Effects of Triazole Fungicide on Ultrastructural Changes of Botryosphaeria dothidea

doi:10.11924/j.issn.1000-6850.casb16060070

Abstract

Abstract: To study the influence of triazole fungicide on the morphology and structure of Botryosphaeria dothidea. Tebuconazole and difenoconazole, which were commonly used in production, were selected to treat Botryosphaeria dothidea. By optic and electron microscopy technology, the effects of new triazole fungicide on the histology and ultrastructure of Botryosphaeria dothidea were studied. The results showed that tebuconazole and difenoconazole could cause a series of changes of Botryosphaeria dothidea significantly, for example, inhibiting growth of hyphae, hyphae no longer had prostrate growth, but had epitrophy growth. And the hyphae were wizened, abnormal, the branches increased, some long and some short, irregular and unevenly swollen. Some of hyphae showed cracking phenomenon with different degrees. All these structural changes hindered the growth of hyphae of Botryosphaeria dothidea severely, and then hyphal cells broke up and died.

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