Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area
Background and aimsLand abandonment and selective farming are two common management methods to restore the soil conditions of low-pollution farmland in mining areas. The soil bacterial community plays an important role in farmland soil restoration; however, few studies have compared the composition...
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| Format: | Article |
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Frontiers Media S.A.
2022-07-01
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| Series: | Frontiers in Microbiology |
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| Online Access: | https://www.frontiersin.org/articles/10.3389/fmicb.2022.953624/full |
| _version_ | 1811288481785184256 |
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| author | Renyan Duan Yihuan Du Zhiwei Chen Yaqi Zhang Wei Hu Li Yang Guohong Xiang Yucai Luo |
| author_facet | Renyan Duan Yihuan Du Zhiwei Chen Yaqi Zhang Wei Hu Li Yang Guohong Xiang Yucai Luo |
| author_sort | Renyan Duan |
| collection | DOAJ |
| description | Background and aimsLand abandonment and selective farming are two common management methods to restore the soil conditions of low-pollution farmland in mining areas. The soil bacterial community plays an important role in farmland soil restoration; however, few studies have compared the composition and diversity of soil bacteria between the abandoned farmlands (AFS) and selective-farming farmlands (FFS). Here, the effects of AFS and FFS on soil properties and bacterial diversity were evaluated in an antimony (Sb) mining area in southern China. This study aimed to identify effective land management methods in terms of positive or negative changes in soil environment and bacterial diversity.Methods16S rRNA high-throughput sequencing was used to compare the diversity and composition of soil bacteria between AFS and FFS in the Xikuangshan (the largest Sb mine in the world).ResultsCompared to AFS, FFS had higher Sb concentration and nutritional properties (e.g., available N, P, and K) and lower Zn concentration (p < 0.05). The bacterial alpha diversity including Chao1 index, Simpson index, Shannon index and Pielou−e index in FFS was higher than AFS (p < 0.05). At the phylum level, FFS had higher relative abundances of Chloroflexi, Acidobacteria, Gemmatimonadetes, and Rokubacteria, and lower relative abundances of Firmicutes, Actinobacteria, and Bacteroidetes. At the genus level, FFS had higher relative abundances of Acidothermus, Haliangium, and Rokubacteriales, and lower relative abundances of Bacillus, Rhodococcus, Sphingomonas, and 67-14. Redundancy analysis indicated that soil heavy metal content and soil fertility were closely correlated with the soil bacterial community. Altogether, selective farming of low-pollution farmland in the mining area can improve soil properties and soil bacterial diversity. |
| first_indexed | 2024-04-13T03:37:14Z |
| format | Article |
| id | doaj.art-2496220cf8144f649d16bca511dd15ea |
| institution | Directory Open Access Journal |
| issn | 1664-302X |
| language | English |
| last_indexed | 2024-04-13T03:37:14Z |
| publishDate | 2022-07-01 |
| publisher | Frontiers Media S.A. |
| record_format | Article |
| series | Frontiers in Microbiology |
| spelling | doaj.art-2496220cf8144f649d16bca511dd15ea2022-12-22T03:04:18ZengFrontiers Media S.A.Frontiers in Microbiology1664-302X2022-07-011310.3389/fmicb.2022.953624953624Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining areaRenyan DuanYihuan DuZhiwei ChenYaqi ZhangWei HuLi YangGuohong XiangYucai LuoBackground and aimsLand abandonment and selective farming are two common management methods to restore the soil conditions of low-pollution farmland in mining areas. The soil bacterial community plays an important role in farmland soil restoration; however, few studies have compared the composition and diversity of soil bacteria between the abandoned farmlands (AFS) and selective-farming farmlands (FFS). Here, the effects of AFS and FFS on soil properties and bacterial diversity were evaluated in an antimony (Sb) mining area in southern China. This study aimed to identify effective land management methods in terms of positive or negative changes in soil environment and bacterial diversity.Methods16S rRNA high-throughput sequencing was used to compare the diversity and composition of soil bacteria between AFS and FFS in the Xikuangshan (the largest Sb mine in the world).ResultsCompared to AFS, FFS had higher Sb concentration and nutritional properties (e.g., available N, P, and K) and lower Zn concentration (p < 0.05). The bacterial alpha diversity including Chao1 index, Simpson index, Shannon index and Pielou−e index in FFS was higher than AFS (p < 0.05). At the phylum level, FFS had higher relative abundances of Chloroflexi, Acidobacteria, Gemmatimonadetes, and Rokubacteria, and lower relative abundances of Firmicutes, Actinobacteria, and Bacteroidetes. At the genus level, FFS had higher relative abundances of Acidothermus, Haliangium, and Rokubacteriales, and lower relative abundances of Bacillus, Rhodococcus, Sphingomonas, and 67-14. Redundancy analysis indicated that soil heavy metal content and soil fertility were closely correlated with the soil bacterial community. Altogether, selective farming of low-pollution farmland in the mining area can improve soil properties and soil bacterial diversity.https://www.frontiersin.org/articles/10.3389/fmicb.2022.953624/fullsoil pollutionagricultural practicesbacteria16S rRNAheavy metal |
| spellingShingle | Renyan Duan Yihuan Du Zhiwei Chen Yaqi Zhang Wei Hu Li Yang Guohong Xiang Yucai Luo Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area Frontiers in Microbiology soil pollution agricultural practices bacteria 16S rRNA heavy metal |
| title | Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area |
| title_full | Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area |
| title_fullStr | Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area |
| title_full_unstemmed | Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area |
| title_short | Diversity and composition of soil bacteria between abandoned and selective-farming farmlands in an antimony mining area |
| title_sort | diversity and composition of soil bacteria between abandoned and selective farming farmlands in an antimony mining area |
| topic | soil pollution agricultural practices bacteria 16S rRNA heavy metal |
| url | https://www.frontiersin.org/articles/10.3389/fmicb.2022.953624/full |
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