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Updated: May 15, 2026

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Mild Strain Cross-Protection in Passion Fruit.

Linxi Wang1, Hongguang Cui1, Zhaoji Dai2

  • 1Key Laboratory of Green Prevention and Control of Tropical Plant Diseases and Pests (Ministry of Education), School of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan, China.

Methods in Molecular Biology (Clifton, N.J.)
|May 13, 2026
PubMed
Summary
This summary is machine-generated.

Mild viral strains can protect plants from severe infections, a method called cross-protection. Researchers developed a protocol to screen mild Telosma mosaic virus (TelMV) strains for protecting passion fruit crops.

Keywords:
Cross protectionMild strainPassion fruitPotyvirusTelMV

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Area of Science:

  • Plant pathology
  • Virology
  • Agricultural science

Background:

  • Cross-protection is a natural phenomenon where mild viral infections shield plants from severe ones.
  • This strategy has been used for plant disease management since the 1920s.
  • Telosma mosaic virus (TelMV) is an emerging Potyvirus threatening passion fruit production.

Purpose of the Study:

  • To develop a protocol for screening mild TelMV strains.
  • To evaluate the application of mild TelMV strains in protecting passion fruit against severe infections.

Main Methods:

  • Screening of mild Telosma mosaic virus (TelMV) strains.
  • Application of selected mild strains for cross-protection in passion fruit.

Main Results:

  • A protocol for screening mild TelMV strains was successfully established.
  • Mild TelMV strains demonstrated efficacy in protecting passion fruit against severe TelMV infections.

Conclusions:

  • The developed protocol offers an efficient strategy for managing TelMV in passion fruit.
  • This framework can be adapted for cross-protection against other plant viruses.