FIGURE 1.

The Δtlp2 mutant was significantly defective in chemotaxis toward aspartate, pyruvate, inorganic phosphate and ferrous sulfate. Chemotaxis was determined using the capillary method (Chandrashekhar et al., 2015) where an RCR-value of 2 or above indicates chemotaxis toward the test chemical. This graph represents only those compounds (out of 15 compounds) for which a defect in chemotaxis was observed in the Δtlp2 mutant. The complete results for chemotaxis toward all 15 compounds tested are listed in Table 3. ^∗P ≤ 0.05. The results show the means and standard errors of three independent experiments.