کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2010135 1066714 2007 9 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Antifungal activity of oligochitosan against Phytophthora capsici and other plant pathogenic fungi in vitro
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک علوم زراعت و اصلاح نباتات
پیش نمایش صفحه اول مقاله
Antifungal activity of oligochitosan against Phytophthora capsici and other plant pathogenic fungi in vitro
چکیده انگلیسی

Antifungal activity of oligochitosan against nine phytopathogens was investigated in vitro. Oligochitosan was more effective than chitosan in inhibiting mycelial growth of Phytophthora capsici and its inhibition on different stages in life cycle of P. capsici was observed. Rupture of released zoospores induced by oligochitosan was reduced by addition of 100 mM glucose. The effects of oligochitosan on mycelial growth and zoospore release, but not zoospore rupture, were reduced largely when pH value was above 7. The ultrastructural study showed that oligochitosan caused distortion and disruption of most vacuoles, thickening of plasmalemma, and appearance of unique tubular materials. Plasmalemmasomes in hyphal tip cells were not found in the presence of oligochitosan. These results suggest polycationic nature of oligochitosan contributes only partly to its antifungal activity and multiple modes of action of oligochitosan exist including the disruption of endomembrane system.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Pesticide Biochemistry and Physiology - Volume 87, Issue 3, March 2007, Pages 220–228
نویسندگان
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