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Responses of soil nutrients and rhizosphere microbial communities of a medicinal plant Pinellia ternata to vermicompost

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Abstract

Vermicomposting is an important strategy for restoring soil function and fertility. However, information on the effects of vermicompost application in intensive Pinellia ternata planting systems has rarely been reported. Here, we focus on the effects of different vermicompost levels and chemical fertilizer (CF) strategies on soil chemical properties, soil enzymes, and soil rhizosphere microbial communities (bacteria and fungi) in a field experiment. Compared to no added fertilizers (CK), vermicompost was more effective than the CF treatment in increasing P. ternata yield. We found that the 5 t ha−1 vermicompost treatment (VC2) significantly increased the tuber yield by 44.43% and 6.55% compared to the CK and CF treatment, respectively, and water-soluble exudates by 6.56% and 9.63% (P < 0.05). The vermicompost and CF treatments significantly increased the total phosphorus (TP), urease (Ure), and soil catalase (Cat) contents (P < 0.05). Compared to the vermicompost and CK treatments, the CF treatment significantly decreased soil organic carbon (SOC), C/N ratio, and soil acid phosphatase (Pac) (P < 0.05). Redundancy analysis (RDA) showed that Ure and total potassium (TK) were the major drivers in the bacterial community, whereas TP, total nitrogen (TN), Pac, and TK were the major drivers in the fungal community. We also found a positive correlation between soil enzyme activities, including between Ure and bacterial genera (Clostridium, Pseudoclavibacter, Stella, Hyphomicrobium, Mesorhizobium, and Adlercreutzia). In summary, vermicompost application promotes P. ternata soil microecosystems and improves soil fertility, soil enzyme activities, and rhizosphere microbial structure and function. Vermicomposting is a novel and promising approach to sustainable ecological cultivation of Chinese herbs via the promotion of soil properties and beneficial organisms.

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Acknowledgements

We are grateful to Prof Gaoming Jiang (Institute of Botany, the Chinese Academy of Sciences), who helped us during the research.

Funding

This research was supported financially by the Hebei Natural Science Foundation, China (H2022423004), the Hebei Administration of Traditional Chinese Medicine, China (Grant Nos. 2022098, 2022365), the Doctoral Research Foundation of Hebei University of Chinese Medicine, China (BSZ2020007, BSZ2021019), the Modern Agricultural Technology Innovation Team Project in Hebei Province, China (HBCT2018060205), the Basic Scientific Research Foundation of Hebei University of Chinese Medicine (JCYJ2022006), the Research and Application of Pinellia ternata Breeding Subproject of “Scientific and Technological Innovation Team of Modern Seed Industry of Chinese Medicinal Materials”, the Key Research and Development Project of Hebei Province (21326312D-3), the Traditional Chinese Medicine Resources Survey Project of China (Z135080000022), and the Hebei Technology Innovation Center for Green Management of Soil-borne Diseases (Baoding University) (2022K05).

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XG and JMJ designed the study; JYZ, XG, and HYF wrote the MS; YSZ and YGZ helped create diagrams, formal analysis, and investigation; JYZ, HYF, YSZ, YGZ, JMJ, and XG revised and edited the MS. All the authors have read and agreed to the published version of the manuscript.

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Correspondence to Jianming Jiang or Xian Gu.

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Zhang, J., Fang, H., Zhao, Y. et al. Responses of soil nutrients and rhizosphere microbial communities of a medicinal plant Pinellia ternata to vermicompost. 3 Biotech 13, 353 (2023). https://doi.org/10.1007/s13205-023-03780-z

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