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Kulik T, Treder K, Rochoń M, Załuski D, Sulima P, Olszewski J, Bilska K, Elena G, Kowalski T. Measurement of the effectiveness of Clonostachys rosea in reducing Fusarium biomass on wheat straw. J Appl Genet 2024:10.1007/s13353-024-00906-8. [PMID: 39276302 DOI: 10.1007/s13353-024-00906-8] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/21/2024] [Revised: 09/04/2024] [Accepted: 09/05/2024] [Indexed: 09/16/2024]
Abstract
The survival and growth of plant pathogens on crop residues are key factors facilitating the dynamics of crop diseases. Spores (e.g., perithecia, and chlamydospores) and mycelium of pathogenic fungi overwinter on harvest residues, such as straw, and serve as initial inoculum infecting crops in the next growing season. Therefore, targeting overwintering fungi is essential to attaining effective disease control. Beneficial microorganisms offer advantages in controlling pathogens through their ability to colonize and exploit different environmental niches. In this study, we applied qPCR assays to explore the biocontrol performance of locally isolated strains of Clonostachys against various Fusarium pathogens. We proved that prior colonization of wheat straw by Fusarium spp. can be effectively reduced by Clonostachys rosea. We demonstrated that the efficiency of C. rosea to reduce Fusarium inoculum appears to remain at a similar level for most studied strains regardless of the target pathogen and the level of colonization of substrates by pathogens. Efficient performance of local C. rosea strains identifies possible targets for future strategies to control Fusarium diseases in cereals. Our study also highlights the challenge in sequence-based determination of C. rosea, which is crucial for the efficient selection of beneficial strains for biocontrol purposes.
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Affiliation(s)
- Tomasz Kulik
- Department of Botany and Evolutionary Ecology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 1, 10-718, Olsztyn, Poland.
| | - Kinga Treder
- Department of Agroecosystems, Faculty of Environmental Management and Agriculture, University of Warmia and Mazury in Olsztyn, Plac Łódzki 3, 10-718, Olsztyn, Poland
| | - Marta Rochoń
- Department of Botany and Evolutionary Ecology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 1, 10-718, Olsztyn, Poland
| | - Dariusz Załuski
- Department of Genetics, Plant Breeding and Bioresource Engineering, Plac Lodzki 3, 10-724, Olsztyn, Poland
| | - Paweł Sulima
- Department of Genetics, Plant Breeding and Bioresource Engineering, Plac Lodzki 3, 10-724, Olsztyn, Poland
| | - Jacek Olszewski
- Experimental Education Unit, University of Warmia and Mazury in Olsztyn, Pl. Łódzki 1, 10-727, Olsztyn, Poland
| | - Katarzyna Bilska
- Department of Botany and Evolutionary Ecology, University of Warmia and Mazury in Olsztyn, Plac Lodzki 1, 10-718, Olsztyn, Poland
| | - Georgina Elena
- Wageningen Plant Research, Wageningen University and Research, P.O. Box 16, 6700 AA, Wageningen, the Netherlands
| | - Tadeusz Kowalski
- Department of Forest Ecosystems Protection, University of Agriculture in Krakow, Al. 29 Listopada 46, 31-425, Krakow, Poland
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Burgos-Aceves MA, Banaee M, Vazzana I, Betancourt-Lozano M, González-Mille DJ, Aliko V, Faggio C, Ilizaliturri-Hernández CA. Effect of emerging pollutants on the gut microbiota of freshwater animals: Focusing on microplastics and pesticides. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 948:174809. [PMID: 39019277 DOI: 10.1016/j.scitotenv.2024.174809] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/20/2024] [Revised: 07/08/2024] [Accepted: 07/13/2024] [Indexed: 07/19/2024]
Abstract
In recent years, emerging environmental pollutants have increasingly endangered the health of freshwater organisms. The gut microbiota exhibits sensitivity to medications, dietary factors and environmental pollutants, rendering it a novel target for toxicological studies. The gut microbiota can be a potential exposure route affecting the host's health. Herein, we review the current knowledge on two different but concurrent pollutants, microplastics and pesticides, regarding their impact on the gut microbiota, which includes alterations in microbial composition, gene expression, function, and health effects in the hosts. Moreover, synergetic interactions between microplastics and pesticides can exacerbate dysbiosis and health risks. We discuss health-related implications of gut microbial changes based on the consequences in metabolism, immunity, and physiology function. Further research is needed to discover the mechanisms underlying these effects and develop strategies for mitigating their harmful impacts on freshwater animals.
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Affiliation(s)
- Mario A Burgos-Aceves
- Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), CIACyT, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico
| | - Mahdi Banaee
- Aquaculture Department, Faculty of Natural Resources and the Environment, Behbahan Khatam Alanbia University of Technology, Behbahan, Iran
| | - Irene Vazzana
- Istituto Zooprofilattico Sperimentale della Sicilia "A.Mirri", Palermo, Italy
| | | | - Donají J González-Mille
- Programa Cátedras del Consejo Nacional de Ciencia y Tecnología (CONACyT), Universidad Autónoma de San Luis Potosí, San Luis Potosí, México
| | - Valbona Aliko
- Department of Biology, Faculty of Natural Sciences, University of Tirana, Tirana, Albania
| | - Caterina Faggio
- Department of Chemical, Biological, Pharmaceutical, and Environmental Sciences, University of Messina, Viale F. Stagno d'Alcontres, 31, Messina, Italy; Department of Eco-sustainable Marine Biotechnology, Stazione Zoologica Anton Dohrn, Naples, Italy
| | - César A Ilizaliturri-Hernández
- Centro de Investigación Aplicada en Ambiente y Salud (CIAAS), CIACyT, Facultad de Medicina, Universidad Autónoma de San Luis Potosí, San Luis Potosí, Mexico.
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3
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Wang Y, Yang X, Harkes P, van Steenbrugge JJM, Xu M, Geissen V. Soil microeukaryotic communities and phosphorus-cycling microorganisms respond to chloropicrin fumigation and azoxystrobin application. THE SCIENCE OF THE TOTAL ENVIRONMENT 2024; 933:172871. [PMID: 38697530 DOI: 10.1016/j.scitotenv.2024.172871] [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: 11/08/2023] [Revised: 03/23/2024] [Accepted: 04/27/2024] [Indexed: 05/05/2024]
Abstract
Fumigants and fungicides are effective at controlling soil-borne pathogens but might also adversely affect soil beneficial microbes, such as soil phosphorus (P) solubilizing microbes, further altering nutrient cycling processes. Therefore, this study investigated the effects of the fumigant chloropicrin (CP) and the fungicide azoxystrobin (AZO) on soil microeukaryotes and P-cycling related soil bacteria through a greenhouse experiment. Soil microeukaryotic communities and bacterial communities containing two phosphomonoesterase encoding genes (phoC and phoD) were analysed using high-throughput sequencing methods. Results showed that, when applied at the field recommended application dosage, the fungicide AZO had no significant influence on the community structure of soil microeukaryotes and phoD-containing bacteria. However, in CP-fumigated soils, the soil microeukaryotic community composition changed from fungi-dominated to protist-dominated. CP fumigation significantly decreased the total phoC/phoD gene copy number but increased the relative abundance of some phoC/phoD-containing bacteria (such as Sinorhizobium and Streptomyces), which are significantly positively correlated to available P compositions in soil. The structural equation model (SEM) confirmed that CP fumigation could affect soil available P content directly by altering phoC-/phoD-containing bacteria, or indirectly by affecting phoC/phoD gene abundance and acid/alkaline phosphatases activity in soil. The inconsistent changes in phoC/phoD-containing bacteria, phoC/phoD gene number, and the phosphomonoesterase activities indicated that enzyme secretion may not be the only way for P solubilizing soil microorganisms to regulate P availability after soil fumigation. The outcome of this study can provide theoretical support for the design of soil beneficial microorganism recovery strategies and the regulation of phosphate fertilizer after soil fumigation.
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Affiliation(s)
- Yan Wang
- Key Laboratory of Arable Land Quality Monitoring and Evaluation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Soil Physics and Land Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Xiaomei Yang
- Soil Physics and Land Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands; College of Natural Resources and Environment, Northwest A&F University, Yangling, Shaanxi 712100, China
| | - Paula Harkes
- Soil Physics and Land Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands
| | - Joris J M van Steenbrugge
- Laboratory of Nematology, Wageningen University, Droevendaalsesteeg 1, 6708 PB Wageningen, the Netherlands
| | - Minggang Xu
- Key Laboratory of Arable Land Quality Monitoring and Evaluation, Ministry of Agriculture and Rural Affairs, Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China; Institute of Eco-environment and Industrial Technology, Shanxi Agricultural University, Shanxi Province Key Laboratory of Soil Environment and Nutrient Resources, Taiyuan 030031, China.
| | - Violette Geissen
- Soil Physics and Land Management Group, Wageningen University, P.O. Box 47, 6700 AA Wageningen, the Netherlands
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Xu J, Knight T, Boone D, Saleem M, Finley SJ, Gauthier N, Ayariga JA, Akinrinlola R, Pulkoski M, Britt K, Tolosa T, Rosado-Rivera YI, Iddrisu I, Thweatt I, Li T, Zebelo S, Burrack H, Thiessen L, Hansen Z, Bernard E, Kuhar T, Samuel-Foo M, Ajayi OS. Influence of Fungicide Application on Rhizosphere Microbiota Structure and Microbial Secreted Enzymes in Diverse Cannabinoid-Rich Hemp Cultivars. Int J Mol Sci 2024; 25:5892. [PMID: 38892079 PMCID: PMC11172691 DOI: 10.3390/ijms25115892] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2024] [Revised: 05/10/2024] [Accepted: 05/17/2024] [Indexed: 06/21/2024] Open
Abstract
Microbes and enzymes play essential roles in soil and plant rhizosphere ecosystem functioning. However, fungicides and plant root secretions may impact the diversity and abundance of microbiota structure and enzymatic activities in the plant rhizosphere. In this study, we analyzed soil samples from the rhizosphere of four cannabinoid-rich hemp (Cannabis sativa) cultivars (Otto II, BaOx, Cherry Citrus, and Wife) subjected to three different treatments (natural infection, fungal inoculation, and fungicide treatment). DNA was extracted from the soil samples, 16S rDNA was sequenced, and data were analyzed for diversity and abundance among different fungicide treatments and hemp cultivars. Fungicide treatment significantly impacted the diversity and abundance of the hemp rhizosphere microbiota structure, and it substantially increased the abundance of the phyla Archaea and Rokubacteria. However, the abundances of the phyla Pseudomonadota and Gemmatimonadetes were substantially decreased in treatments with fungicides compared to those without fungicides in the four hemp cultivars. In addition, the diversity and abundance of the rhizosphere microbiota structure were influenced by hemp cultivars. The influence of Cherry Citrus on the diversity and abundance of the hemp rhizosphere microbiota structure was less compared to the other three hemp cultivars (Otto II, BaOx, and Wife). Moreover, fungicide treatment affected enzymatic activities in the hemp rhizosphere. The application of fungicides significantly decreased enzyme abundance in the rhizosphere of all four hemp cultivars. Enzymes such as dehydrogenase, dioxygenase, hydrolase, transferase, oxidase, carboxylase, and peptidase significantly decreased in all the four hemp rhizosphere treated with fungicides compared to those not treated. These enzymes may be involved in the function of metabolizing organic matter and degrading xenobiotics. The ecological significance of these findings lies in the recognition that fungicides impact enzymes, microbiota structure, and the overall ecosystem within the hemp rhizosphere.
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Affiliation(s)
- Junhuan Xu
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Tyson Knight
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Donchel Boone
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Muhammad Saleem
- Department of Biological Sciences, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA
| | - Sheree J. Finley
- Department of Physical and Forensic Sciences, Alabama State University, 915 S. Jackson Street, Montgomery, AL 36104, USA
| | - Nicole Gauthier
- Department of Plant Pathology, University of Kentucky, 201F Plant Science Building, Lexington, KY 40546, USA;
| | - Joseph A. Ayariga
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Rufus Akinrinlola
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN 37996, USA
| | - Melissa Pulkoski
- Department of Crop Science, North Carolina State University, Raleigh, NC 27962, USA
| | - Kadie Britt
- Department of Entomology, Virginia Polytechnic Institute and State University, 170 Drillfield Drive, 220 Price Hall, Blacksburg, VA 24061, USA; (K.B.)
| | - Tigist Tolosa
- Department of Agriculture Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | | | - Ibrahim Iddrisu
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Ivy Thweatt
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Ting Li
- Department of Biological Sciences, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA
| | - Simon Zebelo
- Department of Agriculture Food and Resource Sciences, University of Maryland Eastern Shore, Princess Anne, MD 21853, USA
| | - Hannah Burrack
- Department of Entomology, Michigan State University, East Lansing, MI 48824, USA
| | - Lindsey Thiessen
- Department of Crop Science, North Carolina State University, Raleigh, NC 27962, USA
- USDA-APHIS-PPQ, Raleigh, NC 27606, USA
| | - Zachariah Hansen
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN 37996, USA
- Emerging Pests and Pathogens Research Unit, USDA-ARS, 538 Tower Rd., Ithaca, NY 14850, USA
| | - Ernest Bernard
- Department of Entomology and Plant Pathology, University of Tennessee, Knoxville, TN 37996, USA
| | - Thomas Kuhar
- Department of Entomology, Virginia Polytechnic Institute and State University, 170 Drillfield Drive, 220 Price Hall, Blacksburg, VA 24061, USA; (K.B.)
| | - Michelle Samuel-Foo
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
| | - Olufemi S. Ajayi
- The Industrial Hemp Program, Alabama State University, 1627 Harris Way, Montgomery, AL 36104, USA (J.A.A.)
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5
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Leal CM, Geiger A, Molnár A, Váczy KZ, Kgobe G, Zsófi Z, Geml J. Disentangling the effects of terroir, season, and vintage on the grapevine fungal pathobiome. Front Microbiol 2024; 14:1322559. [PMID: 38298541 PMCID: PMC10829339 DOI: 10.3389/fmicb.2023.1322559] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/16/2023] [Accepted: 12/19/2023] [Indexed: 02/02/2024] Open
Abstract
The composition, diversity and dynamics of microbial communities associated with grapevines may be influenced by various environmental factors, including terroir, vintage, and season. Among these factors, terroir stands out as a unique possible determinant of the pathobiome, the community of plant-associated pathogens. This study employed high-throughput molecular techniques, including metabarcoding and network analysis, to investigate the compositional dynamics of grapevine fungal pathobiome across three microhabitats (soil, woody tissue, and bark) using the Furmint cultivar. Samples were collected during late winter and late summer in 2020 and 2021, across three distinct terroirs in Hungary's Tokaj wine region. Of the 123 plant pathogenic genera found, Diplodia, Phaeomoniella, and Fusarium displayed the highest richness in bark, wood, and soil, respectively. Both richness and abundance exhibited significant disparities across microhabitats, with plant pathogenic fungi known to cause grapevine trunk diseases (GTDs) demonstrating highest richness and abundance in wood and bark samples, and non-GTD pathogens prevailed soil. Abundance and richness, however, followed distinct patterns Terroir accounted for a substantial portion of the variance in fungal community composition, ranging from 14.46 to 24.67%. Season and vintage also contributed to the variation, explaining 1.84 to 2.98% and 3.67 to 6.39% of the variance, respectively. Notably, significant compositional differences in fungi between healthy and diseased grapevines were only identified in wood and bark samples. Cooccurrence networks analysis, using both unweighted and weighted metrics, revealed intricate relationships among pathogenic fungal genera. This involved mostly positive associations, potentially suggesting synergism, and a few negative relationships, potentially suggesting antagonistic interactions. In essence, the observed differences among terroirs may stem from environmental filtering due to varied edaphic and mesoclimatic conditions. Temporal weather and vine management practices could explain seasonal and vintage fungal dynamics. This study provides insights into the compositional dynamics of grapevine fungal pathobiome across different microhabitats, terroirs, seasons, and health statuses. The findings emphasize the importance of considering network-based approaches in studying microbial communities and have implications for developing improved viticultural plant health strategies.
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Affiliation(s)
- Carla Mota Leal
- ELKH-EKKE Lendulet Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Doctoral School of Environmental Sciences, Hungarian University of Agricultural and Life Sciences, Gödöllő, Hungary
| | - Adrienn Geiger
- ELKH-EKKE Lendulet Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Doctoral School of Environmental Sciences, Hungarian University of Agricultural and Life Sciences, Gödöllő, Hungary
- Food and Wine Research Institute, Eszterházy Károly Catholic University, Eger, Hungary
| | - Anna Molnár
- ELKH-EKKE Lendulet Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Food and Wine Research Institute, Eszterházy Károly Catholic University, Eger, Hungary
| | - Kálmán Z. Váczy
- ELKH-EKKE Lendulet Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Food and Wine Research Institute, Eszterházy Károly Catholic University, Eger, Hungary
| | - Glodia Kgobe
- ELKH-EKKE Lendulet Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Doctoral School of Environmental Sciences, Hungarian University of Agricultural and Life Sciences, Gödöllő, Hungary
| | - Zsolt Zsófi
- Institute for Viticulture and Enology, Eszterházy Károly Catholic University, Eger, Hungary
| | - József Geml
- ELKH-EKKE Lendulet Environmental Microbiome Research Group, Eszterházy Károly Catholic University, Eger, Hungary
- Food and Wine Research Institute, Eszterházy Károly Catholic University, Eger, Hungary
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6
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Sliti A, Singh V, Ibal JC, Jeong M, Shin JH. Impact of propiconazole fungicide on soil microbiome (bacterial and fungal) diversity, functional profile, and associated dehydrogenase activity. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH INTERNATIONAL 2024; 31:8240-8253. [PMID: 38175519 DOI: 10.1007/s11356-023-31643-w] [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: 08/10/2023] [Accepted: 12/17/2023] [Indexed: 01/05/2024]
Abstract
Pesticides, protect crops but can harm the environment and human health when used without caution. This study evaluated the impact of propiconazole, a fungicide that acts on fungal cell membranes, on soil microbiome abundance, diversity, and functional profile, as well as soil dehydrogenase activity (DHA). The study conducted microcosm experiments using soil samples treated with propiconazole and employed next-generation sequencing (MiSeq) and chromatographic approaches (GC-MS/MS) to analyze the shift in microbial communities and propiconazole level, respectively. The results showed that propiconazole significantly altered the distribution of microbial communities, with notable changes in the abundance of various bacterial and fungal taxa. Among soil bacterial communities, the relative abundance of Proteobacteria and Planctomycetota increased, while that of Acidobacteria decreased after propiconazole treatment. In the fungal communities, propiconazole increased the abundance of Ascomycota and Basidiomycota in the treated soil, while that of Mortierellomycota was reduced. Fungicide application further triggered a significant decrease in DHA over time. Analysis of the functional profile of bacterial communities showed that propiconazole significantly affected bacterial cellular and metabolic pathways. The carbon degradation pathway was upregulated, indicating the microbial detoxification of the contaminant in the treated soil. Our findings suggest that propiconazole application has a discernible impact on soil microbial communities, which could have long-term consequences for soil health, quality, and function.
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Affiliation(s)
- Amani Sliti
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Vineet Singh
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jerald Conrad Ibal
- Department of Biological Sciences, Idaho State University, Pocatello, ID, 83209, USA
| | - Minsoo Jeong
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea
| | - Jae-Ho Shin
- Department of Applied Biosciences, Kyungpook National University, Daegu, 41566, Republic of Korea.
- NGS Core Facility, Kyungpook National University, Daegu, 41566, Republic of Korea.
- Department of Integrative Biotechnology, Kyungpook National University, Daegu, 41566, Republic of Korea.
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7
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Zhang H, Shen T, Tang J, Ling H, Wu X. Key taxa and mobilome-mediated responses co-reshape the soil antibiotic resistome under dazomet fumigation stress. ENVIRONMENT INTERNATIONAL 2023; 182:108318. [PMID: 37984292 DOI: 10.1016/j.envint.2023.108318] [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: 09/05/2023] [Revised: 11/08/2023] [Accepted: 11/08/2023] [Indexed: 11/22/2023]
Abstract
Agrochemicals are emergingly being implicated in the widespread dissemination of antibiotic resistance genes (ARGs) in agroecosystems. However, minimal research exists on the disturbance of fumigant on soil ARGs. Focusing on a typical fumigant dazomet in a simulated soil microcosm, we characterized the dazomet-triggered timely response and longstanding dynamic of ARGs at one-fold and two-fold field recommended doses using metagenome and quantitative PCR. Dazomet treatments reduced 13.17%-69.98% of absolute abundance of 16S rRNA gene and targeted ARGs, but, awfully, boosted diversity and relative abundance of ARGs up to 1.33-1.60 and 1.62-1.90 folds, respectively. Approximately 77.28% of changes in relative abundance of ARGs could be explained by bacterial community and mobile genetic elements (MGEs). Mechanistically, primary hosts of ARGs shifted from Proteobacteria (control) to Firmicutes and Actinobacteria (treatments) accompanied with corresponding changes in their abundance by combining community analysis, host tracking analysis and antibiotic resistant bacteria assay. Meanwhile, dazomet exposure significantly increased the incidence of MGEs and stimulated the conjugation of antibiotic-resistant plasmid. In addition, absolute abundance of targeted ARGs gradually recovered in the post-fumigation stage. Collectively, our results elucidate the dazomet-triggered emergence and spread of soil ARGs and highlight the importance of navigating toward rational use of fumigant in agricultural fields.
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Affiliation(s)
- Houpu Zhang
- College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China
| | - Tiantian Shen
- College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China
| | - Jun Tang
- College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China
| | - Hong Ling
- College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China
| | - Xiangwei Wu
- College of Resources and Environment, Anhui Agricultural University, Key Laboratory of Agri-food Safety of Anhui Province, Hefei 230036, PR China.
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8
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Lagos S, Tsetsekos G, Mastrogianopoulos S, Tyligada M, Diamanti L, Vasileiadis S, Sotiraki S, Karpouzas DG. Interactions of anthelmintic veterinary drugs with the soil microbiota: Toxicity or enhanced biodegradation? ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 334:122135. [PMID: 37406753 DOI: 10.1016/j.envpol.2023.122135] [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: 04/15/2023] [Revised: 06/26/2023] [Accepted: 07/01/2023] [Indexed: 07/07/2023]
Abstract
Anthelmintic (AH) compounds are used to control gastrointestinal nematodes (GINs) in livestock production. They are only partially metabolized in animals ending in animal excreta whose use as manures leads to AH dispersal in agricultural soils. Once in soil, AHs interact with soil microorganisms, with the outcome being either detrimental, or beneficial. We aimed to disentangle the mechanisms of these complex interactions. Two soils previously identified as « fast » or « slow», regarding the degradation of albendazole (ABZ), ivermectin (IVM), and eprinomectin (EPM), were subjected to repeated applications at two dose rates (1, 2 mg kg-1and 10, 20 mg kg-1). We hypothesized that this application scheme will lead to enhanced biodegradation in «fast » soils and accumulation and toxicity in «slow » soils. Repeated application of ABZ resulted in different transformation pathways in the two soils and a clear acceleration of its degradation in the «fast » soil only. In contrast residues of IVM and EPM accumulated in both soils. ABZ was the sole AH that induced a consistent reduction in the abundance of total fungi and crenarchaea. In addition, inhibition of nitrification and reduction in the abundance of ammonia-oxidizing bacteria (AOB) and archaea (AOA) by all AHs was observed, while commamox bacteria were less responsive. Amplicon sequencing analysis showed dose-depended shifts in the diversity of bacteria, fungi, and protists in response to AHs application. ABZ presented the most consistent effect on the abundance and diversity of most microbial groups. Our findings provide first evidence for the unexpected toxicity of AHs on key soil microbial groups that might have to be considered in a regulatory context.
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Affiliation(s)
- Stathis Lagos
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece
| | - Georgios Tsetsekos
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece
| | - Spyridon Mastrogianopoulos
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece
| | - Maria Tyligada
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece
| | - Lamprini Diamanti
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece
| | - Sotirios Vasileiadis
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece
| | - Smaragda Sotiraki
- Laboratory of Parasitology, Hellenic Agricultural Organization-Demeter, Veterinary Research Institute, 57001, Thermi, Greece
| | - Dimitrios G Karpouzas
- Department of Biochemistry and Biotechnology, Laboratory of Plant and Environmental Biotechnology, University of Thessaly, Viopolis, 41500, Larissa, Greece.
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Sun J, Yang J, Zhao S, Yu Q, Weng L, Xiao C. Root exudates influence rhizosphere fungi and thereby synergistically regulate Panax ginseng yield and quality. Front Microbiol 2023; 14:1194224. [PMID: 37547697 PMCID: PMC10397396 DOI: 10.3389/fmicb.2023.1194224] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/26/2023] [Accepted: 07/06/2023] [Indexed: 08/08/2023] Open
Abstract
Root exudates contain a complex array of primary and specialized metabolites that play important roles in plant growth due to their stimulatory and inhibitory activities that can select for specific microbes. In this study, we investigated the effects of different root exudate concentrations on the growth of ginseng (Panax ginseng C. A. Mey), ginsenoside levels, and soil fungal community composition and diversity. The results showed that low root exudate concentrations in the soil promoted ginseng rhizome biomass and ginsenoside levels (Rg1, Re, Rf, Rg2, Rb1, Ro, Rc, Rb2, Rb3, and Rd) in rhizomes. However, the rhizome biomass and ginsenoside levels gradually decreased with further increases in the root exudate concentration. ITS sequencing showed that low root exudate concentrations in the soil hardly altered the rhizosphere fungal community structure. High root exudate concentrations altered the structure, involving microecological imbalance, with reduced abundances of potentially beneficial fungi (such as Mortierella) and increased abundances of potentially pathogenic fungi (such as Fusarium). Correlation analysis showed that rhizome biomass and ginsenoside levels were significantly positively correlated with the abundances of potentially beneficial fungi, while the opposite was true for potentially pathogenic fungi. Overall, low root exudate concentrations promote the growth and development of ginseng; high root exudate concentrations lead to an imbalance in the rhizosphere fungal community of ginseng and reduce the plant's adaptability. This may be an important factor in the reduced ginseng yield and quality and soil sickness when ginseng is grown continuously.
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Feng F, Sun X, Jiang W, Ma L, Wang Y, Sheng H, Li Y, Yu X. Stenotrophomonas pavanii DJL-M3 inoculated biochar stabilizes the rhizosphere soil homeostasis of carbendazim-stressed rice. ENVIRONMENTAL POLLUTION (BARKING, ESSEX : 1987) 2023; 329:121723. [PMID: 37105458 DOI: 10.1016/j.envpol.2023.121723] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 12/13/2022] [Revised: 04/23/2023] [Accepted: 04/24/2023] [Indexed: 05/21/2023]
Abstract
Plant-microbe interactions have been effectively used in phytoremediation to reduce agrochemical contamination of crops and soils, but little information is available regarding the general effect of such association on rhizosphere soil homeostasis. In this study, we immobilized Stenotrophomonas pavanii DJL-M3, a carbendazim (CBZ)-degrading endophyte, in rice husk-derived biochar to control fungicide residue in the rice microenvironment. The influence of biochar inoculated with strain DJL-M3 on rhizobacterial communities was also investigated, including activity and fundamental function predictions. An adsorption kinetics test showed that strain DJL-M3 slowed the adsorption rate slightly without sacrificing the adsorption capacity of rice-husk biochar on CBZ. Immobilization in biochar helped S. pavanii DJL-M3 to establish an ecological niche in rhizosphere soils. This process significantly reduced CBZ levels in rice and rhizosphere soil while maintaining stable heterotrophic microbial respiration and carbon (C) metabolic activity. Soil amendment with the strain DJL-M3-biochar composite resulted in relatively little disturbance of fundamental soil functions, such as nitrogen (N) and sulfur (S) cycling, which explained the better plant growth and higher soil fertility observed with CBZ contamination. Overall, the combination of biochar and S. pavanii DJL-M3 demonstrated the potential to safeguard the microbiological environment of rice.
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Affiliation(s)
- Fayun Feng
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Xing Sun
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Wenqi Jiang
- School of Environment, Nanjing University, Nanjing, 210014, China
| | - Liya Ma
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Ya Wang
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Honjie Sheng
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Yong Li
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China
| | - Xiangyang Yu
- Institute of Food Safety and Nutrition, Key Lab of Food Quality and Safety of Jiangsu Province-State Key Laboratory Breeding Base, Jiangsu Academy of Agricultural Sciences, Nanjing, 210014, China.
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El-Sharkawy HHA, Rashad YM, Elazab NT. Synergism between Streptomyces viridosporus HH1 and Rhizophagus irregularis Effectively Induces Defense Responses to Fusarium Wilt of Pea and Improves Plant Growth and Yield. J Fungi (Basel) 2022; 8:683. [PMID: 35887440 PMCID: PMC9318455 DOI: 10.3390/jof8070683] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/12/2022] [Revised: 06/26/2022] [Accepted: 06/27/2022] [Indexed: 12/10/2022] Open
Abstract
Fusarium wilt is a detrimental disease of pea crop, resulting in severe damage and a reduction in its yield. Developing synergistically enhanced bioagents for disease management and growth promotion is pivotal for food safety, security, and sustainability. In this study, biocontrol potential of treating pea plants with Streptomycesviridosporus HH1 and/or their colonization with Rhizophagusirregularis against infection with Fusarium wilt was investigated. Impacts on the expression profiles of defense-related genes, biochemical, and ultrastructural levels, as well as the growth and yield of pea plants in response to these treatments, were also investigated. Data obtained indicated the antifungal activity of S. viridosporus HH1 against F. oxysporum f.sp. pisi in vitro. Furthermore, the GC-MS analysis revealed production of different bioactive compounds by S. viridosporus HH1, including 2,3-butanediol, thioglycolic acid, and phthalic acid. The results from the greenhouse experiment exhibited a synergistic biocontrol activity, resulting in a 77% reduction in disease severity in pea plants treated with S. viridosporus HH1 and colonized with R. irregularis. In this regard, this dual treatment overexpressed the responsive factor JERF3 (5.6-fold) and the defense-related genes β-1,3-glucanase (8.2-fold) and the pathogenesis-related protein 1 (14.5-fold), enhanced the total phenolic content (99.5%), induced the antioxidant activity of peroxidase (64.3%) and polyphenol oxidase (31.6%) enzymes in pea plants, reduced the antioxidant stress, and improved their hypersensitivity at the ultrastructural level in response to the Fusarium wilt pathogen. Moreover, a synergistic growth-promoting effect was also recorded in pea plants in response to this dual treatment. In this regard, due to this dual treatment, elevated levels of photosynthetic pigments and improved growth parameters were observed in pea leaves, leading to an increment in the yield (113%). In addition, application of S. viridosporus enhanced the colonization levels with R. irregularis in pea roots. Based on the obtained data, we can conclude that treating pea plants with S. viridosporus HH1 and colonization with R. irregularis have synergistic biocontrol activity and growth-promoting effects on pea plants against Fusarium wilt. Despite its eco-safety and effectiveness, a field evaluation of this treatment before a use recommendation is quite necessary.
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Affiliation(s)
- Hany H. A. El-Sharkawy
- Mycology Research and Plant Disease Survey Department, Agricultural Research Center, Plant Pathology Research Institute, Giza 12211, Egypt;
| | - Younes M. Rashad
- Plant Protection and Biomolecular Diagnosis Department, Arid Lands Cultivation Research Institute, City of Scientific Research and Technological Applications (SRTA-City), New Borg El-Arab City 21934, Egypt
| | - Nahla T. Elazab
- Botany Department, Faculty of Science, Mansoura University, Mansoura 35516, Egypt;
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Sun J, Luo H, Yu Q, Kou B, Jiang Y, Weng L, Xiao C. Optimal NPK Fertilizer Combination Increases Panax ginseng Yield and Quality and Affects Diversity and Structure of Rhizosphere Fungal Communities. Front Microbiol 2022; 13:919434. [PMID: 35801112 PMCID: PMC9255912 DOI: 10.3389/fmicb.2022.919434] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 05/25/2022] [Indexed: 11/25/2022] Open
Abstract
Soil microorganisms affect crop rhizospheres via the transformation and transport of nutrients, which has important influences on soil fertility, carbon sequestration, and plant yield and health in agroecosystems. There are few reports on the effects of fertilizer application on the growth of Panax ginseng (C. A. Mey.) or the structure of its rhizosphere microbial communities. In this study, an orthogonal experimental design was used to explore the effects of nine different combinations of nitrogen (N), phosphorus (P), and potassium (K) fertilizers with different amounts and proportions on ginseng growth and accumulation of ginsenosides and the structure of rhizosphere soil fungal communities. Soil without fertilization was the control. With the combined application of NPK, ginseng growth and development increased. The fertilization scheme N3P1K3, with N fertilizer at 50 g·m−2, P fertilizer at 15 g·m−2, and K fertilizer at 60 g·m−2, had the most comprehensive benefit and significantly increased ginseng rhizome biomass and ginsenoside contents (Rg1, Re, Rf, Rg2, Rb1, Ro, Rc, Rb2, Rb3, and Rd). Amplicon sequencing showed that NPK application increased the diversity of fungal communities in ginseng rhizospheres, whereas richness was bidirectionally regulated by proportions and amounts of NPK. Ascomycota was the dominant fungal phylum in ginseng rhizosphere soil, and relative abundances decreased with combined NPK application. Combined NPK application increased the relative abundance of potential beneficial fungi, such as Mortierella, but decreased that of potentially pathogenic fungi, such as Fusarium. Correlation analysis showed that potential beneficial fungi were significantly positively correlated with ginseng rhizome yield and ginsenoside contents, whereas the opposite relation was observed with potential pathogenic fungi. Thus, in addition to directly increasing crop growth, precise NPK application can also increase crop adaptability to the environment by shaping specific microbial communities. The results of this study suggest that the combined effects of biotic and abiotic processes on agricultural production determine crop yield and quality.
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Ascophyllum nodosum Extract and Mycorrhizal Colonization Synergistically Trigger Immune Responses in Pea Plants against Rhizoctonia Root Rot, and Enhance Plant Growth and Productivity. J Fungi (Basel) 2022; 8:jof8030268. [PMID: 35330270 PMCID: PMC8953849 DOI: 10.3390/jof8030268] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/13/2022] [Revised: 03/03/2022] [Accepted: 03/04/2022] [Indexed: 12/29/2022] Open
Abstract
Rhizoctonia root rot is one of the most destructive diseases affecting pea crops, resulting in up to 75% loss. In this study, the biocontrol activity of seaweed (Ascophyllum nodosum) extract at 1, 2, and 3% and/or mycorrhization of pea roots was investigated against Rhizoctonia root rot under greenhouse conditions. In addition, their effects on the transcriptional, physiological, ultrastructural, and growth status of pea plants were also studied. The results showed that the mycorrhizal colonization of pea roots and the application of the seaweed extract at 3% synergistically overexpressed the responsive factor (JERF3) recording 18.2-fold, and the defense-related genes peroxidase (23.2-fold) and chitinase II (31.8-fold). In addition, this treatment improved the activity of the antioxidant enzymes POD and PPO, increased the phenolic content in pea roots, and triggered multiple hypersensitivity reactions at the ultrastructural level of the cell, leading to a 73.1% reduction in disease severity. Moreover, a synergistic growth-promoting effect on pea plants was also observed. The photosynthetic pigments in pea leaves were enhanced in response to this dual treatment, which significantly improved their yield (24 g/plant). The inducing effect of mycorrhizal colonization on plant resistance and growth has been extensively studied. However, developing improved and synergistically acting biological agents for plant disease control and growth promotion as alternatives to the chemical fungicides is crucial for safety and food security. Based on these results, it can be concluded that the mycorrhizal colonization of pea roots and soaking their seeds in the A. nodosum extract at 3% have a promising and improved biocontrol activity against R. solani, and a growth-promoting effect on pea plants. However, field applications should be evaluated prior to any use recommendations.
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