Heavy metals multi-tolerant Bradyrhizobium isolated from mercury mining region in Algeria

Salmi, Adouda; Boulila, Farida

doi:10.1016/j.jenvman.2021.112547

Cited by 15 publications

(3 citation statements)

References 56 publications

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“…The second most abundant genus was Bradyrhizobium , which accounted for 5.31%, 7.08%, and 8.31% in CK, OG, and APOG, respectively. Furthermore, the number of Bradyrhizobium increased significantly after inoculating A. pitti , and studies have shown that Bradyrhizobium can promote the phytoremediation of toxic metals [ 57 ]. In addition, Bacillus , Gemmatimonas , Ramlibacter , and Candidatus-Koribacter were the top 10 bacterial genera, with an abundance over 1%.…”

Section: Resultsmentioning

confidence: 99%

Effect of the Combination of Phosphate-Solubilizing Bacteria with Orange Residue-Based Activator on the Phytoremediation of Cadmium by Ryegrass

Peng

Zhao

Yang

et al. 2023

Plants

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Amendments with activators or microorganisms to enhance phytoremediation in toxic-metal-polluted soils have been widely studied. In this research, the production of indoleacetic acid, siderophore, and 1-aminocyclopropane-1-carboxylate (ACC) deaminase by phosphate-solubilizing bacteria was investigated during a pure culture experiment. Pot experiments were performed using Cd-polluted soil with the following treatments: control (CK, only ultrapure water), orange-peel-based activator (OG), and a combination of phosphate-solubilizing bacteria (Acinetobacter pitti) and OG (APOG). Ryegrass plant height and fresh weight, Cd content in ryegrass, total and available Cd soil content, soil enzyme activity, and soil bacterial diversity were determined in this work. The findings showed that the height of ryegrass in OG and APOG increased by 14.78% and 21.23%. In the APOG group, a decreased ratio of Cd was 3.37 times that of CK, and the bioconcentration factor was 1.28 times that of CK. The neutral phosphatase activity of APOG was 1.33 times that of CK and catalase activity was 1.95 times that of CK. The activity of urease was increased by 35.48%. APOG increased the abundance of beneficial bacteria and Proteobacteria was the dominant bacterium, accounting for 57.38% in APOG. Redundancy analysis (RDA) showed that nutrient elements were conducive to the propagation of the dominant bacteria, the secretion of enzymes, and the extraction rate of Cd in the soil. The possible enhancement mechanism of phytoremediation of cadmium by A. pitti combined with OG was that, on the one hand, APOG increased soil nutrient elements and enzyme activities promoted the growth of ryegrass. On the other hand, APOG activated Cd and boosted the movement of Cd from soil to ryegrass. This research offers insight for the combination of phosphate-solubilizing bacteria with an orange-peel-based activator to improve phytoremediation of Cd-contaminated soils and also provides a new way for the resource utilization of fruit residue.

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Section: Resultsmentioning

confidence: 99%

Effect of the Combination of Phosphate-Solubilizing Bacteria with Orange Residue-Based Activator on the Phytoremediation of Cadmium by Ryegrass

Peng

Zhao

Yang

et al. 2023

Plants

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“…Indeed, fostering the growth of the phosphate industry necessitates substantial investments in mining, processing, and transportation infrastructure. These crucial investments not only facilitate the extraction and processing of phosphate resources but also pave the way for the modernization of associated infrastructure and logistics networks (Salmi, et al 2021;Khaustova, 2022;Saadia, et al 2024;). As a result, the ripple effects extend beyond the phosphate sector, positively influencing various other segments of the economy.…”

Section: Importance Of Phosphate For the Countrymentioning

confidence: 99%

Design of a digital model for reserve estimation at the Bled el Hadba phosphate deposit-Birelater, Tebessa

Aichouri,

Djamel,

Chaib

et al. 2024

XIX International May Conference on Strategic Management – IMCSM24 Proceedings - Zbornik Radova

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Enhancing the economic landscape of a nation and elevating societal well-being hinges on the strategic utilization of mineral resources. This study focuses on optimizing phosphate mining in the Bled el Hadba deposit, located in the Bir Elater region of Tebessa. By leveraging geological data and drilling logs, we analyze mineral distribution, structures, and alterations to pinpoint high-yield areas for sustainable exploitation. Additionally, we highlight the transformative impact of data science on mining operations, revolutionizing decisionmaking processes. Advanced analytical techniques, including modeling and machine learning, enable precise predictions of future performance by considering variables such as ore grade and deposit geometry. The integration of these methodologies not only enhances operational efficiency and profitability but also fosters environmental sustainability. Collaboration between data scientists and geoscience experts facilitates rapid analysis and interpretation of exploration data, propelling innovation in the mineral exploration sector. Our modeling efforts yield spatial layouts depicting grade distributions, laying the foundation for informed decision-making in future exploitation endeavors. This interdisciplinary approach underscores the imperative of synergy between diverse fields, underscoring the potential for collective advancement in mineral resource management.

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“…Phytoremediation, especially in-situ enhanced phytoremediation, is widely used for the bioremediation of heavy metal-contaminated soil ( Thakare et al, 2021 ). The growth of plants in contaminated soil can be facilitated by utilizing the biological nitrogen fixation (BNF) ability of legume-rhizobia symbionts ( Hao et al, 2014 ; Yu et al, 2017 ; Wang et al, 2019 ; Salmi & Boulila, 2021 ). For example, soybean ( Glycine max L. Merrill) is applicable in remediating heavy metal-contaminated sites ( Li et al, 2019 ).…”

Section: Introductionmentioning

confidence: 99%

Nickel mine soil is a potential source for soybean plant growth promoting and heavy metal tolerant rhizobia

Han

Cui

Zhou

et al. 2022

PeerJ

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Mine soil is not only barren but also contaminated by some heavy metals. It is unclear whether some rhizobia survived under extreme conditions in the nickel mine soil. Therefore, this study tries to isolate some effective soybean plant growth promoting and heavy metal resistant rhizobia from nickel mine soil, and to analyze their diversity. Soybean plants were used to trap rhizobia from the nickel mine soil. A total of 21 isolates were preliminarily identified as rhizobia, which were clustered into eight groups at 87% similarity level using BOXA1R-PCR fingerprinting technique. Four out of the eight representative isolates formed nodules on soybean roots with effectively symbiotic nitrogen-fixing and plant growth promoting abilities in the soybean pot experiment. Phylogenetic analysis of 16S rRNA, four housekeeping genes (atpD-recA-glnII-rpoB) and nifH genes assigned the symbiotic isolates YN5, YN8 and YN10 into Ensifer xinjiangense and YN11 into Rhizobium radiobacter, respectively. They also showed different tolerance levels to the heavy metals including cadmium, chromium, copper, nickel, and zinc. It was concluded that there were some plant growth promoting and heavy metal resistant rhizobia with the potential to facilitate phytoremediation and alleviate the effects of heavy metals on soybean cultivation in nickel mine soil, indicating a novel evidence for further exploring more functional microbes from the nickel mine soil.

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Heavy metals multi-tolerant Bradyrhizobium isolated from mercury mining region in Algeria

Cited by 15 publications

References 56 publications

Effect of the Combination of Phosphate-Solubilizing Bacteria with Orange Residue-Based Activator on the Phytoremediation of Cadmium by Ryegrass

Effect of the Combination of Phosphate-Solubilizing Bacteria with Orange Residue-Based Activator on the Phytoremediation of Cadmium by Ryegrass

Design of a digital model for reserve estimation at the Bled el Hadba phosphate deposit-Birelater, Tebessa

Nickel mine soil is a potential source for soybean plant growth promoting and heavy metal tolerant rhizobia

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