Abstract
Main conclusion
Synthetic consortia performed better in promoting Schisandra chinensis growth than individual strains, and this result provides valuable information for the development of synthetic microbial fertilizers.
Abstract
Schisandra chinensis is an herbal medicine that can treat numerous diseases. However, the excessive reliance on chemical fertilizers during the plantation of S. chinensis has severely restricted the development of the S. chinensis planting industry. Plant growth-promoting rhizobacteria (PGPR) can promote the growth of a wide range of crops, and synthetic consortia of them are frequently superior to those of a single strain. In this study, we compared the effects of four PGPR and their synthetic consortia on S. chinensis growth. The pot experiment showed that compared with the control, synthetic consortia significantly increased the plant height, biomass, and total chlorophyll contents of S. chinensis, and their combined effects were better than those of individual strains. In addition, they improved the rhizosphere soil fertility (e.g., TC and TN contents) and enzyme activities (e.g., soil urease activity) and affected the composition and structure of soil microbial community significantly, including promoting the enrichment of beneficial microorganisms (e.g., Actinobacteria and Verrucomicrobiota) and increasing the relative abundance of Proteobacteria, a dominant bacterial phylum. They also enhanced the synergistic effect between the soil microorganisms. The correlation analysis between soil physicochemical properties and microbiome revealed that soil microorganisms participated in regulating soil fertility and promoting S. chinensis growth. This study may provide a theoretical basis for the development of synthetic microbial fertilizers for S. chinensis.
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Data availability
Data will be made available on request. Raw data of soil microbe are available in the NCBI database under the accession number PRJNA1042936 (https://dataview.ncbi.nlm.nih.gov/object/PRJNA1042936?reviewer=lkel3ktbvieob7trmmbarpaqbl).
Abbreviations
- AN:
-
Available nitrogen
- ACu:
-
Available copper
- AFe:
-
Available iron
- AK:
-
Available potassium
- AMn:
-
Available manganese
- AP:
-
Available phosphorus
- AZn:
-
Available zinc
- ASV:
-
Amplicon sequence variant
- OM:
-
Organic matter
- PGPR:
-
Plant growth-promoting rhizobacteria
- RDA:
-
Redundancy analysis
- Sff:
-
Sterile fermentation filtrate
- SynCom:
-
Synthetic communities
- TC:
-
Total carbon
- TN:
-
Total nitrogen
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Acknowledgements
This work was supported by the National Key Research and Development Program of China (No. 2021YFD1000203).
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Yan Li: conceptualization, data curation, writing––original draft preparation; Zanbo Ding: software and methodology; Tengqi Xu: methodology and visualization; Yulong Wang, Qiaolu Wu, and Tianjiao Song: visualization and investigation; Xiaomin Wei and Juane Dong: validation; and Yanbing Lin: supervision and conceptualization.
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Li, Y., Ding, Z., Xu, T. et al. Synthetic consortia of four strains promote Schisandra chinensis growth by regulating soil microbial community and improving soil fertility. Planta 259, 135 (2024). https://doi.org/10.1007/s00425-024-04410-5
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DOI: https://doi.org/10.1007/s00425-024-04410-5