EVERYDAY SCIENCE

SCIENCE

VIRUS AND BACTERIA

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The leaf blight of paddy is caused by.
A
Bacteria
B
Virus
C
Nematodes
D
Fungus
Explanation: 

Detailed explanation-1: -Bacterial leaf blight of rice (BB) is a disease caused by the Gram-negative bacterium Xanthomonas oryzae pv.

Detailed explanation-2: -rice bacterial blight, also called bacterial blight of rice, deadly bacterial disease that is among the most destructive afflictions of cultivated rice (Oryza sativa and O. glaberrima). In severe epidemics, crop loss may be as high as 75 percent, and millions of hectares of rice are infected annually.

Detailed explanation-3: -Most blights are caused by bacterial or fungal infestations, which usually attack the shoots and other young, rapidly growing tissues of a plant.

Detailed explanation-4: -Bacterial Blight of Rice Symptoms Primarily the plant is light green to greyish green and water-soaked streaks appear on the leaves but once it gets affected by the bacterial blight, they form larger yellowish lesions with uneven edges. Further, the leaves become yellow, gradually wilt and die.

Detailed explanation-5: -Bacterial blight is a disease of barley caused by the bacterial pathogen Xanthomonas campestris pv. translucens (syn. X. translucens). It has been known as a disease since the late 19th century.

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