First report of Citrus tristeza virus in Angola and São Tomé e Príncipe
Studies have been carried out in Angola and São Tomé e Príncipe to assess the possible presence of Citrus tristeza virus (Closterovirus, CTV – EPPO A2 List). In São Tomé e Príncipe, young twigs were collected from 20 trees in different places and from different citrus varieties. In Angola, samples were collected from 7 old orange trees (Citrus sinensis) of unknown varieties in an orchard at Sumbe, in the province of Kwanza Sul. Two samples from São Tomé e Príncipe and all of the 7 samples from Angola were found infected by CTV (ELISA). These are the first reports of CTV in Angola and São Tomé e Príncipe.
The situation of Citrus tristeza virus in São Tomé e Príncipe can be described as follows: Present, first reported in 2007.
The situation of Citrus tristeza virus in Angola can be described as follows: Present, first reported in 2007 in an orchard at Sumbe (Kwanza Sul province).
Sources
Silva G, Fonseca F, Santos C, Nolasco G (2007) Presence of Citrus tristeza virus in Angola and São Tomé e Príncipe: characterization of isolates based on coat protein gene analysis. Journal of Plant Pathology 89(1), 149-152.