filename Batch number Expiry date Language
T5126_P22105_GB.pdf P22105 08-2025 English
T5126_P20735_GB.pdf P20735 10-2024 English
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  • T5126.1000
  • 1 kg
  • € 146.80
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