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Review
. 2022 Aug 26;14(9):1884.
doi: 10.3390/v14091884.

Viruses of Yams (Dioscorea spp.): Current Gaps in Knowledge and Future Research Directions to Improve Disease Management

Mame Boucar Diouf  1   2   3 , Ruth Festus  4 , Gonçalo Silva  4 , Sébastien Guyader  1 , Marie Umber  1 , Susan Seal  4 , Pierre Yves Teycheney  5   6
Affiliations
Review

Viruses of Yams (Dioscorea spp.): Current Gaps in Knowledge and Future Research Directions to Improve Disease Management

Mame Boucar Diouf et al. Viruses. .

Abstract

Viruses are a major constraint for yam production worldwide. They hamper the conservation, movement, and exchange of yam germplasm and are a threat to food security in tropical and subtropical areas of Africa and the Pacific where yam is a staple food and a source of income. However, the biology and impact of yam viruses remains largely unknown. This review summarizes current knowledge on yam viruses and emphasizes gaps that exist in the knowledge of the biology of these viruses, their diagnosis, and their impact on production. It provides essential information to inform the implementation of more effective virus control strategies.

Keywords: Yam; control; diagnostic; diversity; epidemiology; impact; virus.

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Conflict of interest statement

The authors declare no conflict of interest.

Figures

Figure 1
Figure 1
Examples of some viral symptoms observed on yam leaves. (A) Mosaic and leaf deformation on D. alata ‘sweet yam’; (B) Chlorosis on D. alata ‘Roujol’; (C) Mosaic on D. rotundata ‘Pouna’; (D) Mottling and leaf distortion on D. rotundata ‘TDr 07/00033′; (E) Puckering on D. rotundata ‘TDr 07/00033′; (F) Mosaic on D. trifida ‘Amoumbé 1′; (G) Severe leaf deformation on D. trifida ‘Praïnia’. Photographs courtesy of INRAE (A,B,F,G) and NRI (C–E).
See this image and copyright information in PMC

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