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Viruses 2017, 9(4), 63;

Simultaneous Detection of Both RNA and DNA Viruses Infecting Dry Bean and Occurrence of Mixed Infections by BGYMV, BCMV and BCMNV in the Central-West Region of Mexico

Instituto Tecnológico de Celaya, Departamento de Ingeniería Bioquímica, Celaya, Guanajuato, CP 38010, Mexico
INIFAP-Campo Experimental Bajío, Celaya, Guanajuato, CP 38010, Mexico
INIFAP-Campo Experimental Santiago Ixcuintla, Santiago Ixcuintla, Nayarit, CP 63300, Mexico
INIFAP-Campo Experimental Centro de Chiapas, Ocozocoautla, Chiapas, CP 29140, Mexico
Author to whom correspondence should be addressed.
Academic Editor: Ricardo Flores Pedauye
Received: 7 January 2017 / Revised: 21 March 2017 / Accepted: 22 March 2017 / Published: 30 March 2017
(This article belongs to the Section Viruses of Plants, Fungi and Protozoa)
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A multiplex reverse transcription polymerase chain reaction (RT-PCR) assay was developed to simultaneously detect bean common mosaic virus (BCMV), bean common mosaic necrotic virus (BCMNV), and bean golden yellow mosaic virus (BGYMV) from common bean leaves dried with silica gel using a single total nucleic acid extraction cetyl trimethyl ammonium bromide (CTAB) method. A mixture of five specific primers was used to amplify three distinct fragments corresponding to 272 bp from the AC1 gene of BGYMV as well as 469 bp and 746 bp from the CP gene of BCMV and BCMNV, respectively. The three viruses were detected in a single plant or in a bulk of five plants. The multiplex RT-PCR was successfully applied to detect these three viruses from 187 field samples collected from 23 municipalities from the states of Guanajuato, Nayarit and Jalisco, Mexico. Rates of single infections were 14/187 (7.5%), 41/187 (21.9%), and 35/187 (18.7%), for BGYMV, BCMV, and BCMNV, respectively; 29/187 (15.5%) samples were co-infected with two of these viruses and 10/187 (5.3%) with the three viruses. This multiplex RT-PCR assay is a simple, rapid, sensitive, and cost-effective method for detecting these viruses in the common bean and can be used for routine molecular diagnosis and epidemiological studies. View Full-Text
Keywords: Phaseolus vulgaris; virus detection; multiplex RT-PCR Phaseolus vulgaris; virus detection; multiplex RT-PCR

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Chiquito-Almanza, E.; Acosta-Gallegos, J.A.; García-Álvarez, N.C.; Garrido-Ramírez, E.R.; Montero-Tavera, V.; Guevara-Olvera, L.; Anaya-López, J.L. Simultaneous Detection of Both RNA and DNA Viruses Infecting Dry Bean and Occurrence of Mixed Infections by BGYMV, BCMV and BCMNV in the Central-West Region of Mexico. Viruses 2017, 9, 63.

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