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| Effects of lime on the growth and antioxidant enzyme system of Camellia oleifera in manganese-contaminated soil |
| Received:January 09, 2019 |
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| KeyWord:Camellia oleifera;manganese;lime;antioxidant enzyme |
| Author Name | Affiliation | E-mail | | YU Fang-ming | Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin 541004, China
College of Environment and Resource, Guangxi Normal University, Guilin 541004, China
Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, Guilin 541004, China | | | QI Pei-yi | College of Environment and Resource, Guangxi Normal University, Guilin 541004, China | | | LIU Ke-hui | Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin 541004, China
Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, Guilin 541004, China
College of Life Science, Guangxi Normal University, Guilin 541004, China | | | ZHOU Zhen-ming | Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin 541004, China
College of Environment and Resource, Guangxi Normal University, Guilin 541004, China
Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, Guilin 541004, China | | | CHEN Chao-shu | Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin 541004, China
College of Environment and Resource, Guangxi Normal University, Guilin 541004, China
Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, Guilin 541004, China | | | TANG Shu-ting | College of Environment and Resource, Guangxi Normal University, Guilin 541004, China | | | LI Yi | Key Laboratory of Ecology of Rare and Endangered Species and Environmental Protection, Ministry of Education, Guilin 541004, China
College of Environment and Resource, Guangxi Normal University, Guilin 541004, China
Key Laboratory of Karst Ecology and Environment Change of Guangxi Department of Education, Guangxi Normal University, Guilin 541004, China | liyi412@mailbox.gxnu.edu.cn |
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| Abstract: |
| The effects of lime addition on the growth and antioxidant enzyme system of Camellia oleifera were investigated in greenhouses by adding different ratios of lime[0 (Control), 0.05% (S1), and 0.10% (S2)] to manganese-contaminated soils. The results indicated that lime addition significantly increased the soil pH and decreased the exchangeable manganese content. In both soil conditions, S1 treatment reduced the Mn concentration in roots and leaves, which were 46.84% and 19.50%, and 35.90% and 31.24%, respectively, lower than the control group. Meanwhile, S1 treatment significantly reduced the phytoextraction coefficient and bioaccumulation coefficient of C. oleifera in the recovery area soil condition, which decreased to 24.53% and 6.30%, compared with the control group. However, lime addition increased the content of chlorophyll a and chlorophyll b in the leaves of C. oleifera in mining area soil conditions and the content of chlorophyll b in the leaves of C. oleifera in recovery area soil conditions. Moreover, lime addition increased the height of C. oleifera in the mining area soil conditions and the weight of C. oleifera in recovery area soil conditions. In mining area soil conditions, S1 treatment can increase the contents of SOD and POD as well the contents of -SH and PCs. When the S1 and S2 treatments were processed, the contents of SOD were 1.23 times and 1.47 times higher than those in the control group; the contents of POD were 1.47 times and 1.75 times higher than the control group. When the S2 treatments were processed, the contents of -SH and PCs were 1.34 times and 1.45 times higher than those in the control. Thus, the results indicated that lime addition altered the antioxidant enzyme activity system in C. oleifera. |
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