Figure 3 | Scientific Reports

Figure 3

From: Phenazine from Pseudomonas aeruginosa UPMP3 induced the host resistance in oil palm (Elaeis guineensis Jacq.)-Ganoderma boninense pathosystem

Figure 3

Histological observation of control and infected (at 4 month post-inoculation) oil palm root tissues. (I) Horizontal sections (A) Infected root tissues showing degraded vascular bundle (black arrow) (× 10 magnification), (A1) disintegrated parenchyma cells (black arrow) ( × 40 magnification). (B) Phenazine treated root tissues showing an intact vascular bundle (black arrow) ( × 10 magnification) and (B1) parenchyma cells (black arrow) ( × 40 magnification). (II) Longitudinal sections. (A) Healthy root tissue ( × 10 magnification), (B) infected root tissue showing Ganoderma colonization evident by formation of bulb like structure ( × 10 magnification) (yellow arrow), (C) phenazine treated root tissue ( × 40 magnification), and (D) Appressorium (yellow arrow) penetrating into cortex region ( × 40 magnification). Scale bars are equivalent to 30 µm.

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