Changes in soil bacterial and fungal communities in response to Bacillus megaterium NCT-2 inoculation in secondary salinized soil
| Autor: | Yuee Zhi, Yaowei Chi, Xijia Yang, Bin Wang, Shaohua Chu, Xiaorui Liu, Pei Zhou, Dan Zhang, Xiao-Tong Chai |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2021 |
| Předmět: |
Environmental remediation
Nitrogen assimilation Soil Science Nitrate Microbiology General Biochemistry Genetics and Molecular Biology chemistry.chemical_compound parasitic diseases Microbial community Ectomycorrhizal fungi Agricultural Science Microbial inoculant Bacillus megaterium biology Ecology Bacillus megaterium NCT-2 Inoculation General Neuroscience Community structure General Medicine biology.organism_classification Microbial population biology Agronomy chemistry FUNGuild Medicine General Agricultural and Biological Sciences Environmental Contamination and Remediation |
| Zdroj: | PeerJ, Vol 9, p e12309 (2021) PeerJ |
| ISSN: | 2167-8359 |
| Popis: | Background Secondary salinized soil in greenhouses often contains excess nitrate. Inoculation of Bacillus megaterium NCT-2 with nitrate assimilation ability represents an attractive approach for soil remediation. However, the effects of NCT-2 on the structure and function of soil microbial communities have not been explored. Methods Greenhouse experiments were carried out to investigate changes in soil properties, Brassica chinensis L. growth, bacterial, and fungal community structure and function in response to NCT-2 inoculation. Results The NCT-2 inoculant significantly reduced the nitrate content in B. chinensis and inhibited the rebound of soil nitrate in the later stage. The shifts of bacterial community structure and function by NCT-2 was negligible, and a greater disturbance of soil fungal community structure and function was observed, for example the strong inhibitory effect on ectomycorrhizal fungi. These results indicated that the NCT-2 inoculant likely achieved the remediation effect in secondary salinized soil by shifting fungal community. The present findings add to the current understanding of microbial interactions in response to bacterial inoculation and can be of great significance for the application of NCT-2 inoculants in secondary salinized soil remediation. |
| Databáze: | OpenAIRE |
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