Distinct Responses of Rare and Abundant Microbial Taxa to
            <i>In Situ</i>
            Chemical Stabilization of Cadmium-Contaminated Soil

Xu, Min; Huang, Qiaoyun; Xiong, Zhenqian; Liao, Hao; Lv, Zhenguang; Chen, Wenli; Luo, Xuesong; Hao, Xiuli

doi:10.1128/msystems.01040-21

Cited by 73 publications

(34 citation statements)

References 80 publications

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“…Although the alpha diversity seemed more stable in the rare community, greater community dissimilarity (beta diversity) and more contributions to the overall community dissimilarity after perturbations than that of the abundant community were observed. These results agree with the findings of other studies in which the rare bacterial community was more sensitive to environmental changes than the abundant bacterial community in the beta diversity dimension ( 27 ). The sensitivity of the rare taxa could be explained by their narrow environmental breadths to environmental changes ( 28 ).…”

Section: Discussionsupporting

confidence: 93%

Temporal Dynamics of Rare and Abundant Soil Bacterial Taxa from Different Fertilization Regimes Under Various Environmental Disturbances

et al. 2022

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Section: Discussionsupporting

confidence: 93%

Temporal Dynamics of Rare and Abundant Soil Bacterial Taxa from Different Fertilization Regimes Under Various Environmental Disturbances

et al. 2022

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“…Furthermore, most of these bacterial keystone taxa were rare species, whereas the only fungal keystone identified was an abundant species. Indeed, a growing number of studies have highlighted the key role that rare species play in maintaining microbial community structure ( Power et al, 1996 ; Xu et al, 2021 ; Zhu et al, 2021b ). Generally, rare taxa of bacteria are highly active, as indicated by higher 16S rRNA/rRNA genes, and can increase rapidly under changing environments ( Campbell et al, 2011 ).…”

Section: Discussionmentioning

confidence: 99%

“…In addition, the lack of sensitivity of rare species to abiotic changes caused by the fact that these rare species are neither opportunistic nor take advantage of the reduction of dominant species may be the reason why rare species become the majority of keystones ( Kurm et al, 2019 ). Notably, most rare bacterial species and abundant fungal species as keystone taxa that played important roles in maintaining the stability of intra-kingdom microbial co-occurrence networks have also been reported in cadmium-contaminated soil, but whether or not this phenomenon was random requires further study ( Xu et al, 2021 ).…”

Section: Discussionmentioning

confidence: 99%

“…According to Xu et al (2021) , based on the relative abundance and occurrence frequency of OTUs in samples, they were divided into six classifications: always abundant taxa (AAT) with relative abundance >1% in all samples, conditionally abundant taxa (CAT) with relative abundance >1% in some samples and never <0.01%, always rare taxa (ART) with relative abundance <0.01% in all samples, conditionally rare taxa (CRT) with relatice abundance <1% in all samples and <0.01% in some samples, moderate taxa (MT) with relative abundance between 0.01 and 1% in all samples, and conditionally rare and abundant taxa (CRAT) with relative abundance ranging from rare (< 0.01%) to abundant (>1%). Among these classifications, AAT, CAT, and CRAT were considered abundant taxa, whereas ART and CAT were regarded as rare abundant taxa.…”

Section: Methodsmentioning

confidence: 99%

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Shifts in Soil Microbial Community Composition, Function, and Co-occurrence Network of Phragmites australis in the Yellow River Delta

Zhu

Yang

et al. 2022

Front. Microbiol.

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Soil microorganisms play vital roles in regulating biogeochemical processes. The composition and function of soil microbial community have been well studied, but little is known about the responses of bacterial and fungal communities to different habitats of the same plant, especially the inter-kingdom co-occurrence pattern including bacteria and fungi. Herein, we used high-throughput sequencing to investigate the bacterial and fungal communities of five Phragmites australis habitats in the Yellow River Delta and constructed their inter-kingdom interaction network by network analysis. The results showed that richness did not differ significantly among habitats for either the bacterial or fungal communities. The distribution of soil bacterial community was significantly affected by soil physicochemical properties, whereas that of the fungal community was not. The main functions of the bacterial and fungal communities were to participate in the degradation of organic matter and element cycling, both of which were significantly affected by soil physicochemical properties. Network analysis revealed that bacteria and fungi participated in the formation of networks through positive interactions; the role of intra-kingdom interactions were more important than inter-kingdom interactions. In addition, rare species acted as keystones played a critical role in maintaining the network structure, while NO3−−N likely played an important role in maintaining the network topological properties. Our findings provided insights into the inter-kingdom microbial co-occurrence network and response of the soil microbial community composition and function to different P. australis habitats in coastal wetlands, which will deepen our insights into microbial community assembly in coastal wetlands.

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“…Biochar treatments may have little effect on the distribution and reconstructing the abundant and rare fungal taxa in the soil. Studies have shown that the rare microbial taxa can act as a microbial seed bank to safeguard the entire community ( Dong et al, 2021 ; Xu et al, 2021 ). Our results demonstrated that the rare bacterial taxa (such as cyanobacteria ) get activated by biochar, and thus maintained the bacterial community stability under pollution stress, which was not the case in the group with no biochar application.…”

Section: Discussionmentioning

confidence: 99%

Biochar rebuilds the network complexity of rare and abundant microbial taxa in reclaimed soil of mining areas to cooperatively avert cadmium stress

Zhu

Wang

et al. 2022

Front. Microbiol.

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Understanding the interactions between the soil microbial communities and species is critical in the remediation of heavy metal-contaminated soil. Biochar has been widely applied as a stabilizer in the in situ remediation of cadmium (Cd)-contaminated soils in mining areas. However, the rebuilding of the microbial taxa of rare and abundant species by biochar and their cooperative resistance to Cd stress remains elusive. In this pursuit, the present study envisaged the effects of two types of biochars viz., poplar bark biochar (PB) and thiourea-modified poplar bark biochar (TP) on the rare and abundant bacterial and fungal taxa by using pot experiments. The results demonstrated that the PB and TP treatments significantly reduced the leached Cd content, by 35.13 and 68.05%, respectively, compared with the control group (CK), in the reclaimed soil of the mining area. The application of biochar significantly improved the physicochemical properties like pH and Soil Organic Matter (SOM) of the soil. It was observed that TP treatment was superior to the PB and CK groups in increasing the diversity of the soil abundant and rare species of microbial taxa. Compared with the CK group, the application of PB and TP enhanced and elevated the complexity of the microbial networks of rare and abundant taxa, increased the number and types of network core microorganisms, reshaped the network core microorganisms and hubs, and boosted the microbial resistance to Cd stress. Our results indicate the response of rare and abundant microbial taxa to biochar application and the mechanism of their synergistic remediation of Cd-contaminated soil, thereby providing technical feasibility for in situ remediation of Cd-contaminated soil in mining areas.

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Distinct Responses of Rare and Abundant Microbial Taxa to In Situ Chemical Stabilization of Cadmium-Contaminated Soil

Cited by 73 publications

References 80 publications

Temporal Dynamics of Rare and Abundant Soil Bacterial Taxa from Different Fertilization Regimes Under Various Environmental Disturbances

Temporal Dynamics of Rare and Abundant Soil Bacterial Taxa from Different Fertilization Regimes Under Various Environmental Disturbances

Shifts in Soil Microbial Community Composition, Function, and Co-occurrence Network of Phragmites australis in the Yellow River Delta

Biochar rebuilds the network complexity of rare and abundant microbial taxa in reclaimed soil of mining areas to cooperatively avert cadmium stress

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