Investigation of the infection process of macrophomina phaseolina on the surface of soybean roots using scanning electron microscopy |
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Authors: | Vernon Ammon Thomas D Wyllie Merton F Brown Jr |
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Institution: | (1) Department of Plant Pathology and Weed Science, Mississippi State University, 39762 Mississippi State, Mississippi;(2) Department of Plant Pathology, University of Missouri, 65201 Columbia, Missouri |
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Abstract: | Sclerotial germination, hyphal growth pattern, and appressorial formation of the charcoal rot fungus, Macrophomina phaseolina (Tassi) Goid. on the surface of soybean roots, Glycine max (L.) Merrill was observed using scanning electron microscopy. Sclerotial germination is followed by a hyphal growth pattern which does not appear to be associated with any specific structural feature on the corrugated root surface. Appressoria are produced on the root surface at the tips of both primary hyphae and side branches within three days after inoculation. |
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