Physiological and biochemical characteristic of Miscanthus×giganteus grown in heavy metal-oil sludge co-contaminated soil  

作　　者：Anna Muratova Yelena Lyubun Irina Sungurtseva Olga Turkovskaya Asil Nurzhanova 

机构地区：[1]Institute of Biochemistry and Physiology of Plants and Microorganisms RAS,Saratov 410015,Russia [2]Institute of Plant Biology and Biotechnology,Almaty 050040,Kazakhstan

出　　处：《Journal of Environmental Sciences》2022年第5期114-125,共12页环境科学学报（英文版）

基　　金：This research was supported by the Ministry of Education and Science of the Republic of Kazakhstan(Project no.AP09259724,work on the effect of Zn);by the Ministry of Science and Higher Education of the Russian Federation(state assignment no.121031700141-7,work on the effect of oil sludge).

摘　　要：The effect of oil sludge and zinc,present in soil both separately and as a mixture on the physiological and biochemical parameters of Miscanthus×giganteus plant was examined in a pot experiment.The opposite effect of pollutants on the accumulation of plant biomass was established:in comparison with uncontaminated control the oil sludge increased,and Zn reduced the root and shoot biomass.Oil sludge had an inhibitory effect on the plant photosynthetic apparatus,which intensified in the presence of Zn.The specific antioxidant response of M.×giganteus to the presence of both pollutants was a marked increase in the activity of superoxide dismutase(mostly owing to oil sludge)and glutathione-S-transferase(mostly owing to zinc)in the shoots.The participation of glutathione-S-transferase in the detoxification of both the organic and the inorganic pollutants was assumed.Zn inhibited the activity of laccase-like oxidase,whereas oil sludge promoted laccase and ascorbate oxi-dase activities.This finding suggests that these enzymes play a part in the oxidative detox-ification of the organic pollutant.With both pollutants used jointly,Zn accumulation in the roots increased 6-fold,leading to increase in the efficiency of soil clean-up from the metal.In turn,Zn did not significantly affect the soil clean-up from oil sludge.This study shows for the first time the effect of co-contamination of soil with oil sludge and Zn on the phys-iological and biochemical characteristics of the bioenergetic plant M.×giganteus.The data obtained are important for understanding the mechanisms of phytoremediation with this plant.

关 键 词：Miscanthus×giganteus Oil sludge ZINC Antioxidant enzymes Oxidative enzymes 

分 类 号：X53[环境科学与工程—环境工程] X173