alexa Visual Detection of Curly Top Virus by the Colorimetric Loop-Mediated Isothermal Amplification
ISSN: 2157-7471

Journal of Plant Pathology & Microbiology
Open Access

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Research Article

Visual Detection of Curly Top Virus by the Colorimetric Loop-Mediated Isothermal Amplification

Mohammad Amin Almasi1, Mehdi Aghapour-ojaghkandi2* and Saeedeh Aghaei2

1Department of Agriculture and Plant Breeding, Faculty of Agriculture, Zanjan University, Zanjan, Iran

2Young Researchers and Elite Club, North Tehran Branch, Islamic Azad University Tehran, Iran

*Corresponding Author:
Mehdi Aghapour-Ojaghkandi
Young Researchers and Elite Club
North Tehran Branch
Islamic Azad University Tehran, Iran
E-mail: [email protected]

Received date: August 03, 2013; Accepted date: September 11, 2013; Published date: September 17, 2013

Citation: Almasi MA, Aghapour-Ojaghkandi M, Aghaei S (2013) Visual Detection of Curly Top Virus by the Colorimetric Loop-Mediated Isothermal Amplification. J Plant Pathol Microb 4:198. doi:10.4172/2157-7471.1000198

Copyright: © 2013 Almasi MA, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

 

Abstract

Curly Top Virus (CTV) in sugar beet, belonging to the family Geminiviridae, genius Curtovirusis a considerable problem in semiarid areas of the Iran and other semiarid parts of the world. There are several diagnostic methods to detect CTV, But these techniques take a long time for 3 h to tow day, requiring sophisticated tools. The aim of this study, for the first time, was to reduce the time required to detect CTV in sugar beet, using colorimetric loop-mediated isothermal amplification (LAMP) technique requiring only an ordinary water bath or thermoblock.DNA was extracted from infected naturally leaf tissues. Samples were tested for the presence of Curtovirus species by PCR and LAMP reactions to amplify replication-associated protein (rep) gene using species primers. LAMP was optimized to amplify CTV DNA under isothermal conditions by incubation at 63°C for 30 min. LAMP products were detected visually using the different dyes. The LAMP amplification products had a ladder-like appearance when electrophorised on an agarose gel and also positive results using the different dyes were a color change. Results confirmed LAMP with different dyes provides a rapid and safe assay for detection of CTV in sugar beet. Since with other molecular methods, equipping laboratories with a thermocycler or expensive detector systems is unavoidable, this assay was found to be a simple, cost-effective molecular method that has the potential to replace other diagnostics in primary laboratories without the need for expensive equipment or specialized techniques. It can also be considered as a reliable alternative viral detection system in further investigations.

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