Rhizophagus intraradices combined with Solanum nigrum for the remediation of soil highly contaminated with cadmium

IF 3.9 2区农林科学 Q1 AGRONOMY

Plant and Soil Pub Date : 2025-01-07 DOI:10.1007/s11104-024-07196-3

Xiaohui Wang, Xiaoxu Fan, Gaozhong Pu, Fuqiang Song

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引用次数: 0

Abstract

Background and aims

There is a risk of high concentration cadmium pollution in farmland near heavy industrial activity areas. The combination of arbuscular mycorrhizal fungus (AMF) and hyperaccumulators is a suitable means of remediation. However, the effect of combination on soil biogeochemistry are often overlooked.

Methods

Therefore, we used pot experiments to explore the effects of combined treatments on soil microbial diversity and the driving factors of changes under high Cd pollution.

Result

Results showed that the synergy between Rhizophagus intraradices and Solanum nigrum promoted retention in the root of S. nigrum and diminished the Cd bioavailability in the soil. Furthermore, R. intraradices inoculation successfully rehabilitated the bacterial network adversely affected by Cd contamination, augmenting bacterial α-diversity. R. intraradices effectively mitigates survival pressures on Subgroup_6, 67-14, RB41, and key bacterial genus. Moreover, R. intraradices inoculation led to a significant upswing in soil phosphatase (24.47%) and catalase (34.70%) activities. Additionally, this inoculation engendered heightened nutrient levels and a reduction in soil pH.

Conclusion

Collectively, our study underscores the efficacy of combining R. intraradices with S. nigrum as an strategy for diminishing high Cd pollution in soil while concurrently improving soil health.

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根食菌与黑茄复合修复高镉污染土壤

背景与目的重工业活动区附近的农田存在高浓度镉污染的风险。丛枝菌根真菌（AMF）与超积累菌相结合是一种较好的修复手段。然而，组合对土壤生物地球化学的影响往往被忽视。方法采用盆栽试验方法，探讨高镉污染条件下组合处理对土壤微生物多样性的影响及其变化的驱动因素。结果表明，食根菌与龙葵的协同作用促进了龙葵根内镉的滞留，降低了土壤中镉的生物有效性。此外，接种根瘤菌成功地恢复了受Cd污染影响的细菌网络，增加了细菌α-多样性。大肠杆菌能有效缓解Subgroup_6、67-14、RB41和关键细菌属的生存压力。土壤磷酸酶和过氧化氢酶活性显著提高（分别提高24.47%和34.70%）。综上所述，本研究结果表明，在减少土壤中高镉污染的同时，将黑曲霉与黑曲霉结合使用可以有效地改善土壤健康。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Plant and Soil 农林科学-农艺学

CiteScore

8.20

自引率

8.20%

发文量

543

审稿时长

2.5 months

期刊介绍： Plant and Soil publishes original papers and review articles exploring the interface of plant biology and soil sciences, and that enhance our mechanistic understanding of plant-soil interactions. We focus on the interface of plant biology and soil sciences, and seek those manuscripts with a strong mechanistic component which develop and test hypotheses aimed at understanding underlying mechanisms of plant-soil interactions. Manuscripts can include both fundamental and applied aspects of mineral nutrition, plant water relations, symbiotic and pathogenic plant-microbe interactions, root anatomy and morphology, soil biology, ecology, agrochemistry and agrophysics, as long as they are hypothesis-driven and enhance our mechanistic understanding. Articles including a major molecular or modelling component also fall within the scope of the journal. All contributions appear in the English language, with consistent spelling, using either American or British English.