N-fertilizer-driven association between the arbuscular mycorrhizal fungal community and diazotrophic community impacts wheat yield

Zhu, Chen; Tian, Guangli; Luo, Gongwen; Kong, Yali; Guo, Junjie; Wang, Min; Guo, Shiwei; Ling, Ning

doi:10.1016/j.agee.2017.11.029

Cited by 66 publications

(37 citation statements)

References 70 publications

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“…Nitrogen addition directly drives changes in bacterial and fungal communities in different terrestrial ecosystems by increasing N availability (Cox et al, 2010;Fierer et al, 2012;Yuan et al, 2016;Treseder et al, 2018;Zhu et al, 2018). Our results found a decrease in the abundance of Acidobacteria after N fertilization in the pot experiment.…”

Section: Direct and Indirect Effects Of N Fertilization On Microbial supporting

confidence: 48%

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Plant-plant interactions and N fertilization shape soil bacterial and fungal communities

Guo

Yan

Korpelainen

et al. 2019

Soil Biology and Biochemistry

107

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The impact of conspecific and heterospecific neighboring plants on soil bacterial and fungal communities has never been explored in a forest ecosystem. In the present study, we first investigated soil microbial communities in three plantations: Larix kaempferi monoculture, L. olgensis monoculture and their mixture. Then, a two-year growth experiment was conducted to investigate the effects of intra-and inter-specific plant interactions of L. kaempferi and L. olgensis on rhizosphere microbial communities in different nitrogen conditions. The results demonstrated clear differences in the beta-diversity and composition of bacteria and fungi among the three plantations, which implied different effects of plant-plant interactions on soil microbial communities. The results of the pot experiment showed that L. kaempferi suffered from greater negative effects from its conspecific neighbor regardless of the N fertilization, whereas the negative effect declined when L. kaempferi was grown with L. olgensis under N fertilization. Changes in intra-and inter-specific plant interactions significantly impacted the chemical and biological properties of soil under N fertilization, with lower concentrations of NH4 + , and lower soil microbial biomass (CMic) and soil carbon nitrogen biomass (NMic) under intra-specific plant interactions of L. kaempferi (KK) compared to inter-specific interactions of L. kaempferi and L. olgensis (KO). N fertilization increased bacterial and fungal alpha diversities in the rhizosphere soil of KO. For the beta diversity, the PERMANOVA results demonstrated that there was a significant impact of intra-and inter-specific plant interactions on soil microbial communities, with KK significantly differing from intra-specific plant interactions of L. olgensis (OO) and KO. The two plant species 3 and N fertilization showed specific effects on the soil microbial composition, particularly on the fungal community. Both L. olgensis and N fertilization increased the abundance of Ascomycota but reduced that of Basidiomycota, and even shifted the dominance of Basidiomycota to Ascomycota in KO under N fertilization. Based on our results, we suggest that L. kaempferi planted with L. olgensis under N fertilization may be an efficient way to promote the productivity of plantations.

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Section: Direct and Indirect Effects Of N Fertilization On Microbial supporting

confidence: 48%

“…Changes in soil nutrients induced by plant-plant competition contribute to alterations in soil microbes (Fierer et al, 2012;Yuan et al, 2016;Treseder et al, 2018;Zhu et al, 2018). Secondly, we observed a weakened neighbor effect caused by L. kaempferi on L. olgensis in the inter-specific plant interactions.…”

Section: Effects Of Plant-plant Interactionsmentioning

confidence: 60%

Plant-plant interactions and N fertilization shape soil bacterial and fungal communities

Guo

Yan

Korpelainen

et al. 2019

Soil Biology and Biochemistry

107

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“…Another important benefit of network analysis in microbial ecology studies is the ability to identify central organisms in maintaining soil ecosystems, according to the network theory, the "hub" species, as hotspots of connections in the microbial network, are the most important mediators for the complicated interactions among different species constituting the soil ecosystem (Montoya et al, 2006). According to the method described by the previous study (Zhu et al, 2018), 10 nodes with the most edges were defined as network hubs. Planctomycetes, Proteobacteria, and Bacteroidetes were the predominant phyla occupying 63.3% of the network hubs among the different salinity treatments (Figure 6).…”

Section: Changes In Diversity and Structure Of Microbial Community Inmentioning

confidence: 99%

Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain

et al. 2020

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Songnen Plain is originally one of the three major glasslands in China and has now become one of the three most concentrated distribution areas of sodic-saline soil worldwide. The soil is continuously degraded by natural and anthropogenic processes, which has a negative impact on agricultural production. The investigation of microbial diversity in this degraded ecosystem is fundamental for comprehending biological and ecological processes and harnessing the potential of microbial resources. The Illumina MiSeq sequencing method was practiced to investigate the bacterial diversity and composition in saline-alkali soil. The results from this study show that the change in pH under alkaline conditions was not the major contributor in shaping bacterial community in Songnen Plain. The electrical conductivity (EC) content of soil was the most important driving force for bacterial composition (20.83%), and the second most influencing factor was Na + content (14.17%). Bacterial communities were clearly separated in accordance with the EC. The dominant bacterial groups were Planctomycetes, Proteobacteria, and Bacteroidetes among the different salinity soil. As the salt concentration increased, the indicators changed from Planctomycetes and Bacteroidetes to Proteobacteria and Firmicutes. Our results suggest that Proteobacteria and Firmicutes were the main indicator species reflecting changes of the main microbial groups and the EC as a key factor drives the composition of the bacterial community under alkaline conditions in saline-alkali soil of Songnen Plain.

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“…We investigated whether the N fertilization modulated the resistance (the ability to withstand the stress) and resilience (the ability to recover from stress) of microbial functions in response to repeated DW cycles, and whether this resistance and resilience further affect soil functions with downstream consequences for crop production. For these purposes, soils from an 8-year rice-wheat rotation experiment with increasing N-input rates (Zhu et al 2018) was subjected to DW cycles under controlled conditions. Quantitative PCR was employed to quantify the abundance of genes associated with major C, N transformations as well as P mineralization.…”

Section: Introductionmentioning

confidence: 99%

Nitrogen-inputs regulate microbial functional and genetic resistance and resilience to drying–rewetting cycles, with implications for crop yields

et al. 2019

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Background and aims The increasing input of anthropogenically-derived nitrogen (N) to ecosystems raises a crucial question: how do N inputs modify the soil microbial stability, and thus affect crop productivity? Methods Soils from an 8-year rice-wheat rotation experiment with increasing N-input rates were subjected to drying-rewetting (DW) cycles for investigating the resistance and resilience of soil functions, in terms of abundances of genes (potential functions) and activities of enzymes (quantifiable functions), to this stress, and particularly the contribution of resistance and resilience on crop production was evaluated. Results Although the DW cycles had a stronger effect compared to N fertilization level, the N input was also important in explaining the variation in the resistance and resilience of functional genes and the activities of enzymes involved in C, N and P cycling. Crop yields benefited from both of high resistance and high resilience of soil microbial functions, though the resistance and resilience of soil enzyme activities exhibited a stronger contribution to crop yields compared to the functional genes and the overall contribution strength was conditioned by N input levels. Conclusions In addition to the well-known direct contribution of N fertilization on crop yields, N input plays an indirect role on crop production via conditioning the resistance and resilience of soil functions in response to repeated DW cycles.

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N-fertilizer-driven association between the arbuscular mycorrhizal fungal community and diazotrophic community impacts wheat yield

Cited by 66 publications

References 70 publications

Plant-plant interactions and N fertilization shape soil bacterial and fungal communities

Plant-plant interactions and N fertilization shape soil bacterial and fungal communities

Exploring Soil Factors Determining Composition and Structure of the Bacterial Communities in Saline-Alkali Soils of Songnen Plain

Nitrogen-inputs regulate microbial functional and genetic resistance and resilience to drying–rewetting cycles, with implications for crop yields

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