Plant Disease 1988 | Additions to Host Range of Colletotrichum gloeosporioides f. sp. aeschynomene

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Additions to Host Range of Colletotrichum gloeosporioides f. sp. aeschynomene. D. O. TeBeest, Professor, Department of Plant Pathology, 217 Plant Science Building, University of Arkansas, Fayetteville 72701. . Plant Dis. 72:16-18. Accepted for publication 8 September 1987. Copyright 1988 The American Phytopathological Society. DOI: 10.1094/PD-72-0016.

The fungus Colletotrichum gloeosporioides f. sp. aeschynomene is currently used as a myco-herbicide to control northern jointvetch (Aeschynomene virginica), a leguminous weed in Arkansas. Seventy-seven species from 43 genera and 10 families were inoculated in greenhouse host range tests. Crop species within the genera Gossypium, Abelmoschus, Cucumis, Cucurbita, Citrullus, Oryzae, Zea, Triticum, Lycopersicon, Spinacia, Brassica, Raphanus, Helianthus, Lactuca, Daucus, Fragaria, Phaseolus, Glycine, Arachis, and Vigna were immune to C. gloeosporioides. Only Aeschynome virginica was killed by this pathogen. Several species of Aeschynomene, Lathyrus, Lupinus, and Vicia faba and 23 of 26 Pisum sativum cultivars tested were susceptible, and lesions developed on leaflets, petioles, and stems of Lathyrus, Lupinus, Pisum, Vicia faba, and Aeschynomene. The host range is thus larger than originally described.