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Pea Seed-borne Mosaic Virus (PSbMV)
Pea leaf-rolling virus,

Virus, POTYVIRIDAE, POTYVIRUS .

Crops attacked: peas, .


[R]Common Names :

Rolling,

PSbMV is very probably distributed world-wide because of the international exchange of seeds.

Identification, Description, Biology, Epidemiology, Treatement, Possible misleading, Images


[R]Identification
Detection in the leaves and the seeds is possible through traditional testing on indicator hosts and through serological tests (ELISA test).

[R]Description
The typical symptom in the pea is the downward rolling of the leaflet.
According to the temperature conditions and the virus strain, symptoms slightly vary in mosaic and/or the degree of leaf rolling up to the total necrosis of the plant.
In optimum temperature conditions the first symptoms consist in slight chlorosis and distorsion.
Then the leaflets narrow and their margins roll downward, the internodes get shorter and stunting may occur.
Abortion occurs in flowers, the pods become distorted, they produce reduced seeds and sometimes present necrotic lines.
Four to five weeks retarded growth and maturation.

[R]Biology
Contamination of the field caused by contaminated seeds.
The spreading of the disease in the field from infected seedlings is carried through very efficiently in a non persisting way by 22 species of which the 3 main ones are : Myzus persicae , Macrosiphum spp. and Acyrthosiphum pisum Harr.

[R]Epidemiology
Temperature limits the expression of symptoms in the field.
The mosaic becomes clear only between 20 C. and 30 C.
The spreading of the virus from the primary fociby early aphid invasion increases the number of secondary infective foci which are the source of secondary epidemics.

[R]Treatement
Use certified seeds.

[R]Possible misleading
.

[R] Images

  1. Pea seed-borne mosaic virus, PSbMV (KHETARPAL R. K., INRA)
    Pea seed-borne mosaic virus of pea Upper stage lance-shapped, rolled leaflets of infected peas by pea seed-borne mosaic virus.
  2. Pea seed-borne mosaic virus, PSbMV (BOSSENNEC J-M., INRA)
    Pea seed-borne mosaic virus of pea Comparison of healthy peas with infected one by pea seed-borne mosaic virus (lance-shaped and rolled leaflets).
  3. Pea seed-borne mosaic virus, PSbMV (GUO J. Q., INRA)
    Pea seed-borne mosaic virus of pea Little necrosis surrounded by a caracteristic red halo of pea seed-borne mosaic on a leaf of the indicator plant.
  4. Pea seed-borne mosaic virus, PSbMV (BOSSENNEC J-M., INRA)
    Pea seed-borne mosaic virus of pea Sinuous necrotic line on seed testa infected by pea seed-borne mosaic virus.
  5. Pea seed-borne mosaic virus, PSbMV (MAURY Y.,INRA)
    Pea seed-borne mosaic virus of pea Sinuous necrotic line on seed testa infected by pea seed-borne mosaic virus.

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HYP3 on line : Species (scientific name), Diseases (common names), Glossary, Crops.

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