The International Society for Infectious Diseases' program, ProMED, has reported the detection of Pepper ringspot virus (PepRSV) in both seed and commercial potato varieties across several South African provinces.

This information was relayed to ProMed subscribers on January 9, 2024, based on data from the International Plant Protection Convention. The first detection of PepRSV in a commercial potato crop in South Africa was in October 2022. Since then, the virus has been found in several potato cultivars across the country. The identification of the virus was confirmed by plant virologists using RT-PCR methodology.

The potential spread of PepRSV could negatively impact both domestic and international trade, along with the export potential of affected commodities. The South African Department of Agriculture, Land Reform, and Rural Development (DALRRD) is conducting surveys in production areas to assess the spread and status of the pest. Phytosanitary measures have been implemented to restrict the movement of host material from infected to non-infected areas. PepRSV is now considered present in the country, excluding designated virus-free areas.

PepRSV affects a wide range of solanaceous crops and weeds, including true seed in tomatoes. The virus is transmitted in the soil by nematodes that feed on tubers and roots, complicating disease management. Certification and quarantine indexing of potatoes are crucial for all viral diseases.

Source - https://www.freshplaza.com