Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus
Arbuscular mycorrhizal fungi (AMF) can improve plant tolerance to heavy metal stress in terrestrial ecosystems. However, in wetland ecosystems, AMF can improve the tolerance of wetland plants to heavy metals by changing the structure and composition of rhizosphere bacterial communities, which is sti...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2023-03-01
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| Series: | Ecotoxicology and Environmental Safety |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S0147651323001562 |
| _version_ | 1797869939862798336 |
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| author | Zhao Wei Zhu Sixi Yang Xiuqing Xia Guodong Wang Baichun Gu Baojing |
| author_facet | Zhao Wei Zhu Sixi Yang Xiuqing Xia Guodong Wang Baichun Gu Baojing |
| author_sort | Zhao Wei |
| collection | DOAJ |
| description | Arbuscular mycorrhizal fungi (AMF) can improve plant tolerance to heavy metal stress in terrestrial ecosystems. However, in wetland ecosystems, AMF can improve the tolerance of wetland plants to heavy metals by changing the structure and composition of rhizosphere bacterial communities, which is still rarely studied. In this study, we investigated the effects of AMF on the structure and composition of bacterial communities in the rhizosphere of plants under different chromium concentrations. The results showed that Cr(Ⅵ) concentration in Acorus calamus. rhizosphere soil decreased by 12.6 % (5.6–21.7 %) on average after AMF inoculation, At the same time, it promoted the uptake of nutrients by A. calamus and increased soil carbon input. In addition, Cr stress decreased the bacterial community diversity and abundance index by 9.8 % (1.6–18.1 %) and 24.5 % (17.3–27.6 %) on average. On the contrary, the rhizosphere soil bacterial diversity and abundance index increased by 7.3 % (2.2–19.1 %) and 13.9 % (6.0–20.9 %) on average after AMF inoculation. Moreover, compared with the non-inoculated AMF group, the bacterial community structure of A. calamus rhizosphere changed by 24.6 % under Cr stress, The common number of species increased by 6.4 %. In addition, after inoculation of AMF significantly promote the growth of a large number of bacteria related to organic degradation, plant growth, and oxidative stress, increased soil carbon input improved the soil microenvironment. Meanwhile, After AMF inoculation, the Number of edges, Number of Nodes, Average degree, and Average Path length in the symbiotic network of rhizosphere soil bacterial community increased by 34.6 %, 10 %, 44.3 %, and 26.4 %, respectively. Therefore, it offers a possibility that AMF can enhance the tolerance of wetland plants to soil Cr pollution by improving the structure and composition of bacterial communities in the rhizosphere soils of wetland plants, which provide a basis for wetland plants to repair soil Cr pollution. |
| first_indexed | 2024-04-10T00:20:32Z |
| format | Article |
| id | doaj.art-f004a141423f4e20a0272ede9274e8fa |
| institution | Directory Open Access Journal |
| issn | 0147-6513 |
| language | English |
| last_indexed | 2024-04-10T00:20:32Z |
| publishDate | 2023-03-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Ecotoxicology and Environmental Safety |
| spelling | doaj.art-f004a141423f4e20a0272ede9274e8fa2023-03-16T05:01:12ZengElsevierEcotoxicology and Environmental Safety0147-65132023-03-01253114652Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamusZhao Wei0Zhu Sixi1Yang Xiuqing2Xia Guodong3Wang Baichun4Gu Baojing5College of Eco-environment Engineering, Guizhou Minzu University, The Karst Environmental Geological Hazard Prevention of Key Laboratory of State Ethnic Affairs Commission, Guiyang 550025, ChinaCollege of Eco-environment Engineering, Guizhou Minzu University, The Karst Environmental Geological Hazard Prevention of Key Laboratory of State Ethnic Affairs Commission, Guiyang 550025, China; Correspondence to: College of Eco-environment Engineering, Guizhou Minzu University, Guiyang 550025, China.College of Eco-environment Engineering, Guizhou Minzu University, The Karst Environmental Geological Hazard Prevention of Key Laboratory of State Ethnic Affairs Commission, Guiyang 550025, ChinaCollege of Eco-environment Engineering, Guizhou Minzu University, The Karst Environmental Geological Hazard Prevention of Key Laboratory of State Ethnic Affairs Commission, Guiyang 550025, ChinaCollege of Eco-environment Engineering, Guizhou Minzu University, The Karst Environmental Geological Hazard Prevention of Key Laboratory of State Ethnic Affairs Commission, Guiyang 550025, ChinaCollege of Environment and Resources Science, Zhejiang University, Hangzhou 310058, China; Corresponding author.Arbuscular mycorrhizal fungi (AMF) can improve plant tolerance to heavy metal stress in terrestrial ecosystems. However, in wetland ecosystems, AMF can improve the tolerance of wetland plants to heavy metals by changing the structure and composition of rhizosphere bacterial communities, which is still rarely studied. In this study, we investigated the effects of AMF on the structure and composition of bacterial communities in the rhizosphere of plants under different chromium concentrations. The results showed that Cr(Ⅵ) concentration in Acorus calamus. rhizosphere soil decreased by 12.6 % (5.6–21.7 %) on average after AMF inoculation, At the same time, it promoted the uptake of nutrients by A. calamus and increased soil carbon input. In addition, Cr stress decreased the bacterial community diversity and abundance index by 9.8 % (1.6–18.1 %) and 24.5 % (17.3–27.6 %) on average. On the contrary, the rhizosphere soil bacterial diversity and abundance index increased by 7.3 % (2.2–19.1 %) and 13.9 % (6.0–20.9 %) on average after AMF inoculation. Moreover, compared with the non-inoculated AMF group, the bacterial community structure of A. calamus rhizosphere changed by 24.6 % under Cr stress, The common number of species increased by 6.4 %. In addition, after inoculation of AMF significantly promote the growth of a large number of bacteria related to organic degradation, plant growth, and oxidative stress, increased soil carbon input improved the soil microenvironment. Meanwhile, After AMF inoculation, the Number of edges, Number of Nodes, Average degree, and Average Path length in the symbiotic network of rhizosphere soil bacterial community increased by 34.6 %, 10 %, 44.3 %, and 26.4 %, respectively. Therefore, it offers a possibility that AMF can enhance the tolerance of wetland plants to soil Cr pollution by improving the structure and composition of bacterial communities in the rhizosphere soils of wetland plants, which provide a basis for wetland plants to repair soil Cr pollution.http://www.sciencedirect.com/science/article/pii/S0147651323001562Cr stressAMFBacteria diversityAcorus calamus16S rRNA sequencing technologyPhytoremediation |
| spellingShingle | Zhao Wei Zhu Sixi Yang Xiuqing Xia Guodong Wang Baichun Gu Baojing Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus Ecotoxicology and Environmental Safety Cr stress AMF Bacteria diversity Acorus calamus 16S rRNA sequencing technology Phytoremediation |
| title | Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus |
| title_full | Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus |
| title_fullStr | Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus |
| title_full_unstemmed | Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus |
| title_short | Arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve Cr tolerance of Acorus calamus |
| title_sort | arbuscular mycorrhizal fungi alter rhizosphere bacterial community characteristics to improve cr tolerance of acorus calamus |
| topic | Cr stress AMF Bacteria diversity Acorus calamus 16S rRNA sequencing technology Phytoremediation |
| url | http://www.sciencedirect.com/science/article/pii/S0147651323001562 |
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