the use of silicon on systemic resistance induction against fusarium head blight disease of wheat

نویسندگان

وحید قاضی محسنی

دانشجوی کارشناسی ارشد، بیماری شناسی گیاهی، گروه گیاه پزشکی، دانشکدة کشاورزی، دانشگاه زابل سید کاظم صباغ

استادیار، بیوتکنولوژی گیاهی، گروه گیاه پزشکی و پژوهشکدة زیست فناوری گیاهی، دانشگاه زابل صدیقه اسمعیل زاده بهابادی

استادیار، گروه زیست شناسی، دانشکدة علوم پایه، دانشگاه زابل مرتضی قربانی

استادیار، بیماری شناسی گیاهی، گروه گیاه پزشکی، دانشگاه زابل

چکیده

in this study the effect of different concentrations of silicon( 0, 2 , 4 and 6 mm, on expression of some genes involved in resistance and activity of several antioxidan enzymes was investigated: the plants was treated in flowering stage via soil solution. the treated plants were inoculated with 106 spore suspended in 1 ml by injection into the lower part of the spikelets and then were harvested at 0, 24, 72 and 120 h after inoculation for meausering enzymatic activity of gene expression analysis. the results showed that disease severity was reduced in treated plants compared to the control. biochemical analysis showed that activity of peroxidase and polyphenol oxidase enzymes at all concentrations of silicon was increased significantly copared to the control . gene expression analysis showed that expression level of beta-1, 3-glucanase and oxalate oxidase genes induced plants with silicon concentration of 6mmol/l were increased at 120h time point after inoculation. overal, the results of this research indicate that silicon could increase plant resistance against pathogenic fungi by induction of induced systemic resistance.

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عنوان ژورنال:

کنترل بیولوژیک آفات و بیماری های گیاهی

جلد ۳، شماره ۲، صفحات ۱۲۷-۱۳۷

کلمات کلیدی

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