Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types
Soil microorganisms are crucial for nutrient cycling, with abundant and rare taxa playing distinct roles. However, the mechanisms by which soil microbes influence nutrient cycling under different crop types remain unclear. In this study, we investigated the network structure, diversity, and microbia...
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2025-02-01
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| author | Qingmiao Yang Hanwen Liu Biao Tang Chunxiao Yu Shide Dong Yang Li Guangxu Cui Yi Zhang Guangmei Wang |
| author_facet | Qingmiao Yang Hanwen Liu Biao Tang Chunxiao Yu Shide Dong Yang Li Guangxu Cui Yi Zhang Guangmei Wang |
| author_sort | Qingmiao Yang |
| collection | DOAJ |
| description | Soil microorganisms are crucial for nutrient cycling, with abundant and rare taxa playing distinct roles. However, the mechanisms by which soil microbes influence nutrient cycling under different crop types remain unclear. In this study, we investigated the network structure, diversity, and microbial composition of croplands in the Yellow River Delta, focusing on four primary crops: soybean, maize, cotton, and sorghum. The findings revealed that the co-occurring network structure of sorghum planting-soils exhibited greater complexity than other crop types. Bacterial alpha diversity in cotton-planting soil is the highest and susceptible to environmental variations. The diversity of both rare and abundant taxa responds differently to soil nutrients depending on the crop type. While abundant taxa play a crucial role in soil multi-nutrient cycling, rare taxa are key drivers of variations in nutrient cycling expression. The diversity of rare taxa showed a strong correlation with critical nutrients. Structural equation modeling revealed that the alpha diversity of rare bacterial and fungal taxa significantly influenced the soil multi-nutrient cycling index (<i>MNC</i>). Specifically, higher Shannon indices of rare bacterial taxa were associated with lower <i>MNC</i>, while the opposite was true for soil fungi. Soil organic carbon and soil total nitrogen are the key factors influencing alpha diversity in rare bacterial and fungal taxa. Moreover, this study provides new insights into the role of rare soil microbial diversity in the nutrient cycling of agricultural ecosystems. |
| format | Article |
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| institution | Kabale University |
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| language | English |
| publishDate | 2025-02-01 |
| publisher | MDPI AG |
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| spelling | doaj-art-69b6782a978744c2bb95787507fd3e4b2025-08-20T03:43:10ZengMDPI AGMicroorganisms2076-26072025-02-0113351310.3390/microorganisms13030513Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop TypesQingmiao Yang0Hanwen Liu1Biao Tang2Chunxiao Yu3Shide Dong4Yang Li5Guangxu Cui6Yi Zhang7Guangmei Wang8School of Life Sciences, Ludong University, Yantai 264025, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCCCC-FHEC Ecological Engineering Co., Ltd., Shenzhen 518106, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaCAS Key Laboratory of Coastal Environmental Processes and Ecological Remediation, Yantai Institute of Coastal Zone Research, Chinese Academy of Sciences, Yantai 264003, ChinaSoil microorganisms are crucial for nutrient cycling, with abundant and rare taxa playing distinct roles. However, the mechanisms by which soil microbes influence nutrient cycling under different crop types remain unclear. In this study, we investigated the network structure, diversity, and microbial composition of croplands in the Yellow River Delta, focusing on four primary crops: soybean, maize, cotton, and sorghum. The findings revealed that the co-occurring network structure of sorghum planting-soils exhibited greater complexity than other crop types. Bacterial alpha diversity in cotton-planting soil is the highest and susceptible to environmental variations. The diversity of both rare and abundant taxa responds differently to soil nutrients depending on the crop type. While abundant taxa play a crucial role in soil multi-nutrient cycling, rare taxa are key drivers of variations in nutrient cycling expression. The diversity of rare taxa showed a strong correlation with critical nutrients. Structural equation modeling revealed that the alpha diversity of rare bacterial and fungal taxa significantly influenced the soil multi-nutrient cycling index (<i>MNC</i>). Specifically, higher Shannon indices of rare bacterial taxa were associated with lower <i>MNC</i>, while the opposite was true for soil fungi. Soil organic carbon and soil total nitrogen are the key factors influencing alpha diversity in rare bacterial and fungal taxa. Moreover, this study provides new insights into the role of rare soil microbial diversity in the nutrient cycling of agricultural ecosystems.https://www.mdpi.com/2076-2607/13/3/513rare microbial taxaabundant microbial taxasoil multi-nutrient cycling indexcrop types |
| spellingShingle | Qingmiao Yang Hanwen Liu Biao Tang Chunxiao Yu Shide Dong Yang Li Guangxu Cui Yi Zhang Guangmei Wang Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types Microorganisms rare microbial taxa abundant microbial taxa soil multi-nutrient cycling index crop types |
| title | Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types |
| title_full | Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types |
| title_fullStr | Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types |
| title_full_unstemmed | Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types |
| title_short | Rare Taxa as Key Drivers of Soil Multi-Nutrient Cycling Under Different Crop Types |
| title_sort | rare taxa as key drivers of soil multi nutrient cycling under different crop types |
| topic | rare microbial taxa abundant microbial taxa soil multi-nutrient cycling index crop types |
| url | https://www.mdpi.com/2076-2607/13/3/513 |
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