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Aglaonema leaf blight (caused by Erwinia sp.)

Bacterial leaf blight and hydrosis of Phalaenopsis orchid foliage caused by infection by the plant-pathogenic bacterium, Burkholderia gladioli.

Bacterial leaf blight and hydrosis of Phalaenopsis orchid foliage caused by infection by the plant-pathogenic bacterium, Burkholderia gladioli. Note: the leaf spots with the well-defined margins are not bacterial in etiology.

Definition

Bacterial leaf blight is sudden, severe, and extensive spotting, discoloration, wilting, or destruction of leaves caused by plant-pathogenic bacteria.