Effects of environmental factors on soil bacterial community structure and diversity in different contaminated districts of Southwest China mine tailings

Wu, Bei; Luo, Huanyan; Wang, Xitong; Liu, Huakang; He, Peng; Sheng, Mingping; Xu, Fei; Xu, Heng

doi:10.1016/j.scitotenv.2021.149899

Cited by 96 publications

(26 citation statements)

References 73 publications

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“…However, the relative abundance of certain bacterial and fungal taxa differed significantly at different taxonomic levels among the treatments. In this study, Proteobacteria was the most predominant phylum among all bacterial phyla, which was generally consistent with the findings of previous studies [59,60]. The dominance and ubiquity of Proteobacteria in soil may be a result of their rapid growth rates and successful adaptation to environmental stresses [16,47,61].…”

Section: Effects Of Different Invasion Control Methods On Soil Microb...supporting

confidence: 92%

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Jiang

Zhou

et al. 2022

Microorganisms

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Spartina alterniflora invasion has negative effects on the structure and functioning of coastal wetland ecosystems. Therefore, many methods for controlling S. alterniflora invasion have been developed. S. alterniflora control methods can affect plant community, which results in changes in microbial communities and subsequent changes in soil ecological processes. However, the effects of controlling S. alterniflora on soil microbial communities remain poorly understood. We aimed to examine the responses of bacterial and fungal communities to invasion control methods (cutting plus tilling treatment: CT; mechanical rolling treatment: MR). Soil bacterial and fungal community diversity and composition structure were assessed using high-throughput sequencing technology. The findings of the study showed that bacterial diversity and richness in the CT treatment reduced substantially, but fungal diversity and richness did not show any remarkable change. Bacterial and fungal diversity and richness in the MR treatment were not affected considerably. In addition, the two control methods significantly changed the soil microbial community structure. The relative abundance of bacteria negatively associated with nutrient cycling increased considerably in the CT treatment. The considerable increases in the relative abundance of certain bacterial taxa in the MR treatment may promote soil nutrient cycling. Compared with mechanical rolling, soil bacterial community diversity and structure were more sensitive to cutting plus tilling.

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Section: Effects Of Different Invasion Control Methods On Soil Microb...supporting

confidence: 92%

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Jiang

Zhou

et al. 2022

Microorganisms

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“…Previous studies have shown that when the soil is contaminated with chromium, the bacterial community will exhibit obvious partitioning phenomenon, which significantly changes the spatial structure of the bacterial community in the soil (Yu et al, 2021b). This result has been confirmed in other studies (Wang et al, 2021;Wu et al, 2022 andXiao et al, 2022). In this paper, PLS-DA (Figure 3) and Veen analyses (Figure .…”

Section: Effects Of Cr Stress On Rhizosphere Soil Bacterial Community...supporting

confidence: 90%

Effects of Cr stress on bacterial community structure and diversity in rhizosphere soils of Iris pseudacorus

Wei¹,

Zhu²,

Yang³

et al. 2022

Preprint

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Rhizosphere microorganisms play an important role in improving soil microenvironment, which contributes to plant growth under heavy metal stress. However, the effect of chromium (Cr) on plant rhizosphere bacterial community is still unknown. In this paper, sole-cultivated pattern, two-cultivated pattern and three-cultivated pattern, combined with 16S rRNA high-throughput sequencing technology, the effects of Cr stress on bacterial community structure and diversity in rhizosphere soil of Iris Pseudacorus were analyzed. The results showed that under Cr stress, I. Pseudacorus showed good tolerance and enrichment. However, under Cr stress, the Alpha diversity indices (Shannon, Chao and Sobs) of rhizosphere bacterial community decreased by 9.1%, 30.3% and 28.0% on average, respectively. The change of bacterial community was 22.6% due to Cr stress, and the common species of bacterial community decreased by 4.2%. Proteobacteria, Actinobacteria, Acidobacteria, Firmicutes and Gemmatimonadetes accounted for more than 78.2% of the total sequence. With the increase of plant diversity, Bacteroides and Pseudomonas appeared successively, and the abundance of the dominant species increased obviously. Through the symbiotic network diagram, it was found that the synergistic effect between dominant species in two-cultivated pattern was significantly enhanced, and the soil microenvironment was significantly improved. In conclusion, the results of this study will provide a reference for understanding the response of rhizosphere bacterial community to heavy metal Cr and the interaction between wetland plants and rhizosphere bacteria during wetland phytoremediation.

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“…As the important decomposer in soil, bacterial community composition and diversity showed significant influence on soil and ecosystem balance and plant quality ( Wu et al, 2022 ). Studies have shown that bacterial community succession patterns and the structure of soil microbes provide important suggestions for promoting tobacco growth and improving tobacco quality.…”

Section: Introductionmentioning

confidence: 99%

Effect of soil management systems on the rhizosphere bacterial community structure of tobacco: Continuous cropping vs. paddy-upland rotation

et al. 2022

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Rhizosphere bacteria play important role in soil nutrient cycling and plant growth, and their richness and diversity are influenced by soil management systems. However, the specific changes in tobacco rhizosphere bacterial community structure in continuous and tobacco-rice rotation cropping systems remain uninvestigated. In this study, soil properties and the composition of the rhizosphere bacterial community in tobacco monocropping and tobacco-rice rotation cropping systems were analyzed. Moreover, the comparison of rhizosphere bacterial community structure between tobacco continuous and tobacco-rice rotation cropping systems was performed via high-throughput sequencing. The changes in the composition of the rhizosphere bacterial community were investigated at different tobacco growth stages. The results showed that continuous tobacco cropping increased the soil soluble organic carbon (SOC), total nitrogen (TN), and the content of other nutrients (e.g., available phosphorus and available potassium) compared to tobacco-rice rotation cropping. However, monocropping decreased bacterial alpha-diversity and altered the community composition when compared to the rotation cropping system. At the phylum level, the relative abundance of Proteobacteria, Gemmatimonadetes, and Bacteroidetes increased in the continuous cropping soil, while that of Acidobacteria, Firmicutes, and Actinobacteria decreased. At the genera level, the average abundance of the dominant genus Bacillus varied from 12.96% in continuous cropping libraries to 6.33% in the rotation cropping libraries (p < 0.05). Additionally, several other taxa, such as o_Acidobacteriales and Candidatus_Solibacter decreased from 7.63 to 6.62% (p < 0.05) and 4.52 to 2.91% (p < 0.05), respectively. However, the relative abundance of f_Gemmatimonadaceae and c_Subgroup_6 showed an increase of 1.46% (p < 0.05) and 1.63% (p < 0.05) in the tobacco-rice rotation cropping system, respectively. The results of NMDS indicated that the rhizobacteria community structure differed in the two cropping systems. In tobacco, the rhizosphere bacterial community structure showed no significant changes in the prosperous long-term stage and topping stage, but the composition changed significantly in the mature stage.

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Effects of environmental factors on soil bacterial community structure and diversity in different contaminated districts of Southwest China mine tailings

Cited by 96 publications

References 73 publications

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Responses of Soil Microbiota to Different Control Methods of the Spartina alterniflora in the Yellow River Delta

Effects of Cr stress on bacterial community structure and diversity in rhizosphere soils of Iris pseudacorus

Effect of soil management systems on the rhizosphere bacterial community structure of tobacco: Continuous cropping vs. paddy-upland rotation

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