A bioluminescent Xanthomonas campestris pv. campestris used to monitor black rot infections in cabbage seedlings treated with fosetyl-Al
1996
Mochizuki, G.T. | Alvarez, A.M.
Autophotography of a bioluminescent transconjugant of Xanthomonas campestris pv. campestris provided a reliable means to quantify the extent of bacterial invasion into cabbage (Brassica campestris). A single prophylactic treatment of fosetyl-Al at 4,800 mg kg-1 a.i. as a spray and drench reduced the invasiveness of Xanthomonas campestris pv. campestris on inoculated cabbage seedlings. Multiple treatments did not reduce invasiveness further. The effect of fosetyl-AI was immediate (within 1 h) and persisted for at least 21 days. The efficacy of fosetyl-Al treatments was more pronounced at 20 degrees C and decreased as temperature increased; however, the data indicated a separate effect of temperature on disease development and no direct interaction between temperature and fosetyl-Al treatment.
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