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Jiang L, Li Y, Shi W, Chen W, Ma Z, Feng J, Hashem AS, Wu H. Cloning and expression of the mitochondrial cytochrome c oxidase subunit II gene in Sitophilus zeamais and interaction mechanism with allyl isothiocyanate. PESTICIDE BIOCHEMISTRY AND PHYSIOLOGY 2023; 192:105392. [PMID: 37105630 DOI: 10.1016/j.pestbp.2023.105392] [Citation(s) in RCA: 3] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2022] [Revised: 03/05/2023] [Accepted: 03/10/2023] [Indexed: 06/19/2023]
Abstract
In the United States, allyl isothiocyanate (AITC) has been registered as an insecticide, bactericide, and nematicide. And it has been confirmed that AITC has significant insecticidal activities against four stored product pests including Sitophilus zeamais Mostchulky (Coleoptera: Curculionidae). This study aimed to verify the mechanism of action of AITC on cytochrome c oxidase core subunits II in S. zeamais. Enzyme - catalyzed reactions and Fourier transform infrared spectrometer (FTIR) analysis revealed that the expressed COX II proteins could competitively bind and inhibit the activity of COX II. Furthermore, molecular docking results showed that a sulfur atom of AITC could form a 2.9 Å hydrogen bond with Ile-30, having a binding energy of -2.46 kcal/mol.
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Affiliation(s)
- Linlin Jiang
- College of Plant Protection, Northwest A & F University, Yangling 712100, China
| | - Yue Li
- College of Plant Protection, Northwest A & F University, Yangling 712100, China
| | - Weilin Shi
- College of Plant Protection, Northwest A & F University, Yangling 712100, China
| | - Wei Chen
- College of Plant Protection, Northwest A & F University, Yangling 712100, China
| | - Zhiqing Ma
- College of Plant Protection, Northwest A & F University, Yangling 712100, China; Provincial Center for Bio-Pesticide Engineering, Yangling, Shaanxi Province 712100, China
| | - Juntao Feng
- College of Plant Protection, Northwest A & F University, Yangling 712100, China; Provincial Center for Bio-Pesticide Engineering, Yangling, Shaanxi Province 712100, China
| | - Ahmed S Hashem
- Stored Product Pests Research Department, Plant Protection Research Institute Agricultural Research Center Sakha, Kafr El-Sheikh, Egypt
| | - Hua Wu
- College of Plant Protection, Northwest A & F University, Yangling 712100, China; Provincial Center for Bio-Pesticide Engineering, Yangling, Shaanxi Province 712100, China.
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De Clerck C, Josselin L, Vangoethem V, Lassois L, Fauconnier ML, Jijakli H. Weapons against Themselves: Identification and Use of Quorum Sensing Volatile Molecules to Control Plant Pathogenic Fungi Growth. Microorganisms 2022; 10:microorganisms10122459. [PMID: 36557712 PMCID: PMC9784989 DOI: 10.3390/microorganisms10122459] [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: 11/18/2022] [Revised: 12/06/2022] [Accepted: 12/09/2022] [Indexed: 12/15/2022] Open
Abstract
Quorum sensing (QS) is often defined as a mechanism of microbial communication that can regulate microbial behaviors in accordance with population density. Much is known about QS mechanisms in bacteria, but fungal QS research is still in its infancy. In this study, the molecules constituting the volatolomes of the plant pathogenic fungi Fusarium culmorum and Cochliobolus sativus have been identified during culture conditions involving low and high spore concentrations, with the high concentration imitating overpopulation conditions (for QS stimulation). We determined that volatolomes emitted by these species in conditions of overpopulation have a negative impact on their mycelial growth, with some of the emitted molecules possibly acting as QSM. Candidate VOCs related to QS have then been identified by testing the effect of individual volatile organic compounds (VOCs) on mycelial growth of their emitting species. The antifungal effect observed for the volatolome of F. culmorum in the overpopulation condition could be attributed to ethyl acetate, 2-methylpropan-1-ol, 3-methylbutyl ethanoate, 3-methylbutan-1-ol, and pentan-1-ol, while it could be attributed to longifolene, 3-methylbutan-1-ol, 2-methylpropan-1-ol, and ethyl acetate for C. sativus in the overpopulation condition. This work could pave the way to a sustainable alternative to chemical fungicides.
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Affiliation(s)
- Caroline De Clerck
- AgricultureIsLife, Gembloux Agro-Bio Tech, Liege University, Passage des Déportés 2, 5030 Gembloux, Belgium
- Correspondence:
| | - Laurie Josselin
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, Liege University, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Valentine Vangoethem
- Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech, Liege University, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Ludivine Lassois
- Plant Genetics and Rhizosphere Processes Lab., Gembloux Agro-Bio Tech, Liege University, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Marie-Laure Fauconnier
- Laboratory of Chemistry of Natural Molecules, Gembloux Agro-Bio Tech, Liege University, Passage des Déportés 2, 5030 Gembloux, Belgium
| | - Haïssam Jijakli
- Integrated and Urban Plant Pathology Laboratory, Gembloux Agro-Bio Tech, Liege University, Passage des Déportés 2, 5030 Gembloux, Belgium
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Achimón F, Peschiutta ML, Brito VD, Beato M, Pizzolitto RP, Zygadlo JA, Zunino MP. Exploring Contact Toxicity of Essential Oils against Sitophilus zeamais through a Meta-Analysis Approach. PLANTS (BASEL, SWITZERLAND) 2022; 11:3070. [PMID: 36432799 PMCID: PMC9696113 DOI: 10.3390/plants11223070] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 10/24/2022] [Revised: 11/08/2022] [Accepted: 11/11/2022] [Indexed: 06/16/2023]
Abstract
Sitophilus zeamais is a primary pest of maize. Our aim was to perform a qualitative review and meta-analyses with 56 scientific articles published from 1 January 2000 to 1 October 2022 dealing with direct (topical application) and indirect (impregnation of essential oils, EOs, onto filter paper or maize grains) contact toxicity of EOs against S. zeamais. Three independent meta-analyses of single means of LD50 (direct contact) and LC50 (indirect contact) were conducted using a random effect model. Essential oils more frequently evaluated were those belonging to Asteraceae, Apiaceae, Lamiaceae, Myrtaceae, Piperaceae, and Rutaceae. The LC50 global mean values were 33.19 µg/insect (CI95 29.81-36.95) for topical application; 0.40 µL/cm2 (CI95 0.25-0.65) for filter paper indirect contact; and 0.50 µL/g maize (CI95 0.27-0.90) for maize grains indirect contact. The species Carum carvi, Salvia umbratica, Ilicium difengpi, Periploca sepium, Cephalotaxus sinensis, Murraya exotica, Rhododendron anthopogonoides, Ruta graveolens, Eucalyptus viminalis, Ocotea odorifera, Eucalyptus globulus, Eucalyptus dunnii, Anethum graveolens, Ilicium verum, Cryptocarya alba, Azadirachta indica, Chenopodium ambrosioides, Cupressus semperivens, Schinus molle, Piper hispidinervum, Mentha longifolia, and Croton pulegiodorus showed LC50 or LD50 values lower than the global means, indicating good insecticidal properties. Our results showed that EOs have great potential to be used as bioinsecticides against S. zeamais.
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Affiliation(s)
- Fernanda Achimón
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
| | - Maria L. Peschiutta
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
| | - Vanessa D. Brito
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
| | - Magalí Beato
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
| | - Romina P. Pizzolitto
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Facultad de Ciencias Agropecuarias, Departamento de Recursos Naturales, Cátedra de Microbiología Agrícola, Universidad Nacional de Córdoba, Av. Ing. Agr. Félix Aldo Marrone 735, Córdoba X5016GCA, Argentina
| | - Julio A. Zygadlo
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Orgánica, Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
| | - María P. Zunino
- Instituto Multidisciplinario de Biología Vegetal (IMBIV), Consejo Nacional de Investigaciones Científicas y Técnicas (CONICET), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), Universidad Nacional de Córdoba (UNC), Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
- Facultad de Ciencias Exactas, Físicas y Naturales, Departamento de Química, Cátedra de Química Orgánica, Universidad Nacional de Córdoba, Av. Vélez Sarsfield 1611, Córdoba X5016GCA, Argentina
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The Symbiotic Fungus Leucoagaricus gongylophorus (Möller) Singer (Agaricales, Agaricaceae) as a Target Organism to Control Leaf-Cutting Ants. INSECTS 2022; 13:insects13040359. [PMID: 35447801 PMCID: PMC9029082 DOI: 10.3390/insects13040359] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 12/13/2021] [Revised: 03/19/2022] [Accepted: 04/01/2022] [Indexed: 02/04/2023]
Abstract
Simple Summary The most used approach to control leaf-cutting ants (which cause damage in agricultural areas) is the application of synthetic chemical compounds that directly affect these insects. But another approach is the use of natural substances that attack the symbiotic fungus responsible for many aspects of the survival of the nest. In this study, we discuss the natural substances already reported in the literature to have fungicidal activity and how they could be applicable as products for the control of leaf-cutting ants. Abstract Atta and Acromyrmex are the main genera of leaf-cutting ants present in North and South America, causing extensive damage to agroforestry. Control of the ants requires high handling costs with few effective methods available to decrease the losses. The symbiosis between the leaf-cutting ants and the fungus Leucoagaricus gongylophorus is essential for ant nest survival. Therefore, L. gongylophorus may be a key target in controlling leaf-cutting ants, since its reduction may cause an imbalance in the symbiosis necessary to maintain the nest. Among the options for natural fungal control, plant species are considered important sources of compounds belonging to several classes of natural products that show potential as antifungal agents. This review also presents studies that establish that the antagonist fungi from the Escovopsis and Trichoderma genera effectively reduce the development of L. gongylophorus. The development of nanostructured delivery systems, which have shown advantages over conventional formulations, is suggested for ant control; no commercial nanotechnology-based product has yet been developed, and this appears to be a new approach for future studies.
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Dong X, Sun L, Maker G, Ren Y, Yu X. Ozone Treatment Increases the Release of VOC from Barley, Which Modifies Seed Germination. JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY 2022; 70:3127-3135. [PMID: 35254823 DOI: 10.1021/acs.jafc.1c06812] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/14/2023]
Abstract
Ozone is widely used to control pests in grain and has an impact on seed germination. The germination process involves multiple secondary metabolites, such as volatile organic compounds (VOCs), which are altered under ozone treatment. Here, an optimized solid-phase microextraction coupled with gas chromatography-mass spectrometry was implemented to explore changes in VOCs from barley seeds under ozone treatment. The data demonstrated that barley released both a greater variety and quantity of VOCs under oxidative stress. The number of alcohols and hydrocarbons gradually decreased, whereas aldehydes and organic acids markedly increased with increasing ozone treatment time. Acetic acid was identified as a potential ozone stress-specific marker. Furthermore, the dosage-dependent function of acetic acid on the germination of barley was verified, namely, a low dosage of acetic acid increased the germination and vice versa. This study provided new insights into how barley responds to ozone treatment and highlighted the role of acetic acid in seed germination.
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Affiliation(s)
- Xue Dong
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
- College of Science, Health, Engineering and Education, Murdoch University, Perth 6150, Australia
- Medical, Molecular and Forensic Sciences, Murdoch University, Perth 6150, Australia
| | - Litao Sun
- College of Science, Health, Engineering and Education, Murdoch University, Perth 6150, Australia
- Tea Research Institute, Qingdao Agricultural University, Qingdao 266109, China
- Medical, Molecular and Forensic Sciences, Murdoch University, Perth 6150, Australia
| | - Garth Maker
- College of Science, Health, Engineering and Education, Murdoch University, Perth 6150, Australia
- Medical, Molecular and Forensic Sciences, Murdoch University, Perth 6150, Australia
| | - Yonglin Ren
- College of Science, Health, Engineering and Education, Murdoch University, Perth 6150, Australia
- Medical, Molecular and Forensic Sciences, Murdoch University, Perth 6150, Australia
| | - Xiangyang Yu
- Institute of Agricultural Resources and Environment, Jiangsu Academy of Agricultural Sciences, 50 Zhongling Street, Nanjing 210014, China
- College of Science, Health, Engineering and Education, Murdoch University, Perth 6150, Australia
- Medical, Molecular and Forensic Sciences, Murdoch University, Perth 6150, Australia
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Van Winkle T, Ponce M, Quellhorst H, Bruce A, Albin CE, Kim TN, Zhu KY, Morrison WR. Microbial Volatile Organic Compounds from Tempered and Incubated Grain Mediate Attraction by a Primary but Not Secondary Stored Product Insect Pest in Wheat. J Chem Ecol 2021; 48:27-40. [PMID: 34542783 PMCID: PMC8801404 DOI: 10.1007/s10886-021-01312-8] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2021] [Revised: 07/31/2021] [Accepted: 08/22/2021] [Indexed: 12/04/2022]
Abstract
There has been a dearth of research elucidating the behavioral effect of microbially-produced volatile organic compounds on insects in postharvest agriculture. Demonstrating attraction to MVOC’s by stored product insects would provide an additional source of unique behaviorally-relevant stimuli to protect postharvest commodities at food facilities. Here, we assessed the behavioral response of a primary (Rhyzopertha dominica) and secondary (Tribolium castaneum) grain pest to bouquets of volatiles produced by whole wheat that were untempered, or tempered to 12%, 15%, or 19% grain moisture and incubated for 9, 18, or 27 days. We hypothesized that MVOC’s may be more important for the secondary feeder because they signal that otherwise unusable, intact grains have become susceptible by weakening of the bran. However, contrary to our expectations, we found that the primary feeder, R. dominica, but not T. castaneum was attracted to MVOC’s in a wind tunnel experiment, and in a release-recapture assay using commercial traps baited with grain treatments. Increasing grain moisture resulted in elevated grain damage detected by near-infrared spectroscopy and resulted in small but significant differences in the blend of volatiles emitted by treatments detected by gas chromatography coupled with mass spectrometry (GC–MS). In sequencing the microbial community on the grain, we found a diversity of fungi, suggesting that an assemblage was responsible for emissions. We conclude that R. dominica is attracted to a broader suite of MVOC’s than T. castaneum, and that our work highlights the importance of understanding insect-microbe interactions in the postharvest agricultural supply chain.
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Affiliation(s)
- Taylor Van Winkle
- School of Planning, Design, and Construction, Michigan State University, East Lansing, MI, USA
| | - Marco Ponce
- Department of Entomology, Kansas State University, Manhattan, KS, 66506, USA
| | - Hannah Quellhorst
- Department of Entomology, Kansas State University, Manhattan, KS, 66506, USA
| | - Alexander Bruce
- USDA-ARS Center for Grain and Animal Health Research, Manhattan, KS, 66502, USA
| | - Chloe E Albin
- Department of Engineering, Kansas State University, Manhattan, KS, 66506, USA
| | - Tania N Kim
- Department of Entomology, Kansas State University, Manhattan, KS, 66506, USA
| | - Kun Yan Zhu
- Department of Entomology, Kansas State University, Manhattan, KS, 66506, USA
| | - William R Morrison
- USDA-ARS Center for Grain and Animal Health Research, Manhattan, KS, 66502, USA.
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Ponce MA, Kim TN, Morrison III WR. A Systematic Review of the Behavioral Responses by Stored-Product Arthropods to Individual or Blends of Microbially Produced Volatile Cues. INSECTS 2021; 12:391. [PMID: 33925242 PMCID: PMC8145595 DOI: 10.3390/insects12050391] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 03/31/2021] [Revised: 04/21/2021] [Accepted: 04/24/2021] [Indexed: 11/17/2022]
Abstract
Microbes are ubiquitous and play important ecological roles in a variety of habitats. While research has been largely focused on arthropods and microbes separately in the post-harvest supply chain, less attention has been paid to their interactions with each other. Up to this point, there has been no attempt to systematically describe the patterns of behavioral responses by stored-product insects to microbially produced volatile organic compounds (MVOCs). Thus, our aims were to evaluate whether stored-product arthropods were primarily and significantly attracted, repelled, or had a net neutral effect (e.g., unaffected or mixed) by MVOCs presented as (1) complex headspace blends or (2) single constituents and known mixtures. In total, we found 43 articles that contained 384 sets of tests with different combinations of methodology and/or qualitative findings, describing the behavioral responses of 24 stored-product arthropod species from two classes, four orders, and 14 families to 58 individual microbial compounds and the complex headspace blends from at least 78 microbial taxa. A total of five and four stored-product arthropod species were significantly attracted and repelled by MVOCs across odor sources, respectively, while 13 were unaffected or exhibited mixed effects. We summarize the biases in the literature, including that the majority of tests have occurred in the laboratory with a limited subset of methodology and has largely only assessed the preference of adult arthropods. Finally, we identify foundational hypotheses for the roles that MVOCs play for stored-product arthropods as well as gaps in research and future directions, while highlighting that the behavioral responses to MVOCs are complex, context-, and taxon-dependent, which warrants further investigation.
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Affiliation(s)
- Marco A. Ponce
- Department of Entomology, Kansas State University, 123 W. Waters Hall, 1603 Old Claflin Place, Manhattan, KS 66506, USA;
| | - Tania N. Kim
- Department of Entomology, Kansas State University, 123 W. Waters Hall, 1603 Old Claflin Place, Manhattan, KS 66506, USA;
| | - William R. Morrison III
- USDA, Agricultural Research Service, Center for Grain and Animal Health Research, 1515 College Ave., Manhattan, KS 66502, USA;
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Zhao Q, Qiu Y, Wang X, Gu Y, Zhao Y, Wang Y, Yue T, Yuan Y. Inhibitory Effects of Eurotium cristatum on Growth and Aflatoxin B 1 Biosynthesis in Aspergillus flavus. Front Microbiol 2020; 11:921. [PMID: 32477315 PMCID: PMC7242626 DOI: 10.3389/fmicb.2020.00921] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/09/2019] [Accepted: 04/17/2020] [Indexed: 12/20/2022] Open
Abstract
Probiotic strain Eurotium cristatum was isolated from Chinese Fuzhuan brick-tea and tested for its in vitro activity against aflatoxigenic Aspergillus flavus. Results indicated that E. cristatum can inhibit the radial growth of A. flavus. Furthermore, this inhibition might be caused by E. cristatum secondary metabolites. The ability of culture filtrate of strain E. cristatum against growth and aflatoxin B1 production by toxigenic A. flavus was evaluated in vitro. Meanwhile, the influence of filtrate on spore morphology of A. flavus was analyzed by scanning electron microscopy (SEM). Results demonstrated that both radial growth of A. flavus and aflatoxin B1 production were significantly weakened following increases in the E. cristatum culture filtrate concentration. In addition, SEM showed that the culture filtrate seriously damaged hyphae morphology. Gas chromatography mass spectrometry (GC/MS) analysis of the E. cristatum culture supernatant revealed the presence of multiple antifungal compounds. Real-time quantitative polymerase chain reaction (RT-qPCR) analysis showed that the expression of aflatoxin biosynthesis-related genes (aflD, aflQ, and aflS) were down-regulated. Importantly, this latter occurrence resulted in a reduction of the AflS/AflR ratio. Interestingly, cell-free supernatants of E. cristatum facilitated the effective degradation of aflatoxin B1. In addition, two degradation products of aflatoxin B1 lacking the toxic and carcinogenic lactone ring were identified. A toxicity study on the HepG2 cells showed that the degradation compounds were less toxic when compared with AFB1.
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Affiliation(s)
- Qiannan Zhao
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China
| | - Yue Qiu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China
| | - Xin Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China
| | - Yuanyuan Gu
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Yuzhu Zhao
- College of Food Science and Technology, Northwest University, Xi'an, China
| | - Yidi Wang
- College of Food Science and Engineering, Northwest A&F University, Yangling, China
| | - Tianli Yue
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China.,College of Food Science and Technology, Northwest University, Xi'an, China.,College of Enology, Northwest A&F University, Yangling, China
| | - Yahong Yuan
- College of Food Science and Engineering, Northwest A&F University, Yangling, China.,Laboratory of Quality & Safety Risk Assessment for Agro-products, Ministry of Agriculture, Yangling, China
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10
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Micalizzi EW, Mack JN, White GP, Avis TJ, Smith ML. Microbial inhibitors of the fungus Pseudogymnoascus destructans, the causal agent of white-nose syndrome in bats. PLoS One 2017. [PMID: 28632782 PMCID: PMC5478148 DOI: 10.1371/journal.pone.0179770] [Citation(s) in RCA: 22] [Impact Index Per Article: 3.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022] Open
Abstract
Pseudogymnoascus destructans, the fungus that causes white-nose syndrome in hibernating bats, has spread across eastern North America over the past decade and decimated bat populations. The saprotrophic growth of P. destructans may help to perpetuate the white-nose syndrome epidemic, and recent model predictions suggest that sufficiently reducing the environmental growth of P. destructans could help mitigate or prevent white-nose syndrome-associated bat colony collapse. In this study, we screened 301 microbes from diverse environmental samples for their ability to inhibit the growth of P. destructans. We identified 145 antagonistic isolates, 53 of which completely or nearly completely inhibited the growth of P. destructans in co-culture. Further analysis of our best antagonists indicated that these microbes have different modes of action and may have some specificity in inhibiting P. destructans. The results suggest that naturally-occurring microbes and/or their metabolites may be considered further as candidates to ameliorate bat colony collapse due to P. destructans.
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Affiliation(s)
- Emma W. Micalizzi
- Department of Biology, Carleton University, Ottawa, Ontario, Canada
- * E-mail:
| | - Jonathan N. Mack
- Department of Biology, Carleton University, Ottawa, Ontario, Canada
| | | | - Tyler J. Avis
- Department of Chemistry, Carleton University, Ottawa, Ontario, Canada
| | - Myron L. Smith
- Department of Biology, Carleton University, Ottawa, Ontario, Canada
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Affiliation(s)
- Taehyun Ji
- U.S. Department of Agriculture–Agricultural Research Service, Soft Wheat Quality Laboratory, 1680 Madison Avenue, Wooster, OH 44691, U.S.A
| | - Moonseok Kang
- U.S. Department of Agriculture–Agricultural Research Service, Soft Wheat Quality Laboratory, 1680 Madison Avenue, Wooster, OH 44691, U.S.A
- Present address: Rural Development Administration–National Institute of Crop Science, Jeon-Ju, South Korea
| | - Byung-Kee Baik
- U.S. Department of Agriculture–Agricultural Research Service, Soft Wheat Quality Laboratory, 1680 Madison Avenue, Wooster, OH 44691, U.S.A
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Goñi ML, Gañán NA, Herrera JM, Strumia MC, Andreatta AE, Martini RE. Supercritical CO2 iof LDPE films with terpene ketones as biopesticides against corn weevil (Sitophilus zeamais). J Supercrit Fluids 2017. [DOI: 10.1016/j.supflu.2016.11.017] [Citation(s) in RCA: 30] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Pizzolitto RP, Herrera JM, Zaio YP, Dambolena JS, Zunino MP, Gallucci MN, Zygadlo JA. Bioactivities of Ketones Terpenes: Antifungal Effect on F. verticillioides and Repellents to Control Insect Fungal Vector, S. zeamais. Microorganisms 2015; 3:851-65. [PMID: 27682121 PMCID: PMC5023262 DOI: 10.3390/microorganisms3040851] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/14/2015] [Revised: 09/25/2015] [Accepted: 11/02/2015] [Indexed: 01/11/2023] Open
Abstract
Maize is one the most important staple foods in the world. However, numerous pests, such as fungal pathogens, e.g., Fusarium verticillioides, and insects, such as Sitophlilus zeamais, attack maize grains during storage. Many F. verticillioides strains produce fumonisins, one of the most important mycotoxin that causes toxic effects on human and animal health. This situation is aggravated by the insect fungal vector, Sitophlilus zeamais, which contributes to the dispersal of fungal spores, and through feeding damage, provide entry points for fungal infections. The aim of this study was to evaluate in vitro bioassays, the antifungal activity on F. verticillioides M3125 and repellent effects against S. zeamais of ketone terpenes. In addition, we performed Quantitative structure-activity relationship (Q-SAR) studies between physico-chemical properties of ketone terpenes and the antifungal effect. Thymoquinone was the most active compound against F. verticillioides (Minimum Inhibitory Concentration, MIC: 0.87) affecting the lag phase and the growth rate showing a total inhibition of growth at concentration higher than 2 mM (p < 0.05). The Q-SAR model revealed that the antifungal activity of ketone compounds is related to the electronic descriptor, Pi energy. Thymoquinone showed a strong repellent effect (-77.8 ± 8.5, p < 0.001) against S. zeamais. These findings make an important contribution to the search for new compounds to control two stored pests of maize.
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Affiliation(s)
- Romina P Pizzolitto
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba-(UNC), Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), UNC, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
| | - Jimena M Herrera
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba-(UNC), Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), UNC, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
| | - Yesica P Zaio
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba-(UNC), Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), UNC, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
| | - Jose S Dambolena
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba-(UNC), Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), UNC, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
| | - Maria P Zunino
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba-(UNC), Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), UNC, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
| | - Mauro N Gallucci
- Centro de Investigaciones y Transferencia de Santiago Del Estero (CITSE-INBIONATEC) El Zanjón, ruta 9 Km. 1134, G4200AQF Santiago Del Estero, Argentina.
| | - Julio A Zygadlo
- Instituto Multidisciplinario de Biología Vegetal (IMBiV-CONICET), Universidad Nacional de Córdoba-(UNC), Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
- Instituto de Ciencia y Tecnología de los Alimentos (ICTA), Facultad de Ciencias Exactas, Físicas y Naturales (FCEFyN), UNC, Avenida Vélez Sarsfield 1611, X5016GCA Córdoba, Argentina.
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