1
|
Zhu Y, Ke M, Yu Z, Lei C, Liu M, Yang Y, Lu T, Zhou NY, Peijnenburg WJGM, Tang T, Qian H. Combined effects of azoxystrobin and oxytetracycline on rhizosphere microbiota of Arabidopsis thaliana. ENVIRONMENT INTERNATIONAL 2024; 186:108655. [PMID: 38626494 DOI: 10.1016/j.envint.2024.108655] [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: 02/02/2024] [Revised: 04/10/2024] [Accepted: 04/10/2024] [Indexed: 04/18/2024]
Abstract
The rhizosphere is one of the key determinants of plant health and productivity. Mixtures of pesticides are commonly used in intensified agriculture. However, the combined mechanisms underlying their impacts on soil microbiota remain unknown. The present study revealed that the rhizosphere microbiota was more sensitive to azoxystrobin and oxytetracycline, two commonly used pesticides, than was the microbiota present in bulk soil. Moreover, the rhizosphere microbiota enhanced network complexity and stability and increased carbohydrate metabolism and xenobiotic biodegradation as well as the expression of metabolic genes involved in defence against pesticide stress. Co-exposure to azoxystrobin and oxytetracycline had antagonistic effects on Arabidopsis thaliana growth and soil microbial variation by recruiting organic-degrading bacteria and regulating ABC transporters to reduce pesticide uptake. Our study explored the composition and function of soil microorganisms through amplicon sequencing and metagenomic approaches, providing comprehensive insights into the synergistic effect of plants and rhizosphere microbiota on pesticides and contributing to our understanding of the ecological risks associated with pesticide use.
Collapse
Affiliation(s)
- Yuke Zhu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Mingjing Ke
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Zhitao Yu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Chaotang Lei
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Meng Liu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Yaohui Yang
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Tao Lu
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China
| | - Ning-Yi Zhou
- State Key Laboratory of Microbial Metabolism, and School of Life Science & Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, PR China
| | - W J G M Peijnenburg
- Institute of Environmental Sciences (CML), Leiden University, Leiden 2300, RA, the Netherlands; National Institute of Public Health and the Environment (RIVM), Center for Safety of Substances and Products, P.O. Box 1, Bilthoven, the Netherlands
| | - Tao Tang
- State Key Laboratory for Managing Biotic and Chemical Threats to the Quality and Safety of Agro-Products, Key Laboratory for Pesticide Residue Detection of Ministry of Agriculture and Rural Affairs, Institute of Agro-Product Safety and Nutrition, Zhejiang Academy of Agricultural Sciences, Hangzhou 310021, PR China.
| | - Haifeng Qian
- College of Environment, Zhejiang University of Technology, Hangzhou 310032, PR China.
| |
Collapse
|
2
|
Vermeire ML, Thiour-Mauprivez C, De Clerck C. Agroecological transition: towards a better understanding of the impact of ecology-based farming practices on soil microbial ecotoxicology. FEMS Microbiol Ecol 2024; 100:fiae031. [PMID: 38479782 PMCID: PMC10994205 DOI: 10.1093/femsec/fiae031] [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: 05/30/2023] [Revised: 12/22/2023] [Accepted: 03/12/2024] [Indexed: 04/05/2024] Open
Abstract
Alternative farming systems have developed since the beginning of industrial agriculture. Organic, biodynamic, conservation farming, agroecology and permaculture, all share a grounding in ecological concepts and a belief that farmers should work with nature rather than damage it. As ecology-based agricultures rely greatly on soil organisms to perform the functions necessary for agricultural production, it is thus important to evaluate the performance of these systems through the lens of soil organisms, especially soil microbes. They provide numerous services to plants, including growth promotion, nutrient supply, tolerance to environmental stresses and protection against pathogens. An overwhelming majority of studies confirm that ecology-based agricultures are beneficial for soil microorganisms. However, three practices were identified as posing potential ecotoxicological risks: the recycling of organic waste products, plastic mulching, and pest and disease management with biopesticides. The first two because they can be a source of contaminants; the third because of potential impacts on non-target microorganisms. Consequently, developing strategies to allow a safe recycling of the increasingly growing organic matter stocks produced in cities and factories, and the assessment of the ecotoxicological impact of biopesticides on non-target soil microorganisms, represent two challenges that ecology-based agricultural systems will have to face in the future.
Collapse
Affiliation(s)
- Marie-Liesse Vermeire
- CIRAD, UPR Recyclage et Risque, Dakar 18524, Sénégal
- Recyclage et Risque, Univ Montpellier, CIRAD, Montpellier 34398, France
| | - Clémence Thiour-Mauprivez
- INRAE, Institut Agro, Université de Bourgogne, Université de Bourgogne Franche-Comté, Agroécologie, Dijon 21000, France
| | - Caroline De Clerck
- AgricultureIsLife, Gembloux Agro-Bio Tech, Liege University, 2 Passage des Déportés, 5030 Gembloux, Belgium
| |
Collapse
|
3
|
Wang Y, Zhang F, Liao X, Yang X, Zhang G, Zhang L, Wei C, Shi P, Wen J, Ju X, Xu C, Liu Y, Lan Y. Disturbance mitigation of thiencarbazone-methyl·isoxaflutole on bacterial communities through nitrification inhibitor and attapulgite. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2024; 340:122840. [PMID: 37926417 DOI: 10.1016/j.envpol.2023.122840] [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: 07/12/2023] [Revised: 10/06/2023] [Accepted: 10/29/2023] [Indexed: 11/07/2023]
Abstract
There is a knowledge gap in the interaction between the effects of herbicide thiencarbazone-methyl·isoxaflutole on soil microflora and environmental parameters, which leads to a lack of measures in mitigating damage to bacterial communities from the herbicide use. The impacts of thiencarbazone-methyl·isoxaflutole and soil parameters on the diversity, structure and functions of soil bacterial communities were clarified, and the effects and potential mitigation mechanisms of nitrapyrin and modified attapulgite with bacterial function intervention on bacterial communities were explored through incubation and field experiments. The results showed that as thiencarbazone-methyl·isoxaflutole application increased, the stress on soil bacterial community structure and diversity also increased. The relative abundance of bacteria including Aridibacter and GP7 and functional annotations including "nitrate_reduction" were significantly negatively correlated with thiencarbazone-methyl·isoxaflutole residues in soils. The remarkable toxic effects on the Adhaeribacter bacteria were detected at the recommended dose of thiencarbazone-methyl·isoxaflutole application. The residue of isoxaflutole (one of the effective ingredients of thiencarbazone-methyl·isoxaflutole) directly and more strongly affected the diversity of soil bacterial communities than thiencarbazone-methyl. Increasing soil pH was recognised as an important factor in improving the diversity and structure of soil microflora based on the results of the Mantel test and canonical correspondence analysis. Supplemental use of nitrapyrin or modified attapulgite was found to increase soil pH, and further improve the expression of "manganese oxidation" function annotation. This contributed to the increased bacterial diversity (Shannon index). Therefore, the disturbance of soil microflora caused by thiencarbazone-methyl·isoxaflutole application can be mitigated by the use of nitrapyrin and modified attapulgite through raising soil pH.
Collapse
Affiliation(s)
- Yonglu Wang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China; University of Chinese Academy of Sciences, Beijing, 100049, China
| | - Fengsong Zhang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China.
| | - Xiaoyong Liao
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Xiao Yang
- Key Laboratory of Land Surface Pattern and Simulation, Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing, 100101, China
| | - Guixiang Zhang
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Liyun Zhang
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, 102206, China
| | - Chaojun Wei
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, 102206, China
| | - Pengge Shi
- Key Laboratory for Northern Urban Agriculture of Ministry of Agriculture and Rural Affairs, Beijing University of Agriculture, Beijing, 102206, China
| | - Jiongxin Wen
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Xiaorong Ju
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Can Xu
- School of Environment and Resources, Taiyuan University of Science and Technology, Taiyuan, 030024, Shanxi Province, China
| | - Yang Liu
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161006, Heilongjiang Province, China
| | - Ying Lan
- Qiqihar Branch of Heilongjiang Academy of Agricultural Sciences, Qiqihar, 161006, Heilongjiang Province, China
| |
Collapse
|
4
|
Ma Q, Li Q, Wang J, Parales RE, Li L, Ruan Z. Exposure to three herbicide mixtures influenced maize root-associated microbial community structure, function and the network complexity. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 336:122393. [PMID: 37595734 DOI: 10.1016/j.envpol.2023.122393] [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: 05/10/2023] [Revised: 08/13/2023] [Accepted: 08/14/2023] [Indexed: 08/20/2023]
Abstract
Herbicide mixtures are a new and effective agricultural strategy for managing suppress weed resistance and have been widely used in controlling weeding growth in maize fields. However, the potential ecotoxicological impact of these mixtures on the microbial community structure and function within various root-associated niches, remains inadequately understood. Here, the effects of nicosulfuron, mesotrione and atrazine on soil enzyme activity and microbial community structure and function were investigated when applied alone and in combination. The findings indicated that herbicide mixtures exhibit a prolonged half-life compared to single herbicides. Ecological niches are the major factor influencing the structure and functions of the microbial community, with the rhizosphere exhibiting a more intensive response to herbicide stress. Herbicides significantly inhibited the activities of soil functional enzymes, including dehydrogenase, urease and sucrose in the short-term. Single herbicide did not drastically influence the alpha or beta diversity of the soil bacterial community, but herbicide mixtures significantly increased the richness of the fungal community. Meanwhile, the key functional microbial populations, such as Pseudomonas and Enterobacteriaceae, were significantly altered by herbicide stress. Both individual and combined use of the three herbicides reduced the complexity and stability of the bacterial network but increased the interspecific cooperations of fungal community in the rhizosphere. Moreover, by quantification of residual herbicide concentrations in the soil, we showed that the degradation period of the herbicide mixture was longer than that of single herbicides. Herbicide mixtures increased the contents of NO3--N and NH4+-N in the soil in the short-term. Overall, our study provided a comprehensive insight into the response of maize root-associated microbial communities to herbicide mixtures and facilitated the assessment of the ecological risks posed by herbicide mixtures to the agricultural environment from an agricultural sustainability perspective.
Collapse
Affiliation(s)
- Qingyun Ma
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, PR China; State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Qingqing Li
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China
| | - Jie Wang
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China; College of Life Science, Xinjiang Normal University, Urumqi, 830046, PR China
| | - Rebecca E Parales
- Department of Microbiology and Molecular Genetics, College of Biological Sciences, University of California, Davis, CA, USA
| | - Lin Li
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, 430070, PR China
| | - Zhiyong Ruan
- State Key Laboratory of Efficient Utilization of Arid and Semi-arid Arable Land in Northern China, CAAS-CIAT Joint Laboratory in Advanced Technologies for Sustainable Agriculture, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing, 100081, PR China.
| |
Collapse
|
5
|
Wang Y, Men J, Zheng T, Ma Y, Li W, Cernava T, Bai L, Jin D. Impact of pyroxasulfone on sugarcane rhizosphere microbiome and functioning during field degradation. JOURNAL OF HAZARDOUS MATERIALS 2023; 455:131608. [PMID: 37178534 DOI: 10.1016/j.jhazmat.2023.131608] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/22/2023] [Revised: 05/07/2023] [Accepted: 05/08/2023] [Indexed: 05/15/2023]
Abstract
Pyroxasulfone (PYR) is a widely used herbicide, but its effects on non-target organisms, particularly microorganisms, are largely unknown. Herein, we investigated the effects of various doses of PYR on the sugarcane rhizosphere microbiome by using amplicon sequencing of rRNA genes and quantitative PCR techniques. Correlation analyses indicated that several bacterial phyla (Verrucomicrobia and Rhodothermaeota) and genera (Streptomyces and Ignavibacteria) strongly responded to PYR application. Additionally, we found that both bacterial diversity and composition were significantly altered after 30 days, indicating a prolonged effect of the herbicide. Moreover, co-occurrence analyses of the bacterial community showed that the network complexity was significantly decreased by PYR at day 45. Furthermore, FAPROTAX analysis suggested that some functions with implications for carbon cycling groups were significantly altered after 30 days. Overall, we provide the first indications that PYR may not pose a significant risk for altering microbial communities in the short term (less than 30 days). However, its potential negative effects on bacterial communities in the middle and late stages of degradation deserve further attention. To our knowledge, this is the first study to provide insight into the effects of PYR on the rhizosphere microbiome, providing an extended basis for future risk assessments.
Collapse
Affiliation(s)
- Yanhui Wang
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Jianan Men
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China; Hebei Key Laboratory of Plant Physiology and Molecular Pathology, Hebei Agricultural University, Baoding 071000, China
| | - Tao Zheng
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Yonglin Ma
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Weisheng Li
- Key Laboratory of Green Prevention and Control on Fruits and Vegetables in South China Ministry of Agriculture and Rural Affairs, Guangxi Key Laboratory of Biology for Crop Diseases and Insect Pests, Plant Protection Research Institute, Guangxi Academy of Agricultural Sciences, Nanning 530007, China
| | - Tomislav Cernava
- Institute of Environmental Biotechnology, Graz University of Technology, Petersgasse 12, Graz 8010, Austria; School of Biological Sciences, Faculty of Environmental and Life Sciences, University of Southampton, Southampton SO17 1BJ, United Kingdom
| | - Lianyang Bai
- Hunan Provincial Key Laboratory for Biology and Control of Weed, Hunan Academy of Agricultural Sciences, Changsha 410125, China.
| | - Decai Jin
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085, China.
| |
Collapse
|
6
|
Lupwayi NZ, Blackshaw RE, Geddes CM, Dunn R, Petri RM. Multi-year and multi-site effects of recurrent glyphosate applications on the wheat rhizosphere microbiome. ENVIRONMENTAL RESEARCH 2022; 215:114363. [PMID: 36174759 DOI: 10.1016/j.envres.2022.114363] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 07/19/2022] [Revised: 09/12/2022] [Accepted: 09/14/2022] [Indexed: 06/16/2023]
Abstract
Glyphosate (N-(phosphonomethyl)glycine) is broad-spectrum herbicide that is extensively used worldwide, but its effects on the soil microbiome are inconsistent. To provide a sound scientific basis for herbicide re-review and registration decisions, we conducted a four-year (2013-2016) study in which we consecutively applied glyphosate to a wheat (Triticum aestivum L.)-field pea (Pisum sativum L.)-canola (Brassica napus L.)-wheat crop rotation at five sites in the Canadian prairies. The glyphosate rates were 0, 1, 2, 4 and 8 kg ae ha-1, applied pre-seeding and post-harvest every year. The wheat rhizosphere was sampled in the final year of the study and analysed for microbial biomass C (MBC), the composition and diversity of the microbiome, and activities of β-glucosidase, N-acetyl-β-glucosiminidase, acid phosphomonoesterase and arylsulphatase. Glyphosate did not affect MBC, the composition and diversity of prokaryotes and fungi, and the activities of three of the four enzymes measured in the wheat rhizosphere. The one effect of glyphosate was a wave-like response of N-acetyl-β-glucosaminidase activity with increasing application rates. The experimental sites had much greater effects, driven by soil pH and organic C, on the soil microbiome composition and enzyme activities than glyphosate. Soil pH was positively correlated with the relative abundance of Acidobacteriota but negatively correlated with that of Actinobacteriota and Basidiomycota. Soil organic C was positively correlated with the relative abundances of Proteobacteriota and Verrucomicrobiota, but negatively correlated with the relative abundance of Crenachaeota. The activity of acid phosphomonoesterase declined with increasing relative abundance of Acidobacteriota, but increased with that of Actinobacteriota and Basidiomycota. The activity of N-acetyl-β-glucosaminidase also increased with increasing relative abundance of Actinobacteriota but decreased with that of Mortierellomycota. β-glucosidase activity also decreased with increasing relative abundance of Mortierellomycota. The core fungal species observed in at least 90% of the samples were Humicola nigrescens, Gibberella tricincta and Giberella fujikuroi. Therefore, this multi-site study on the Canadian prairies revealed no significant effects of 4-year applications of glyphosate applied at different rates on most soil microbial properties despite differences in the properties among sites. However, it is important to keep evaluating glyphosate effects on the soil microbiome and its functioning because it is the most widely used herbicide worldwide.
Collapse
Affiliation(s)
- Newton Z Lupwayi
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, Alberta, T1J 4B1, Canada.
| | - Robert E Blackshaw
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, Alberta, T1J 4B1, Canada
| | - Charles M Geddes
- Agriculture and Agri-Food Canada, Lethbridge Research and Development Centre, Lethbridge, Alberta, T1J 4B1, Canada
| | - Rob Dunn
- FarmWise Inc., Lethbridge, Alberta, Canada
| | - Renee M Petri
- Agriculture and Agri-Food Canada, Sherbrooke Research and Development Centre, 2000 College Street, Sherbrooke, Quebec, J1M 0C8, Canada
| |
Collapse
|
7
|
Florido FG, Regitano JB, Andrade PAM, Andreote FD, Brancalion PHS. A comprehensive experimental assessment of glyphosate ecological impacts in riparian forest restoration. ECOLOGICAL APPLICATIONS : A PUBLICATION OF THE ECOLOGICAL SOCIETY OF AMERICA 2022; 32:e02472. [PMID: 34652865 DOI: 10.1002/eap.2472] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/25/2020] [Revised: 04/15/2021] [Accepted: 06/04/2021] [Indexed: 06/13/2023]
Abstract
Competition with invasive grasses is one of the most important drivers of tree planting failures, especially in tropical forests. A widely disseminated weeding approach has been glyphosate spraying, the most used herbicide globally in forestry and ecosystem restoration. However, glyphosate use in restoration is highly controversial and requires further studies to elucidate its effects on restoration processes and the environment. We evaluated the use of glyphosate in riparian forest restoration and its impacts on tree planting costs, weed control efficiency, planted seedling performance, herbaceous and woody species regeneration, soil bacteria, and environmental contamination, using mowing treatments as a reference and based on a controlled experiment established in the Brazilian Atlantic Forest. Glyphosate spraying reduced by one-half and one-third the accumulated aboveground biomass of, respectively, weeds in general and of the invasive grass Urochloa decumbens compared to mowing treatments, and it reduced the cost by half. The performance of planted tree seedlings was markedly favored by glyphosate spraying compared to mowing treatments, as expressed by improved seedling height (~twice higher), crown area (~5× higher), and basal area (~5× higher); the regeneration of both native woody and ruderal herbaceous plants were also enhanced. Neither glyphosate nor its metabolite Aminomethylphosphonic acid (AMPA) residues were detected in either water runoff or soil samples, but they were found at relatively high concentrations in the runoff sediments (from 1.32 to 24.75 mg/kg for glyphosate and from 1.75 to 76.13 mg/kg for AMPA). Soil bacteria communities differed before and after glyphosate spraying in comparison to mowing plots (without glyphosate). Glyphosate spraying was far more cost effective than mowing for controlling U. decumbens and greatly improved the performance of planted tree seedlings and natural regeneration, while not leaving residues in soil and water. However, the changes in the structure of bacterial communities and high concentration of glyphosate and AMPA residues in runoff sediments highlight the need for caution when using this herbicide in riparian buffers. We present alternatives for reducing glyphosate use and minimizing its risks in tree planting initiatives.
Collapse
Affiliation(s)
- Flávia G Florido
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Avenida Pádua Dias, 11, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Jussara B Regitano
- Department of Soil Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Avenida Pádua Dias, 11, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Pedro A M Andrade
- Department of Genetics, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Avenida Pádua Dias, 11, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Fernando D Andreote
- Department of Soil Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Avenida Pádua Dias, 11, Piracicaba, Sao Paulo, 13418-900, Brazil
| | - Pedro H S Brancalion
- Department of Forest Sciences, "Luiz de Queiroz" College of Agriculture, University of São Paulo, Avenida Pádua Dias, 11, Piracicaba, Sao Paulo, 13418-900, Brazil
| |
Collapse
|
8
|
Ezazi R, Ahmadzadeh M, Majidian S, Stefani E, Pindo M, Donati C. Responses of cucumber (Cucumis sativus L.) rhizosphere microbial community to some agronomic management practices. FEMS Microbiol Ecol 2021; 97:6325168. [PMID: 34289042 DOI: 10.1093/femsec/fiab107] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/28/2020] [Accepted: 07/19/2021] [Indexed: 11/14/2022] Open
Abstract
The microbial communities associated to the rhizosphere (the rhizomicrobiome) have a substantial impact on plant growth and yield. Understanding the effects of agricultural management on the rhizomicrobiome is very important for selecting efficient practices. By sequencing the V4 region of 16S rRNA for bacteria and the ITS1 regions and fungi, we investigated the influences of agronomic practices, including cucumber grafting on cucurbit hybrid (Cucurbita moschata × C. maxima), cucumber-garlic intercropping, and treatment with fungicide iprodione-carbendazim on cucumber rhizosphere microbial communities during plant growth. Soil dehydrogenase activity (DHA) and plant vegetative parameters were assessed as an indicator of overall soil microbial activity. We found that both treatments and growth stage induced significant shifts in microbial community structure. Grafting had the highest number of differentially abundant OTUs compared to control samples, followed by intercropping and fungicide treatment, while plant development stage affected both alpha and beta diversities indices and composition of the rhizomicrobiome. DHA was more dependent on plant growth stages than on treatments. Among the assessed factors, grafting and plant developmental stage resulted in the greatest changes in the microbial community composition. Grafting also increased the plant growth parameters, suggesting that this method should be further investigated in vegetable production systems.
Collapse
Affiliation(s)
- Robab Ezazi
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Daneshkadeh Ave., Karaj, Iran, Postal code: 31587-77871
| | - Masoud Ahmadzadeh
- Department of Plant Protection, College of Agriculture and Natural Resources, University of Tehran, Daneshkadeh Ave., Karaj, Iran, Postal code: 31587-77871
| | - Sina Majidian
- School of Electrical Engineering, Iran university of science and technology, Narmak, Hengam street, Tehran, Iran, Postal code: 16846-13114
| | - Erika Stefani
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all'Adige (TN) - Italy
| | - Massimo Pindo
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all'Adige (TN) - Italy
| | - Claudio Donati
- Unit of Computational Biology, Research and Innovation Centre, Fondazione Edmund Mach, Via Mach 1, 38010 San Michele all'Adige (TN) - Italy
| |
Collapse
|
9
|
Wang Y, Du L, Liu H, Long D, Huang M, Wang Y, Huang S, Jin D. Halosulfuron methyl did not have a significant effect on diversity and community of sugarcane rhizosphere microflora. JOURNAL OF HAZARDOUS MATERIALS 2020; 399:123040. [PMID: 32526443 DOI: 10.1016/j.jhazmat.2020.123040] [Citation(s) in RCA: 25] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2020] [Revised: 05/24/2020] [Accepted: 05/24/2020] [Indexed: 06/11/2023]
Abstract
Halosulfuron methyl (HM) is a new, highly active sulfonylurea herbicide that has been widely used for weed control in agricultural production. However, its potential ecological risks remain unknown. In this study, we investigated the impact of different concentrations of HM on bacterial communities in sugarcane rhizospheric soil by using 16S rRNA gene high-throughput sequencing. The half-life of HM for 130 mg/kg, 600 mg/kg, and 1300 mg/kg spraying concentrations were 6.64, 9.19, and 9.87 d, respectively. HM application did not alter the alpha or beta diversity of the soil bacterial community, whereas some microbial populations and the main microbial functional groups were significantly altered by HM exposure. The phylum Cyanobacteria and genus unclassified Chloroflexi group KD4-96 were found to be positively correlated with HM concentration in soils, indicating that they are highly involved in the biodegradation of HM in soils. Relationship analysis between soil properties and microbial communities showed that total nitrogen and total phosphorus concentration were two key factors that significantly influenced microbial community structure. To our best knowledge, this is the first microbial ecotoxicological assessment of HM in agricultural soil.
Collapse
Affiliation(s)
- Yanhui Wang
- Guangxi Key Laboratory for Biology of Crop Diseases and Insect Pests, Institute of Plant Protection, Guangxi Academy of Agricultural Sciences, Nanning, 530007, China
| | - Liangwei Du
- College of Chemistry and Chemical Engineering, Guangxi University, Nanning, 530004, China
| | - Huijun Liu
- Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing, 102206, China
| | - Di Long
- Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning, 530007, China
| | - Mengge Huang
- Institute of Pesticide and Environmental Toxicology, Guangxi University, Nanning, 530007, China
| | - Yuting Wang
- Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing, 102206, China
| | - Shilin Huang
- Beijing Key Laboratory of Detection and Control of Spoilage Organisms and Pesticide Residues in Agricultural Products, Beijing University of Agriculture, Beijing, 102206, China
| | - Decai Jin
- Key Laboratory of Environmental Biotechnology, Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing, 100085, China.
| |
Collapse
|
10
|
Travlos I, de Prado R, Chachalis D, Bilalis DJ. Editorial: Herbicide Resistance in Weeds: Early Detection, Mechanisms, Dispersal, New Insights and Management Issues. Front Ecol Evol 2020. [DOI: 10.3389/fevo.2020.00213] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
|