Article (Scientific journals)
Arbuscular mycorrhizal fungi bioaugmentation improves soil health in long-term biosolids-amended farmland
Sun, Tao; Delaplace, Pierre; Li, Guihua et al.
2026In Applied Soil Ecology, 217, p. 106615
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Keywords :
Copper; Soil health index; Soil multifunctionality; Sustainable agriculture; Zinc; Ecology; Agricultural and Biological Sciences (miscellaneous); Soil Science
Abstract :
[en] Soil fertility and nutrient cycling can be enhanced with application of biosolids; however, it can also pose risks associated with introduction of heavy metals. The balance between these beneficial and adverse effects in influencing soil health and multifunctionality remains unclear. Further, eco-friendly strategies to alleviate heavy metal accumulation in biosolids-applied soils are undetermined. With this objective, we sampled soil from an agricultural field that had been applied with biosolids for 16 years at rates of 0 t ha−1 (Control), 4.5 t ha−1 (SW1), 9 t ha−1 (SW2), 18 t ha−1 (SW3), and 36 t ha−1 (SW4). Bacterial, fungal and arbuscular mycorrhizal (AM) fungal communities were determined, and soil health index (SHI) and multifunctionality (SMF) quantified. Field experiment showed that optimal biosolids application significantly increased SHI and SMF by 3–20 % and 3–75 %, respectively, compared to the Control treatment. Bacterial and AM fungal keystone taxa abundances were positively correlated to SHI and SMF. Additionally, to corroborate these results, pot experiments were conducted to test the effect of AM fungal inoculation on soil microbial diversity and multifunctionality, and its mitigatory effect on heavy metal accumulation. AM fungal inoculation significantly increased SMF by 42–61 %, and reduced Cu and Zn contents by 7–10 % and 4–6 %, respectively. Metagenomic analyses showed that AM fungal inoculation significantly increased soil carbon, nitrogen, phosphorus and sulfur gene abundance, positively correlated to SMF. Overall, the findings underscore the benefits of judicious biosolids application combined with AM fungal bioaugmentation as a viable strategy for mitigation of heavy metal accumulation for sustainable agriculture.
Disciplines :
Agriculture & agronomy
Author, co-author :
Sun, Tao;  State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China ; Gembloux Agro Bio Tech, University of Liège, Belgium
Delaplace, Pierre  ;  Université de Liège - ULiège > Département GxABT > Plant Sciences
Li, Guihua;  State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
James, Anina;  State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Pan, Junting;  State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China
Zhang, Jianfeng;  State Key Laboratory of Efficient Utilization of Arable Land in China, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, China ; Institute of Special Animal and Plant Sciences, Chinese Academy of Agricultural Sciences, Changchun, China
Language :
English
Title :
Arbuscular mycorrhizal fungi bioaugmentation improves soil health in long-term biosolids-amended farmland
Publication date :
2026
Journal title :
Applied Soil Ecology
ISSN :
0929-1393
Publisher :
Elsevier B.V.
Volume :
217
Pages :
106615
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
CSC - China Scholarship Council
NSCF - National Natural Science Foundation of China
Funding text :
This study was supported by the National Natural Science Foundation of China ( 22176215 ), the Shandong Provincial Key Research and Development Program ( 2023TZXD087 ), and the China Scholarship Council (No. 202393250064 ).
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