Tropical Plant Pathology (2012) 37, 286-290

Aurivan Soares de Freitas, Márcia Aparecida Cezar, Márcia Michelle de Queiróz Ambrósio, Ana Kelly Firmino da Silva, Maria do Livramento Aragão and José Albérsio de Araújo Lima (2012)
Ocorrência de vírus em cultivos de feijoeiro-caupi no Sertão da Paraíba
[Occurrence of viruses in cowpea in the State of Paraíba, Brazil]
Tropical Plant Pathology 37 (4), 286-290
Abstract: Visiting inspections were made in cowpea (Vigna unguiculata) fields in the counties Bom Sucesso, Paulista and Pombal, in the State of Paraíba, Brazil, during the period of August to December 2009 and February to May 2010 in order to verify the occurrence of virus. Leaf samples with typical symptoms of mosaic and leaf distortion were collected and tested by indirect "Enzyme linked immunosorbent assay" (ELISA) against antisera specific to Cowpea aphid-borne mosaic virus (CABMV) and Cucumber mosaic virus (CMV), and by double immune diffusion test to Cowpea severe mosaic virus (CPSMV) antiserum. Five samples collected in Pombal county during the rainy season showing golden mosaic were tested by Polymerase Chain Reaction (PCR) with primers to virus from the genus Begomovirus. The occurrence of CPSMV and CABMV was observed in the three counties in the two growing seasons in single and mixed infections. The presence of a virus from the genus Begomovirus was confirmed in leaf samples with golden mosaic, but further studies will be required to identify the species involved. The presence of CMV was not detected in any of the counties.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
(original language: Portuguese)
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Research topic(s) for pests/diseases/weeds:
surveys/sampling/distribution

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Pest and/or beneficial records:

Beneficial	Pest/Disease/Weed	Crop/Product	Country	Quarant.
	Cowpea aphid-borne mosaic virus	Cowpea and relatives (Vigna)	Brazil (NE)
	Comovirus severum	Cowpea and relatives (Vigna)	Brazil (NE)