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Mutation of the speA gene resulted in reduced swimming motility. (A) D. zeae wild type strain EC1, (B) the speA-disrupted mutant ΔspeA, (C) strain ΔspeA(speA) derived by in trans expressing speA in the mutant ΔspeA. (D) Quantitative measurement of swimming motility of strain EC1 and its derivatives. The photographs were taken after incubation for 24 h at 28°C. The data shown are the means ± SE (n = 3). ****P < 0.0001.
