土壤微藻对盐胁迫的响应及其对盐渍化土壤的改良作用

崔丽洋; 谢茜; 毛青; 黄腾飞; 刘太坤; 蒋磊; 李广琛; 裴福文; 钟兆淇

doi:10.3799/dqkx.2022.454

Volume 48 Issue 11

Nov. 2023

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Article Navigation > Earth Science > 2023 > 48(11): 4270-4278

Cui Liyang, Xie Xi, Mao Qing, Huang Tengfei, Liu Taikun, Jiang Lei, Li Guangchen, Pei Fuwen, Zhong Zhaoqi, 2023. Response of Soil Microalgae to Salt Stress and Its Improvement Effect on Salinized Soil. Earth Science, 48(11): 4270-4278. doi: 10.3799/dqkx.2022.454

Citation:

Cui Liyang, Xie Xi, Mao Qing, Huang Tengfei, Liu Taikun, Jiang Lei, Li Guangchen, Pei Fuwen, Zhong Zhaoqi, 2023. Response of Soil Microalgae to Salt Stress and Its Improvement Effect on Salinized Soil. Earth Science, 48(11): 4270-4278. doi: 10.3799/dqkx.2022.454

Citation:

Cui Liyang, Xie Xi, Mao Qing, Huang Tengfei, Liu Taikun, Jiang Lei, Li Guangchen, Pei Fuwen, Zhong Zhaoqi, 2023. Response of Soil Microalgae to Salt Stress and Its Improvement Effect on Salinized Soil. Earth Science, 48(11): 4270-4278. doi: 10.3799/dqkx.2022.454

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Response of Soil Microalgae to Salt Stress and Its Improvement Effect on Salinized Soil

doi: 10.3799/dqkx.2022.454

1.
Urumqi Comprehensive Survey Center on Natural Resources, China Geological Survey, Urumqi 830057, China
2.
School of Chemistry and Chemical Engineering, Shihezi University, Shihezi 832003, China
3.
School of Environmental Studies, China University of Geosciences, Wuhan 430078, China
4.
Linyi Vocational University of Science and Technology, Linyi 276000, China

Received Date: 2022-10-26
Available Online: 2023-11-30
Publish Date: 2023-11-25

Abstract

Abstract

Soil salinization has become a worldwide environmental problem. In order to explore the new biological technology for salinized soil improvement, laboratory simulation experiments were carried out in this study, in which an indigenous microalgae isolated from the biological soil crust of salinized soil in Xinjiang was used to explore the salt tolerance of the algae and its effect on saline-alkali soil. The results show that the microalgae had high salt tolerance to grow in 1 mol/L NaCl solution. The synthesis of algal photosynthetic pigments was inhibited by salt stress with obvious gradient effect. After 18 d incubation, the contents of the soluble salts in 0.5 mol/L, 1.0 mol/L, 1.5 mol/L NaCl treatment groups decreased by 16.99%, 9.23%, and 3.27%, respectively. The soil microalgae were inoculated and cultivated on the surface of high saline-alkali soil. The experimental groups with initial chlorophyll a of 3 μg/cm², 5 μg/cm² and 8 μg/cm² soil, the soil moisture content increased by 29.41%, 38.29% and 39.54%, and extracellular polymers (EPS) increased by 82.84%, 86.04%, and 116.06%, respectively. These results indicate that soil microalgae can reduce soluble salt, control soil salt transport, and maintain soil moisture. This study provides an important theoretical basis for saline soil improvement by soil microalgae.
- soil algae,
- salt stress,
- saline alkali soil,
- soil improvement,
- water content,
- environmental geology

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References(44)

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Response of Soil Microalgae to Salt Stress and Its Improvement Effect on Salinized Soil

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