Potato virus Y and Potato leafroll virus management under climate change in sub-Saharan Africa

Author:

Krüger Kerstin12,van der Waals Jacquie E.32

Affiliation:

1. Department of Zoology and Entomology, University of Pretoria, Pretoria, South Africa

2. Forestry and Agricultural Biotechnology Institute (FABI), University of Pretoria, Pretoria, South Africa

3. Department of Plant and Soil Sciences, University of Pretoria, Pretoria, South Africa

Abstract

Potato has increased in importance as a staple food in sub-Saharan Africa, where its production is faced with a multitude of challenges, including plant disease development and spread under changing climatic conditions. The economically most important plant viruses affecting potatoes globally are Potato virus Y (PVY) and Potato leafroll virus (PLRV). Disease management relies mostly on the use of insecticides, cultural control and seed certification schemes. A major obstacle in many sub-Saharan Africa countries is the availability of disease-free quality seed potatoes. Establishment and implementation of quality control through specialised seed production systems and certification schemes is critical to improve seed potato quality and reduce PVY and PLRV sources. Seed could be further improved by breeding virus-resistant varieties adapted to different environmental conditions combined with management measures tailored for smallholder or commercial farmers to specific agricultural requirements. Innovative technologies – including more sensitive testing, remote sensing, machine learning and predictive models – provide new tools for the management of PVY and PLRV, but require support for adoption and implementation in sub-Saharan Africa.

Publisher

Academy of Science of South Africa

Subject

General Earth and Planetary Sciences,General Agricultural and Biological Sciences,General Biochemistry, Genetics and Molecular Biology

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