GROWTH AND PHYSIOLOGICAL INDEXES OF WHEAT SEEDLINGS UNER CADMIUM STRESS ALLEVIATED BY NANO TITANIUM DIOXIDE

LIU Ya; CHEN Jin-quan; YANG Zi-yue; JIN Shi-bo; FU Dong-tang; SHEN Shi-li

doi:10.13205/j.hjgc.202105026

Volume 39 Issue 5

Jan. 2022

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Abstract

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Article Navigation > ENVIRONMENTAL ENGINEERING > 2021 > 39(5): 184-189,195

LIU Yu-long, ZHANG Zhi-feng, ZHANG Li, ZHANG Zhe, QIN Lu, CHAI Guo-dong, ZHENG Xing, WANG Dong-qi. EFFECT OF INFLUENT CONDITIONS ON PERFORMANCE AND MICROORGANISMS IN THE SIDE-STREAM ACTIVATED SLUDGE HYDROLYSIS PROCESS[J]. ENVIRONMENTAL ENGINEERING , 2022, 40(5): 146-151,158. doi: 10.13205/j.hjgc.202205021

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LIU Ya, CHEN Jin-quan, YANG Zi-yue, JIN Shi-bo, FU Dong-tang, SHEN Shi-li. GROWTH AND PHYSIOLOGICAL INDEXES OF WHEAT SEEDLINGS UNER CADMIUM STRESS ALLEVIATED BY NANO TITANIUM DIOXIDE[J]. ENVIRONMENTAL ENGINEERING , 2021, 39(5): 184-189,195. doi: 10.13205/j.hjgc.202105026

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GROWTH AND PHYSIOLOGICAL INDEXES OF WHEAT SEEDLINGS UNER CADMIUM STRESS ALLEVIATED BY NANO TITANIUM DIOXIDE

doi: 10.13205/j.hjgc.202105026

1. Institute of International Rivers and Eco-security, Yunnan University, Kunming 650091, China;
2. School of Ecology and Environmental Sciences, Yunnan University, Kunming 650091, China;
3. School of Ecology and Environmental Sciences & Yunnan Key Laboratory for Plateau Mountain Ecology and Restoration of Degraded Environments, Yunnan University, Kunming 650091, China

Received Date: 2019-12-04
Available Online: 2022-01-17

Abstract

Abstract

The research mainly studied whether the use of different concentrations of nano-titanium dioxide (TiO₂-NPs) (0, 25, 50, 100 and 200 mg/L) in hydroponic environment could alleviate the physiological toxicity of Cd to wheat seedlings. The oxidative stress on wheat caused by Cd was alleviated by TiO₂-NPs application in the hydroponic environment. The toxicity of Cd to wheat seedlings was alleviated, the biomass, root length and plant height of wheat were significantly increased, and the photosynthesis of wheat was improved. The net photosynthetic rate of wheat seedlings was increased significantly at medium concentrations (50, 100 mg/L) of TiO₂-NPs. For all concentrations of TiO₂-NPs, the POD enzyme activity was significantly lower than the Cd treatment group; the SOD enzyme activity was significantly lower than Cd treatment group at lower concentrations (<200 mg/L). Results showed that the use of TiO₂-NPs effectively alleviated the toxicity of Cd to wheat seedlings and improved the photosynthesis of wheat seedlings by reducing the oxidative stress caused by Cd.
- nano titanium dioxide,
- cadmium,
- wheat seedlings,
- physiological response

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References

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