Structural and Biochemical Changes in Salicylic-Acid-Treated Date Palm Roots Challenged with Fusarium oxysporum f. sp. albedinis

Figure 3

Cytochemical localization of peroxidase activity in date palm root tissues of JHL cultivar revealed by brown deposits after DAB staining. (a) control plants (UU; ×40); (b) infected plants (UI; ×60); (c) SA-treated roots (TU; ×60); (d) SA-treated and Fusarium oxysporum f. sp. albedinis-infected plants (TI; ×60). X: xylem vessels; Ph: phloem; En: endodermic cells; Pc: cortical parenchyma cells; Phc: Phenolic-storing cells.

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