6
What is true for Papaya Ringspot Virus?
(A) . Seed transmissible
(B) . Profuse mottling and puckering of leaves
(C) . Leaves modified into shoe-string like structures
(D) . Transmission by eriophyid mites
Choose the correct answer from the options given below:
EXPLANATION
Viral, Viroid & Phytoplasmal Diseases of Majo
- Papaya Ringspot Virus (PRSV) Symptoms and Transmission:
- is true: Causes intense yellow-green mottling, vein clearing, and severe blister-like puckering on leaves, accompanied by oily water-soaked streaks on petioles and ring spots on fruit.
- is true: In advanced stages of infection, leaf laminae become severely stunted and distorted into filiform shoe-string-like structures, resembling 2,4-D hormone damage.
- is false: PRSV is not transmitted through true botanical seeds of papaya.
- is false: PRSV is a potyvirus transmitted by aphids (Aphis gossypii, Myzus persicae) in a non-persistent manner, NOT by eriophyid mites.
- Conclusion: Statements (B) and (C) only are true (Option 3).
Correct option: (3) (B) and (C) only.
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