ISSN: 0973-7510

E-ISSN: 2581-690X

V.V. Kavyashri , Anil Pappachan, A.S. Padmaja, N. Nagaraju and K.T. Rangaswamy
Department of Plant Pathology, UAS, GKVK, Bangalore – 560 065, India.
J. Pure Appl. Microbiol., 2016, 10 (3): 2089-2098
© The Author(s). 2016
Received: 10/01/2016 | Accepted: 09/02/2016 | Published: 30/09/2016
Abstract

Gherkin (Cucumis anguria L.) is an important cucurbitaceous vegetable crop grown in southern states of India viz., Andhra Pradesh, Karnataka and Tamil Nadu for slicing and pickling. The crop infected by Cucumber mosaic virus (CMV) is a most destructive disease on gherkin growth and yield. During 2013-14 survey revealed that, disease incidence was ranging from16.00 to 59.65 per cent with highest incidence was recorded in Kolar (51.27%) and least was in Bangalore rural (17.15%). The virus can readily be transmitted by sap and aphids on cultivar green long which showed systemic mosaic with dark and light green or with yellow patches with slight puckering. Crop like Ash gourd, Bottle gourd, Bush squash, Cucumber, Muskmelon, Pumpkin, Ridge gourd, Round melon and Chilli also showed mosaic symptoms, Tomato showed shoestring symptom, Chenopodium and Cowpea showed necrotic local lesions upon inoculation with CMV. Virus reacted strongly to cucumovirus specific antisera through DAS-ELISA. PCR product of CMV infected sample with CP-primers indicated~700bp-DNA and highest nucleotide homology with the strains of CMV subgroup-IB (95-99%) and nucleotide sequence conservation (99%) with AN-strain (subgroup-IB).

Keywords

Cucumber mosaic virus, Gherkin, Coat protein, DAS-ELISA, PCR.

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© The Author(s) 2016. Open Access. This article is distributed under the terms of the Creative Commons Attribution 4.0 International License which permits unrestricted use, sharing, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made.