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areearthshaveabeneficialeffectsonpromotingthecropgrowthandincreasingitsyield .Someresearchershavedemonstratedthattherareearthscannotentertheprotoplastandonlystayoutsidetheplasmamembrane[1] .Thereisanoxidation reduction (redox)systemontheplasmamembraneofpl… 相似文献
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The effect of NO on lanthanum-induced antioxidant activities in rice was evaluated. The results showed that the uptake and translocation of La from root to shoot were obviously inhibited by 10μmol·L^-1 sodium nitropmsside (SNP), a donor of NO, in the seedlings grown in Mura B nutrient solution with 100μmol·L^-1 La. Although the content of ascorbate acid (AsA) were scarcely affected by La or NO in our experiment, La decreased significantly the activity of SOD and content of GSH, while promoted H202 content in leaves. Furthermore, NO blocked these La effects. Taken together, the results suggested that NO relieved La toxicity in rice. A possible role for NO effects on antioxidant activity was discussed. 相似文献
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云南某铜钼选厂尾矿含磁铁矿3.89%~4.70%,石英27.09%,钠长石6.98%,钾长石33.97%,斜长石12.75%,根据该尾矿性质、试验报告及现场地形条件,设计提出了矿资源综合利用方案,增设1条铁精矿回收系统及1条长石、石英综合回收系统。改扩建完成后,可为企业每年新增磁铁精矿0.66万t,粗砂35.00万t,长石24.03万t,石英砂12.88万t,尾矿排放量减少73.67%。经济成效显著,且有效缓解了尾矿库压力,延长其服务年限。 相似文献