Inoculation of plum tomato
A spot inoculation method was used since it allows the application of a known amount of cells onto the surfaces, regardless of weight/size. One hundred microliter (100 μl, ca. 10 drops) of the mixed culture suspension was carefully spotted using an appropriate accurate pipette on the surface sites of tomatoes at ambient air temperature (Chen & Zhu, 2011). To assure optimum exposure to UV-C radiation, intended inoculation sites of tomato was marked with indelible ink. The inoculated tomatoes were placed on sterile petri dishes and air-dried at room temperature (22 °C) in a biosafety cabinet (NuareTM, Plymouth, MN, USA) for 3 h to allow the bacterial attachment to the tomato surface. Following inoculation and cell attachment, tomatoes were subjected to UV-C radiation and sanitizer wash as described below.
Inoculation of plum tomatoA spot inoculation method was used since it allows the application of a known amount of cells onto the surfaces, regardless of weight/size. One hundred microliter (100 μl, ca. 10 drops) of the mixed culture suspension was carefully spotted using an appropriate accurate pipette on the surface sites of tomatoes at ambient air temperature (Chen & Zhu, 2011). To assure optimum exposure to UV-C radiation, intended inoculation sites of tomato was marked with indelible ink. The inoculated tomatoes were placed on sterile petri dishes and air-dried at room temperature (22 °C) in a biosafety cabinet (NuareTM, Plymouth, MN, USA) for 3 h to allow the bacterial attachment to the tomato surface. Following inoculation and cell attachment, tomatoes were subjected to UV-C radiation and sanitizer wash as described below.
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