Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations
The use of biogas slurry as an alternative to chemical fertilizers for supplying phosphorus to plants is gaining increasing attention. However, the mechanisms by which biogas slurry activates soil phosphorus and influences phosphorus-metabolizing microorganisms are not yet fully understood. This stu...
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2025-03-01
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| author | Quanxun Chen Jianbo Cheng Guangliang Tian Tengbin He Hu Wang Tao Zhang Jianming Hong Liangyu Dai Tianling Fu |
| author_facet | Quanxun Chen Jianbo Cheng Guangliang Tian Tengbin He Hu Wang Tao Zhang Jianming Hong Liangyu Dai Tianling Fu |
| author_sort | Quanxun Chen |
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| description | The use of biogas slurry as an alternative to chemical fertilizers for supplying phosphorus to plants is gaining increasing attention. However, the mechanisms by which biogas slurry activates soil phosphorus and influences phosphorus-metabolizing microorganisms are not yet fully understood. This study characterized the effects of controlled biogas slurry application gradients (0, 13, 27, 40, and 53) on the soil phosphorus structure, camellia oleifera (CO) phosphorus content, microbial phosphorus metabolism functional gene abundance, and phosphorus transformation functions in CO plantation soils. Increasing the dosage of biogas slurry effectively enhanced soil phosphorus levels and significantly increased the proportions of aluminum-bound phosphorus (Al-P) and iron-bound phosphorus (Fe-P). Under simulated conditions, the contents of soil Al-P, Fe-P, and organic phosphorus significantly decreased and transformed into occluded phosphorus (O-P) and calcium-bound phosphorus (Ca-P), while under field conditions, due to spatial heterogeneity, the changes in soil phosphorus and its forms were not distinctly evident. The application of biogas slurry did not significantly alter the major phyla of phosphorus-metabolizing microorganisms in the soil, but significant changes in the abundance of different microorganisms were observed. The abundance of dominant bacterial communities such as <i>Chloroflexi_bacterium</i> increased, while the abundance of communities such as <i>Actinomycetia_bacterium</i> decreased. By influencing the expression of soil microbial functional genes related to inorganic phosphorus solubilization, organic phosphorus mineralization, phosphorus deficiency response regulation, and phosphorus transport, the solubility of inorganic phosphorus and the mineralization rate of organic phosphorus in the soil were enhanced. Additionally, it may weaken microbial phosphorus uptake by inhibiting intercellular phosphorus transport in microorganisms, thereby improving the utilization of soil phosphorus by CO. |
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| language | English |
| publishDate | 2025-03-01 |
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| spelling | doaj-art-3d8ea1061e4f45ac90c811cf1f93c3ba2025-08-20T02:28:23ZengMDPI AGLand2073-445X2025-03-0114471810.3390/land14040718Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> PlantationsQuanxun Chen0Jianbo Cheng1Guangliang Tian2Tengbin He3Hu Wang4Tao Zhang5Jianming Hong6Liangyu Dai7Tianling Fu8College of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaInstitute of Rural Revitalization, Guizhou University, Guiyang 550025, ChinaInstitute of Rural Revitalization, Guizhou University, Guiyang 550025, ChinaInstitute of Rural Revitalization, Guizhou University, Guiyang 550025, ChinaGuizhou ChuYang Ecological and Environmental Protection Technology Co., Ltd., Guiyang 550025, ChinaInstitute of Rural Revitalization, Guizhou University, Guiyang 550025, ChinaAgriculture and Rural Bureau of Yuping, Tongren 554300, ChinaGuizhou Agricultural Resources and Ecological Environment Protection Station, Guiyang 550025, ChinaCollege of Resource and Environmental Engineering, Guizhou University, Guiyang 550025, ChinaThe use of biogas slurry as an alternative to chemical fertilizers for supplying phosphorus to plants is gaining increasing attention. However, the mechanisms by which biogas slurry activates soil phosphorus and influences phosphorus-metabolizing microorganisms are not yet fully understood. This study characterized the effects of controlled biogas slurry application gradients (0, 13, 27, 40, and 53) on the soil phosphorus structure, camellia oleifera (CO) phosphorus content, microbial phosphorus metabolism functional gene abundance, and phosphorus transformation functions in CO plantation soils. Increasing the dosage of biogas slurry effectively enhanced soil phosphorus levels and significantly increased the proportions of aluminum-bound phosphorus (Al-P) and iron-bound phosphorus (Fe-P). Under simulated conditions, the contents of soil Al-P, Fe-P, and organic phosphorus significantly decreased and transformed into occluded phosphorus (O-P) and calcium-bound phosphorus (Ca-P), while under field conditions, due to spatial heterogeneity, the changes in soil phosphorus and its forms were not distinctly evident. The application of biogas slurry did not significantly alter the major phyla of phosphorus-metabolizing microorganisms in the soil, but significant changes in the abundance of different microorganisms were observed. The abundance of dominant bacterial communities such as <i>Chloroflexi_bacterium</i> increased, while the abundance of communities such as <i>Actinomycetia_bacterium</i> decreased. By influencing the expression of soil microbial functional genes related to inorganic phosphorus solubilization, organic phosphorus mineralization, phosphorus deficiency response regulation, and phosphorus transport, the solubility of inorganic phosphorus and the mineralization rate of organic phosphorus in the soil were enhanced. Additionally, it may weaken microbial phosphorus uptake by inhibiting intercellular phosphorus transport in microorganisms, thereby improving the utilization of soil phosphorus by CO.https://www.mdpi.com/2073-445X/14/4/718biogas slurryphosphorus cyclecamellia oleiferamicrobiotagenes |
| spellingShingle | Quanxun Chen Jianbo Cheng Guangliang Tian Tengbin He Hu Wang Tao Zhang Jianming Hong Liangyu Dai Tianling Fu Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations Land biogas slurry phosphorus cycle camellia oleifera microbiota genes |
| title | Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations |
| title_full | Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations |
| title_fullStr | Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations |
| title_full_unstemmed | Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations |
| title_short | Effects of Biogas Slurry on Microbial Phosphorus Metabolism in Soil of <i>Camellia oleifera</i> Plantations |
| title_sort | effects of biogas slurry on microbial phosphorus metabolism in soil of i camellia oleifera i plantations |
| topic | biogas slurry phosphorus cycle camellia oleifera microbiota genes |
| url | https://www.mdpi.com/2073-445X/14/4/718 |
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