Abstract
Purpose
Understanding the interactions among soil microbial communities, soil multifunctionality, and soil-borne pathogens are important for ecological prevention and control of soil-borne diseases. In this study, we aimed to compare the differences in microbial communities and multifunctionality between healthy and Alternaria solani-infected potato rhizosphere soils. Additionally, we investigated the relationships among soil microbial communities, soil multifunctionality, and potato early blight incidence.
Methods
We collected healthy and Alternaria solani-infected potato rhizosphere soil samples from a potato field in Ningbo, Zhejiang, China. Amplicon sequencing was used to detect changes in soil microbial communities. The Z scores (standard scores) of soil chemical properties, soil enzyme activities, and potato yield were averaged to obtain soil multifunctionality.
Results
We found significantly reduced potato yield, soil multifunctionality, and bacterial richness under diseased conditions. Additionally, there were significant differences between healthy and diseased rhizosphere soil microbial communities. Specific microbial taxa including Kaistobacter, Candidatus Koribacter, Candidatus Solibacter, Rhodoplanes, Bradyrhizobium, Gynumella, Massilia, Alicyclobacillus, Mycochlamys, and Conocybe were enriched in diseased rhizosphere soils. The complexity of microbial co-occurrence networks decreased. The proportion of positive correlations among microbial taxa decreased, whereas the proportion of negative correlations increased in diseased rhizosphere soils. These changes were strongly associated with decreased soil multifunctionality.
Conclusion
Our results increased our comprehension of the interactions among soil microbial communities, multifunctionality, and potato early blight, thus providing important implications for the design and implementation of control strategies against soil-borne diseases in the future.
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Data availability
The datasets generated during and/or analyzed during the current study are available from the corresponding author upon reasonable request.
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Acknowledgements
We would like to thank Editage (www.editage.cn) for English language editing.
Funding
This study was financially supported by the Key Project of Science and Technology Innovation in Ningbo City (2021Z101 and 2021Z04), the Fundamental Research Funds for the Central Universities, China, University of Geosciences (Wuhan) (CUG170104), and the K. C. Wong Magna Fund of Ningbo University.
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Fang Wang: Conceptualization, Methodology, Resources, Investigation. Fangyan Wang: Data curation, Software, Visualization, Writing-Original Draft Preparation. Haoqing Zhang: Validation, Writing-Reviewing and Editing. Fangjin Qin: Writing- Reviewing and Editing. Wu Xiang: Writing- Reviewing and Editing. Chuanfa Wu: Investigation. Chengqi Yan: Supervision. Zhengke Zhu: Writing-Review and Editing. Jianping Chen: Project Administration, Funding Acquisition. Tida Ge: Writing-Review and Editing, Supervision. All authors have read and agreed to the published version of the manuscript.
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Wang, F., Wang, F., Zhang, H. et al. Deciphering differences in microbial community composition and multifunctionality between healthy and Alternaria solani-infected potato rhizosphere soils. Plant Soil 484, 347–362 (2023). https://doi.org/10.1007/s11104-022-05797-4
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DOI: https://doi.org/10.1007/s11104-022-05797-4