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《Journal of Xinjiang Agricultural University》 2013-05
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Influence of Manmade Dust Stress on Antioxygenic Enzyme Activity of Korla Fragrant Pear leaves

HE Fang;Batur Bake;Patiguli Maimaiti;College of Pratacultural and Environmental Sciences,Xinjiang Agricultural University;  
The leaves without dust coverage were used as the reference by artificial dust coverage method,and two-factors orthogonal test was designed under the condition of the dust coverage thicknesses of 2mg/cm2(light stress),9mg/cm2(heavy stress)and coverage time 7d,14d,28dand 42dto analyze the impact of dust on the superoxide dismutase(SOD),peroxidase(POD)and catalase(CAT)activities of Korla fragrant pear leaves.The results showed that:under the condition of dust coverage,the activities of SOD and POD were increased,while that of POD was decreased;with the prolonging of dust covering time,SOD activity was increased under the condition of same coverage thickness,while POD activity showed a downward trend,and CAT activity present a trend of downward then upward;the thicker the dust covered,the higher the SOD activity rose,at the same time,the more greatly POD decreased;CAT activity had no obvious relationships with the dust coverage thickness,which indicates that dust stress had different impacts on the activities of antioxidant enzymes SOD,POD and CAT of Korla fragrant pear leaves.
【Fund】: 国家自然科学基金项目(31060169);; 霍英东青年教师基金项目(121019);; 新疆维吾尔自治区土壤学重点学科资助
【CateGory Index】: S661.2
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