Etude cinétique, en microscopie électronique, des interactions entre Colletotrichum lagenarium et les cellules foliaires de Cucumis melo

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Abstract
The ultrastructure of apparently healthy mesophyllic cells of muskmelon seedlings is briefly described.Electron micrographs of invaded cells 72 h after inoculation show the intracellular localization of the pathogen and the alteration of the host cell wall in contact with the hyphal apex, the capsulation of hyphae by the host-cell plasmalemma, and the swelling of chloroplasts, nuclei, and mitochondria.When symptoms appear, about 96 h after inoculation, electron micrographs show advanced host cell degeneration, and the fine structure of invading hyphae, including septa formation.

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