Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil
Antimony (Sb) is a toxic metalloid impacting on plants, humans and ecosystem stability. Biochar (BC) is a promising amendment to mitigate toxic metals/metalloids. However, the role of BC and bacterial inoculation in mitigating Sb toxicity and bio-accessibility, and reshaping soil bacterial community...
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| Format: | Article |
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KeAi Communications Co., Ltd.
2025-01-01
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| Series: | Environmental Chemistry and Ecotoxicology |
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| Online Access: | http://www.sciencedirect.com/science/article/pii/S2590182625001213 |
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| author | Muhammad Umair Hassan Lorenzo Barbanti Luigimaria Borruso Paola Mattarelli Monica Marianna Modesto Huang Guoqin Duan Renyan Haiying Tang Faizah Amer Altihani |
| author_facet | Muhammad Umair Hassan Lorenzo Barbanti Luigimaria Borruso Paola Mattarelli Monica Marianna Modesto Huang Guoqin Duan Renyan Haiying Tang Faizah Amer Altihani |
| author_sort | Muhammad Umair Hassan |
| collection | DOAJ |
| description | Antimony (Sb) is a toxic metalloid impacting on plants, humans and ecosystem stability. Biochar (BC) is a promising amendment to mitigate toxic metals/metalloids. However, the role of BC and bacterial inoculation in mitigating Sb toxicity and bio-accessibility, and reshaping soil bacterial community has not yet been explored. To investigate this subject, a rice pot experiment was set up involving six treatments: unstressed soil (Ctrl); 1200 mg Sb kg−1 (Sb stress); Sb stress +1 % BC (1 % BC); Sb stress +2.5 % BC (2.5 % BC); Sb stress +1 % BC + Bacillus subtilis bio-inoculum (1 % BC + BI); Sb stress +2.5 % BC + BI (2.5 % BC + BI). The serious impairment in rice growth, physiology and final yield determined by Sb stress was reduced by BC and associated BI. The maximum stress relief was obtained with 2.5 % BC + BI, which increased rice growth and final grain yield (+85 %) by improving several plant traits and soil properties, while decreasing Sb availability. 2.5 % BC + BI curbed Sb concentration in plant organs (−43 % in the whole plant), whereas Sb whole plant content was moderately reduced (−13 %), due to a growth driven Sb uptake effect. Upon 2.5 % BC + BI, soil total Sb concentration and in vitro bio-accessibility were similarly reduced (average, −35 %) due to increases in soil total carbon (+61 %), microbial biomass carbon (+37 %), and enzymatic activities (+72 % in the average of urease and catalase). The addition of BC + BI significantly boosted the relative abundance of soil bacteria involved in reducing Sb toxicity. Our findings highlight BC + BI potential to improve rice production, reduce Sb plant accumulation, soil in-vitro bio-accessibility, and ameliorate soil bacterial community diversity. |
| format | Article |
| id | doaj-art-55dcd1b7528f4699bc81f6d403305817 |
| institution | Kabale University |
| issn | 2590-1826 |
| language | English |
| publishDate | 2025-01-01 |
| publisher | KeAi Communications Co., Ltd. |
| record_format | Article |
| series | Environmental Chemistry and Ecotoxicology |
| spelling | doaj-art-55dcd1b7528f4699bc81f6d4033058172025-08-20T05:07:42ZengKeAi Communications Co., Ltd.Environmental Chemistry and Ecotoxicology2590-18262025-01-0171723173710.1016/j.enceco.2025.08.002Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soilMuhammad Umair Hassan0Lorenzo Barbanti1Luigimaria Borruso2Paola Mattarelli3Monica Marianna Modesto4Huang Guoqin5Duan Renyan6Haiying Tang7Faizah Amer Altihani8School of Life Sciences, Key Laboratory of Jiangxi Province for Biological Invasion and Biosecurity, Jinggangshan University, Ji'an 343009, Jiangxi, China; Research Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, ChinaDepartment of Agricultural and Food Sciences, University of Bologna, Viale Fanin 44, 40127 Bologna, ItalyFree University of Bolzano, Faculty of Agricultural, Environmental and Food Sciences, Piazza Università 5, 39100 Bolzano, ItalyDepartment of Agricultural and Food Sciences, University of Bologna, Viale Fanin 44, 40127 Bologna, ItalyDepartment of Agricultural and Food Sciences, University of Bologna, Viale Fanin 44, 40127 Bologna, ItalyResearch Center on Ecological Sciences, Jiangxi Agricultural University, Nanchang 330045, China; Corresponding author.School of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, ChinaSchool of Agriculture and Biotechnology, Hunan University of Humanities, Science and Technology, Loudi, 417000, ChinaDepartment of Biology, College of Science, King Khalid University, 61413 Abha, Saudi ArabiaAntimony (Sb) is a toxic metalloid impacting on plants, humans and ecosystem stability. Biochar (BC) is a promising amendment to mitigate toxic metals/metalloids. However, the role of BC and bacterial inoculation in mitigating Sb toxicity and bio-accessibility, and reshaping soil bacterial community has not yet been explored. To investigate this subject, a rice pot experiment was set up involving six treatments: unstressed soil (Ctrl); 1200 mg Sb kg−1 (Sb stress); Sb stress +1 % BC (1 % BC); Sb stress +2.5 % BC (2.5 % BC); Sb stress +1 % BC + Bacillus subtilis bio-inoculum (1 % BC + BI); Sb stress +2.5 % BC + BI (2.5 % BC + BI). The serious impairment in rice growth, physiology and final yield determined by Sb stress was reduced by BC and associated BI. The maximum stress relief was obtained with 2.5 % BC + BI, which increased rice growth and final grain yield (+85 %) by improving several plant traits and soil properties, while decreasing Sb availability. 2.5 % BC + BI curbed Sb concentration in plant organs (−43 % in the whole plant), whereas Sb whole plant content was moderately reduced (−13 %), due to a growth driven Sb uptake effect. Upon 2.5 % BC + BI, soil total Sb concentration and in vitro bio-accessibility were similarly reduced (average, −35 %) due to increases in soil total carbon (+61 %), microbial biomass carbon (+37 %), and enzymatic activities (+72 % in the average of urease and catalase). The addition of BC + BI significantly boosted the relative abundance of soil bacteria involved in reducing Sb toxicity. Our findings highlight BC + BI potential to improve rice production, reduce Sb plant accumulation, soil in-vitro bio-accessibility, and ameliorate soil bacterial community diversity.http://www.sciencedirect.com/science/article/pii/S2590182625001213AntimonyAntioxidantsBacterial inoculationMicrobial diversityRice |
| spellingShingle | Muhammad Umair Hassan Lorenzo Barbanti Luigimaria Borruso Paola Mattarelli Monica Marianna Modesto Huang Guoqin Duan Renyan Haiying Tang Faizah Amer Altihani Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil Environmental Chemistry and Ecotoxicology Antimony Antioxidants Bacterial inoculation Microbial diversity Rice |
| title | Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil |
| title_full | Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil |
| title_fullStr | Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil |
| title_full_unstemmed | Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil |
| title_short | Biochar-bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in-vitro bio-accessibility in contaminated soil |
| title_sort | biochar bacteria partnership improves rice growth and soil microbial community diversity while decreasing antimony accumulation and in vitro bio accessibility in contaminated soil |
| topic | Antimony Antioxidants Bacterial inoculation Microbial diversity Rice |
| url | http://www.sciencedirect.com/science/article/pii/S2590182625001213 |
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