Fig. 9

Relative luminescence emitted by Vibrio harveyi in absence (positive control) and in presence of 10 ppm of E. acoroides leaf extract for 24 h. The relative luminescence has been calculated by normalizing luminescence by the number of adhered cells. Stars indicate statistically significant differences (Tukey’s HSD, p ≤ 0.05) between the means of three independent replicates. (C + = Positive control; EAL = Enhalus acoroides leaf)