Carrot red leaf virus

Family   : Luteoviridae
Genus    : Polerovirus
Acronym  : CtRLV

Introduction

Carrot red leaf virus (CtRLV) is a plant pathogenic virus infecting plants belonging to Umbelliferae, Chenopodiaceae and Solanaceae. Carrot motley dwarf virus is one of the strain.

Major Diseases

Reddening and Yellowing Disease/Stunting Disease

Geographical Distribution

Utter Pradesh and throughout India where the plants are cultivated.

Particle Morphology

A virus with RNA-containing isometric particles 25 nm in diameter.

Transmission Method

Transmitted by a vector Cavariella aegopodii (Aphididae) in a persistent manner. Not transmitted by mechanical inoculation and not transmitted by seed.

Detection

RT-nested PCR method is used in detection of virus.

Host Range and Symptomatology

Daucus carota (carrot) Chlorosis or reddening of older leaves, but mostly symptomless.
Anethum graveolens (dill) Chlorosis or reddening of older leaves, but mostly symptomless.
Anthriscus cerefolium (chervil) Severe yellow mosaic, mottling, and reduction in leaf size and number of flowers
Coriandrum sativum (coriander) Severe yellow mosaic, mottling, and reduction in leaf size and number of flowers.
Anthriscus sylvestris (cow parsley) Severe yellow mosaic, mottling, and reduction in leaf size and number of flowers.
Amaranthus caudatus cv.Chlorosis or reddening of older leaves, but mostly symptomless.
Chenopodium amaranticolorSevere yellow mosaic, mottling, and reduction in leaf size and number of flowers.
Nicotiana tabacum L. (bidi tobacco) Chlorosis or reddening of older leaves, but mostly symptomless.

References

1 Carrot red leaf virus. [Distribution map].. 2008, Distribution Maps of Plant Diseases, October (Edition 1), pp Map 1033.
2 Khan, A. A. ; Naqvi, Q. A., Occurrence of a virus disease of pea from Aligarh, Uttar Pradesh.. 2002, Bionotes, 4, 1, pp Dec-13.
3 Prakasam, V. ; Vedamuthu, P. G. B. ; Khader, M. A. ; Jeyarajan, R., Red leaf disease - a new record in coriander.. 1989, South Indian Horticulture, 37, 4, pp 252.