کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
4419465 1618936 2016 8 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Biological responses of wheat (Triticum aestivum) plants to the herbicide simetryne in soils
موضوعات مرتبط
علوم زیستی و بیوفناوری علوم محیط زیست شیمی زیست محیطی
پیش نمایش صفحه اول مقاله
Biological responses of wheat (Triticum aestivum) plants to the herbicide simetryne in soils
چکیده انگلیسی


• Simetryne is one of the principal herbicides used in rice–wheat rotation.
• Wheat plants exposed to simetryne stress exhibited suppressed growth.
• Simetryne was progressively accumulated by the wheat plants.
• Simetryne treatment induced oxidative stress in wheat seedlings.
• Antioxidant enzyme response to simetryne stress was studied.

The rotation of rice and wheat is widely used and highly endorsed, and simetryne (s-triazine herbicide) is one of the principal herbicides widely used in this rotation for weed and grass control. However, little is known regarding the mechanism of the ecological and physiological effects of simetryne on wheat crops. In this study, we performed a comprehensive investigation of crop response to simetryne to elucidate the accumulation and phytotoxicity of the herbicide in wheat crops. Wheat plants exposed to 0.8 to 8.0 mg kg−1 simetryne for 7 d exhibited suppressed growth and decreased chlorophyll content. With simetryne concentration in the soil varied from 0.8 mg kg−1 to 8.0 mg kg−1, simetryne was progressively accumulated by the wheat plants. The accumulation of simetryne in the wheat plants not only induced the over production of ROS and injured the membrane lipids but also stimulated the production of antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT), peroxidase (POD), ascorbate peroxidase (APX), glutathione reductase (GR) and glutathione S-transferase (GST). A test of enzymatic activity and gene expression illustrated that the wheat plants were wise enough to motivate the antioxidant enzymes through both molecular and physiological mechanisms to alleviate the simetryne-induced stress. This study offers an illuminating insight into the effective adaptive response of the wheat plants to the simetryne stress.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Ecotoxicology and Environmental Safety - Volume 127, May 2016, Pages 87–94
نویسندگان
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