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Multifunctionality and microbial communities in agricultural soils regulate the dynamics of a soil-borne pathogen

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Abstract

Aims

Determining the soil factors that drive the dynamics of soil-borne pathogens is an essential step toward the formulation and implementation of strategies for the control of plant diseases.

Methods

We sampled 48 healthy and infected soils in peanut fields from six counties in Eastern China to explore the relationships between soil multifunctionality, microbial communities, and peanut stem rot pathogen, Athelia rolfsii.

Results

The results showed that peanut stem rot infection did not affect soil microbial richness, but it increased soil multifunctionality, altered the microbial community composition, and decreased the complexity of microbial co-occurrence networks significantly. Soil biotic and abiotic factors had markedly effects on A. rolfsii, and specific soil functions and microbial taxa were significantly associated with A. rolfsii abundance. Soil multifunctionality and microbial community compositions negatively affected A. rolfsii abundance, while the effects of bacterial and fungal richness were contrasting for healthy and infected soils. Longitude and latitude indirectly and positively affected A. rolfsii abundance.

Conclusions

The results demonstrate that soil multifunctionality and microbial communities play a vital role in regulating the dynamics of peanut stem rot pathogen, which could enhance our understanding of the relationships between soil factors, pathogen dynamics, and plant health.

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Abbreviations

C:

carbon

N:

nitrogen

P:

phosphorus

S:

sulfur

OTUs:

operational taxonomic units

ANOVA:

analysis of variance

NMDS:

Nonmetric multidimensional scaling

PERMANOVA:

permutational multivariate ANOVA

References

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Acknowledgements

This work was supported by the National Science Foundation of China (41830755, 41671261, and 31672241).

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Correspondence to Peng Shi or Gehong Wei.

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The authors declare that they have no conflicts of interest.

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Responsible Editor: Stéphane Compant.

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Guo, Y., Luo, H., Wang, L. et al. Multifunctionality and microbial communities in agricultural soils regulate the dynamics of a soil-borne pathogen. Plant Soil 461, 309–322 (2021). https://doi.org/10.1007/s11104-020-04826-4

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  • DOI: https://doi.org/10.1007/s11104-020-04826-4

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