2.1. MicroorganismThe strain of B. subtilis ICA56 was previously isolated from aBrazilian mangrove soil (Ceará State, Brazil) and was kindly donated by the “Laboratório de Ecologia Microbiana e Biotecnologia” of the Federal University of Ceará. The 16S rRNA gene sequence of the ICA56 can be accessed in the GenBank (KM235112). The strain was maintained on APGE medium slant (consisting of 15.0 g L−1agar,5.0 g L−1peptone, 5.0 g L−1glucose, and 2.5 g L−1yeast extract) at4◦C.