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Integrating Broussonetia papyrifera and Two Bacillus Species to Repair Soil Antimony Pollutions

Frontiers in microbiology, 2022-05, Vol.13, p.871581 [Peer Reviewed Journal]

Copyright © 2022 Huang, Fan, Zhao, Jin, Yang, Zhao and Xu. ;Copyright © 2022 Huang, Fan, Zhao, Jin, Yang, Zhao and Xu. 2022 Huang, Fan, Zhao, Jin, Yang, Zhao and Xu ;ISSN: 1664-302X ;EISSN: 1664-302X ;DOI: 10.3389/fmicb.2022.871581 ;PMID: 35592006

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  • Title:
    Integrating Broussonetia papyrifera and Two Bacillus Species to Repair Soil Antimony Pollutions
  • Author: Huang, Huimin ; Fan, Li ; Zhao, Yunlin ; Jin, Qi ; Yang, Guiyan ; Zhao, Di ; Xu, Zhenggang
  • Subjects: antimony stress ; Bacillus cereus ; Broussonetia papyrifera ; Microbiology ; physiological response ; phytoremediation
  • Is Part Of: Frontiers in microbiology, 2022-05, Vol.13, p.871581
  • Description: Heavy metal resistant bacteria play an important role in the metal biogeochemical cycle in soil, but the benefits of microbial oxidation for plants and soil have not been well-documented. The purpose of this study was to explore the contribution of two spp. to alleviate the antimony (Sb) toxicity in plants, and, then, to propose a bioremediation method for Sb contaminated soil, which is characterized by environmental protection, high efficiency, and low cost. This study explored the effects of HM5 and HM7 inoculation on and soil were evaluated under controlled Sb stressed conditions (0 and 100 mmol/L, antimony slag) through a pot experiment. The results show that the total root length, root volume, tips, forks, crossings, and root activities of with inoculation are higher than those of the control group, and the strains promote the plant absorption of Sb from the soil environment. Especially in the antimony slag treatment group, HM5 had the most significant effect on root promotion and promoting the absorption of Sb by . Compared with the control group, the total root length, root volume, tips, forks, crossings, and root activities increased by 64.54, 70.06, 70.04, 78.15, 97.73, and 12.95%, respectively. The absorption of Sb by root, stem, and leaf increased by 265.12, 250.00, and 211.54%, compared with the control group, respectively. Besides, both HM5 and HM7 reduce the content of malondialdehyde, proline, and soluble sugars in plant leaves, keeping the antioxidant enzyme activity of at a low level, and alleviating lipid peroxidation. Principal component analysis (PCA) shows that both HM5 and HM7 are beneficial to the maintenance of plant root functions and the improvement of the soil environment, thereby alleviating the toxicity of Sb. Therefore, HM5 and HM7 in phytoremediation with is a promising inoculant used for bacteria-assisted phytoremediation on Sb contaminated sites.
  • Publisher: Switzerland: Frontiers Media S.A
  • Language: English
  • Identifier: ISSN: 1664-302X
    EISSN: 1664-302X
    DOI: 10.3389/fmicb.2022.871581
    PMID: 35592006
  • Source: Geneva Foundation Free Medical Journals at publisher websites
    Directory of Open Access Journals
    PubMed Central（OA）
    ROAD: Directory of Open Access Scholarly Resources
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