Effect of Serratia sp. K3 combined with organic materials on cadmium migration in soil-vetiveria zizanioides L. system and bacterial community in contaminated soil

Liu, Huakang; Xie, Yifan; Li, Junjie; Zeng, Guoquan; Li, Hao; Xu, Fei; Su, Feng; Xu, Heng

doi:10.1016/j.chemosphere.2019.125164

Cited by 45 publications

(15 citation statements)

References 49 publications

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“…The soil microbes alter their structure to acclimatize different levels of heavy metal pollution and root environments, which is consistent with the previous studies (Edwards et al, 2015;Li et al, 2017;Liu et al, 2018;Lin et al, 2019;Cao et al, 2020). The shift of microbial composition led to metabolic function variation (Tipayno et al, 2018;Liu et al, 2020), and further caused Pb speciation differences in different treatments. It could explain the difference of acid-soluble Pb concentration between the low and high Pb treatments.…”

Section: Discussionsupporting

confidence: 88%

Indigenous Bacteria Have High Potential for Promoting Salix integra Thunb. Remediation of Lead-Contaminated Soil by Adjusting Soil Properties

et al. 2020

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Salix integra Thunb., a fast-growing woody plant species, has been used for phytoremediation in recent years. However, little knowledge is available regarding indigenous soil microbial communities associated with the S. integra phytoextraction process. In this study, we used an Illumina MiSeq platform to explore the indigenous microbial composition after planting S. integra at different lead (Pb) contamination levels: no Pb, low Pb treatment (Pb 500 mg kg −1 ), and high Pb treatment (Pb 1500 mg kg −1 ). At the same time, the soil properties and their relationship with the bacterial communities were analyzed. The results showed that Pb concentration was highest in the root reaching at 3159.92 ± 138.98 mg kg −1 under the high Pb treatment. Planting S. integra decreased the total Pb concentration by 84.61 and 29.24 mg kg −1 , and increased the acid-soluble Pb proportion by 1.0 and 0.75% in the rhizosphere and bulk soil under the low Pb treatment compared with unplanted soil, respectively. However, it occurred only in the rhizosphere soil under the high Pb treatment. The bacterial community structure and microbial metabolism were related to Pb contamination levels and planting of S. integra, while the bacterial diversity was only affected by Pb contamination levels. The dominant microbial species were similar, but their relative abundance shifted in different treatments. Most of the specific bacterial assemblages whose relative abundances were promoted by root activity and/or Pb contamination were suitable for use in plant-microbial combination remediation, especially many genera coming from Proteobacteria. Redundancy analysis (RDA) showed available nitrogen and pH having a significant effect on the bacteria relating to phytoremediation. The results indicated that indigenous bacteria have great potential in the application of combined S. integra-microbe remediation of lead-contaminated soil by adjusting soil properties.

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Section: Discussionsupporting

confidence: 88%

Indigenous Bacteria Have High Potential for Promoting Salix integra Thunb. Remediation of Lead-Contaminated Soil by Adjusting Soil Properties

et al. 2020

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“…The results indicate the degree of adaptation of bacterial communities is such that it is not possible to predict how they respond to this exposure, and no correlation was found between Cd and alpha-diversity indices ( Stuart et al., 2010 ). For diversity indices (Shannon and Simpson), a positive correlation was shown against redox properties (C.E.C.I, pH), organic substances (OM, C), and minerals (Mn, Ca, P), generally associated with biological and bacterial activities ( Fierer, 2017 ; Mann et al., 2019 ), results according to Liu et al., (2020) and Wu et al., (2017) .…”

Section: Discussionmentioning

confidence: 95%

“…The main phyla in their order of relative abundance are: Proteobacteria, Acidobacteriota, Actinobacteriota, Verrucomicrobiota, Myxococota, Chloroflexi, Placntomycetota, and Bacteroidota have been previously reported in Cd contaminated soils; Proteobacteria and Acidobacteriota could resist metal toxicity depending on their complexation and adsorption capabilities ( Liu et al., 2020 ; Luo et al., 2019 ; Wu et al., 2017 ; Cao et al., 2020 ). Not only can Cd concentration influence soil bacterial diversity and abundance, but also physicochemical conditions such as C, pH, C.E.C.I., P, K and microbial predator richness ( Jones et al., (2009) ; Liu et al., (2020) ), with the possibility of isolating and identifying native bacteria resistant to the metal.…”

Section: Discussionmentioning

confidence: 99%

Theobroma cacao L. agricultural soils with natural low and high cadmium (Cd) in Santander (Colombia), contain a persistent shared bacterial composition shaped by multiple soil variables and bacterial isolates highly resistant to Cd concentrations

Cáceres

Vélez

Junca

et al. 2021

Current Research in Microbial Sciences

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HIGHLIGHTS This study report statistically significant differences in beta-diversity correlated with soil properties, including Cd concentrations. Culture-dependent techniques allowed the isolation of bacterial strains tolerating high Cd concentrations up to 120 mgL −1 for potencial Cd biosorption or intracellular sequestration. The combination of different approaches provides a baseline about the bacterial composition and Cd tolerant strains found in these soils influence for lower Cd accumulation in cocoa crops.

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“…Phytoremediation is an e cient and environmental-friendly method to remove Cd from soil and could be used to remediate Cd pollution soil (Liu et al, 2020).. Under Cd stress, plants are damaged by photosynthesis inhibition and disruption of nutrition absorption (Li et al, 2018), affecting the growth of sensitive plants (Wang et al, 2020a).…”

Section: Introductionmentioning

confidence: 99%

The Growth of Plants and Indigenous Bacterial Community Were Significantly Affected by Cadmium Contamination in Soil-Plant System

Zhang

Zhou

et al. 2021

Preprint

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Concentrations of heavy metals continue to increase in soil environments as a result of both anthropogenic activities and natural processes. Cadmium (Cd) is one of the most toxic heavy metals and poses health risks to both humans and the ecosystem. Herein, we explore the impacts of Cd on a soil-plant system composed of oilseed rape (Brassica napus and Brassica juncea) and bacteria. The two species of oilseed rape displayed a similar variation trend under Cd treatment. Cd accumulation within plant tissues enhanced with increasing concentrations of Cd in soils, and Cd treatment decreased chlorophyll content and suppressed plant growth. Meanwhile, Cd stress induced the changes of antioxidative enzymes activities including elevating SOD and POD activities and reducing CAT activity. The impact of Cd on the bacterial communities of soils was greater than bacterial communities of plants (phyllosphere and endophyte). The α-diversity of bacterial community in soils declined significantly under higher Cd concentration (30 mg/kg). In addition, soil bacterial communities composition and structure were altered in the presence of higher Cd concentration. Meanwhile, the bacterial community of bulk soil was significantly correlated with Cd, while the variation of rhizosphere soil bacterial community was markedly correlated with Cd and other environmental factors of both soils and plants. These results suggested that Cd could affect both the growth of plants and the indigenous bacterial community in soil-plant system, which might further change ecosystem functions in soils.

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Effect of Serratia sp. K3 combined with organic materials on cadmium migration in soil-vetiveria zizanioides L. system and bacterial community in contaminated soil

Cited by 45 publications

References 49 publications

Indigenous Bacteria Have High Potential for Promoting Salix integra Thunb. Remediation of Lead-Contaminated Soil by Adjusting Soil Properties

Indigenous Bacteria Have High Potential for Promoting Salix integra Thunb. Remediation of Lead-Contaminated Soil by Adjusting Soil Properties

Theobroma cacao L. agricultural soils with natural low and high cadmium (Cd) in Santander (Colombia), contain a persistent shared bacterial composition shaped by multiple soil variables and bacterial isolates highly resistant to Cd concentrations

The Growth of Plants and Indigenous Bacterial Community Were Significantly Affected by Cadmium Contamination in Soil-Plant System

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