Details

Autor(en) / Beteiligte

• Ghani, Muhammad Imran
• Ahanger, Mohammad Abass
• Sial, Tanveer Ali
• Haider, Sajjad
• Siddique, Junaid Ali
• Fan, Ruidong
• Liu, Yanjiang
• Ali, Esmat F.
• Kumar, Manish
• Yang, Xing
• Rinklebe, Jörg
• Chen, Xiaoyulong
• Lee, Sang Soo
• Shaheen, Sabry M.

Titel

Almond shell-derived biochar decreased toxic metals bioavailability and uptake by tomato and enhanced the antioxidant system and microbial community

Ist Teil von

• The Science of the total environment, 2024-06, Vol.929, p.172632-172632, Article 172632

Ort / Verlag

Netherlands: Elsevier B.V

Erscheinungsjahr

2024

Link zum Volltext

Quelle

MEDLINE

Beschreibungen/Notizen

• The effectiveness of almond shell-derived biochar (ASB) in immobilizing soil heavy metals (HMs) and its impact on soil microbial activity and diversity have not been sufficiently studied. Hence, a pot study was carried out to investigate the effectiveness of ASB addition at 2, 4, and 6 % (w/w) on soil biochemical characteristics and the bioavailability of Cd, Cu, Pb, and Zn to tomato (Solanum lycopersicum L.) plants, as compared to the control (contaminated soil without ASB addition). The addition of ASB promoted plant growth (up to two-fold) and restored the damage to the ultrastructure of chloroplast organelles. In addition, ASB mitigated the adverse effects of HMs toxicity by decreasing oxidative damage, regulating the antioxidant system, improving soil physicochemical properties, and enhancing enzymatic activities. At the phylum level, ASB addition enhanced the relative abundance of Actinobacteriota, Acidobacteriota, and Firmicutes while decreasing the relative abundance of Proteobacteria and Bacteroidota. Furthermore, ASB application increased the relative abundance of several fungal taxa (Ascomycota and Mortierellomycota) while reducing the relative abundance of Basidiomycota in the soil. The ASB-induced improvement in soil properties, microbial community, and diversity led to a significant decrease in the DTPA-extractable HMs down to 41.0 %, 51.0 %, 52.0 %, and 35.0 % for Cd, Cu, Pb, and Zn, respectively, as compared to the control. The highest doses of ASB (ASB6) significantly reduced the metals content by 26.0 % for Cd, 78.0 % for Cu, 38.0 % for Pb, and 20.0 % for Zn in the roots, and 72.0 % for Cd, 67.0 % for Cu, 46.0 % for Pb, and 35.0 % for Zn in the shoots, as compared to the control. The structural equation model predicts that soil pH and organic matter are driving factors in reducing the availability and uptake of HMs. ASB could be used as a sustainable trial for remediation of HMs polluted soils and reducing metal content in edible plants. [Display omitted] •Addition of almond shell biochar (ASB) at 2, 4, 6 %(w/w) improved mining soil health.•ASB reduced Cd, Cu, Pb, and Zn phytoavailability in soil.•ASB enhanced soil microbial biomass and enzyme activities except dehydrogenase.•ASB decreased bacteria diversity and increased fungal diversity.•ASB can be used for green remediation of toxic metals polluted soil.