Using Bacillus thuringiensis HM-311@hydroxyapatite@biochar beads to remediate Pb and Cd contaminated farmland soil

Zuo, Wenlu; Song, Boyi; Shi, Yuxin; Županič, Anže; Guo, Shuxian; Huang, He; Jiang, Ling; Yu, Yadong

doi:10.1016/j.chemosphere.2022.135797

Cited by 16 publications

(3 citation statements)

References 61 publications

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“…Paddy ecosystems are a unique environment, which is an important part of global change, and also face threats such as salinization [75,76], acidification [77], poor nutrient utilization [78,79], organic pollutants, endocrine disruptors, antibiotics, and microplastic pollution [80][81][82][83][84]. In addition, the physiological and biochemical activities of microorganisms have far-reaching impacts on soil physicochemistry [85].…”

Section: Discussionmentioning

confidence: 99%

Culturomics and Amplicon-Based Metagenomic Insights into the Bacteria of Soils with High Yield of Oryza sativa L. subsp. Japonica

Zhang,

Cao,

Ruan

et al. 2023

Agronomy

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The bacterial community in the paddy field agroecosystem has a pivotal role in the growth adaptability strategy of rice. Here, we studied the bacterial community structure composition of rhizosphere and non-rhizosphere soil samples from super rice in high-yield (920.99 kg/mu) and low-yield (785.30 kg/mu) fields of Japonica Chu 54 using both culturomics and amplicon-based metagenomics approaches. Using amplicon sequencing, a total of 54 phyla and 1167 genera of high-yield field bacteria were detected, while the low-yield field bacteria were distributed in 49 phyla and 865 genera. In addition, compared with low-yielding fields, there were significant differences in the composition and abundance of the same members in high-yielding fields. The node microorganisms in high-yield and low-yield fields were Anaeromyxobacterium and HSB_OF53-F07, respectively. Culturomics analysis unveiled a diverse array of bacterial taxa, encompassing four phyla, 113 genera, and 331 species, including 33 new undescribed lineages. The culturomics and high-throughput sequencing results indicate a widely adapted and highly abundant group of Exiguobacterium, which has broad prospects for application due to its extensive survival characteristics and plant growth-promoting functions. In summary, we analyze the bacterial community structure composition of rhizosphere and non-rhizosphere soil samples from super rice in high-yield and low-yield fields of Japonica Chu 54 using culturomics and amplicon sequencing techniques to better develop positive promotion strategies that adapt to its unique ecological environment.

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Section: Discussionmentioning

confidence: 99%

Culturomics and Amplicon-Based Metagenomic Insights into the Bacteria of Soils with High Yield of Oryza sativa L. subsp. Japonica

Zhang,

Cao,

Ruan

et al. 2023

Agronomy

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“…The relative abundance of beneficial bacteria antagonistic to pathogenic bacteria, such as Planctomyces, Bradyrhizobium, and Burkholderia increased significantly, resulting in a low incidence under pineapple−banana rotation [68]. Bacillus bacterial agents can increase the abundance of the beneficial bacteria Nitrospirae, Variovorax, Rhodanobacter, Nitrosospira, Rhodopseudomonas, and Mesorhizobium [69]. It also showed that the family Pseudomonadaceae is beneficial to the control of root-knot nematodes [70].…”

Section: Beneficial and Harmful Bacteria In Peanut Bulk Soilmentioning

confidence: 99%

Effect of Root-Knot Nematode Disease on Bacterial Community Structure and Diversity in Peanut Fields

Yan

Zhang

et al. 2023

Agronomy

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The root-knot nematode (RKN) disease is a highly destructive soilborne disease that significantly affects peanut yield in Northern China. The composition of the soil microbiome plays a crucial role in plant disease resistance, particularly for soilborne diseases like RKN. However, the relationship between the occurrence of RKN disease and the structure and diversity of bacterial communities in peanut fields remains unclear. To investigate bacterial diversity and the community structure of peanut fields with severe RKN disease, we applied 16S full-length amplicon sequencing based on the third high-throughput sequencing technology. The results indicated no significant differences in soil bacterial α-diversity between resistant and susceptible plants at the same site. However, the Simpson index of resistant plants was higher at the site of peanut-wheat-maize rotation (Ro) than that at the site of peanut continuous cropping (Mo), showing an increase of 21.92%. The dominant phyla identified in the peanut bulk soil included Proteobacteria, Acidobacteria, Actinobacteria, Planctomycetes, Chloroflexi, Firmicutes, and Bacteroidetes. Further analysis using LEfSe (Linear discriminant analysis effect size) revealed that Sulfuricellaceae at the family level was a biomarker in the bulk soil of susceptible peanut compared to resistant peanut. Additionally, Singulisphaera at the genus level was significantly more enriched in the bulk soil of resistant peanut than that of susceptible peanut. Soil properties were found to contribute to the abundance of bacterial operational taxonomic units (OTUs). Available phosphorus (AP), available nitrogen (AN), organic matter (OM), and pH made a positive contribution to the bacterial OTUs, while available potassium (AK) made a negative contribution. The metabolic pathway of novobiocin biosynthesis was only enriched in soil samples from resistant peanut plants. Eleven candidate beneficial bacteria and ten candidate harmful strains were identified in resistant and susceptible peanut, respectively. The identification of these beneficial bacteria provides a resource for potential biocontrol agents that can help improve peanut resistance to RKN disease. Overall, the study demonstrated that severe RKN disease could reduce the abundance and diversity of bacterial communities in peanut bulk soil. The identification of beneficial bacteria associated with resistant peanut offered the possibility for developing biocontrol strategies to enhance peanut resistance to RKN disease.

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“…Several studies have demonstrated that biochar application alleviates HMs toxicity and enhances growth by improving the physiological and biochemical properties of Brassica chinensis L. (Kamran et al, 2019), R.communis (Kiran & Prasad, 2019), and Tobacco (Yu et al, 2021). Previous research has shown that the addition of HM-311-HAP@biochar can relieve Pb stress in crops and enhance the microbial community diversity in the rhizosphere (Zuo et al, 2022). Biochar addition increases the abundance of bacteria by improving the soil nutrients and decreasing the bioavailability of HMs (Wu et al, 2019).…”

mentioning

confidence: 99%

Effect of cornstalk biochar on phytoremediation of Pb‐contaminated soil by females and males ofPopulus deltoides(Salicaceae)

Su,

Peng,

et al. 2023

Physiologia Plantarum

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Soil pollution with lead (Pb) has become a serious global concern, adversely affecting the forest ecosystem. This study was conducted to investigate the effects of corn straw on the remediation efficiency of Pb‐contaminated soil using Populus deltoides. Female and male P. deltoides cuttings were subjected to soil spiked with 900 mg kg−1 Pb and amended with 5% (v/v) corn straw biochar for 90 days. Under Pb stress, the addition of biochar significantly increased the total biomass accumulation by 29% in females and 26% in males. However, without the addition of biochar, the biomass accumulation was significantly reduced by 11% in females and 3% in males under Pb stress. Females showed a higher uptake and accumulation of Pb in roots and leaves, while males accumulated more Pb in roots and stems and exhibited an increased anti‐oxidative capacity. Biochar addition alleviated Pb toxicity in both male and female P. deltoides by immobilizing Pb ion in the soil, reducing Pb uptake and translocation, promoting nutrient uptake, and improving the diversity and stability of the soil bacteria community. Under Pb stress, the relative abundances of metal‐resistance bacteria significantly increased, such as the abundance of Bacteroidetes in females and the abundances of Actinobacteria, Firmicutes, and Planctomycetes in males. In brief, the males under biochar addition exhibited promising potential as candidates for phytoremediation of Pb‐contaminated soil. This study provides new insights into mechanisms underlying sexually differential responses to Pb stress in the presence of biochar amendment.

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Using Bacillus thuringiensis HM-311@hydroxyapatite@biochar beads to remediate Pb and Cd contaminated farmland soil

Cited by 16 publications

References 61 publications

Culturomics and Amplicon-Based Metagenomic Insights into the Bacteria of Soils with High Yield of Oryza sativa L. subsp. Japonica

Culturomics and Amplicon-Based Metagenomic Insights into the Bacteria of Soils with High Yield of Oryza sativa L. subsp. Japonica

Effect of Root-Knot Nematode Disease on Bacterial Community Structure and Diversity in Peanut Fields

Effect of cornstalk biochar on phytoremediation of Pb‐contaminated soil by females and males ofPopulus deltoides(Salicaceae)

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