Biochar Rebuilds the Network Complexity of Rare and Abundant Microbial Taxa in Reclaimed Soil of Mining Areas to Cooperatively Avert Cadmium Stress

Overview

Journal Front Microbiol

Specialty Microbiology

Date 2022 Aug 19

PMID 35983321

Authors

Yanfeng Zhu

Xiaoping Ge

Liping Wang

Yunnan You

Yanjun Cheng

Jing Ma

Fu Chen

Affiliations

Soon will be listed here.

Abstract

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 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 ., 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 remediation of Cd-contaminated soil in mining areas.

References

Ma J, Zhang Q, Chen F, Zhu Q, Wang Y, Liu G . Remediation of resins-contaminated soil by the combination of electrokinetic and bioremediation processes. Environ Pollut. 2020; 260:114047. DOI: 10.1016/j.envpol.2020.114047. View

Lu Q, Xu Z, Xu X, Liu L, Liang L, Chen Z . Cadmium exposure as a key risk factor for residents in a world large-scale barite mining district, southwestern China. Chemosphere. 2021; 269:129387. DOI: 10.1016/j.chemosphere.2020.129387. View

Rajendran M, Shi L, Wu C, Li W, An W, Liu Z . Effect of sulfur and sulfur-iron modified biochar on cadmium availability and transfer in the soil-rice system. Chemosphere. 2019; 222:314-322. DOI: 10.1016/j.chemosphere.2019.01.149. View

Lee S, Kong M, Harrison P, Hijri M . Conserved Proteins of the RNA Interference System in the Arbuscular Mycorrhizal Fungus Rhizoglomus irregulare Provide New Insight into the Evolutionary History of Glomeromycota. Genome Biol Evol. 2018; 10(1):328-343. PMC: 5786227. DOI: 10.1093/gbe/evy002. View

Chen D, Liu X, Bian R, Cheng K, Zhang X, Zheng J . Effects of biochar on availability and plant uptake of heavy metals - A meta-analysis. J Environ Manage. 2018; 222:76-85. DOI: 10.1016/j.jenvman.2018.05.004. View

Yang J, Yang F, Yang Y, Xing G, Deng C, Shen Y . A proposal of "core enzyme" bioindicator in long-term Pb-Zn ore pollution areas based on topsoil property analysis. Environ Pollut. 2016; 213:760-769. DOI: 10.1016/j.envpol.2016.03.030. View

Qi X, Xiao S, Chen X, Ali I, Gou J, Wang D . Biochar-based microbial agent reduces U and Cd accumulation in vegetables and improves rhizosphere microecology. J Hazard Mater. 2022; 436:129147. DOI: 10.1016/j.jhazmat.2022.129147. View

Fan J, Cai C, Chi H, Reid B, Coulon F, Zhang Y . Remediation of cadmium and lead polluted soil using thiol-modified biochar. J Hazard Mater. 2020; 388:122037. DOI: 10.1016/j.jhazmat.2020.122037. View

Ali A, Shaheen S, Guo D, Li Y, Xiao R, Wahid F . Apricot shell- and apple tree-derived biochar affect the fractionation and bioavailability of Zn and Cd as well as the microbial activity in smelter contaminated soil. Environ Pollut. 2020; 264:114773. DOI: 10.1016/j.envpol.2020.114773. View

10.

Gholami L, Rahimi G, Khademi Jolgeh Nezhad A . Effect of thiourea-modified biochar on adsorption and fractionation of cadmium and lead in contaminated acidic soil. Int J Phytoremediation. 2019; 22(5):468-481. DOI: 10.1080/15226514.2019.1678108. View

11.

Chen D, Wang X, Wang X, Feng K, Su J, Dong J . The mechanism of cadmium sorption by sulphur-modified wheat straw biochar and its application cadmium-contaminated soil. Sci Total Environ. 2020; 714:136550. DOI: 10.1016/j.scitotenv.2020.136550. View

12.

Li R, Tan W, Wang G, Zhao X, Dang Q, Yu H . Nitrogen addition promotes the transformation of heavy metal speciation from bioavailable to organic bound by increasing the turnover time of organic matter: An analysis on soil aggregate level. Environ Pollut. 2019; 255(Pt 1):113170. DOI: 10.1016/j.envpol.2019.113170. View

13.

Zhu Y, Zhong M, Li W, Qiu Y, Wang H, Lv X . Cotton straw biochar and Bacillus compound biofertilizer decreased Cd migration in alkaline soil: Insights from relationship between soil key metabolites and key bacteria. Ecotoxicol Environ Saf. 2022; 232:113293. DOI: 10.1016/j.ecoenv.2022.113293. View

14.

Ahmad M, Rajapaksha A, Lim J, Zhang M, Bolan N, Mohan D . Biochar as a sorbent for contaminant management in soil and water: a review. Chemosphere. 2013; 99:19-33. DOI: 10.1016/j.chemosphere.2013.10.071. View

15.

Elzobair K, Stromberger M, Ippolito J, Lentz R . Contrasting effects of biochar versus manure on soil microbial communities and enzyme activities in an Aridisol. Chemosphere. 2015; 142:145-52. DOI: 10.1016/j.chemosphere.2015.06.044. View

16.

Lu J, Lu H, Li J, Liu J, Feng S, Guan Y . Multi-criteria decision analysis of optimal planting for enhancing phytoremediation of trace heavy metals in mining sites under interval residual contaminant concentrations. Environ Pollut. 2019; 255(Pt 2):113255. DOI: 10.1016/j.envpol.2019.113255. View

17.

Yang X, Liu J, McGrouther K, Huang H, Lu K, Guo X . Effect of biochar on the extractability of heavy metals (Cd, Cu, Pb, and Zn) and enzyme activity in soil. Environ Sci Pollut Res Int. 2015; 23(2):974-84. DOI: 10.1007/s11356-015-4233-0. View

18.

Tang J, Zhang L, Zhang J, Ren L, Zhou Y, Zheng Y . Physicochemical features, metal availability and enzyme activity in heavy metal-polluted soil remediated by biochar and compost. Sci Total Environ. 2019; 701:134751. DOI: 10.1016/j.scitotenv.2019.134751. View

19.

Luo Z, Ma J, Chen F, Li X, Zhang Q, Yang Y . Adaptive Development of Soil Bacterial Communities to Ecological Processes Caused by Mining Activities in the Loess Plateau, China. Microorganisms. 2020; 8(4). PMC: 7232194. DOI: 10.3390/microorganisms8040477. View

20.

Li X, Zhang Q, Ma J, Yang Y, Wang Y, Fu C . Flooding Irrigation Weakens the Molecular Ecological Network Complexity of Soil Microbes During the Process of Dryland-to-Paddy Conversion. Int J Environ Res Public Health. 2020; 17(2). PMC: 7014367. DOI: 10.3390/ijerph17020561. View