Question

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采用室内栽培法，研究了重金属铜对四种蕨类植物体内SOD、POD、CAT三种抗氧化酶活性的影响。研究发现， Cu胁迫下节节草体内三种抗氧化酶活性随Cu浓度增加明显升高。蜈蚣草在中等浓度Cu胁迫下，体内抗氧化酶活性上升趋势明显，而在高浓度Cu胁迫下体内抗氧化酶的活性迅速下降。金星蕨的SOD和POD活性在中等浓度Cu胁迫下升高，而在高浓度下下降，CAT活性总体随Cu浓度升高而上升。井兰边草体内抗氧化酶活性总体随Cu浓度升高而下降。说明在Cu胁迫下，四种蕨可通过提高体内SOD、POD、CAT三种酶的活性来清除由于Cu污染造成的过多的活性氧自由基，表现出一定强度的耐性，但不同的种对Cu胁迫表现出的耐性不同，节节草耐性最强，蜈蚣草次之，金星蕨和井兰边草耐性相对较弱。

Answer 1

Uses in the room to cultivate the law, has studied the heavy metalcopper to four kind of ferns in vivo SOD, POD, the CAT three kind ofantioxidases active influence. The research discovered under that, Cuforces JIEjiecao in vivo three kind of antioxidases activeness toincrease along with the Cu density obviously elevates. Under wugongcai forces in medium density Cu, in vivo antioxidase activeness trend ofescalation is obvious, but forces in the lower part of the body inhighly concentrated Cu the antioxidase active rapid drop. Under Venusfern's SOD and the POD activeness forces in medium density Cuelevates, but falls in the highly concentrated one after next, the CATactive overall elevates along with the Cu density rises. Nearby thewell orchid in the cursive script the antioxidase active overallelevates along with the Cu density drops. Under the explanation forcesin Cu, four kind of ferns passable have enhanced in vivo SOD, POD, CATthree kind of enzymes activeness eliminate because the Cu pollutioncreates the excessively many active oxygen free radical, displays thecertain intensity the patience, but the different kind forces thepatience to Cu which displays differently, jiejiecao patiencestrongest, wugongcao is next, nearby the Venus fern and the wellorchid the grass patience relative is weaker.

Answer 2

Indoor cultivation method, the copper fern plants on four SOD, POD, Three CAT activity of antioxidant enzymes. Study found that Cu stress three antioxidant enzyme activity in vivo grass spiraling increase in the concentration of Cu increased significantly. Centipede grass in the middle of Cu concentrations stress, antioxidant enzyme activities increased significantly. In high concentrations of Cu stress the activity of antioxidant enzymes in rapid decline. Thelypteridaceae SOD and POD in the middle of Cu concentrations increased stress and decreased at high concentrations, CAT activity generally increased with increasing concentration of Cu. Portland L. Wells antioxidant activity of Cu concentrations increased with the overall decline. Note Cu stress, can be accessed through the Four fern SOD, POD, CAT to be removed due to the activity of three enzymes Cu pollution caused by excessive reactive oxygen species. show some patience intensity, but different kinds of stress on Cu show patience, patience kept the strongest grass, Pteris vittata L. times, Thelypteridaceae Well Portland L. patience and relatively weak.