Symptoms appear on the leaves of young plants as pale-green to grey-green, water-soaked streaks near the leaf tip and margins.
These lesions coalesce and become yellowish-white with wavy edges.
The whole leaf may eventually be affected, becoming whitish or greyish and then dying.
Leaf sheaths and culms of more susceptible cultivars may be attacked.
Systemic infection results in wilting, desiccation of leaves and death, particularly of young transplanted plants.
In older plants, the leaves become yellow and then die.
In its advanced stages, the disease is difficult to distinguish from leaf blight caused by Xanthomonas oryzae pv. oryzicola, but lesion margins are wavy rather than linear as for the former. Damage is often associated with lepidopteran leaf rollers, leaf-folders and hispa beetles, since bacteria readily enter the damaged tissue caused by insect infestation.
Symptoms appear on the leaves of young plants as pale-green to grey-green, water-soaked streaks near the leaf tip and margins.These lesions coalesce and become yellowish-white with wavy edges.The whole leaf may eventually be affected, becoming whitish or greyish and then dying.Leaf sheaths and culms of more susceptible cultivars may be attacked.Systemic infection results in wilting, desiccation of leaves and death, particularly of young transplanted plants.In older plants, the leaves become yellow and then die.In its advanced stages, the disease is difficult to distinguish from leaf blight caused by Xanthomonas oryzae pv. oryzicola, but lesion margins are wavy rather than linear as for the former. Damage is often associated with lepidopteran leaf rollers, leaf-folders and hispa beetles, since bacteria readily enter the damaged tissue caused by insect infestation.
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