Cowpea mosaic virus

Family   : Secoviridae
Genus    : Comovirus
Acronym  : CPMV

Introduction

Cowpea mosaic virus (CPMV) is a plant virus has limited host range. Infected plants contain two kinds of nucleoprotein particle similar in size but differing in RNA content. Particles containing no RNA are also produced by most isolates. The RNA species in different particle types represent separate parts of the viral genome. Cowpea mosaic virus-yellow strain is commonly seen.

Major Diseases

Mosaic Disease

Geographical Distribution

Wide spread in India.

Particle Morphology

The virus is isometric particles measured about 20-24 nm in size.

Transmission Method

Transmitted by a vector Myzus persicae, Paraluperodes quaternus, Nematocerus acerbus; Virus transmitted by mechanical inoculation; transmitted by grafting; transmitted by seed.

Detection

DAC-ELISA is used for detection of virus

Host Range and Symptomatology

Host	Symptoms
Vigna unguiculata (Cowpea)	Symptoms are vein clearing on the young leaves, mosaic with dark and light green areas.
Cajanus cajan	Mosaic, vein yellowing, leaf malformation.
Crotalaria juncea	Mosaic, vein yellowing, leaf malformation.

References

1	Amit Yadav, Effect of seedborne mosaic virus on growth and yield of cowpea [Vigna sinensis (L.) Savi.].. 2010, Plant Archives, 10, 2, pp 555-557.
2	Atheya, S. C., A mosaic disease of urd from Kanpur, India.. 1977, publ. 1978, Indian Journal of Mycology and Plant Pathology, 7, 1, pp 99-100.
3	Diwakar, M. P. ; Mali, V. R., Cowpea mosaic virus disease - a new record for Marathwada.. 1976, publ. 1977, Journal of Maharashtra Agricultural Universities, 1, Additional, pp 274-277.
4	Govindaswamy, C. V. ; Mariappan, V. ; Murugesan, S. S. ; Padmanabhan, C. ; Thangamani, G. ; Janaki, I. P., Studies on a cowpea mosaic virus disease.. 1970, Madras Agricultural Journal, 57, 8, pp 405-414.
5	Haque, S. Q. ; Chenulu, V. V., Influence of aphid-rearing plants and the developmental forms of the aphid on the transmission of cowpea mosaic virus.. 1972, Tropical Agriculture, 49, 2, pp 183-184.
6	Kamala, V. ; Rao, R. D. V. J. P. ; Varaprasad, K. S., Resistance to Blackeye cowpea mosaic virus in cowpea germplasm collections from Andhra Pradesh.. 2007, Indian Journal of Plant Protection, 35, 1, pp 144-145.
7	Mahalakshmi, B. ; Reddy, B. M. R. ; Nagaraju, Characterization of a mosaic virus disease occurring on cowpea, Vigna unguiculata (L.) Walp.. 2008, Mysore Journal of Agricultural Sciences, 42, 2, pp 278-282.
8	Nariani, T. K. ; Viswanath, S. M. ; Chenulu, V. V. ; Moharir, A. V., Purification and serology of cowpea (Vigna sinensis Savi) mosaic virus.. 1980, Current Science, 49, 17, pp 680.
9	Padma, R. ; Shamsher Singh ; Verma, V. S. ; Uprety, D. C., Chemical composition of healthy and diseased seeds collected from mosaic affected cowpea plants.. 1976, Zeitschrift fur Pflanzenkrankheiten und Pflanzenschutz, 83, 07-Aug, pp 459-461.
10	Radhika, N. S. ; Umamaheswaran, K. ; Balakrishnan, S. ; Pant, R. P., Detection of a Potyvirus causing severe mosaic of cowpea in Kerala.. 2006, Indian Journal of Virology, 17, 1, pp 50-51.
11	Ramachandran, P. ; Summanwar, A. S., A new record of cowpea mosaic virus in India.. 1982, Indian Phytopathology, 35, 4, pp 667-670.
12	Rao, G. P. ; Pandey, A. K. ; Shukla, K., Essential oils of some higher plants vis-à-vis some legume viruses.. 1986, Indian Perfumer, 30, 4, pp 483-486.
13	Saini, D. D., Development of early-maturing white seeded cowpea varieties for Rajasthan.. 2003, 4, pp 47-49.
14	Sekar, R. ; Sulochana, C. B., Blackeye cowpea mosaic virus: occurrence in India.. 1983, Indian Journal of Plant Pathology, 1, 1, pp 38-44.
15	Shankar, G. ; Nene, Y. L. ; Srivastava, S. K., A mosaic disease of cowpea (Vigna sinensis Savi).. 1973, Indian Journal of Microbiology, 13, 4, pp 209-211.
16	Sheo Raj ; Patel, P. N., Studies on resistance in crops to bacterial diseases in India. IX. Sources of multiple disease resistance in cowpea.. 1977, Indian Phytopathology, 30, 2, pp 207-212.
17	Singh, B. R. ; Yadav, M. D. ; Dingar, S. M., Studies on a mosaic disease of cowpea from Uttar Pradesh.. 1984, Science and Culture, 50, 6, pp 210-211.
18	Singh, J. P. ; Varma, J. P., Mosaic disease of mung and urd bean in Haryana.. 1977, Proceedings of the National Academy of Sciences, India, B, 47, 1, pp 33-40.