Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics
Abstract The prevalence of cadmium (Cd)‐polluted agricultural soils is increasing globally, and arbuscular mycorrhizal fungi (AMF) can reduce the absorption of heavy metals by plants and improve mineral nutrition. However, the immobilization of the rhizosphere on cadmium is often overlooked. In this...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-11-01
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| Series: | iMeta |
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| Online Access: | https://doi.org/10.1002/imt2.133 |
| _version_ | 1827396871850557440 |
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| author | Hong‐Rui Wang Xin‐Ran Du Zhuo‐Yun Zhang Fu‐Juan Feng Jia‐Ming Zhang |
| author_facet | Hong‐Rui Wang Xin‐Ran Du Zhuo‐Yun Zhang Fu‐Juan Feng Jia‐Ming Zhang |
| author_sort | Hong‐Rui Wang |
| collection | DOAJ |
| description | Abstract The prevalence of cadmium (Cd)‐polluted agricultural soils is increasing globally, and arbuscular mycorrhizal fungi (AMF) can reduce the absorption of heavy metals by plants and improve mineral nutrition. However, the immobilization of the rhizosphere on cadmium is often overlooked. In this study, Glomus mosseae and Medicago sativa were established as symbiotes, and Cd migration and environmental properties in the rhizosphere were analyzed. AMF reduced Cd migration, and Cd2+ changed to an organic‐bound state. AMF symbiosis treatment and Cd exposure resulted in microbial community variation, exhibiting a distinct deterministic process (|βNTI| > 2), which ultimately resulted in a core microbiome function of heavy metal resistance and nutrient cycling. AMF increased available N and P, extracellular enzyme activity (LaC, LiP, and CAT), organic matter content (TOC, EOC, and GRSP), and Eh of the rhizosphere soil, significantly correlating with decreased Cd migration (p < 0.05). Furthermore, AMF significantly affected root metabolism by upregulating 739 metabolites, with flavonoids being the main factor causing microbiome variation. The structural equation model and variance partial analysis revealed that the superposition of the root metabolites, microbial, and soil exhibited the maximum explanation rate for Cd migration reduction (42.4%), and the microbial model had the highest single explanation rate (15.5%). Thus, the AMF in the rhizosphere microenvironment can regulate metabolite–soil–microbial interactions, reducing Cd migration. In summary, the study provides a new scientific explanation for how AMF improves plant Cd tolerance and offers a sustainable solution that could benefit both the environment and human health. |
| first_indexed | 2024-03-08T18:58:00Z |
| format | Article |
| id | doaj.art-89d93b2dc39e47d49b0c16ac6be1917e |
| institution | Directory Open Access Journal |
| issn | 2770-596X |
| language | English |
| last_indexed | 2024-03-08T18:58:00Z |
| publishDate | 2023-11-01 |
| publisher | Wiley |
| record_format | Article |
| series | iMeta |
| spelling | doaj.art-89d93b2dc39e47d49b0c16ac6be1917e2023-12-28T09:50:56ZengWileyiMeta2770-596X2023-11-0124n/an/a10.1002/imt2.133Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamicsHong‐Rui Wang0Xin‐Ran Du1Zhuo‐Yun Zhang2Fu‐Juan Feng3Jia‐Ming Zhang4College of Life Science Northeast Forestry University Harbin ChinaCollege of Life Science Northeast Forestry University Harbin ChinaCollege of Life Science Northeast Forestry University Harbin ChinaCollege of Life Science Northeast Forestry University Harbin ChinaCollege of Life Science Northeast Forestry University Harbin ChinaAbstract The prevalence of cadmium (Cd)‐polluted agricultural soils is increasing globally, and arbuscular mycorrhizal fungi (AMF) can reduce the absorption of heavy metals by plants and improve mineral nutrition. However, the immobilization of the rhizosphere on cadmium is often overlooked. In this study, Glomus mosseae and Medicago sativa were established as symbiotes, and Cd migration and environmental properties in the rhizosphere were analyzed. AMF reduced Cd migration, and Cd2+ changed to an organic‐bound state. AMF symbiosis treatment and Cd exposure resulted in microbial community variation, exhibiting a distinct deterministic process (|βNTI| > 2), which ultimately resulted in a core microbiome function of heavy metal resistance and nutrient cycling. AMF increased available N and P, extracellular enzyme activity (LaC, LiP, and CAT), organic matter content (TOC, EOC, and GRSP), and Eh of the rhizosphere soil, significantly correlating with decreased Cd migration (p < 0.05). Furthermore, AMF significantly affected root metabolism by upregulating 739 metabolites, with flavonoids being the main factor causing microbiome variation. The structural equation model and variance partial analysis revealed that the superposition of the root metabolites, microbial, and soil exhibited the maximum explanation rate for Cd migration reduction (42.4%), and the microbial model had the highest single explanation rate (15.5%). Thus, the AMF in the rhizosphere microenvironment can regulate metabolite–soil–microbial interactions, reducing Cd migration. In summary, the study provides a new scientific explanation for how AMF improves plant Cd tolerance and offers a sustainable solution that could benefit both the environment and human health.https://doi.org/10.1002/imt2.133arbuscular mycorrhizal fungicadmiummicrobiome reassemblyrhizospheresoil microbial interaction |
| spellingShingle | Hong‐Rui Wang Xin‐Ran Du Zhuo‐Yun Zhang Fu‐Juan Feng Jia‐Ming Zhang Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics iMeta arbuscular mycorrhizal fungi cadmium microbiome reassembly rhizosphere soil microbial interaction |
| title | Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics |
| title_full | Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics |
| title_fullStr | Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics |
| title_full_unstemmed | Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics |
| title_short | Rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics |
| title_sort | rhizosphere interface microbiome reassembly by arbuscular mycorrhizal fungi weakens cadmium migration dynamics |
| topic | arbuscular mycorrhizal fungi cadmium microbiome reassembly rhizosphere soil microbial interaction |
| url | https://doi.org/10.1002/imt2.133 |
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