کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
2836396 1570855 2013 7 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
The effect of Puccinia striiformis f. sp. tritici on the levels of water-soluble carbohydrates and the photosynthetic rate in wheat leaves
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم کشاورزی و بیولوژیک دانش گیاه شناسی
پیش نمایش صفحه اول مقاله
The effect of Puccinia striiformis f. sp. tritici on the levels of water-soluble carbohydrates and the photosynthetic rate in wheat leaves
چکیده انگلیسی


• The sucrose levels of infected wheat leaves were tested.
• The difference in sucrose level of in vivo and excised leaves was compared.
• Photosynthesis is the source of the change in sucrose concentration.
• The expression profiles of some genes support the increased photosynthetic rate.

Stripe rust is the most serious wheat disease worldwide. Puccinia striiformis f. sp. tritici (Pst), which is the causal agent of stripe rust, is an obligate biotrophic fungus and must take up nutrients from the host through its haustoria. Recent studies have indicated that sugar is the main nutrient taken up by pathogens from host cells. However, the response of sugars to Pst infection in wheat is not well known. In this study, the levels of water-soluble carbohydrates in Pst-infected wheat leaves were investigated, and the results revealed slight changes for all of the carbohydrates except sucrose. Furthermore, the sucrose levels increased in both the compatible and incompatible systems. The photosynthetic rates of infected leaves were determined and found to be significantly increased during the early stage of Pst infection. In addition, the expression profiles of genes associated with photosynthesis were assayed through real-time PCR, and the trends found were identical to that observed for the photosynthetic rate in Pst-infected wheat leaves. These findings indicate that Pst infection can upregulate genes involved in photosynthesis to promote the photosynthetic rate and ultimately induce sucrose accumulation in infected wheat leaves.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physiological and Molecular Plant Pathology - Volume 84, October 2013, Pages 131–137
نویسندگان
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