Pectinolytic and Cellulolytic Enzymes Enhance Fusarium compactum Virulence on Tubercles Infection of Egyptian Broomrape

Figure 4

Strong increase in virulence stimulated by cellulase with some amount of pectinase when the fungus is at suboptimal levels. Roots of tomato plants infested with broomrape were sprayed with ◊ 1.05 × 10⁵ propagules ml⁻¹, plus ∘ 9 U pectinase and 9 U cellulase, ∆ 7 U pectinase and 14 U cellulase or ⊞ 4 U pectinase and 18 U cellulase per ml of homogenized mycelial suspension. The controls □, which all gave the same response were water alone, and pectinase plus cellulase (4 U : 18 U ml⁻¹) aqueous solution alone.