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Polymyxa graminis on New Sorghum Species in Africa. J. C. Thouvenel, Virologist, Laboratoire de Virologie, Office de la Recherche Scientifique et Technique Outre-Mer, B.P. V 51, Abidjan, République de Côte d’Ivoire. C. Fauquet, Virologist, Laboratoire de Virologie, Office de la Recherche Scientifique et Technique Outre-Mer, B.P. V 51, Abidjan, République de Côte d’Ivoire. Plant Dis. 64:957-958. Copyright 1980 American Phytopathological Society. DOI: 10.1094/PD-64-957.

Polymyxa graminis (Plasmodiophoraceae), a fungus parasitic on the roots of a few species of Gramineae, was found in the roots of great millet (Sorghum arundinaceum) in Upper Volta. This is the first report of this fungus in Africa. In inoculated pot tests, six Sorghum spp. became infected with P. graminis in addition to the previously established hosts, wheat (Triticum aestivum), barley (Hordeum vulgare), and oats (Avena sativa).