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What is Pepino Mosaic Virus (PepMV)?

Pepino Mosaic Virus (PepMV) is one of the most economically significant viral diseases in greenhouse tomato production worldwide. Due to its rapid spread and impact on fruit quality, effective prevention and management are critical for maintaining yield and marketability. PepMV is a highly contagious plant virus that primarily affects tomato crops. It spreads easily through mechanical contact, making greenhouse environments particularly vulnerable. There are several strains of PepMV, with varying levels of aggressiveness, but all can cause significant economic losses if not properly managed.

Biological solutions for Pepino mosaic virus

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  • Easy to use
  • Minimal resistance
  • No chemical residues
  • No pre-harvest intervals

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Key symptoms of Pepino Mosaic Virus (PepMV)

Symptoms can vary depending on the strain, environmental conditions, and tomato variety, but common signs include:

On leaves

  • Mosaic or mottled patterns (light and dark green patches)
  • Leaf distortion or bubbling
  • Yellowing or chlorosis

On fruits

  • Marbling or uneven ripening
  • Yellow or orange discoloration
  • Necrotic streaks or spotting
  • Reduced fruit quality and market value

On plants

  • Reduced vigor in severe cases
  • Irregular growth patterns

Life cycle of Pepino Mosaic Virus (PepMV)

PepMV spreads quickly in tomato crops due to its simple, contact-based life cycle.

Entry
The virus enters plants through small wounds caused by handling, pruning, or harvesting.

Spread within the plant
It multiplies and moves rapidly through the plant, often before symptoms are visible.

Symptom development
Symptoms can appear within 1–3 weeks, but infections may remain mild or unnoticed.

Transmission
PepMV spreads mainly through hands, tools, clothing, and plant contact. Even minimal contact can infect new plants.

Survival
The virus can persist on surfaces, equipment, and plant debris, leading to further spread if hygiene is insufficient.

Protection against PepMV with V10

An effective strategy to protect tomato crops against Pepino Mosaic Virus (PepMV) is the use of cross-protection with a mild strain, such as V10.

What is V10?

V10 is a mild strain of Pepino Mosaic Virus used in a controlled way to protect plants against more aggressive strains such as PepMV EU, PepMV LP, PepMV CH2. It also provides moderate protection against PepMV US1.

This approach is based on the principle of cross-protection, where:

  • A mild virus strain occupies the plant
  • It prevents infection by more severe strains
  • It reduces symptom severity and economic damage
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How V10 Works

After application:

  • V10 infects the plant in a controlled manner
  • The plant activates its natural defense mechanisms
  • More aggressive PepMV strains are blocked or suppressed

Benefits

Using V10 as part of an integrated strategy can provide:

  • Reduced impact of aggressive PepMV strains
  • More consistent fruit quality and appearance
  • Lower economic losses
  • Compatibility with biological crop protection programs
More about V10

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