Citrus ringspot virus

Family   : Alphaflexiviridae
Genus    : Mandarivirus
Acronym  : CRSV

Introduction

Citrus ringspot virus (CRSV) is pathogenic plant virus causes the most economically damaging disease to citrus plants. Indian citrus ring spot virus is the common strain seen in India.

Major Diseases

Leaf mottling and Ringspots Disease

Geographical Distribution

Punjab, Haryana, Rajasthan, Uttar Pradesh, Andhra Pradesh Karnataka and Maharashtra.

Particle Morphology

Flexuous filamentous particles of about 650 nm in length and 13 nm in width.

Transmission Method

Except bud transmission no other mode of natural spread of the disease is known; The disease is transmitted by wedge grafting and dodder(Cuscuta reflexa) but not through seed, soil, aphid and nematode species.

Detection

ELISA and ISEM tests.

Host Range and Symptomatology ShowHide

Host	Symptoms
Citrus spp.	Vein clearing on young leaves followed by bright yellow rings on mature leaves.
Chenopodium quinoa	Vein clearing symptoms on young leaves followed by bright yellow rings on mature leaves.
C. amranticolor	Vein clearing symptoms on young leaves followed by bright yellow rings on mature leaves.
Phaseolus vulgaris var. saxa	Vein clearing symptoms on young leaves followed by bright yellow rings on mature leaves.
Vigna unguiculata	Chlorotic flecks, leaf mottling, ringspots orchlorotic patterns on mature leaves..

References ShowHide

1	Indian citrus ringspot virus. [Distribution map].. 2015, Distribution Maps of Plant Diseases, April, pp Map 1166 (Edition 1).
2	Ahlawat, Y. S., Status of virus and virus-like pathogens infecting citrus in India and future strategies for citrus improvement.. 1997, Indian Phytopathology, 50, 2, pp 192-193.
3	Ahlawat, Y. S., Viruses, greening bacterium and viroids associated with citrus (Citrus species) decline in India.. 1997, Indian Journal of Agricultural Sciences, 67, 2, pp 51-57.
4	Ahlawat, Y. S. ; Pant, R. P., Indian citrus ringspot virus.. 2008, 2, pp 97-107.
5	Lokhande, N. M., Occurrence of a new viral ringspot disease of citrus in Vidarbha (Maharashtra).. 1997, Madras Agricultural Journal, 84, 3, pp 165-166.
6	Lore, J. S. ; Cheema, S. S., Distribution of citrus ring spot virus (CRSV) in different agroclimatic zones of Punjab.. 2001, Plant Disease Research, 16, 2, pp 272-273.
7	Lore, J. S. ; Cheema, S. S. ; Thind, S. K., Effect of citrus ring spot disease on yield and fruit quality of Kinnow.. 2001, Journal of Research, Punjab Agricultural University, 38, 01-Feb, pp 23-26.
8	Pant, R. P. ; Ahlawat, Y. S., Partial characterization of a filamentous virus associated with ringspot disease of citrus.. 1998, Indian Phytopathology, 51, 3, pp 225-232.
9	Sanjeev Sharma ; Balwinder Singh ; Gita Rani ; Zaidi, A. A. ; Vipin Hallan ; Avinash Nagpal ; Virk, G. S., Production of Indian citrus ringspot virus free plants of Kinnow employing chemotherapy coupled with shoot tip grafting.. 2007, Journal of Central European Agriculture, 8, 1, pp 01-Aug.
10	Thind, S. K. ; Arora, P. K., Incidence and behaviour of ring spot virus in citrus.. 1997, Indian Journal of Virology, 13, 2, pp 159-160.
11	Thind, S. K. ; Arora, P. K. ; Sharma, J. N. ; Cheema, S. S., Transmission of citrus ring spot virus through budwood, seed and insect-vectors.. 1999, Indian Journal of Virology, 15, 1, pp 47-48.
12	Thind, S. K. ; Sharma, J. N. ; Arora, P. K. ; Cheema, S. S., Effect of citrus ring spot virus on quality of Kinnow mandarin fruits.. 1998, Indian Journal of Virology, 14, 1, pp 91-92.