Beet curly top virus

Family   : Geminiviridae
Genus    : Curtovirus
Acronym  : BCTV

Introduction

Beet curly top virus (BCTV) is a plant pathogenic virus belonging to the genus Curtovirus. It is known to infect sugarbeet, beetroot,bean,tomato etc. Sugarbeet curly top virus, Sugarbeet curly-leaf virus, Tomato yellows virus, Western yellow blight virus are few strains usually seen.

Major Diseases

Yellowing Disease

Geographical Distribution

Punjab, north-western part of India.

Particle Morphology

Virions are geminate paticle 18-22 nm in diameter.

Transmission Method

Transmitted by a vector Circulifer tenellus, C. opacipennis (Cicadellidae); Transmitted in a persistent manner; not transmitted by mechanical inoculation; transmitted by grafting; not transmitted by seed.

Detection

ELISA method is used for detection of virus.

Host Range and Symptomatology ShowHide

Host	Symptoms
Tomato	Vein-clearing, swelling and malformation in young leaves; rigid, dwarfed, yellowed, twisted and malformed leaves.

References ShowHide

1	Beet curly top virus. [Distribution map].. 2001, Distribution Maps of Plant Diseases, April (Edition 5), pp Map 24.
2	Beet curly top virus. [Distribution map].. 1977, Distribution Maps of Plant Diseases, October (Edition 4), pp Map 24.
3	Horn, N. M.; Reddy, S. V.; Roberts, I. M.; Reddy, D. V. R., Chickpea chlorotic dwarf virus, a new leafhopper-transmitted geminivirus of chickpea in India.. 1993, Annals of Applied Biology, 122, 3, pp 467-479.
4	Kaur, P. ; Bindra, O. S. ; Singh, S., Biology of Circulifer opacipennis (Lethierry), a leaf-hopper vector of sugar-beet curly-top virus.. 1971, Indian Journal of Agricultural Sciences, 41, 1, pp 01-Oct.
5	Singh, R. N., Note on the beet curly-top virus in India.. 1978, Indian Journal of Agricultural Research, 12, 2, pp 93-94.