Bacillus subtilis as an alternative biologically based strategy for controlling Fusarium wilt disease in tomato: A histological study

The employment of formulated Bacillus subtilis as a biocontrol agent successfully controlled Fusarium oxysporum f.sp. lycopersici within tomato seedlings (in vivo). B. subtilis was able to protect cortex and vascular tissues of tomato against progression of the wilt pathogen. No changes were observed in tomato tissues due to application of B. subtilis except for hypertrophy and elongation of cortex tissues, which indicates the production of plant growth hormones by B. subtilis.