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Yasmin K, Hossain MS, Li WC. Simultaneous immobilization strategy of anionic metalloids and cationic metals in agricultural systems: A review. CHEMOSPHERE 2024; 364:143106. [PMID: 39153530 DOI: 10.1016/j.chemosphere.2024.143106] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/31/2024] [Revised: 07/31/2024] [Accepted: 08/14/2024] [Indexed: 08/19/2024]
Abstract
Concurrent heavy metals remediation in natural environments poses significant challenges due to factors like metal speciation and interactions with soil moisture. This review focuses on strategies for immobilizing both anionic and cationic metals simultaneously in soil-crop systems. Key approaches include water management, biochar utilization, stabilizing agents, nanotechnology, fertilization, and bioremediation. Sprinkler or intermittent irrigation combined with soil amendments/biochar effectively immobilizes As/Cd/Pb simultaneously. This immobilization occurs through continuous adsorption-desorption, oxidation-reduction, and precipitation mechanisms influenced by soil pH, redox reactions, and Fe-oxides. Biochar from sources like wine lees, sewage sludge, spent coffee, and Fe-nanoparticles can immobilize As/Cd/Pb/Cr/Co/Cu/Zn together via precipitation. In addition, biochar from rice, wheat, corn straw, rice husk, sawdust, and wood chips, modified with chemicals or nanoparticles, simultaneously immobilizes As and Cd, containing higher Fe3O4, Fe-oxide, and OH groups. Ligand exchange immobilizes As, while ion exchange immobilizes Cd. Furthermore, combining biochar especially with iron, hydroxyapatite, magnetite, goethite, silicon, graphene, alginate, compost, and microbes-can achieve simultaneous immobilization. Other effective amendments are selenium fertilizer, Ge-nanocomposites, Fe-Si materials, ash, hormone, and sterilization. Notably, combining nano-biochar with microbes and/or fertilizers with Fe-containing higher adsorption sites, metal-binding cores, and maintaining a neutral pH could stimulate simultaneous immobilization. The amendments have a positive impact on soil physio-chemical improvement and crop development. Crops enhance production of growth metabolites, hormones, and xylem tissue thickening, forming a protective barrier by root Fe-plaque containing higher Fe-oxide, restricting upward metal movement. Therefore, a holistic immobilization mechanism reduces plant oxidative damage, improves soil and crop quality, and reduces food contamination.
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Affiliation(s)
- Khadeza Yasmin
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong Special Administrative Region, 999077, China; Department of Soil Science, Sylhet Agricultural University, Sylhet, 3100, Bangladesh.
| | - Md Shahadat Hossain
- Department of Soil Science, Sylhet Agricultural University, Sylhet, 3100, Bangladesh.
| | - Wai Chin Li
- Department of Science and Environmental Studies, The Education University of Hong Kong, Tai Po, Hong Kong Special Administrative Region, 999077, China.
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Zhang J, Xia R, Tao Z. Transcriptome sequencing analysis of gene expression in phosphate-solubilizing bacterium 'N3' and grafted watermelon plants coping with toxicity induced by cadmium. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:50513-50528. [PMID: 39096459 DOI: 10.1007/s11356-024-34601-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 01/16/2024] [Accepted: 07/30/2024] [Indexed: 08/05/2024]
Abstract
Cadmium (Cd) is a harmful metal in soil, and reducing Cd accumulation in plants has become a vital prerequisite for maintaining food safety. Phosphate-solubilizing bacteria (PSB) can not only improve plant growth but also inhibit the transportation of metals to roots. However, data on gene expression in PSB Burkholderia sp. strain 'N3' and grafted watermelon plants dealing with Cd remain to be elucidated. In this study, core genes and metabolic pathways of strain 'N3' and grafted plants were analyzed by Illumina sequencing. Results showed that 356 and 2527 genes were upregulated in 'N3' and grafted watermelon plants, respectively, whereas 514 and 1540 genes were downregulated in 'N3' and grafted watermelon plants, respectively. Gene ontology enrichment analysis showed that signal transduction, inorganic ion transport, cell motility, amino acid transport, and metabolism pathways were marked in 'N3'. However, pathways such as secondary metabolite biosynthesis, oxidation-reduction process, electron transfer activity, and channel regulator activity were marked in the grafted plants. Six genes related to pentose phosphate, glycolysis, and gluconeogenesis metabolism were upregulated in the grafted plants. This study paves the way for developing potential strategies to improve plant growth under Cd toxicity.
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Affiliation(s)
- Jian Zhang
- Institute of Vegetables, Anhui Academy of Agricultural Sciences, Nongke South Road 40, Hefei, 230031, Anhui Province, China.
- Key Laboratory of Horticultural Crop Germplasm Innovation and Utilization (Co-Construction By Ministry and Province), Hefei, 230031, Anhui Province, China.
- Key Laboratory of Genetic Improvement and Ecophysiology of Horticultural Crop, Hefei, 230031, Anhui Province, China.
| | - Rui Xia
- Institute of Vegetables, Anhui Academy of Agricultural Sciences, Nongke South Road 40, Hefei, 230031, Anhui Province, China
- Department of Life Sciences, Imperial College London, Silwood Park Campus, Buckhurst Road, Ascot, Berkshire, SL5 7PY, UK
- Shanxi Research Institute For Clean Energy, Tsinghua University, Beijing Hydecom Technology Co., Ltd, Biejing, China
| | - Zhen Tao
- Institute of Vegetables, Anhui Academy of Agricultural Sciences, Nongke South Road 40, Hefei, 230031, Anhui Province, China
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Zhai Y, Chen Z, Malik K, Wei X, Li C, Chen T. Regulation of mineral elements in Hordeum brevisubulatum by Epichloë bromicola under Cd stress. INTERNATIONAL JOURNAL OF PHYTOREMEDIATION 2024; 26:1253-1268. [PMID: 38305734 DOI: 10.1080/15226514.2024.2307901] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 02/03/2024]
Abstract
In this study, wild barley (Hordeum brevisubulatum) infected (E+) and uninfected (E-) by Epichloë bromicola were used for hydroponic experiments during the seedling stage. Various attributes, such as the effect of fungal endophyte on the growth and development of wild barley, the absorption of cadmium (Cd) and mineral elements (Ca, Mg, Fe, Mn, Cu, Zn), subcellular distribution, and chemical forms were investigated under CdCl2 stress. The results showed that the fungal endophy significantly reduced the Ca content and percentage of plant roots under Cd stress. The Fe and Mn content of roots, the mineral element content of soluble fractions, and the stems in the pectin acid or protein-chelated state increased significantly in response to fungal endophy. Epichloë endophyte helped Cd2+ to enter into plants; and reduced the positive correlation of Ca-Fe and Ca-Mn in roots. In addition, it also decreased the correlation of soluble components Cd-Cu, Cd-Ca, Cd-Mg in roots, and the negative correlation between pectin acid or protein-chelated Cd in stems and mineral elements, to increase the absorbance of host for mineral elements. In conclusion, fungal endophy regulated the concentration and distribution of mineral elements, while storing more Cd2+ to resist the damage caused by Cd stress. The study could provide a ground for revealing the Cd tolerance mechanism of endophytic fungal symbionts.
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Affiliation(s)
- Yurun Zhai
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Zhenjiang Chen
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Kamran Malik
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Xuekai Wei
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Chunjie Li
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
| | - Taixiang Chen
- State Key Laboratory of Herbage Improvement and Grassland Agro-ecosystems, Key Laboratory of Grassland Livestock Industry Innovation (Ministry of Agriculture and Rural Affairs), Engineering Research Center of Grassland Industry (Ministry of Education), Gansu Tech Innovation Centre of Western China Grassland Industry, Center for Grassland Microbiome, College of Pastoral Agriculture Science and Technology, Lanzhou University, Lanzhou, China
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Xie Y, Zhao Y, Li Y, Wang Y, Pei J, Xu H. Cadmium induced changes in rhizosphere microecology to enhance Cd intake by Ligusticum sinense cv. Chuanxiong. JOURNAL OF HAZARDOUS MATERIALS 2024; 468:133851. [PMID: 38394901 DOI: 10.1016/j.jhazmat.2024.133851] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/26/2023] [Revised: 02/12/2024] [Accepted: 02/19/2024] [Indexed: 02/25/2024]
Abstract
As the most famous and widely used traditional Chinese medicine (TCM), Ligusticum sinense cv. Chuanxiong (L. Chuaniong) has been affected by cadmium (Cd) exceeding with high ability of Cd accumulation. There is relatively little research on Cd absorption and storage process in L. Chuanxiong, which is an important reason for the poor remediation efficiency. Hence, this study takes L. Chuanxiong as the point of penetration to explore how L. Chuanxiong affects rhizobacteria through root exudates to alter soil Cd intake, as well as to explore the migration and storage of Cd in its body with 0.10 (T0), 5.00 (T5), 10.00 (T10) mg/kg Cd contaminations. The results showed that the relative abundance of amino acids and phospholipids secreted from L. Chuanxiong root noticeably increased with increasing Cd levels, which directly activated soil Cd or extremely significantly (P < 0.01) recruited bacteria such as Bacillus, Arthrobacter to indirectly increase Cd availability. Under the interaction of root exudates and rhizobacteria, Cd bioavailability increased by 80.00% in rhizosphere soil and Cd accumulation in L. Chuanxiong increased 5.44-6.65 mg/kg. Cd subcellular distribution analysis demonstrated that Cd was mainly stored in the root (10-fold more than in the leaf), whose Cd content was cytoderm>cytoplasm>organelle in tissues. The sequential extraction results found that non-soluble phosphate and protein-chelated Cd dominated (85.00-90.00%) in the cell, while Cd cheated with alcohol soluble protein, amino acid salts, water-soluble organic acid in cell was minimal (5.50%). The phenomenon indicated that L. Chuanxiong fixed Cd in root (the medical part) with low translocation ability. This study can provide theoretical support for the high-quality production of L. Chuanxiong and other root medical plant in heavy metal influenced sites.
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Affiliation(s)
- Yanluo Xie
- College of Pharmacy, Chengdu Medical College, Chengdu 610500, Sichuan, China
| | - Yun Zhao
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China
| | - Yi Li
- College of Pharmacy, Chengdu Medical College, Chengdu 610500, Sichuan, China
| | - Yang Wang
- Pengzhou Agriculture and Rural Bureau, Chengdu 611900, Sichuan, China
| | - Jin Pei
- State Key Laboratory of Southwestern Chinese Medicine Resources, Chengdu University of Traditional Chinese Medicine, Chengdu 611137, Sichuan, China.
| | - Heng Xu
- Key Laboratory of Bio-Resource and Eco-Environment of Ministry of Education, College of Life Sciences, Sichuan University, Chengdu 610065, Sichuan, China.
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Zhang K, Liu F, Zhang H, Duan Y, Luo J, Sun X, Wang M, Ye D, Wang M, Zhu Z, Li D. Trends in phytoremediation of heavy metals-contaminated soils: A Web of science and CiteSpace bibliometric analysis. CHEMOSPHERE 2024; 352:141293. [PMID: 38280645 DOI: 10.1016/j.chemosphere.2024.141293] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/05/2023] [Revised: 01/21/2024] [Accepted: 01/22/2024] [Indexed: 01/29/2024]
Abstract
Heavy metals pollution in soils is an urgent environmental issue worldwide. Phytoremediation is a green and eco-friendly way of remediating heavy metals. However, a systematic overview of this field is limited, and little is known about future development trends. Therefore, we used CiteSpace software to conduct bibliometric and visual analyses of published literature in the field of phytoremediation of heavy metals in soils from the Web of Science core collection and identified research hotspots and development trends in this field. Researchers are paying increased attention to phytoremediation of heavy metals in soils, especially environmental researchers. A total of 121 countries or regions, 3790 institutions, 4091 funded organisations and 15,482 authors have participated in research in this area. China, India, and Pakistan are the largest contributors. There has been extensive cooperation between countries, institutions, and authors worldwide, but there is a lack of cooperation among top authors. 'Calcareous soil', 'Co-contaminated soil' and 'Metal availability' are the most intensively investigated topics. 'EDTA', 'Plant growth-promoting Rhizobacteria', 'Photosynthesis', 'Biochar' and 'Phytoextraction' are research hotspots in this field. In addition, more and more researchers are beginning to pay attention to research on co-contaminated soil, metal availability, chelating agents, and microbial-assisted phytoremediation. In summary, bibliometric, and visual analyses in the field of phytoremediation of heavy metals in soils identifies probable directions for future research and provides a resource through which to better understand this rapidly advancing subject.
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Affiliation(s)
- Kailu Zhang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Fan Liu
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Haixiang Zhang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Yali Duan
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Jialiang Luo
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Xiaoyan Sun
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Meng Wang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Dandan Ye
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Miaomiao Wang
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China
| | - Zhiqiang Zhu
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
| | - Dong Li
- School of Tropical Agriculture and Forestry, Hainan University, Haikou, 570228, China.
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Afridi MS, Kumar A, Javed MA, Dubey A, de Medeiros FHV, Santoyo G. Harnessing root exudates for plant microbiome engineering and stress resistance in plants. Microbiol Res 2024; 279:127564. [PMID: 38071833 DOI: 10.1016/j.micres.2023.127564] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2023] [Revised: 11/02/2023] [Accepted: 11/27/2023] [Indexed: 12/23/2023]
Abstract
A wide range of abiotic and biotic stresses adversely affect plant's growth and production. Under stress, one of the main responses of plants is the modulation of exudates excreted in the rhizosphere, which consequently leads to alterations in the resident microbiota. Thus, the exudates discharged into the rhizospheric environment play a preponderant role in the association and formation of plant-microbe interactions. In this review, we aimed to provide a synthesis of the latest and most pertinent literature on the diverse biochemical and structural compositions of plant root exudates. Also, this work investigates into their multifaceted role in microbial nutrition and intricate signaling processes within the rhizosphere, which includes quorum-sensing molecules. Specifically, it explores the contributions of low molecular weight compounds, such as carbohydrates, phenolics, organic acids, amino acids, and secondary metabolites, as well as the significance of high molecular weight compounds, including proteins and polysaccharides. It also discusses the state-of-the-art omics strategies that unveil the vital role of root exudates in plant-microbiome interactions, including defense against pathogens like nematodes and fungi. We propose multiple challenges and perspectives, including exploiting plant root exudates for host-mediated microbiome engineering. In this discourse, root exudates and their derived interactions with the rhizospheric microbiota should receive greater attention due to their positive influence on plant health and stress mitigation.
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Affiliation(s)
- Muhammad Siddique Afridi
- Department of Plant Pathology, Federal University of Lavras, CP3037, 37200-900 Lavras, MG, Brazil.
| | - Ashwani Kumar
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, MP, India
| | - Muhammad Ammar Javed
- Institute of Industrial Biotechnology, Government College University, Lahore 54000, Pakistan
| | - Anamika Dubey
- Metagenomics and Secretomics Research Laboratory, Department of Botany, Dr. Harisingh Gour University (A Central University), Sagar 470003, MP, India
| | | | - Gustavo Santoyo
- Instituto de Investigaciones Químico Biológicas, Universidad Michoacana de San Nicolás de Hidalgo, 58030 Morelia, Mexico.
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Kama R, Liu Y, Zhao S, Hamani AKM, Song J, Cui B, Aidara M, Liu C, Li Z. Combination of intercropping maize and soybean with root exudate additions reduces metal mobility in soil-plant system under wastewater irrigation. ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY 2023; 266:115549. [PMID: 37813077 DOI: 10.1016/j.ecoenv.2023.115549] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/09/2023] [Revised: 09/28/2023] [Accepted: 10/04/2023] [Indexed: 10/11/2023]
Abstract
The effects of root exudates and irrigation with treated wastewater on heavy metal mobility and soil bacterial composition under intercropping remain poorly understood. We conducted a pot experiment with maize and soybean grown in monocultures or intercultures, irrigated with either groundwater or treated wastewater. In addition, the pre-collected root exudates from hydroponic culture with mono- or inter-cropped maize and soybean were applied to the soil at four levels (0 %, 16 %, 32 % and 64 %). The results showed that application of root exudates increased plant growth and soil nutrient content. The analysis of "Technique for Order of Preference by Similarity to Ideal Solution" for higher plant biomass and lower soil Cd and Pb concentrations indicated that the best performance of soybean under treated wastewater irrigation was recorded under intercropping applied with 64 % of exudates, with a performance score of 0.926 and 0.953 for Cd and Pb, respectively. The second-best performance of maize under treated wastewater irrigation was also observed under intercropping applied with 64 % of exudates. Root exudate application reduced heavy metals migration in the soil-plant system, with a greater impact in intercropping than in monocropping. In addition, certain soil microorganisms were also increased with root exudate application, regardless of irrigation water. This study suggests that appropriate application of root exudates could potentially improve plant growth and soil health, and reduce toxic heavy metal concentrations in soils and plants irrigated with treated wastewater.
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Affiliation(s)
- Rakhwe Kama
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Yuan Liu
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China.
| | - Shouqiang Zhao
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Abdoul Kader Mounkaila Hamani
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Jibin Song
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Bingjian Cui
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Maimouna Aidara
- Laboratory of botanical-biodiversity, faculty of sciences and technology, Cheikh Anta University of Dakar, 50005, Senegal
| | - Chuncheng Liu
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China
| | - Zhongyang Li
- Agricultural Water and Soil Environmental Field Science Observation Research Station, Institute of Farmland Irrigation of CAAS, Xinxiang 453002, China; National Research and Observation Station of Shangqiu Agro-ecology System, Shangqiu 476000, China.
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