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A foliar Epichloë endophyte and soil moisture modified belowground arbuscular mycorrhizal fungal biodiversity associated with Achnatherum inebrians

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A Correction to this article was published on 04 May 2020

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Abstract

Background and aims

Fungal symbionts, present in above and in belowground tissues, such as that of Epichloë endophytes and arbuscular mycorrhizal (AM) fungi, respectively, can modify the responses of host plants to environmental changes. Individual grass plants of the subfamily Pooideae can be host to both a foliar Epichloë endophytic fungus and root-associated AM fungi. Understanding the multiple interactions among above- and belowground symbionts and their host is an important step in understanding terrestrial ecosystems.

Methods

A field experiment was conducted to study the effects of E. gansusensis endophyte and soil moisture on the belowground AM fungal biodiversity associated with Achnatherum inebrians, through amplicon sequencing technology. Soil properties were compared among stands using standard techniques.

Results

Our results show that E. gansusensis increased root-associated AM fungal diversity under drought conditions, while decreasing diversity under the water addition treatment. Water addition and water stress treatments decreased the diversity and richness of the AM fungal community in rhizosphere soil compared to the normal treatment. The E. gansusensis altered the composition of the root-associated AM fungal community. Aboveground biomass was closely positively related to the abundance of Funneliformis in the root and the diversity of the rhizosphere soil AM fungal community was positively related to the soil total nitrogen and phosphorus.

Conclusion

This study suggested that soil moisture regimes shifted the effects of E. gansuensis on the diversity of the root-associated AM fungal community from positive to negative; moreover, soil moisture and foliar E. gansusensis altered soil properties, thereby affecting belowground AM fungi.

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Change history

  • 04 May 2020

    The original version of this paper unfortunately contained errors, the spelling of one Latin name in some places was published incorrectly.

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Acknowledgements

We wish to thank the editor and anonymous reviewers for their valuable comments, Michael Christensen retired from AgResearch, Grasslands Research Centre, New Zealand, for polishing the English and his beneficial suggestions. This work was financially supported by the National Nature Science Foundation of China (31772665), Program for Changjiang Scholars and Innovative Research Team in University of China (IRT17R50), and the Open Foundation of Research Institute of Qilian Mountains (504000-87080305), Lanzhou University.

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  1. State key Laboratory of Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation, Ministry of Agriculture and Rural Affairs, Center for Grassland Microbiome, College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou, 730020, People’s Republic of China

    Rui Zhong, Chao Xia, Yawen Ju, Xingxu Zhang, Tingyu Duan, Zhibiao Nan & Chunjie Li

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  5. Tingyu Duan
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  6. Zhibiao Nan
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  7. Chunjie Li
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Correspondence to Xingxu Zhang or Zhibiao Nan.

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Zhong, R., Xia, C., Ju, Y. et al. A foliar Epichloë endophyte and soil moisture modified belowground arbuscular mycorrhizal fungal biodiversity associated with Achnatherum inebrians. Plant Soil 458, 105–122 (2021). https://doi.org/10.1007/s11104-019-04365-7

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