Interactions of soil bacteria and fungi with plants during long-term grazing exclusion in semiarid grasslands

Zhang, Chao; Liu, Guobin; Song, Zilin; Wang, Jie; Guo, Liang

doi:10.1016/j.soilbio.2018.05.026

Cited by 137 publications

(81 citation statements)

References 64 publications

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“…Grazing exclusion had a positive effect on the bulk soil bacterial and fungal richness and diversity. These findings might be related to the high-productivity grassland without the disturbance of livestock (Zhang et al, 2018). Grazing impacts soil microbial communities by causing changes in plant composition and soil properties through trampling, defoliation, and urine deposition (Marcos, Bertiller & Olivera, 2019).…”

Section: Effects Of Grazing Exclusion On Soil Microbial Communities Amentioning

confidence: 98%

“…Grazing exclusion can not only change ecosystem processes to promote the survival of local plants, but can also affect the activity and structure of soil microbial communities by increasing nutrient availability (Bastida et al, 2013;Zhang et al, 2018). The soil microbial community is a key driver of grassland ecosystems and of crucial importance for soil functioning (Bardgett, Wardle & Yeates, 1998).…”

Section: Introductionmentioning

confidence: 99%

“…Many studies have demonstrated that grazing exclusion can have considerable effects on soil microbial communities, often with consequences for plant community dynamics ( Cheng et al, 2016 ; Bi et al, 2018 ). It has also been shown that bacteria recover faster than fungi and with the rates being differentially governed by plant diversity ( Zhang et al, 2018 ). Although these past studies provide important insights into grazing exclusion and microbial communities, up to now few data have been available concerning the impacts of grazing exclusion on soil microbial interactions.…”

Section: Introductionmentioning

confidence: 99%

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Soil fungal networks are more sensitive to grazing exclusion than bacterial networks

Chen

Shi

Bao

et al. 2020

PeerJ

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Soil microbial communities play a crucial role in ecological restoration, but it is unknown how co-occurrence networks within these communities respond to grazing exclusion. This lack of information was addressed by investigating the effects of eight years of grazing exclusion on microbial networks in an area of Stipa glareosa P. Smirn desert steppe in northern China. Here, we show that fungal networks were more sensitive to grazing exclusion than bacterial networks. Eight years of grazing exclusion decreased the soil fungal community stability via changes in plant composition and reductions in soil total organic carbon, in this case triggering negative effects on the S. glareosa desert steppe. The results provide new insights into the response mechanisms of soil microbes to grazing exclusion and offer possible solutions for management issues in the restoration of degraded desert steppe.

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Section: Effects Of Grazing Exclusion On Soil Microbial Communities Amentioning

confidence: 98%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Soil fungal networks are more sensitive to grazing exclusion than bacterial networks

Chen

Shi

Bao

et al. 2020

PeerJ

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“…Ascomycota, Basidiomycota, and Chytridiomycota were detected as the dominant fungal phyla in RP, NF, and CK, which was not in accordance with the findings discovered in the Loess Plateau afforested lands F I G U R E 5 Cladogram of soil bacteria (a) and fungi (b) in different treatments via LEfSe method identifies the significantly different abundant taxa. RP, Robinia pseudoacacia; NF, natural forest; CK, unrestored area [Colour figure can be viewed at wileyonlinelibrary.com] (Ren et al, 2018;Zhang, Liu, Song, Wang, & Guo, 2018) and in the Ziwuling secondary forest area (Ren et al, 2019). The phylum Ascomycota is by far the largest group in the fungal kingdom, which could adapt to multiple environments (Beimforde et al, 2014;Blackwell, 2011).…”

Section: Soil Microbial Communities Response To Different Treatmentsmentioning

confidence: 99%

Response of soil environment factors and microbial communities to phytoremediation with Robinia pseudoacacia in an open‐cut magnesite mine

et al. 2020

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Overexploitation of magnesium has caused serious environmental pollution, and the ecological restoration of magnesite mines has attracted increasing attention in China. The aim of this study was to assess the effects of phytoremediation with Robinia pseudoacacia (RP) on soil quality and microbial communities in magnesite mines. Here, soil samples were collected from restored areas (R. pseudoacacia), natural forest (NF), and unrestored areas (CK), and the soil microbial communities were assessed by Illumina high-throughput sequencing. Phytoremediation with R. pseudoacacia could alleviate soil alkalization and contribute to the accumulation of soil nutrients. A total of 531,329 effective 16S rRNA and 596,344 valid Internal Transcribed Spacer rRNA gene sequences were obtained, which were classified into 30 bacterial and 12 fungal phyla. The predominant bacterial and fungal phyla were Proteobacteria and Ascomycota, respectively. Bacterial diversity indices of RP were higher than those of the CK, both of which were lower than those in the NF site. While, fungal Chao1 and ACE (abundance-based coverage estimator) indices of RP were higher than those of the CK and even surpassed those in the NF site. Soil microbial communities significantly differed among different treatments, and the effects of soil factors on microbial communities were comprehensive and not determined by a single factor. Generally, these results indicated that phytoremediation with R. pseudoacacia could effectively improve the soil environment of the abandoned magnesium mine, which provide useful insights and practical references for the suitable species that would be planted on magnesite mine for restoration.

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“…The increased competition for resources with vegetation succession excluded species with lower competitive capacities, for example, Setaria viridis, Heteropappus altaicus, and A. capillaries (Table 1), resulting in a net decrease in species richness and diversity between 22 and 32 years after farm abandonment (Arroyo, Pueyo, Saiz, & Alados, 2015;Liu et al, 2017;Tilman, 1985;Zhang, Wang, Liu, Song, & Fang, 2019). Plant diversity has been considered an important determinant of grassland productivity (Chen et al, 2018;Tilman, Reich, & Isbell, 2012;Zhang, Liu, Song, Wang, & Guo, 2018). In this study, plant diversity also had a direct positive influence on the plant belowground biomass and had an indirect positive effect on the plant aboveground biomass (Figure 7).…”

Section: Interactions Among Plant-mycorrhizae Association Plant DImentioning

confidence: 99%

Plant‐mycorrhizae association affects plant diversity, biomass, and soil nutrients along temporal gradients of natural restoration after farmland abandonment in the Loess Plateau, China

Liu

Liang

et al. 2019

Land Degrad Dev

Self Cite

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The interaction between plants and arbuscular mycorrhizal fungi in the rhizosphere plays a vital role in driving vegetation recovery and restoration of soil nutrients. However, how this interaction affects vegetation succession and how soil nutrient recovery is driven by vegetation restoration and rhizosphere processes are still largely unknown. In this study, a well‐documented grassland restoration chronosequence on the Loess Plateau, China (fields at 0, 7, 12, 17, 22, and 32 years after farmland abandonment and a natural grassland reference) was selected. The species richness and diversity reached maximum values between 17 and 22 years after farmland abandonment, whereas the plant total above and belowground biomasses simultaneously peaked at 22 years and then remained stable. In the dominant plant rhizosphere and bulk soil concentrations of total glomalin‐related soil protein (including both old and recently produced fungal proteins) substantially increased from 3.58 to 4.87 g kg−1 and from 2.67 to 3.86 g kg−1, respectively, between 12 and 32 years after farmland abandonment. The concentrations of soil organic carbon (SOC) and total nitrogen (TN) in the plant rhizosphere and bulk soil significantly increased between 17 and 32 years and reached the levels of the natural grassland. The aboveground plant biomass, soil SOC, and TN concentrations were positively correlated with the glomalin‐related soil protein (GRSP) concentration (p < .05). Our study suggested that interactions among plant‐mycorrhizae association, plant diversity, and biomass promote GRSP and nutrient accumulation in the plant rhizosphere and bulk soil, and GRSP largely contributes to SOC stabilization and the accumulation of SOC and TN.

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Interactions of soil bacteria and fungi with plants during long-term grazing exclusion in semiarid grasslands

Cited by 137 publications

References 64 publications

Soil fungal networks are more sensitive to grazing exclusion than bacterial networks

Soil fungal networks are more sensitive to grazing exclusion than bacterial networks

Response of soil environment factors and microbial communities to phytoremediation with Robinia pseudoacacia in an open‐cut magnesite mine

Plant‐mycorrhizae association affects plant diversity, biomass, and soil nutrients along temporal gradients of natural restoration after farmland abandonment in the Loess Plateau, China

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