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International Journal of Plant Pathology
  Year: 2021 | Volume: 12 | Issue: 1 | Page No.: 12-20
DOI: 10.3923/ijpp.2021.12.20
 
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Molecular Characterization of Cassava Mosaic Viruses and Current Mosaic Disease Concern in Three Major Cassava Production Areas in Côte D’ivoire

F. Yao, M. Koffi , I. Abe, M. N`Djetchi, T. Konan and T.A. Sanogo

Abstract:
Background and Objective: Since its introduction in Côte d'Ivoire in the 1980s, Cassava Mosaic Disease has so far continued to cause damage to cassava production in the country. This study aimed to characterize cassava mosaic disease’s pathogens and emphasize current concerns in three major cassava-producing regions for better disease control. Materials and Methods: Two hundred cassava leaf samples comprising symptomatic infection and healthy characteristics from improved and traditional varieties were collected in the departments of Bouaké, Yamoussoukro and Daloa from 2019-2020 in rainy and dry seasons. These leaves were subjected to molecular analyses. Cassava Mosaic Disease’s prevalence and severity were evaluated. All data were analyzed with software R, version 3.3.1. Results: Cassava Mosaic Disease overall phenotypic prevalence was 43.37% and almost equally distributed in all investigated departments. After the molecular diagnostic, the infection rate reached 77.7% for symptomatic plants and 34.28% for asymptomatic plants. The severity scores in traditional and improved varieties were S2, S3 and S4 but S2 were the most frequent. ACMV strains were the most detected while EACMV and co-infections showed the highest injury. Conclusion: The Cassava Mosaic Viruses largely present in all surveyed regions. Traditional varieties seem to be more resistant to infections and therefore require particular attention for viruses’ control.
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How to cite this article:

F. Yao, M. Koffi, I. Abe, M. N`Djetchi, T. Konan and T.A. Sanogo, 2021. Molecular Characterization of Cassava Mosaic Viruses and Current Mosaic Disease Concern in Three Major Cassava Production Areas in Côte D’ivoire. International Journal of Plant Pathology, 12: 12-20.

DOI: 10.3923/ijpp.2021.12.20

URL: https://scialert.net/abstract/?doi=ijpp.2021.12.20

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