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Fig. 16. Fluorescence illumination of the longitudinal margin of a 56-day-old quiescent canker on peach caused by Leucostoma cincta. The section has been treated with phloroglucinol+HCl and shows a complete intact necrophylactic periderm (NP) contiguous with the original exophylactic periderm (EP). Note aggregation of fungus mycelium (arrow) exhibiting weak autofluorescence. Bar = 10 microns. |
