دورية أكاديمية
Combined biochar and metal-immobilizing bacteria reduces edible tissue metal uptake in vegetables by increasing amorphous Fe oxides and abundance of Fe- and Mn-oxidising Leptothrix species.
| العنوان: | Combined biochar and metal-immobilizing bacteria reduces edible tissue metal uptake in vegetables by increasing amorphous Fe oxides and abundance of Fe- and Mn-oxidising Leptothrix species. |
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| المؤلفون: | Cheng C; Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, PR China., Luo W; Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, PR China., Wang Q; Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, PR China., He L; Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, PR China., Sheng X; Key Laboratory of Agricultural and Environmental Microbiology, Ministry of Agriculture, College of Life Sciences, Nanjing Agricultural University, Nanjing, 210095, Jiangsu, PR China. Electronic address: xfsheng@njau.edu.cn. |
| المصدر: | Ecotoxicology and environmental safety [Ecotoxicol Environ Saf] 2020 Dec 15; Vol. 206, pp. 111189. Date of Electronic Publication: 2020 Aug 25. |
| نوع المنشور: | Journal Article |
| اللغة: | English |
| بيانات الدورية: | Publisher: Elsevier Country of Publication: Netherlands NLM ID: 7805381 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1090-2414 (Electronic) Linking ISSN: 01476513 NLM ISO Abbreviation: Ecotoxicol Environ Saf Subsets: MEDLINE |
| أسماء مطبوعة: | Original Publication: Amsterdam, Netherlands : Elsevier |
| مواضيع طبية MeSH: | Charcoal/*chemistry , Ferric Compounds/*analysis , Leptothrix/*growth & development , Metals, Heavy/*analysis , Serratia liquefaciens/*growth & development , Soil Pollutants/*analysis , Vegetables/*chemistry, Cadmium/analysis ; Lead/analysis ; Leptothrix/genetics ; Leptothrix/metabolism ; Metals, Heavy/metabolism ; Rhizosphere ; Soil/chemistry ; Soil Microbiology ; Soil Pollutants/metabolism ; Vegetables/metabolism |
| مستخلص: | In this study, a highly effective combined biochar and metal-immobilizing bacteria (Bacillus megaterium H3 and Serratia liquefaciens CL-1) (BHC) was characterized for its effects on solution Pb and Cd immobilization and edible tissue biomass and Pb and Cd accumulation in Chinese cabbages and radishes and the mechanisms involved in metal-polluted soils. In the metal-containing solution treated with BHC, the Pb and Cd concentrations decreased, while the pH and cell numbers of strains H3 and CL-1 increased over time. BHC significantly increased the edible tissue dry weight by 17-34% and reduced the edible tissue Pb (0.32-0.46 mg kg -1 ) and Cd (0.16 mg kg -1 ) contents of the vegetables by 24-45%. In the vegetable rhizosphere soils, BHC significantly decreased the acid-soluble Pb (1.81-2.21 mg kg -1 ) and Cd (0.40-0.48 mg kg -1 ) contents by 26-47% and increased the reducible Pb (18.2-18.8 mg kg -1 ) and Cd (0.38-0.39 mg kg -1 ) contents by 10-111%; while BHC also significantly increased the pH, urease activity by 115-169%, amorphous Fe oxides content by 12-19%, and relative abundance of gene copy numbers of Fe- and Mn-oxidising Leptothrix species by 28-73% compared with the controls. These results suggested that BHC decreased edible tissue metal uptake of the vegetables by increasing pH, urease activity, amorphous Fe oxides, and Leptothrix species abundance in polluted soil. These results may provide an effective and eco-friendly way for metal remediation and reducing metal uptake in vegetables by using combined biochar and metal-immobilizing bacteria in polluted soils. (Copyright © 2020 Elsevier Inc. All rights reserved.) |
| فهرسة مساهمة: | Keywords: Biochar; Mechanisms involved in decreased metal accumulation; Metal uptake in vegetables; Metal-contaminated soil; Metal-immobilizing bacteria |
| المشرفين على المادة: | 0 (Ferric Compounds) 0 (Metals, Heavy) 0 (Soil) 0 (Soil Pollutants) 0 (biochar) 00BH33GNGH (Cadmium) 16291-96-6 (Charcoal) 1K09F3G675 (ferric oxide) 2P299V784P (Lead) |
| تواريخ الأحداث: | Date Created: 20200829 Date Completed: 20201201 Latest Revision: 20201201 |
| رمز التحديث: | 20221213 |
| DOI: | 10.1016/j.ecoenv.2020.111189 |
| PMID: | 32858328 |
| قاعدة البيانات: | MEDLINE |
Full Text Finder | تدمد: | 1090-2414 |
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| DOI: | 10.1016/j.ecoenv.2020.111189 |