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Chen J, Cai R, Tang L, Wang D, Lv R, Guo C. Antagonistic activity and mechanism of Bacillus subtilis CG-6 suppression of root rot and growth promotion in Alfalfa. Microb Pathog 2024; 190:106616. [PMID: 38492826 DOI: 10.1016/j.micpath.2024.106616] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/04/2023] [Revised: 02/27/2024] [Accepted: 03/10/2024] [Indexed: 03/18/2024]
Abstract
Root rot is a common disease, that severely affects the yield and quality of alfalfa. Biocontrol is widely used to control plant diseases caused by pathogenic fungi, however, biocontrol strains for alfalfa root rot are very limited. In this study, a Bacillus subtilis CG-6 strain with a significant biocontrol effect on alfalfa root rot was isolated. CG-6 secretes antibacterial enzymes and siderophore, phosphate solubilization and indoleacetic acid (IAA). The inhibition rate of strain CG-6 against Fusarium oxysporum was 87.33%, and it showed broad-spectrum antifungal activity. Inoculation with CG-6 significantly reduced the incidence of alfalfa root rot, the control effect of greenhouse cultivation reached 58.12%, and CG-6 treatment significantly increased alfalfa plant height, root length, fresh weight, and dry weight. The treatment with CG-6 significantly increased the levels of antioxidant enzymes (catalase, peroxidase, superoxide dismutase, and lipoxygenase) in alfalfa leaves by 15.52%-34.03%. Defensive enzymes (chitinase and β-1,3-glucanase) increased by 24.37% and 28.08%, respectively. The expression levels of regulatory enzyme genes (MsCAT, MsPOD, MsCu, Zn-SOD1, MsCu, Zn-SOD2, MsCu, Zn-SOD3, and MsLOX2) and systemic resistance genes (MsPR1, MsPDF1.2, and MsVSP2) increased by 0.50-2.85 fold, which were higher than those in the pathogen treatment group. Therefore, CG-6 could be used as a potential strain to develop biopesticides against alfalfa root rot.
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Affiliation(s)
- Jiaxin Chen
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin 150025, China
| | - Run Cai
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin 150025, China
| | - Lu Tang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin 150025, China
| | - Dan Wang
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin 150025, China
| | - Ruiwei Lv
- Science and Technology Building, Heilongjiang Guohong Environmental Co., Ltd., No. 600 of Chuangxin Third Road, Songbei Zone, Harbin 150029, China
| | - Changhong Guo
- Key Laboratory of Molecular Cytogenetics and Genetic Breeding of Heilongjiang Province, College of Life Science and Technology, Limin Development Zone, Harbin Normal University, No. 1 of Shida Road, Harbin 150025, China.
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Walaszczyk A, Jasińska A, Bernat P, Różalska S, Sas-Paszt L, Lisek A, Paraszkiewicz K. The Combined Effects of Azoxystrobin and the Biosurfactant-Producing Bacillus sp. Kol B3 against the Phytopathogenic Fungus Fusarium sambucinum IM 6525. Int J Mol Sci 2024; 25:4175. [PMID: 38673760 DOI: 10.3390/ijms25084175] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/29/2024] [Revised: 04/04/2024] [Accepted: 04/08/2024] [Indexed: 04/28/2024] Open
Abstract
This study aimed to evaluate how the combined presence of the synthetic fungicide azoxystrobin (AZ) and the biosurfactant-producing Bacillus sp. Kol B3 influences the growth of the phytopathogenic fungus Fusarium sambucinum IM 6525. The results showed a noticeable increase in antifungal effectiveness when biotic and abiotic agents were combined. This effect manifested across diverse parameters, including fungal growth inhibition, changes in hyphae morphology, fungal membrane permeability and levels of intracellular reactive oxygen species (ROS). In response to the presence of Fusarium and AZ in the culture, the bacteria changed the proportions of biosurfactants (surfactin and iturin) produced. The presence of both AZ and/or Fusarium resulted in an increase in iturin biosynthesis. Only in 72 h old bacterial-fungal co-culture a 20% removal of AZ was noted. In the fungal cultures (with and without the addition of the bacteria), the presence of an AZ metabolite named azoxystrobin free acid was detected in the 48th and 72nd hours of the process. The possible involvement of increased iturin and ROS content in antifungal activity of Bacillus sp. and AZ when used together are also discussed. Biosurfactants were analyzed by liquid chromatography with tandem mass spectrometry (LC-MS/MS). Microscopy techniques and biochemical assays were also used.
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Affiliation(s)
- Aleksandra Walaszczyk
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, Doctoral School of Exact and Natural Sciences, University of Lodz, 90-136 Lodz, Poland
| | - Anna Jasińska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-136 Lodz, Poland
| | - Przemysław Bernat
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-136 Lodz, Poland
| | - Sylwia Różalska
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-136 Lodz, Poland
| | - Lidia Sas-Paszt
- Department of Microbiology and Rhizosphere, The National Institute of Horticultural Research, 96-100 Skierniewice, Poland
| | - Anna Lisek
- Department of Microbiology and Rhizosphere, The National Institute of Horticultural Research, 96-100 Skierniewice, Poland
| | - Katarzyna Paraszkiewicz
- Department of Industrial Microbiology and Biotechnology, Faculty of Biology and Environmental Protection, University of Lodz, 90-136 Lodz, Poland
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Fanelli G, Kuzmanović L, Giovenali G, Tundo S, Mandalà G, Rinalducci S, Ceoloni C. Untargeted Metabolomics Reveals a Multi-Faceted Resistance Response to Fusarium Head Blight Mediated by the Thinopyrum elongatum Fhb7E Locus Transferred via Chromosome Engineering into Wheat. Cells 2023; 12:1113. [PMID: 37190021 PMCID: PMC10136595 DOI: 10.3390/cells12081113] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2023] [Revised: 04/04/2023] [Accepted: 04/04/2023] [Indexed: 05/17/2023] Open
Abstract
The Thinopyrum elongatum Fhb7E locus has been proven to confer outstanding resistance to Fusarium Head Blight (FHB) when transferred into wheat, minimizing yield loss and mycotoxin accumulation in grains. Despite their biological relevance and breeding implications, the molecular mechanisms underlying the resistant phenotype associated with Fhb7E have not been fully uncovered. To gain a broader understanding of processes involved in this complex plant-pathogen interaction, we analysed via untargeted metabolomics durum wheat (DW) rachises and grains upon spike inoculation with Fusarium graminearum (Fg) and water. The employment of DW near-isogenic recombinant lines carrying or lacking the Th. elongatum chromosome 7E region including Fhb7E on their 7AL arm, allowed clear-cut distinction between differentially accumulated disease-related metabolites. Besides confirming the rachis as key site of the main metabolic shift in plant response to FHB, and the upregulation of defence pathways (aromatic amino acid, phenylpropanoid, terpenoid) leading to antioxidants and lignin accumulation, novel insights were revealed. Fhb7E conferred constitutive and early-induced defence response, in which specific importance of polyamine biosynthesis, glutathione and vitamin B6 metabolisms, along with presence of multiple routes for deoxynivalenol detoxification, was highlighted. The results suggested Fhb7E to correspond to a compound locus, triggering a multi-faceted plant response to Fg, effectively limiting Fg growth and mycotoxin production.
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Affiliation(s)
- Giuseppina Fanelli
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy; (G.F.)
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Ljiljana Kuzmanović
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Gloria Giovenali
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Silvio Tundo
- Department of Land, Environment, Agriculture and Forestry (TESAF), University of Padova, 35020 Legnaro, Italy; (S.T.)
| | - Giulia Mandalà
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
| | - Sara Rinalducci
- Department of Ecological and Biological Sciences (DEB), University of Tuscia, 01100 Viterbo, Italy; (G.F.)
| | - Carla Ceoloni
- Department of Agriculture and Forest Sciences (DAFNE), University of Tuscia, 01100 Viterbo, Italy; (L.K.); (G.G.); (G.M.)
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Deshaies M, Lamari N, Ng CKY, Ward P, Doohan FM. The impact of chitosan on the early metabolomic response of wheat to infection by Fusarium graminearum. BMC Plant Biol 2022; 22:73. [PMID: 35183130 PMCID: PMC8857839 DOI: 10.1186/s12870-022-03451-w] [Citation(s) in RCA: 2] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/23/2021] [Accepted: 01/31/2022] [Indexed: 05/29/2023]
Abstract
BACKGROUND Chitosan has shown potential for the control of Fusarium head blight (FHB) disease caused by Fusarium graminearum. The objective of this study was to compare the effect of chitosan hydrochloride applied pre- or post-fungal inoculation on FHB and to better understand its' mode of action via an untargeted metabolomics study. RESULTS Chitosan inhibited fungal growth in vitro and, when sprayed on the susceptible wheat cultivar Remus 24 hours pre-inoculation with F. graminearum, it significantly reduced the number of infected spikelets at 7, 14 and 21 days post-inoculation. Chitosan pre-treatment also increased the average grain weight per head, the number of grains per head and the 1000-grain weight compared to the controls sprayed with water. No significant impact of chitosan on grain yield was observed when the plants were sprayed 24 hours post-inoculation with F. graminearum, even if it did result in a reduced number of infected spikelets at every time point. An untargeted metabolomic study using UHPLC-QTOF-MS on wheat spikes revealed that spraying the spikes with both chitosan and F. graminearum activated known FHB resistance pathways (e.g. jasmonic acid). Additionally, more metabolites were up- or down-regulated when both chitosan and F. graminearum spores were sprayed on the spikes (117), as compared with chitosan (51) or F. graminearum on their own (32). This included a terpene, a terpenoid and a liminoid previously associated with FHB resistance. CONCLUSIONS In this study we showed that chitosan hydrochloride inhibited the spore germination and hyphal development of F. graminearum in vitro, triggered wheat resistance against infection by F. graminearum when used as a pre-inoculant, and highlighted metabolites and pathways commonly and differentially affected by chitosan, the pathogen and both agents. This study provides insights into how chitosan might provide protection or stimulate wheat resistance to infection by F. graminearum. It also unveiled new putatively identified metabolites that had not been listed in previous FHB or chitosan-related metabolomic studies.
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Affiliation(s)
- Myriam Deshaies
- UCD School of Biology and Environmental Science, UCD Centre for Plant Science, and UCD Earth Institute, University College Dublin, O'Brien Centre for Science, Belfield, Dublin, Ireland
- Envirotech Innovative Products Ltd, NovaUCD, Belfield Innovation Park, Belfield, Dublin, Ireland
| | - Nadia Lamari
- UCD School of Biology and Environmental Science, UCD Centre for Plant Science, and UCD Earth Institute, University College Dublin, O'Brien Centre for Science, Belfield, Dublin, Ireland
- Philip Morris International, Quai Jeanrenaud 3, 2000, Neuchatel, Switzerland
| | - Carl K Y Ng
- UCD School of Biology and Environmental Science, UCD Centre for Plant Science, and UCD Earth Institute, University College Dublin, O'Brien Centre for Science, Belfield, Dublin, Ireland
| | - Patrick Ward
- Envirotech Innovative Products Ltd, NovaUCD, Belfield Innovation Park, Belfield, Dublin, Ireland
| | - Fiona M Doohan
- UCD School of Biology and Environmental Science, UCD Centre for Plant Science, and UCD Earth Institute, University College Dublin, O'Brien Centre for Science, Belfield, Dublin, Ireland.
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Zhang X, Li C, Xue B, Ji P, Li Y, Sun L, Wang S. Development of a Rapid Sporulation Method of Fusarium graminearum Using Liquid Cultivation. Plant Dis 2022; 106:34-38. [PMID: 34282928 DOI: 10.1094/pdis-05-21-0911-sr] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
Fusarium graminearum is an important fungus causing a variety of maize diseases, including stalk rot, ear rot, and sheath rot. However, conidia of F. graminearum are not easily obtained under normal culture conditions, which seriously affects the identification and pathogenicity assessment of the isolates and screening of resistance sources. This study was undertaken to develop and utilize a rapid sporulation technique of F. graminearum using liquid cultivation, which could meet the needs of various tests. The results show that the optimum conditions for sporulation of F. graminearum were as follows: culture medium, 0.154 mol/liter of saline; temperature, 28 to 30°C; incubation time, 96 h; initial pH, 9 to 10; illumination, continuous ultraviolet light; and shaking speed, 150 rpm. Using this culture method, conidial concentration of tested F. graminearum strains can reach >1.5 × 105 conidia/ml. Compared with the existing methods using mung bean and carboxylmethyl cellulose as matrix, saline is relatively inexpensive, and the culture process, relatively quick. Overall, this study provided a systematic, rapid, and simple method to obtain a large number of conidia of F. graminearum.
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Affiliation(s)
- Xue Zhang
- Agricultural College, Northeast Agricultural University, Harbin, Heilongjiang 150030, P. R. China
| | - Chunjie Li
- Key Laboratory of Soybean Molecular Design Breeding, Northeast Institute of Geography and Agroecology, Chinese Academy of Sciences, Harbin, Heilongjiang 150081, P. R. China
| | - Baiyan Xue
- Agricultural College, Northeast Agricultural University, Harbin, Heilongjiang 150030, P. R. China
| | - Pingsheng Ji
- Department of Plant Pathology, University of Georgia, Tifton, GA 31794, U.S.A
| | - Yonggang Li
- Agricultural College, Northeast Agricultural University, Harbin, Heilongjiang 150030, P. R. China
| | - Lei Sun
- Institute of Soil Fertilizer and Environment Resources, Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang 150086, P. R. China
| | - Shuang Wang
- Institute of Soil Fertilizer and Environment Resources, Heilongjiang Academy of Agricultural Sciences, Harbin, Heilongjiang 150086, P. R. China
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Huang M, Duan WG, Lin GS, Li BY. Synthesis, Antifungal Activity, 3D-QSAR, and Molecular Docking Study of Novel Menthol-Derived 1,2,4-Triazole-thioether Compounds. Molecules 2021; 26:6948. [PMID: 34834038 PMCID: PMC8618492 DOI: 10.3390/molecules26226948] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/24/2021] [Revised: 11/07/2021] [Accepted: 11/16/2021] [Indexed: 12/04/2022] Open
Abstract
A series of novel menthol derivatives containing 1,2,4-triazole-thioether moiety were designed, synthesized, characterized structurally, and evaluated biologically to explore more potent natural product-based antifungal agents. The bioassay results revealed that at 50 μg/mL, some of the target compounds exhibited good inhibitory activity against the tested fungi, especially against Physalospora piricola. Compounds 5b (R = o-CH3 Ph), 5i (R = o-Cl Ph), 5v (R = m,p-OCH3 Ph) and 5x (R = α-furyl) had inhibition rates of 93.3%, 79.4%, and 79.4%, respectively, against P. piricola, much better than that of the positive control chlorothalonil. Compounds 5v (R = m,p-OCH3 Ph) and 5g (R = o-Cl Ph) held inhibition rates of 82.4% and 86.5% against Cercospora arachidicola and Gibberella zeae, respectively, much better than that of the commercial fungicide chlorothalonil. Compound 5b (R = o-CH3 Ph) displayed antifungal activity of 90.5% and 83.8%, respectively, against Colleterichum orbicalare and Fusarium oxysporum f. sp. cucumerinum. Compounds 5m (R = o-I Ph) had inhibition rates of 88.6%, 80.0%, and 88.0%, respectively, against F. oxysporum f. sp. cucumerinu, Bipolaris maydis and C. orbiculare. Furthermore, compound 5b (R = o-CH3 Ph) showed the best and broad-spectrum antifungal activity against all the tested fungi. To design more effective antifungal compounds against P. piricola, 3D-QSAR analysis was performed using the CoMFA method, and a reasonable 3D-QSAR model (r2 = 0.991, q2 = 0.514) was established. The simulative binding pattern of the target compounds with cytochrome P450 14α-sterol demethylase (CYP51) was investigated by molecular docking.
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Affiliation(s)
- Mei Huang
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.H.); (B.-Y.L.)
- Guangxi Research Institute of Chemical Industry Co., Ltd., Nanning 530001, China
| | - Wen-Gui Duan
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.H.); (B.-Y.L.)
| | - Gui-Shan Lin
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.H.); (B.-Y.L.)
| | - Bao-Yu Li
- School of Chemistry and Chemical Engineering, Guangxi University, Nanning 530004, China; (M.H.); (B.-Y.L.)
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Purohit A, Ghosh S, Ganguly S, Negi MS, Tripathi SB, Chaudhuri RK, Chakraborti D. Comparative transcriptomic profiling of susceptible and resistant cultivars of pigeonpea demonstrates early molecular responses during Fusarium udum infection. Sci Rep 2021; 11:22319. [PMID: 34785701 PMCID: PMC8595609 DOI: 10.1038/s41598-021-01587-7] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/15/2021] [Accepted: 10/26/2021] [Indexed: 12/30/2022] Open
Abstract
Vascular wilt caused by Fusarium udum Butler is the most important disease of pigeonpea throughout the world. F. udum isolate MTCC 2204 (M1) inoculated pigeonpea plants of susceptible (ICP 2376) and resistant (ICP 8863) cultivars were taken at invasion stage of pathogenesis process for transcriptomic profiling to understand defense signaling reactions that interplay at early stage of this plant-pathogen encounter. Differential transcriptomic profiles were generated through cDNA-AFLP from M1 inoculated resistant and susceptible pigeonpea root tissues. Twenty five percent of transcript derived fragments (TDFs) were found to be pathogen induced. Among them 73 TDFs were re-amplified and sequenced. Homology search of the TDFs in available databases and thorough study of scientific literature identified several pathways, which could play crucial role in defense responses of the F. udum inoculated resistant plants. Some of the defense responsive pathways identified to be active during this interaction are, jasmonic acid and salicylic acid mediated defense responses, cell wall remodeling, vascular development and pattering, abscisic acid mediated responses, effector triggered immunity, and reactive oxygen species mediated signaling. This study identified important wilt responsive regulatory pathways in pigeonpea which will be helpful for further exploration of these resistant components for pigeonpea improvement.
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Affiliation(s)
- Arnab Purohit
- Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal, 700016, India
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Sanatan Ghosh
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India
| | - Shreeparna Ganguly
- Department of Biotechnology, St. Xavier's College (Autonomous), 30, Mother Teresa Sarani, Kolkata, West Bengal, 700016, India
| | - Madan Singh Negi
- Sustainable Agriculture Division, TERI, India Habitat Center Complex, Lodhi Road, New Delhi, 110003, India
| | - Shashi Bhushan Tripathi
- TERI-School of Advanced Studies, 10, Institutional Area, Vasant Kunj, New Delhi, 110070, India
| | | | - Dipankar Chakraborti
- Department of Genetics, University of Calcutta, 35, Ballygunge Circular Road, Kolkata, 700019, India.
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Yu C, Liu X, Zhang X, Zhang M, Gu Y, Ali Q, Mohamed MSR, Xu J, Shi J, Gao X, Wu H, Gu Q. Mycosubtilin Produced by Bacillus subtilis ATCC6633 Inhibits Growth and Mycotoxin Biosynthesis of Fusarium graminearum and Fusarium verticillioides. Toxins (Basel) 2021; 13:791. [PMID: 34822575 PMCID: PMC8620035 DOI: 10.3390/toxins13110791] [Citation(s) in RCA: 19] [Impact Index Per Article: 6.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/20/2021] [Revised: 10/18/2021] [Accepted: 11/01/2021] [Indexed: 11/17/2022] Open
Abstract
Fusarium graminearum and Fusarium verticillioides are fungal pathogens that cause diseases in cereal crops, such as Fusarium head blight (FHB), seedling blight, and stalk rot. They also produce a variety of mycotoxins that reduce crop yields and threaten human and animal health. Several strategies for controlling these diseases have been developed. However, due to a lack of resistant cultivars and the hazards of chemical fungicides, efforts are now focused on the biocontrol of plant diseases, which is a more sustainable and environmentally friendly approach. In the present study, the lipopeptide mycosubtilin purified from Bacillus subtilis ATCC6633 significantly suppressed the growth of F. graminearum PH-1 and F. verticillioides 7600 in vitro. Mycosubtilin caused the destruction and deformation of plasma membranes and cell walls in F. graminearum hyphae. Additionally, mycosubtilin inhibited conidial spore formation and germination of both fungi in a dose-dependent manner. In planta experiments demonstrated the ability of mycosubtilin to control the adverse effects caused by F. graminearum and F. verticillioides on wheat heads and maize kernels, respectively. Mycosubtilin significantly decreased the production of deoxynivalenol (DON) and B-series fumonisins (FB1, FB2 and FB3) in infected grains, with inhibition rates of 48.92, 48.48, 52.42, and 59.44%, respectively. The qRT-PCR analysis showed that mycosubtilin significantly downregulated genes involved in mycotoxin biosynthesis. In conclusion, mycosubtilin produced by B. subtilis ATCC6633 was shown to have potential as a biological agent to control plant diseases and Fusarium toxin contamination caused by F. graminearum and F. verticillioides.
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Affiliation(s)
- Chenjie Yu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - Xin Liu
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing 210014, China; (X.L.); (J.X.); (J.S.)
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xinyue Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - Mengxuan Zhang
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - Yiying Gu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - Qurban Ali
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - M. Sherif Ramzy Mohamed
- Department of Food Toxicology and Contaminant, National Research Centre of Egypt, Giza 12411, Egypt;
| | - Jianhong Xu
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing 210014, China; (X.L.); (J.X.); (J.S.)
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Jianrong Shi
- Institute of Food Safety and Nutrition, Jiangsu Academy of Agricultural Science, Nanjing 210014, China; (X.L.); (J.X.); (J.S.)
- School of Food and Biological Engineering, Jiangsu University, Zhenjiang 212013, China
| | - Xuewen Gao
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - Huijun Wu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
| | - Qin Gu
- Key Laboratory of Integrated Management of Crop Diseases and Pests, Department of Plant Pathology, College of Plant Protection, Nanjing Agricultural University, Nanjing 210095, China; (C.Y.); (X.Z.); (M.Z.); (Y.G.); (Q.A.); (X.G.); (H.W.)
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Omar HS, Abd El-Rahman SN, AlGhannam SM, Reyad NEHA, Sedeek MS. Antifungal Evaluation and Molecular Docking Studies of Olea europaea Leaf Extract, Thymus vulgaris and Boswellia carteri Essential Oil as Prospective Fungal Inhibitor Candidates. Molecules 2021; 26:molecules26206118. [PMID: 34684700 PMCID: PMC8539494 DOI: 10.3390/molecules26206118] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/28/2021] [Revised: 09/28/2021] [Accepted: 09/30/2021] [Indexed: 12/05/2022] Open
Abstract
Background: The present study investigated the antifungal activity and mode of action of four Olea europaea leaf extracts, Thymus vulgaris essential oil (EO), and Boswellia carteri EO against Fusarium oxysporum. Methods:Fusarium oxysporum lactucae was detected with the internal transcribed spacer (ITS) region. The chemical compositions of chloroform and dichloromethane extracts of O. europaea leaves and T. vulgaris EO were analyzed using GC-MS analysis. In addition, a molecular docking analysis was used to identify the expected ligands of these extracts against eleven F. oxysporum proteins. Results: The nucleotide sequence of the F. oxysporum lactucae isolate was deposited in GenBank with Accession No. MT249304.1. The T. vulgaris EO, chloroform, dichloromethane and ethanol efficiently inhibited the growth at concentrations of 75.5 and 37.75 mg/mL, whereas ethyl acetate, and B. carteri EO did not exhibit antifungal activity. The GC-MS analysis revealed that the major and most vital compounds of the T. vulgaris EO, chloroform, and dichloromethane were thymol, carvacrol, tetratriacontane, and palmitic acid. Moreover, molecular modeling revealed the activity of these compounds against F. oxysporum. Conclusions: Chloroform, dichloromethane and ethanol, olive leaf extract, and T. vulgaris EO showed a strong effect against F. oxysporum. Consequently, this represents an appropriate natural source of biological compounds for use in healthcare. In addition, homology modeling and docking analysis are the best analyses for clarifying the mechanisms of antifungal activity.
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Affiliation(s)
- Hanaa S. Omar
- Department of Genetics, Faculty of Agriculture, Cairo University, Giza 12613, Egypt
- GMO Laboratory, Faculty of Agriculture, Cairo University, Research Park, CURP, Giza 12613, Egypt
- Correspondence: (H.S.O.); (S.N.A.E.-R.)
| | - Soheir N. Abd El-Rahman
- Crops Technology Research Department, Food Technology Research Institute, Agricultural Research Center, Giza 12619, Egypt
- Correspondence: (H.S.O.); (S.N.A.E.-R.)
| | - Sheikha M. AlGhannam
- Department of Chemistry, College of Science, Imam Abdulrahman Bin Faisal University, P.O. Box 1982, Dammam 31441, Saudi Arabia;
| | - Nour El-Houda A. Reyad
- Plant Pathology Department, Faculty of Agriculture, Cairo University, Giza 12613, Egypt;
| | - Mohamed S. Sedeek
- Pharmacognosy Department, Faculty of Pharmacy, Cairo University, Giza 11562, Egypt;
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Yadav DR, Adhikari M, Kim SW, Kim HS, Lee YS. Suppression of Fusarium Wilt Caused by Fusarium oxysporum f. sp. lactucae and Growth Promotion on Lettuce Using Bacterial Isolates. J Microbiol Biotechnol 2021; 31:1241-1255. [PMID: 34373438 PMCID: PMC9705851 DOI: 10.4014/jmb.2104.04026] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2021] [Revised: 07/29/2021] [Accepted: 08/02/2021] [Indexed: 12/15/2022]
Abstract
This study was carried out to explore a non-chemical strategy for enhancing productivity by employing some antagonistic rhizobacteria. One hundred eighteen bacterial isolates were obtained from the rhizospheric zone of various crop fields of Gangwon-do, Korea, and screened for antifungal activity against Fusarium wilt (Fusarium oxysporum f. sp. lactucae) in lettuce crop under in vitro and in vivo conditions. In broth-based dual culture assay, fourteen bacterial isolates showed significant inhibition of mycelial growth of F. oxysporium f. sp. lactucae. All of the antagonistic isolates were further characterized for the antagonistic traits under in vitro conditions. The isolates were identified on the basis of biochemical characteristics and confirmed at their species level by 16S rRNA gene sequencing analysis. Arthrobacter sulfonivorans, Bacillus siamensis, Bacillus amyloliquefaciens, Pseudomonas proteolytica, four Paenibacillus peoriae strains, and Bacillus subtilis were identified from the biochemical characterization and 16S rRNA gene sequencing analysis. The isolates EN21 and EN23 showed significant decrease in disease severity on lettuce compared to infected control and other bacterial treatments under greenhouse conditions. Two bacterial isolates, EN4 and EN21, were evaluated to assess their disease reduction and growth promotion in lettuce in field conditions. The consortium of EN4 and EN21 showed significant enhancement of growth on lettuce by suppressing disease caused by F. oxysporum f. sp. lactucae respectively. This study clearly indicates that the promising isolates, EN4 (P. proteolytica) and EN21 (Bacillus siamensis), can be commercialized and used as biofertilizer and/or biopesticide for sustainable crop production.
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Affiliation(s)
- Dil Raj Yadav
- Department of Applied Plant Sciences, Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Mahesh Adhikari
- Department of Applied Plant Sciences, Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Sang Woo Kim
- Department of Applied Plant Sciences, Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Hyun Seung Kim
- Department of Applied Plant Sciences, Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
| | - Youn Su Lee
- Department of Applied Plant Sciences, Interdisciplinary Program in Smart Agriculture, Kangwon National University, Chuncheon 24341, Republic of Korea
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11
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Harčárová M, Čonková E, Proškovcová M, Váczi P, Marcinčáková D, Bujňák L. Comparison of antifungal activity of selected essential oils against Fusarium graminearum in vitro. Ann Agric Environ Med 2021; 28:414-418. [PMID: 34558263 DOI: 10.26444/aaem/137653] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/13/2023]
Abstract
INTRODUCTION Fusaria are microscopic filamentous fungi which are spread in soil, in various organic substrates, and include more than 80 phytopathogenic species which are predominantly hosted by cereals, fruits and vegetables. Many of these species, under certain conditions, are capable of synthesizing secondary metabolites, mycotoxins. At present, various substances are used for their elimination and one of the solutions appears to be essential oils. In the presented study, the antifungal activity of essential oils was researched in vitro. MATERIAL AND METHODS In this study, two standard fungal isolates Fusarium graminearum CCM F-683 and Fusarium graminearum CCM 8244 (Brno, Czech Republic) were used. The antifungal effect of 6 tested essential oils (Syzygium aromaticum, Origanum vulgare, Thymus vulgaris, Hyssopus officinalis , Ocimum basilicum, Myristica fragrans) was determined using the broth microdilution method, which allows reading of the MIC (minimum inhibitory concentration). According to the results obtained, the growth inhibition of Fusarium graminearum was determined by assay for the inhibition of radial growth of the mycelium. RESULTS The inhibitory effects of thymus, oregano, basil, myristica, hyssop and syzygium essential oil (EO) on mycelial growth of Fusarium graminearum CCM F-683 and CCM 8244 were investigated. The best antifungal activity against the both strains of Fusarium graminearum (37.4%; 40.7%) was demonstrated by Origanum vulgare EO at the concentration 100 µg/mL. Among the four tested oils, three (Syzygium aromaticum, Thymus vulgaris, Origanum vulgare) achieved the best inhibitory effect (100%) at concentrations 500 µg/mL and 1000 µg/mL. CONCLUSIONS In the protection of plants against pathogenic fungi, essential oils appear to be a suitable substitute for synthetic chemicals.
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Affiliation(s)
| | - Eva Čonková
- University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | | | - Peter Váczi
- University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Dana Marcinčáková
- University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
| | - Lukáš Bujňák
- University of Veterinary Medicine and Pharmacy, Košice, Slovak Republic
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12
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Zhou H, Xu Y, Ebel F, Jin C. Galactofuranose (Galf)-containing sugar chain contributes to the hyphal growth, conidiation and virulence of F. oxysporum f.sp. cucumerinum. PLoS One 2021; 16:e0250064. [PMID: 34329342 PMCID: PMC8323920 DOI: 10.1371/journal.pone.0250064] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/21/2021] [Accepted: 03/31/2021] [Indexed: 01/14/2023] Open
Abstract
The ascomycete fungus Fusarium oxysporum f.sp. cucumerinum causes vascular wilt diseases in cucumber. However, few genes related to morphogenesis and pathogenicity of this fungal pathogen have been functionally characterized. BLASTp searches of the Aspergillus fumigatus UgmA and galatofuranosyltransferases (Galf-transferases) sequences in the F. oxysporum genome identified two genes encoding putative UDP-galactopyranose mutase (UGM), ugmA and ugmB, and six genes encoding putative Galf-transferase homologs. In this study, the single and double mutants of the ugmA, ugmB and gfsB were obtained. The roles of UGMs and GfsB were investigated by analyzing the phenotypes of the mutants. Our results showed that deletion of the ugmA gene led to a reduced production of galactofuranose-containing sugar chains, reduced growth and impaired conidiation of F. oxysporum f.sp. cucumerinum. Most importantly, the ugmA deletion mutant lost the pathogenicity in cucumber plantlets. Although deletion of the ugmB gene did not cause any visible phenotype, deletion of both ugmA and ugmB genes caused more severe phenotypes as compared with the ΔugmA, suggesting that UgmA and UgmB are redundant and they can both contribute to synthesis of UDP-Galf. Furthermore, the ΔgfsB exhibited an attenuated virulence although no other phenotype was observed. Our results demonstrate that the galactofuranose (Galf) synthesis contributes to the cell wall integrity, germination, hyphal growth, conidiation and virulence in Fusarium oxysporum f.sp. cucumerinum and an ideal target for the development of new anti-Fusarium agents.
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Affiliation(s)
- Hui Zhou
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
| | - Yueqiang Xu
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
| | - Frank Ebel
- Institute for Infectious Diseases and Zoonoses, LMU, Munich, Germany
| | - Cheng Jin
- State Key Laboratory of Mycology, Institute of Microbiology, Chinese Academy of Sciences, Beijing, China
- University of Chinese Academy of Sciences, Beijing, China
- National Engineering Research Center for Non-food Bio-refinery, Guangxi Academy of Sciences, Nanning, China
- * E-mail:
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13
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Borrego-Muñoz P, Ospina F, Quiroga D. A Compendium of the Most Promising Synthesized Organic Compounds against Several Fusarium oxysporum Species: Synthesis, Antifungal Activity, and Perspectives. Molecules 2021; 26:3997. [PMID: 34208916 PMCID: PMC8271819 DOI: 10.3390/molecules26133997] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/31/2021] [Revised: 06/25/2021] [Accepted: 06/27/2021] [Indexed: 11/17/2022] Open
Abstract
Vascular wilt caused by F. oxysporum (FOX) is one of the main limitations of producing several agricultural products worldwide, causing economic losses between 40% and 100%. Various methods have been developed to control this phytopathogen, such as the cultural, biological, and chemical controls, the latter being the most widely used in the agricultural sector. The treatment of this fungus through systemic fungicides, although practical, brings problems because the agrochemical agents used have shown mutagenic effects on the fungus, increasing the pathogen's resistance. The design and the synthesis of novel synthetic antifungal agents used against FOX have been broadly studied in recent years. This review article presents a compendium of the synthetic methodologies during the last ten years as promissory, which can be used to afford novel and potential agrochemical agents. The revision is addressed from the structural core of the most active synthetic compounds against FOX. The synthetic methodologies implemented strategies based on cyclo condensation reactions, radical cyclization, electrocyclic closures, and carbon-carbon couplings by metal-organic catalysis. This revision contributes significantly to the organic chemistry, supplying novel alternatives for the use of more effective agrochemical agents against F. oxysporum.
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Affiliation(s)
| | | | - Diego Quiroga
- Bioorganic Chemistry Laboratory, Facultad de Ciencias Básicas y Aplicadas, Campus Nueva Granada, Universidad Militar, Nueva Granada, Cajicá 250247, Colombia; (P.B.-M.); (F.O.)
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14
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Zhou Z, Zhu Y, Tian Y, Yao JL, Bian S, Zhang H, Zhang R, Gao Q, Yan Z. MdPR4, a pathogenesis-related protein in apple, is involved in chitin recognition and resistance response to apple replant disease pathogens. J Plant Physiol 2021; 260:153390. [PMID: 33667937 DOI: 10.1016/j.jplph.2021.153390] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/13/2020] [Revised: 02/07/2021] [Accepted: 02/09/2021] [Indexed: 06/12/2023]
Abstract
To maximize breeding and exploitation of disease resistance traits for managing apple replant disease (ARD), it is of great importance to understand the mechanisms of apple root resistance. Currently, little is known about the functions of the specific genes that confer resistance traits in apple root. In this study, molecular, biochemical, and genetic approaches allowed an in-depth understanding of the role of the MdPR4 gene in the defense response of apple root. The MdPR4 encoding gene showed upregulation following ARD pathogen inoculation in our previous transcriptome data. Subcellular localization analyses revealed that MdPR4 is localized on the plasma membrane, endoplasmic reticulum, and apoplast, which is mainly determined by its signal peptide. Molecular docking analysis between MdPR4 protein with chitin molecule and in vitro MdPR4 chitin affinity assay proved its chitin-binding ability, which provided evidence for its role in chitin-mediated immune responses. Purified MdPR4 protein and MdPR4 overexpressed apple callus inhibited spore germination and mycelial growth of ARD-related Fusarium spp. pathogens. These data support the conclusion that MdPR4 is a chitin-binding protein in apple vegetative tissues that may play an important role in defense activation in response to ARD pathogen infection.
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Affiliation(s)
- Zhe Zhou
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China
| | - Yanmin Zhu
- United States Department of Agriculture, Agricultural Research Service, Tree Fruit Research Laboratory, Wenatchee, WA 98801, USA
| | - Yi Tian
- National Agricultural Engineering Center for North Mountain Region of the Ministry of Science and Technology, Mountainous Area Research Institute of Hebei Province, Hebei Agricultural University, Baoding, Hebei, 071001, China
| | - Jia-Long Yao
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China; The New Zealand Institute for Plant & Food Research Limited, Auckland, New Zealand
| | - Shuxun Bian
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China
| | - Hengtao Zhang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China
| | - Ruiping Zhang
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China
| | - Qiming Gao
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China
| | - Zhenli Yan
- Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou, Henan 450000, China.
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15
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Baetsen-Young A, Chen H, Shiu SH, Day B. Contrasting transcriptional responses to Fusarium virguliforme colonization in symptomatic and asymptomatic hosts. Plant Cell 2021; 33:224-247. [PMID: 33681966 PMCID: PMC8136916 DOI: 10.1093/plcell/koaa021] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/01/2020] [Accepted: 11/06/2020] [Indexed: 06/12/2023]
Abstract
The broad host range of Fusarium virguliforme represents a unique comparative system to identify and define differentially induced responses between an asymptomatic monocot host, maize (Zea mays), and a symptomatic eudicot host, soybean (Glycine max). Using a temporal, comparative transcriptome-based approach, we observed that early gene expression profiles of root tissue from infected maize suggest that pathogen tolerance coincides with the rapid induction of senescence dampening transcriptional regulators, including ANACs (Arabidopsis thaliana NAM/ATAF/CUC protein) and Ethylene-Responsive Factors. In contrast, the expression of senescence-associated processes in soybean was coincident with the appearance of disease symptom development, suggesting pathogen-induced senescence as a key pathway driving pathogen susceptibility in soybean. Based on the analyses described herein, we posit that root senescence is a primary contributing factor underlying colonization and disease progression in symptomatic versus asymptomatic host-fungal interactions. This process also supports the lifestyle and virulence of F. virguliforme during biotrophy to necrotrophy transitions. Further support for this hypothesis lies in comprehensive co-expression and comparative transcriptome analyses, and in total, supports the emerging concept of necrotrophy-activated senescence. We propose that F. virguliforme conditions an environment within symptomatic hosts, which favors susceptibility through transcriptomic reprogramming, and as described herein, the induction of pathways associated with senescence during the necrotrophic stage of fungal development.
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Affiliation(s)
- Amy Baetsen-Young
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Huan Chen
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
- Graduate Program in Genetics and Genome Sciences, Michigan State University, East Lansing, MI 48824, USA
- Graduate Program in Molecular Plant Sciences, Michigan State University, East Lansing, MI 48824, USA
| | - Shin-Han Shiu
- Graduate Program in Genetics and Genome Sciences, Michigan State University, East Lansing, MI 48824, USA
- Graduate Program in Molecular Plant Sciences, Michigan State University, East Lansing, MI 48824, USA
- Department of Plant Biology, Michigan State University, East Lansing, MI 48824, USA
- Department of Computational Mathematics, Science, and Engineering, Michigan State University, East Lansing, MI 48824, USA
| | - Brad Day
- Department of Plant, Soil and Microbial Sciences, Michigan State University, East Lansing, MI 48824, USA
- Plant Resilience Institute, Michigan State University, East Lansing, MI 48824, USA
- Graduate Program in Genetics and Genome Sciences, Michigan State University, East Lansing, MI 48824, USA
- Graduate Program in Molecular Plant Sciences, Michigan State University, East Lansing, MI 48824, USA
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16
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Pang Y, Yang J, Chen X, Jia Y, Li T, Jin J, Liu H, Jiang L, Hao Y, Zhang H, Xie Y. An Antifungal Chitosanase from Bacillus subtilis SH21. Molecules 2021; 26:molecules26071863. [PMID: 33806149 PMCID: PMC8036696 DOI: 10.3390/molecules26071863] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/01/2021] [Revised: 03/18/2021] [Accepted: 03/22/2021] [Indexed: 11/16/2022] Open
Abstract
Bacillus subtilis SH21 was observed to produce an antifungal protein that inhibited the growth of F. solani. To purify this protein, ammonium sulfate precipitation, gel filtration chromatography, and ion-exchange chromatography were used. The purity of the purified product was 91.33% according to high-performance liquid chromatography results. Sodium dodecyl sulfate–polyacrylamide gel electrophoresis and liquid chromatography–tandem mass spectrometry (LC–MS/MS) analysis revealed that the molecular weight of the protein is 30.72 kDa. The results of the LC–MS/MS analysis and a subsequent sequence-database search indicated that this protein was a chitosanase, and thus, we named it chitosanase SH21. Scanning and transmission electron microscopy revealed that chitosanase SH21 appeared to inhibit the growth of F. solani by causing hyphal ablation, distortion, or abnormalities, and cell-wall depression. The minimum inhibitory concentration of chitosanase SH21 against F. solani was 68 µg/mL. Subsequently, the corresponding gene was cloned and sequenced, and sequence analysis indicated an open reading frame of 831 bp. The predicted secondary structure indicated that chitosanase SH21 has a typical a-helix from the glycoside hydrolase (GH) 46 family. The tertiary structure shared 40% similarity with that of Streptomyces sp. N174. This study provides a theoretical basis for a topical cream against fungal infections in agriculture and a selection marker on fungi.
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Affiliation(s)
- Yuanxiang Pang
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Jianjun Yang
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Xinyue Chen
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Yu Jia
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Tong Li
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Junhua Jin
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Hui Liu
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Linshu Jiang
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
| | - Yanling Hao
- Key Laboratory of Functional Dairy Science of Beijing and Chinese Ministry of Education, College of Food Science and Nutritional Engineering, China Agricultural University, Beijing 100083, China;
| | - Hongxing Zhang
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
- Correspondence: (H.Z.); (Y.X.)
| | - Yuanhong Xie
- Key Laboratory of Agricultural Product Detection and Control of Spoilage Organisms and Pesticides, Beijing Laboratory for Food Quality and Safety, Beijing Engineering Laboratory of Probiotics Key Technology Development, Beijing Engineering Technology Research Center of Food Safety Immune Rapid Detection, Food Science and Engineering College, Beijing University of Agriculture, Beijing 102206, China; (Y.P.); (J.Y.); (X.C.); (Y.J.); (T.L.); (J.J.); (H.L.); (L.J.)
- Correspondence: (H.Z.); (Y.X.)
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Riahi I, Pérez-Vendrell AM, Ramos AJ, Brufau J, Esteve-Garcia E, Schulthess J, Marquis V. Biomarkers of Deoxynivalenol Toxicity in Chickens with Special Emphasis on Metabolic and Welfare Parameters. Toxins (Basel) 2021; 13:217. [PMID: 33803037 PMCID: PMC8002947 DOI: 10.3390/toxins13030217] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/17/2021] [Revised: 03/12/2021] [Accepted: 03/14/2021] [Indexed: 12/12/2022] Open
Abstract
Deoxynivalenol (DON), a trichothecene mycotoxin produced by Fusarium species, is the most widespread mycotoxin in poultry feed worldwide. Long term-exposure from low to moderate DON concentrations can produce alteration in growth performance and impairment of the health status of birds. To evaluate the efficacy of mycotoxin-detoxifying agent alleviating the toxic effects of DON, the most relevant biomarkers of toxicity of DON in chickens should be firstly determined. The specific biomarker of exposure of DON in chickens is DON-3 sulphate found in different biological matrices (plasma and excreta). Regarding the nonspecific biomarkers called also biomarkers of effect, the most relevant ones are the impairment of the productive parameters, the intestinal morphology (reduction of villus height) and the enlargement of the gizzard. Moreover, the biomarkers of effect related to physiology (decrease of blood proteins, triglycerides, hemoglobin, erythrocytes, and lymphocytes and the increase of alanine transaminase (ALT)), immunity (response to common vaccines and release of some proinflammatory cytokines) and welfare status of the birds (such as the increase of Thiobarbituric acid reactive substances (TBARS) and the stress index), has been reported. This review highlights the available information regarding both types of biomarkers of DON toxicity in chickens.
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Affiliation(s)
- Insaf Riahi
- Animal Nutrition Department, Institute of Agrifood Research and Technology (IRTA Mas Bové), 43120 Constanti, Spain; (A.M.P.-V.); (J.B.); (E.E.-G.)
| | - Anna Maria Pérez-Vendrell
- Animal Nutrition Department, Institute of Agrifood Research and Technology (IRTA Mas Bové), 43120 Constanti, Spain; (A.M.P.-V.); (J.B.); (E.E.-G.)
| | - Antonio J. Ramos
- Applied Mycology Unit, Food Technology Department, University of Lleida, UTPV-XaRTA, Agrotecnio, Av. Rovira Roure 191, 25198 Lleida, Spain;
| | - Joaquim Brufau
- Animal Nutrition Department, Institute of Agrifood Research and Technology (IRTA Mas Bové), 43120 Constanti, Spain; (A.M.P.-V.); (J.B.); (E.E.-G.)
| | - Enric Esteve-Garcia
- Animal Nutrition Department, Institute of Agrifood Research and Technology (IRTA Mas Bové), 43120 Constanti, Spain; (A.M.P.-V.); (J.B.); (E.E.-G.)
| | - Julie Schulthess
- Phileo by Lesaffre, 137 Rue Gabriel Péri, 59700 Marcq en Baroeul, France; (J.S.); (V.M.)
| | - Virginie Marquis
- Phileo by Lesaffre, 137 Rue Gabriel Péri, 59700 Marcq en Baroeul, France; (J.S.); (V.M.)
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Roucou A, Bergez C, Méléard B, Orlando B. A Fumonisin Prevention Tool for Targeting and Ranking Agroclimatic Conditions Favoring Exposure in French Maize-Growing Areas. Toxins (Basel) 2021; 13:214. [PMID: 33809408 PMCID: PMC8001851 DOI: 10.3390/toxins13030214] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/18/2021] [Revised: 03/05/2021] [Accepted: 03/10/2021] [Indexed: 11/28/2022] Open
Abstract
The levels of fumonisins (FUMO)-mycotoxins produced by Fusarium verticillioides-in maize for food and feed are subject to European Union regulations. Compliance with the regulations requires the targeting of, among others, the agroclimatic factors influencing fungal contamination and FUMO production. Arvalis-Institut du végétal has created a national, multiyear database for maize, based on field survey data collected since 2003. This database contains information about agricultural practices, climatic conditions and FUMO concentrations at harvest for 738 maize fields distributed throughout French maize-growing regions. A linear mixed model approach highlights the presence of borers and the use of a late variety, high temperatures in July and October, and a water deficit during the maize cycle as creating conditions favoring maize contamination with Fusarium verticillioides. It is thus possible to target a combination of risk factors, consisting of this climatic sequence associated with agricultural practices of interest. The effects of the various possible agroclimatic combinations can be compared, grouped and classified as promoting very low to high FUMO concentrations, possibly exceeding the regulatory threshold. These findings should facilitate the creation of a national, informative and easy-to-use prevention tool for producers and agricultural cooperatives to manage the sanitary quality of their harvest.
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Affiliation(s)
- Agathe Roucou
- Arvalis—Institut du Végétal, Station Expérimentale, 91720 Boigneville, France; (C.B.); (B.M.); (B.O.)
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Bakhtiyarifar M, Enayatizamir N, Mehdi Khanlou K. Biochemical and molecular investigation of non-rhizobial endophytic bacteria as potential biofertilisers. Arch Microbiol 2021; 203:513-521. [PMID: 32965526 DOI: 10.1007/s00203-020-02038-z] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2020] [Revised: 08/29/2020] [Accepted: 09/12/2020] [Indexed: 11/29/2022]
Abstract
This study was performed to isolate non-rhizobial endophytic bacteria from the root nodules of Glycine max (soybean), Vigna radiata (mung bean) and Vigna unguiculata (cowpea). The bacteria were characterized for plant growth promoting properties such as indole acetic acid production, phosphate and zinc solubilisation, nitrogen fixation and hydrogen cyanide production. Phylogenetic identification was performed using the Neighbour-Joining method on16S rRNA gene sequences. The impact of salt tolerant isolates on some properties of wheat cv. Chamran was evaluated by a completely randomised factorial design. Nine isolates having some characteristics related to plant growth promotion were identified as Staphylococcus hominis 7E, Streptomyces sp. 11E, Bacillus sp. 13E, Acinetobacter sp. 19E, from mung bean, Bacillus endophyticus 1E from cowpea, Staphylococcus hominis 9E, Bacillus endophyticus 14E, Brevundimonas sp. 16E and Kocuria sp. 26E from soybean nodules. Isolates 7E and 19E caused maximum growth inhibition of Fusarium on PDA plate. All isolates were able to grow at salinity levels of mixtures containing up to 400 mM of NaCl, CaCl2 and MgCl2, but their growth was inhibited by increasing salinity level. Only the growth of isolate 14E increased at three levels of salinity compared with control. Some isolates, i.e. 7E, 14E, 19E and 26E had higher colony diameter at 45 °C after 48 h of incubation compared to the growth at 30 and 40 °C. Inoculation of soil with isolate 1E and isolate 26E caused to ameliorate salinity stress in wheat and increased the weight of 1000-grains as compared with non-inoculated treatments.
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Affiliation(s)
- Marzieh Bakhtiyarifar
- Soil Science & Engineering Department, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
| | - Naeimeh Enayatizamir
- Soil Science & Engineering Department, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran.
| | - Khosro Mehdi Khanlou
- Production Engineering & Plant Genetics Department, Faculty of Agriculture, Shahid Chamran University of Ahvaz, Ahvaz, Iran
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20
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PINEDA-SUAZO DAISY, MONTERO-VARGAS JOSAPHATMIGUEL, ORDAZ-ORTIZ JOSÉJUAN, VÁZQUEZ-MARRUFO GERARDO. Growth Inhibition of Phytopathogenic Fungi and Oomycetes by Basidiomycete Irpex lacteus and Identification of its Antimicrobial Extracellular Metabolites. Pol J Microbiol 2021; 70:131-136. [PMID: 33815534 PMCID: PMC8008764 DOI: 10.33073/pjm-2021-014] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/18/2020] [Revised: 02/17/2021] [Accepted: 02/23/2021] [Indexed: 12/01/2022] Open
Abstract
In dual culture confrontation assays, basidiomycete Irpex lacteus efficiently antagonized Fusarium spp., Colletotrichum spp., and Phytophthora spp. phytopathogenic strains, with growth inhibition percentages between 16.7-46.3%. Antibiosis assays evaluating the inhibitory effect of soluble extracellular metabolites indicated I. lacteus strain inhibited phytopathogens growth between 32.0-86.7%. Metabolites in the extracellular broth filtrate, identified by UPLC-QTOF mass spectrometer, included nine terpenes, two aldehydes, and derivatives of a polyketide, a quinazoline, and a xanthone, several of which had antifungal activity. I. lacteus strain and its extracellular metabolites might be valuable tools for phytopathogenic fungi and oomycete biocontrol of agricultural relevance.
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Affiliation(s)
- DAISY PINEDA-SUAZO
- Centro Multidisciplinario de Estudios en Biotecnología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
| | | | | | - GERARDO VÁZQUEZ-MARRUFO
- Centro Multidisciplinario de Estudios en Biotecnología, Facultad de Medicina Veterinaria y Zootecnia, Universidad Michoacana de San Nicolás de Hidalgo, Morelia, Michoacán, Mexico
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21
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Li C, Fan S, Wen Y, Tan Z, Liu C. Enantioselective Effect of Flutriafol on Growth, Deoxynivalenol Production, and TRI Gene Transcript Levels in Fusarium graminearum. J Agric Food Chem 2021; 69:1684-1692. [PMID: 33522237 DOI: 10.1021/acs.jafc.0c06800] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
In recent years, deoxynivalenol (DON) has frequently been detected in wheat grains and their products. The enantioselective impact of flutriafol on the growth and DON biosynthesis of Fusarium graminearum was investigated in relation to water activity (αw, 0.97 and 0.99) and temperature (20, 25, and 30 °C) on the wheat-based medium. R-(-)-flutriafol exhibited higher bioactivity than S-(+)-flutriafol and Rac-flutriafol under the above conditions. Flutriafol enantiomers reduced or stimulated DON biosynthesis depending on αw. DON levels were negligible after 14 or 7 days of incubation times under 0.97 and 0.99 aw, respectively. Quantitative real-time polymerase chain reaction (qRT-PCR) analyses showed that the expression levels of trichothecene biosynthetic (TRI) genes of F. graminearum under 0.97 aw were significantly higher than those under 0.99 aw. In addition, R-(-)-flutriafol can induce more TRI gene expression than S-(+)-flutriafol. Taken together, this study indicated that aw and temperature play important roles in regulating DON biosynthesis in F. graminearum with flutriafol enantiomers.
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Affiliation(s)
- Chaofeng Li
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou, Guangdong Province 510642, China
| | - Shuai Fan
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou, Guangdong Province 510642, China
| | - Yan Wen
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou, Guangdong Province 510642, China
| | - Zhenchao Tan
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou, Guangdong Province 510642, China
| | - Chenglan Liu
- Key Laboratory of Natural Pesticide and Chemical Biology, Ministry of Agriculture & Key Laboratory of Bio-Pesticide Innovation and Application of Guangdong Province, South China Agricultural University, Wushan Road 483, Tianhe District, Guangzhou, Guangdong Province 510642, China
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22
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Chen YJ, Liu H, Zhang SY, Li H, Ma KY, Liu YQ, Yin XD, Zhou R, Yan YF, Wang RX, He YH, Chu QR, Tang C. Design, Synthesis, and Antifungal Evaluation of Cryptolepine Derivatives against Phytopathogenic Fungi. J Agric Food Chem 2021; 69:1259-1271. [PMID: 33496176 DOI: 10.1021/acs.jafc.0c06480] [Citation(s) in RCA: 26] [Impact Index Per Article: 8.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Inspired by the widely antiphytopathogenic application of diversified derivatives from natural sources, cryptolepine and its derivatives were subsequently designed, synthesized, and evaluated for their antifungal activities against four agriculturally important fungi Rhizoctonia solani, Botrytis cinerea, Fusarium graminearum, and Sclerotinia sclerotiorum. The results obtained from in vitro assay indicated that compounds a1-a24 showed great fungicidal property against B. cinerea (EC50 < 4 μg/mL); especially, a3 presented significantly prominent inhibitory activity with an EC50 of 0.027 μg/mL. In the pursuit of further expanding the antifungal spectrum of cryptolepine, ring-opened compound f1 produced better activity with an EC50 of 3.632 μg/mL against R. solani and an EC50 of 5.599 μg/mL against F. graminearum. Furthermore, a3 was selected to be a candidate to investigate its preliminary antifungal mechanism to B. cinerea, revealing that not only spore germination was effectively inhibited and the normal physiological structure of mycelium was severely undermined but also detrimental reactive oxygen was obviously accumulated and the normal function of the nucleus was fairly disordered. Besides, in vivo curative experiment against B. cinerea found that the therapeutic action of a3 was comparable to that of the positive control azoxystrobin. These results suggested that compound a3 could be regarded as a novel and promising agent against B. cinerea for its valuable potency.
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Affiliation(s)
- Yong-Jia Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Hua Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Shao-Yong Zhang
- Key Laboratory of Vector Biology and Pathogen Control of Zhejiang Province, College of Life Science, Huzhou University, Huzhou 313000, China
| | - Hu Li
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Kun-Yuan Ma
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiao-Dan Yin
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Rui Zhou
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yin-Fang Yan
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ren-Xuan Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Hui He
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Qing-Ru Chu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Chen Tang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
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23
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Deng RX, Zhang Z, Li HL, Wang W, Hu HB, Zhang XH. Identification of a Novel Bioactive Phenazine Derivative and Regulation of phoP on Its Production in Streptomyces lomondensis S015. J Agric Food Chem 2021; 69:974-981. [PMID: 33443412 DOI: 10.1021/acs.jafc.0c06498] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Natural phenazines are a class of multifunctional secondary metabolites of bacteria that play an important role in the biocontrol of plant pathogens. In this paper, a novel bioactive phenazine derivative was isolated from Streptomyces lomondensis S015 through silica gel chromatography and preparative high-performance liquid chromatography (HPLC). The structure was identified as 1-carboxyl-6-formyl-4,7,9-trihydroxy-phenazine (CFTHP) by NMR spectroscopy in combination with ultraperformance liquid chromatography & mass spectrometry (UPLC-MS). CFTHP could inhibit Pythium ultimum, Rhizoctonia solani, Septoria steviae, and Fusarium oxysporum f. sp. niveum with minimal inhibitory concentration (MIC) values of 16, 32, 16, and 16 μg/mL, respectively. A global regulatory gene phoP could positively regulate CFTHP biosynthesis since its production was 3.0-fold enhanced by phoP overexpression and inhibited by phoP deletion in Streptomyces lomondensis S015. These studies illustrated the potential of CFTHP as a promising biopesticide and provided a reference for phenazine production improvement.
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Affiliation(s)
- Ru-Xiang Deng
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Zhuo Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hui-Ling Li
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Wei Wang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Hong-Bo Hu
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
- National Experimental Teaching Center for Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
| | - Xue-Hong Zhang
- State Key Laboratory of Microbial Metabolism, School of Life Sciences and Biotechnology, Shanghai Jiao Tong University, Shanghai 200240, China
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24
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Buaban K, Phutdhawong W, Taechowisan T, Phutdhawong WS. Synthesis and Investigation of Tetrahydro-β-carboline Derivatives as Inhibitors of Plant Pathogenic Fungi. Molecules 2021; 26:molecules26010207. [PMID: 33401587 PMCID: PMC7796172 DOI: 10.3390/molecules26010207] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/24/2020] [Revised: 12/23/2020] [Accepted: 12/30/2020] [Indexed: 11/17/2022] Open
Abstract
A series of tetrahydro-ß-carbolines substituted with an alkyl or acyl side chain was synthesized and screened for its antifungal activity against plant pathogenic fungi (Bipolaris oryzae, Curvularia lunata, Fusarium semitectum, and Fusarium fujikuroi). The structure activity relationship revealed that the substituent at the piperidine nitrogen plays an important role for increasing antifungal activities. In this series, 2-octyl-2,3,4,9-tetrahydro-1H-pyrido[3,4-b]indole (3g) displayed potent antifungal activities with a minimum inhibitory concentration of 0.1 μg/mL, including good inhibitory activity to the radial growth of fungus at a concentration of 100 μg/mL compared to amphotericin B.
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Affiliation(s)
- Koonchira Buaban
- Department of Chemistry, Faculty of Science, Silpakorn University, Nakhon Pathom 73000, Thailand;
| | - Weerachai Phutdhawong
- Department of Science, Faculty of Liberal Arts and Science, Kamphaeng Sean Campus, Kasetsart University, Nakhon Pathom 73140, Thailand;
| | - Thongchai Taechowisan
- Department of Microbiology, Faculty of Science, Silpakorn University, Nakhon Pathom 73000, Thailand;
| | - Waya S. Phutdhawong
- Department of Chemistry, Faculty of Science, Silpakorn University, Nakhon Pathom 73000, Thailand;
- Correspondence:
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25
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Topi D, Babič J, Pavšič-Vrtač K, Tavčar-Kalcher G, Jakovac-Strajn B. Incidence of Fusarium Mycotoxins in Wheat and Maize from Albania. Molecules 2020; 26:E172. [PMID: 33396539 PMCID: PMC7796429 DOI: 10.3390/molecules26010172] [Citation(s) in RCA: 17] [Impact Index Per Article: 4.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2020] [Revised: 12/24/2020] [Accepted: 12/28/2020] [Indexed: 02/05/2023] Open
Abstract
In this study, ten Fusarium toxins were analysed in wheat and maize commodities from Albania. In total, 71 samples of wheat and 45 samples of maize were collected from different producing regions. The analytical procedure consisted of a simple one-step sample extraction followed by the determination of toxins using liquid chromatography coupled with tandem mass spectrometry. Fusarium toxins were found in 23% of the analysed wheat samples and in 78% of maize samples. In maize samples, most often fumonisins B1 (FB1) and B2 (FB2) were found. They were present in 76% of samples. They were detected in all positive samples except in one with concentrations ranging from 59.9 to 16,970 μg/kg. The sum of FB1 and FB2 exceeded the EU maximum permitted level (4000 μg/kg) in 31% of maize samples. In wheat samples, the only detected Fusarium mycotoxin was deoxynivalenol (DON), present in 23% of samples. In one sample with the concentration of 1916 μg/kg, the EU maximum permitted level (1250 μg/kg) was exceeded. This is the first report on the presence of Fusarium toxins in wheat and maize grains cultivated in Albania.
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Affiliation(s)
- Dritan Topi
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000 Ljubljana, Slovenia; (D.T.); (J.B.); (K.P.-V.); (B.J.-S.)
- Department of Chemistry, Faculty of Natural Sciences, University of Tirana, Boulevard Zogu 1, 25, 1016 Tirana, Albania
| | - Janja Babič
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000 Ljubljana, Slovenia; (D.T.); (J.B.); (K.P.-V.); (B.J.-S.)
| | - Katarina Pavšič-Vrtač
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000 Ljubljana, Slovenia; (D.T.); (J.B.); (K.P.-V.); (B.J.-S.)
| | - Gabrijela Tavčar-Kalcher
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000 Ljubljana, Slovenia; (D.T.); (J.B.); (K.P.-V.); (B.J.-S.)
| | - Breda Jakovac-Strajn
- Institute of Food Safety, Feed and Environment, Veterinary Faculty, University of Ljubljana, Gerbičeva 60, 1000 Ljubljana, Slovenia; (D.T.); (J.B.); (K.P.-V.); (B.J.-S.)
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26
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Shi ZZ, Liu XH, Li XN, Ji NY. Antifungal and Antimicroalgal Trichothecene Sesquiterpenes from the Marine Algicolous Fungus Trichoderma brevicompactum A-DL-9-2. J Agric Food Chem 2020; 68:15440-15448. [PMID: 33332117 DOI: 10.1021/acs.jafc.0c05586] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/12/2023]
Abstract
Eight new trichothecene derivatives, trichodermarins G-N (1-8), and two new cuparene derivatives, trichocuparins A (9) and B (10), as well as six known trichothecenes (11-16) were isolated from the fungal strain Trichoderma brevicompactum A-DL-9-2 obtained from the inner tissue of the marine red alga Chondria tenuissima. The structures and relative configurations of 1-10 were assigned by NMR and MS data, and the absolute configurations of 1, 2, and 9 were established by X-ray diffraction. Compound 8 features an aminosugar unit bond to the trichothecene framework for the first time, while 9 and 10 represent the first occurrence of cuparene sesquiterpenes in Trichoderma. All the isolates were assayed for growth inhibition of five phytopathogenic fungi (Botrytis cinerea, Cochliobolus miyabeanus, Fusarium oxysporum f. sp. cucumerium, Fusarium oxysporum f. sp. niveum, and Phomopsis asparagi) and four marine phytoplankton species (Amphidinium carterae, Heterocapsa circularisquama, Heterosigma akashiwo, and Prorocentrum donghaiense). Several of them exhibited significant inhibitory activities against the fungi and phytoplankton tested of which trichodermin (12) showed the highest antifungal and antimicroalgal activities with MIC and IC50 values being 4.0 and 0.82 μg/mL, respectively.
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Affiliation(s)
- Zhen-Zhen Shi
- Yantai Institute of Coastal Zone Research, Center for Ocean Mega-Science, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
| | - Xiang-Hong Liu
- Yantai Institute of Coastal Zone Research, Center for Ocean Mega-Science, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
- University of Chinese Academy of Sciences, Beijing 100049, People's Republic of China
| | - Xiao-Nian Li
- Kunming Institute of Botany, Chinese Academy of Sciences, Kunming 650201, People's Republic of China
| | - Nai-Yun Ji
- Yantai Institute of Coastal Zone Research, Center for Ocean Mega-Science, Chinese Academy of Sciences, Yantai 264003, People's Republic of China
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27
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Hadwiger LA. Nonhost Disease Resistance in Pea: Chitosan's Suggested Role in DNA Minor Groove Actions Relative to Phytoalexin-Eliciting Anti-Cancer Compounds. Molecules 2020; 25:E5913. [PMID: 33327391 PMCID: PMC7764892 DOI: 10.3390/molecules25245913] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/19/2020] [Revised: 12/09/2020] [Accepted: 12/11/2020] [Indexed: 11/16/2022] Open
Abstract
A stable intense resistance called "nonhost resistance" generates a complete multiple-gene resistance against plant pathogenic species that are not pathogens of pea such as the bean pathogen, Fusarium solani f. sp. phaseoli (Fsph). Chitosan is a natural nonhost resistance response gene activator of defense responses in peas. Chitosan may share with cancer-treatment compounds, netropsin and some anti-cancer drugs, a DNA minor groove target in plant host tissue. The chitosan heptamer and netropsin have the appropriate size and charge to reside in the DNA minor groove. The localization of a percentage of administered radio-labeled chitosan in the nucleus of plant tissue in vivo indicates its potential to transport to site(s) within the nuclear chromatin (1,2). Other minor groove-localizing compounds administered to pea tissue activate the same secondary plant pathway that terminates in the production of the anti-fungal isoflavonoid, pisatin an indicator of the generated resistance response. Some DNA minor groove compounds also induce defense genes designated as "pathogenesis-related" (PR) genes. Hypothetically, DNA targeting components alter host DNA in a manner enabling the transcription of defense genes previously silenced or minimally expressed. Defense-response-elicitors can directly (a) target host DNA at the site of transcription or (b) act by a series of cascading events beginning at the cell membrane and indirectly influence transcription. A single defense response, pisatin induction, induced by chitosan and compounds with known DNA minor groove attachment potential was followed herein. A hypothesis is formulated suggesting that this DNA target may be accountable for a portion of the defense response generated in nonhost resistance.
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Affiliation(s)
- Lee A Hadwiger
- Department of Plant Pathology, Washington State University, Pullman, WA 99164-6430, USA
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28
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Kim YT, Kim SE, Lee WJ, Fumei Z, Cho MS, Moon JS, Oh HW, Park HY, Kim SU. Isolation and characterization of a high iturin yielding Bacillus velezensis UV mutant with improved antifungal activity. PLoS One 2020; 15:e0234177. [PMID: 33270634 PMCID: PMC7714226 DOI: 10.1371/journal.pone.0234177] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/13/2019] [Accepted: 05/14/2020] [Indexed: 11/19/2022] Open
Abstract
To isolate Bacillus velezensis mutants with improved antifungal activity for use in the biological control of phytopathogenic fungi, wild-type Bacillus velezensis KRF-001 producing iturin, surfactin, and fengycin was irradiated by ultraviolet (UV) rays. The in vitro and in vivo antifungal activities of UV mutants and characterization of the cyclic lipopeptides produced by a selected mutant were examined. A mutant strain yielding high levels of iturin showed over 2-fold higher antifungal activity than the wild-type against Fusarium oxysporum. A potent suppressive effect of the mutant was also observed on spore germination of Botrytis cinerea, the causative agent of cucumber gray mold, at different butanol extract concentrations. Further analysis of the mutant by real-time PCR and high-performance liquid chromatography revealed increased expression of iturin and surfactin biosynthesis genes as well as enhanced production of iturin and surfactin metabolites. However, the amounts of fengycin obtained from the mutant strain BSM54 were significantly lesser than those of iturin and surfactin. Particularly, iturin A production by the mutant was 3.5-fold higher than that of the wild-type, suggesting that the higher antifungal activity of the mutant against F. oxysporum resulted from the increased expression of biosynthesis genes associated with iturin production. The commercial greenhouse experiment using soil naturally infested with Sclerotinia sclerotiorum (sclerotinia rot) and F. oxysporum (fusarium wilt) showed that the mutant strain reduced sclerotinia rot and fusarium wilt diseases (P = 0.05) more effectively than the wild-type and commercially available product Cillus® in Korea. These results suggest that the mutant with high iturin yield is a potential candidate for the development of a biological control agent in agriculture.
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Affiliation(s)
- Young Tae Kim
- Industrial Bio-materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Sung Eun Kim
- Industrial Bio-materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Won Jung Lee
- Industrial Bio-materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Zhao Fumei
- Molecular Biofarming Research Center, KRIBB, Daejeon, Republic of Korea
| | | | - Jae Sun Moon
- Molecular Biofarming Research Center, KRIBB, Daejeon, Republic of Korea
| | - Hyun-Woo Oh
- Core Facility Management Center, KRIBB, Daejeon, Republic of Korea
| | - Ho-Yong Park
- Industrial Bio-materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
| | - Sung Uk Kim
- Industrial Bio-materials Research Center, Korea Research Institute of Bioscience and Biotechnology (KRIBB), Daejeon, Republic of Korea
- * E-mail:
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Vandicke J, De Visschere K, Deconinck S, Leenknecht D, Vermeir P, Audenaert K, Haesaert G. Uncovering the biofumigant capacity of allyl isothiocyanate from several Brassicaceae crops against Fusarium pathogens in maize. J Sci Food Agric 2020; 100:5476-5486. [PMID: 32564371 DOI: 10.1002/jsfa.10599] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/30/2020] [Revised: 06/12/2020] [Accepted: 06/21/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Driven by environmental concerns, chemical fumigants are no longer allowed in many countries. Therefore, other strategies for reducing fungal inoculum in soils and on crop debris are being explored. In the present study, several Brassicaceae crops were screened for their potential to control Fusarium gramineaum and Fusarium poae mycelial growth in an in vitro inverted Petri dish experiment. Volatile production was measured using gas chromatography-mass spectrometry headspace analysis. A selection of cultivars from each crop species was further investigated using a pot experiment with maize. RESULTS Ethiopian mustard (Brassica carinata) and brown mustard (Brassica juncea) released volatile allyl isothiocyanate (AITC) and a higher concentration of AITC was correlated with a better fungal growth reduction in the in vitro screening. Brown mustard cultivar Etamine completely inhibited growth of both Fusarium spp. Pure AITC in a solution with methanol resulted in a sigmoid dose-response curve for both Fusarium spp. tested. Fusarium poae appeared to be more tolerant to AITC than F. graminearum. A pot experiment revealed that the incorporation of brown mustard plant material could alleviate the clear negative effect of F. graminearum infection on maize growth. CONCLUSION The present study demonstrated the correlation between the fungistatic effect of biofumigation crops on Fusarium spp. and their production of volatile AITC in vitro, without the addition of exogenous enzymes, and confirmed the biofumigation potential of brown mustard in a pot experiment with maize. These results may help farmers when selecting a green manure crop suitable for biofumigation. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Jonas Vandicke
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Katrien De Visschere
- Biosciences and Food Sciences Department, Faculty Science and Technology, University College Ghent, Ghent, Belgium
| | - Sofie Deconinck
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Diederik Leenknecht
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Pieter Vermeir
- Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Kris Audenaert
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
| | - Geert Haesaert
- Department of Plants and Crops, Faculty of Bioscience Engineering, Ghent University, Ghent, Belgium
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Fatemi F, Abdollahi MR, Mirzaie-asl A, Dastan D, Papadopoulou K. Phytochemical, antioxidant, enzyme activity and antifungal properties of Satureja khuzistanica in vitro and in vivo explants stimulated by some chemical elicitors. Pharm Biol 2020; 58:286-296. [PMID: 32255400 PMCID: PMC7178849 DOI: 10.1080/13880209.2020.1743324] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/07/2019] [Revised: 02/02/2020] [Accepted: 03/11/2020] [Indexed: 05/18/2023]
Abstract
Context: Satureja khuzistanica Jamzad. (Lamiaceae), is known for its antifungal and antioxidant compounds, especially rosmarinic acid (RA).Objective: The study examines the effect of elicitors on RA production and phytochemical properties of S. khuzistanica.Materials and methods: In vitro plants were treated with methyl jasmonate (MeJA) and multi-walled carbon nanotubes (MWCNTs). In vivo plants were treated with MWCNTs and salicylic acid (SA). RA was measured by HPLC. Catalase (CAT), guaiacol peroxidase (POD) and ascorbate peroxidase (APX) were quantified. DPPH and β-carotene were assayed in in vivo extracts. The antifungal effects of extracts were evaluated against Fusarium solani K (FsK).Results: The highest RA contents of in vitro plants were 50 mg/L MeJA (140.99 mg/g DW) and 250 mg/L MWCNTs (140.49 mg/g DW). The highest in vivo were 24 h MWCNTs (7.13 mg/g DW) and 72 h SA (9.12 mg/g DW). The maximum POD and APX activities were at 100 mg/L MeJA (5 and 4 mg protein, respectively). CAT had the highest activities at 50 mg/L MeJA (2 mg protein). DPPH and β-carotene showed 50% and 80% inhibition, respectively. The FsK aggregation was the lowest for in vitro extract in number of conidia [1.82 × 1010], fresh weight (6.51 g) and dry weight (0.21 g) that proved RA inhibitory effects. The callus reduces FsK growth diameter to 2.75 on the 5th day.Discussion and conclusions: Application of MeJA, SA, and MWCNTSs could increase RA in S. khuzistanica and highlighted potential characteristics in pharmaceutical and antifungal effects.
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Affiliation(s)
- Farzaneh Fatemi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
| | - Mohammad Reza Abdollahi
- Department of Agronomy and Plant Breeding, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
| | - Asghar Mirzaie-asl
- Department of Plant Biotechnology, Faculty of Agriculture, Bu-Ali Sina University, Hamedan, Iran
| | - Dara Dastan
- Medicinal Plants and Natural Products Research Center, Hamadan University of Medical Sciences, Hamadan, Iran
- Department of Pharmacognosy and Pharmaceutical Biotechnology, School of Pharmacy, Hamadan University of Medical Sciences, Hamadan, Iran
| | - Kalliope Papadopoulou
- Department of Biochemistry and Biotechnology, University of Thessaly, Larissa, Greece
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Munakata Y, Gavira C, Genestier J, Bourgaud F, Hehn A, Slezack-Deschaumes S. Composition and functional comparison of vetiver root endophytic microbiota originating from different geographic locations that show antagonistic activity towards Fusarium graminearum. Microbiol Res 2020; 243:126650. [PMID: 33302220 DOI: 10.1016/j.micres.2020.126650] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/06/2020] [Revised: 10/30/2020] [Accepted: 11/13/2020] [Indexed: 11/30/2022]
Abstract
Given the current trend towards reducing the use of chemical controls in agriculture, microbial resources such as plant endophytes are being intensively investigated for traits that are conducive to plant protection. Among the various important target pathogens, Fusarium graminearum is a fungal pathogen of cereal crops that is responsible for severe yield losses and mycotoxin contamination in grains. In the present study, we investigated the bacterial endophytic communities from vetiver (Chrysopogon zizanioides (L.) Roberty) roots originating from 5 different geographic locations across Europe and Africa. This study relies on a global 16S metabarcoding approach and the isolation/functional characterization of bacterial isolates. The results we obtained showed that geographical location is a factor that influences the composition and relative abundance of root endophyte communities in vetiver. Three hundred eighty-one bacterial endophytes were isolated and assessed for their in vitro antagonistic activities towards F. graminearum mycelium growth. In total, 46 % of the isolates showed at least 50 % inhibitory activity against F. graminearum. The taxonomic identification of the bioactive isolates revealed that the composition of these functional culturable endophytic communities was influenced by the geographic origins of the roots. The selected communities consisted of 15 genera. Some endophytes in Bacillus, Janthinobacterium, Kosakonia, Microbacterium, Pseudomonas, and Serratia showed strong growth inhibition activity (≥70 %) against F. graminearum and could be candidates for further development as biocontrol agents.
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Affiliation(s)
- Yuka Munakata
- Université de Lorraine - INRAE, LAE, F-54000, Nancy, France
| | - Carole Gavira
- Plant Advanced Technologies, F54500, Vandoeuvre-lès-Nancy, France
| | | | | | - Alain Hehn
- Université de Lorraine - INRAE, LAE, F-54000, Nancy, France
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Chlebek D, Pinski A, Żur J, Michalska J, Hupert-Kocurek K. Genome Mining and Evaluation of the Biocontrol Potential of Pseudomonas fluorescens BRZ63, a New Endophyte of Oilseed Rape ( Brassica napus L.) against Fungal Pathogens. Int J Mol Sci 2020; 21:ijms21228740. [PMID: 33228091 PMCID: PMC7699435 DOI: 10.3390/ijms21228740] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/27/2020] [Revised: 11/12/2020] [Accepted: 11/16/2020] [Indexed: 11/30/2022] Open
Abstract
Endophytic bacteria hold tremendous potential for use as biocontrol agents. Our study aimed to investigate the biocontrol activity of Pseudomonas fluorescens BRZ63, a new endophyte of oilseed rape (Brassica napus L.) against Rhizoctonia solani W70, Colletotrichum dematium K, Sclerotinia sclerotiorum K2291, and Fusarium avenaceum. In addition, features crucial for biocontrol, plant growth promotion, and colonization were assessed and linked with the genome sequences. The in vitro tests showed that BRZ63 significantly inhibited the mycelium growth of all tested pathogens and stimulated germination and growth of oilseed rape seedlings treated with fungal pathogens. The BRZ63 strain can benefit plants by producing biosurfactants, siderophores, indole-3-acetic acid (IAA), 1-aminocyclopropane-1-carboxylate (ACC) deaminase, and ammonia as well as phosphate solubilization. The abilities of exopolysaccharide production, autoaggregation, and biofilm formation additionally underline its potential to plant colonization and hence biocontrol. The effective colonization properties of the BRZ63 strain were confirmed by microscopy observations of EGFP-expressing cells colonizing the root surface and epidermal cells of Arabidopsis thaliana Col-0. Genome mining identified many genes related to the biocontrol process, such as transporters, siderophores, and other secondary metabolites. All analyses revealed that the BRZ63 strain is an excellent endophytic candidate for biocontrol of various plant pathogens and plant growth promotion.
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Affiliation(s)
- Daria Chlebek
- Correspondence: (D.C.); (K.H.-K.); Tel.: +48-32-2009-462 (K.H.-K.)
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Shen Y, Borgatta J, Ma C, Elmer W, Hamers RJ, White JC. Copper Nanomaterial Morphology and Composition Control Foliar Transfer through the Cuticle and Mediate Resistance to Root Fungal Disease in Tomato ( Solanum lycopersicum). J Agric Food Chem 2020; 68:11327-11338. [PMID: 32936626 DOI: 10.1021/acs.jafc.0c04546] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Two copper nanomaterials (CuO nanoparticles [NPs] and Cu3(PO4)2·3H2O nanosheets) and CuSO4 were applied to tomato (Solanum lycopersicum) leaves, and elemental Cu movement from the leaf surface through the cuticle and into the interior leaf tissue was monitored over 8 h. Two forms of nanoscale Cu were used to foliar treat tomato on a weekly basis in greenhouse and field experiments in the presence of the pathogen Fusarium oxysporum f. sp. lycopersici. For CuSO4, Cu accumulation and retention in the cuticle was over 7-fold greater than the nanomaterials, demonstrating that nanoscale morphology and composition mediate Cu accumulation in leaf tissue. In the greenhouse, weekly foliar applications of the nanosheets and NPs increased seedling biomass by 90.9 and 93.3%, respectively, compared to diseased and ionic Cu controls. In the field, Cu3(PO4)2·3H2O nanosheets reduced disease progress by 26.0% and significantly increased fruit yield by over 45.5% per plant relative to the other treatments in diseased soil. These findings suggest that nanoscale nutrient chemical properties can be tuned to maximize and control movement through the cuticle and that interactions at the seedling leaf biointerface can lead to season-long benefit for tomato growing in the presence of Fusarium spp.
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Affiliation(s)
- Yu Shen
- Center for Sustainable Nanotechnology, Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Jaya Borgatta
- Center for Sustainable Nanotechnology, Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Chuanxin Ma
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, Connecticut 06504, United States
| | - Wade Elmer
- Department of Plant Pathology and Ecology, The Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, Connecticut 06504, United States
| | - Robert J Hamers
- Center for Sustainable Nanotechnology, Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, Wisconsin 53706, United States
| | - Jason C White
- Department of Analytical Chemistry, The Connecticut Agricultural Experiment Station, 123 Huntington Street, New Haven, Connecticut 06504, United States
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Yin XD, Ma KY, Wang YL, Sun Y, Shang XF, Zhao ZM, Wang RX, Chen YJ, Zhu JK, Liu YQ. Design, Synthesis, and Antifungal Evaluation of 8-Hydroxyquinoline Metal Complexes against Phytopathogenic Fungi. J Agric Food Chem 2020; 68:11096-11104. [PMID: 32941027 DOI: 10.1021/acs.jafc.0c01322] [Citation(s) in RCA: 55] [Impact Index Per Article: 13.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Phytopathogenic fungal infections have become a major threat to agricultural production, food security, and human health globally, and novel antifungal agents with simple chemical scaffolds and high efficiency are needed. In this study, we designed and synthesized 38 8-hydroxyquinoline metal complexes and evaluated their antifungal activities. The results showed that most of the tested compounds possessed remarkable in vitro antifungal activity. Especially, compound 1e exhibited the highest antifungal potency among all target compounds, with EC50 values of 0.0940, 0.125, 2.95, and 5.96 μg/mL, respectively, against Sclerotinia sclerotiorum, Botrytis cinerea, Fusarium graminearum, and Magnaporthe oryzae. Preliminary mechanistic studies had shown that compound 1e might cause mycelial abnormalities of S. sclerotiorum, cell membrane permeability changes, leakage of cell contents, and inhibition of sclerotia formation and germination. Moreover, the results of in vivo antifungal activity of compound 1e against S. sclerotiorum showed that 1e possessed higher curative effects than that of the positive control azoxystrobin. Therefore, compound 1e is expected to be a novel leading structure for the development of new antifungal agents.
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Affiliation(s)
- Xiao-Dan Yin
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Kun-Yuan Ma
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yu-Ling Wang
- Gansu Academy of Agricultural Sciences, Lanzhou 730000, People's Republic of China
| | - Yu Sun
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Xiao-Fei Shang
- Lanzhou Institute of Husbandry and Pharmaceutical Sciences, Chinese Academy of Agricultural Sciences, 335 Jiangouyan, Lanzhou 730050, People's Republic of China
| | - Zhong-Min Zhao
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ren-Xuan Wang
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Yong-Jia Chen
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Jia-Kai Zhu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
| | - Ying-Qian Liu
- School of Pharmacy, Lanzhou University, Lanzhou 730000, People's Republic of China
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Yun Y, Guo P, Zhang J, You H, Guo P, Deng H, Hao Y, Zhang L, Wang X, Abubakar YS, Zhou J, Lu G, Wang Z, Zheng W. Flippases play specific but distinct roles in the development, pathogenicity, and secondary metabolism of Fusarium graminearum. Mol Plant Pathol 2020; 21:1307-1321. [PMID: 32881238 PMCID: PMC7488471 DOI: 10.1111/mpp.12985] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2020] [Revised: 06/12/2020] [Accepted: 08/03/2020] [Indexed: 05/03/2023]
Abstract
The membrane trafficking system is important for compartmentalization of the biosynthesis pathway and secretion of deoxynivalenol (DON) mycotoxin (a virulence factor) in Fusarium graminearum. Flippases are transmembrane lipid transporters and mediate a number of essential physiological steps of membrane trafficking, including vesicle budding, charging, and protein diffusion within the membrane. However, the roles of flippases in secondary metabolism remain unknown in filamentous fungi. Herein, we identified five flippases (FgDnfA, FgDnfB, FgDnfC1, FgDnfC2, and FgDnfD) in F. graminearum and established their specific and redundant functions in the development and pathogenicity of this phytopathogenic fungus. Our results demonstrate that FgDnfA is critical for normal vegetative growth while the other flippases are dispensable. FgDnfA and FgDnfD were found crucial for the fungal pathogenesis, and a remarkable reduction in DON production was observed in ΔFgDNFA and ΔFgDNFD. Deletion of the FgDNFB gene increased DON production to about 30 times that produced by the wild type. Further analysis showed that FgDnfA and FgDnfD have positive roles in the regulation of trichothecene (TRI) genes (TRI1, TRI4, TRI5, TRI6, TRI12, and TRI101) expression and toxisome reorganization, while FgDnfB acts as a negative regulator of DON synthesis. In addition, FgDnfB and FgDnfD have redundant functions in the regulation of phosphatidylcholine transport, and double deletion of FgDNFB and FgDNFD showed serious defects in fungal development, DON synthesis, and virulence. Collectively, our findings reveal the distinct and specific functions of flippase family members in F. graminearum and principally demonstrate that FgDnfA, FgDnfD, and FgDnfB have specific spatiotemporal roles during toxisome biogenesis.
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Affiliation(s)
- Yingzi Yun
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Pusheng Guo
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Jing Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Haixia You
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Pingting Guo
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Huobin Deng
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Yixin Hao
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Limei Zhang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Xueyu Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | | | - Jie Zhou
- College of Life ScienceFujian Agriculture and Forestry UniversityFuzhouChina
| | - Guodong Lu
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
| | - Zonghua Wang
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
- Institute of Ocean ScienceMinjiang UniversityFuzhouChina
| | - Wenhui Zheng
- State Key Laboratory of Ecological Pest Control for Fujian and Taiwan CropsCollege of Plant ProtectionFujian Agriculture and Forestry UniversityFuzhouChina
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Formela-Luboińska M, Remlein-Starosta D, Waśkiewicz A, Karolewski Z, Bocianowski J, Stępień Ł, Labudda M, Jeandet P, Morkunas I. The Role of Saccharides in the Mechanisms of Pathogenicity of Fusarium oxysporum f. sp. lupini in Yellow Lupine ( Lupinus luteus L.). Int J Mol Sci 2020; 21:ijms21197258. [PMID: 33019571 PMCID: PMC7582877 DOI: 10.3390/ijms21197258] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2020] [Revised: 09/21/2020] [Accepted: 09/29/2020] [Indexed: 12/15/2022] Open
Abstract
The primary aim of this study was to determine the relationship between soluble sugar levels (sucrose, glucose, or fructose) in yellow lupine embryo axes and the pathogenicity of the hemibiotrophic fungus Fusarium oxysporum f. sp. Schlecht lupini. The first step of this study was to determine the effect of exogenous saccharides on the growth and sporulation of F. oxysporum. The second one focused on estimating the levels of ergosterol as a fungal growth indicator in infected embryo axes cultured in vitro on sugar containing-medium or without it. The third aim of this study was to record the levels of the mycotoxin moniliformin as the most characteristic secondary metabolite of F. oxysporum in the infected embryo axes with the high sugar medium and without it. Additionally, morphometric measurements, i.e., the length and fresh weight of embryo axes, were done. The levels of ergosterol were the highest in infected embryo axes with a sugar deficit. At the same time, significant accumulation of the mycotoxin moniliformin was recorded in those tissues. Furthermore, it was found that the presence of sugars in water agar medium inhibited the sporulation of the pathogenic fungus F. oxysporum in relation to the control (sporulation of the pathogen on medium without sugar), the strongest inhibiting effect was observed in the case of glucose. Infection caused by F. oxysporum significantly limited the growth of embryo axes, but this effect was more visible on infected axes cultured under sugar deficiency than on the ones cultured with soluble sugars. The obtained results thus showed that high sugar levels may lead to reduced production of mycotoxins by F. oxysporum, limiting infection development and fusariosis.
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Affiliation(s)
- Magda Formela-Luboińska
- Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland;
| | - Dorota Remlein-Starosta
- Department of Ecology and Environmental Protection, Institute of Plant Protection—National Research Institute, Władysława Węgorka 20, 60-318 Poznań, Poland
| | - Agnieszka Waśkiewicz
- Department of Chemistry, Poznań University of Life Sciences, Wojska Polskiego 75, 60-625 Poznań, Poland;
| | - Zbigniew Karolewski
- Department of Phytopathology, Seed Science and Technology, Poznań University of Life Sciences, Dąbrowskiego 159, 60-594 Poznań, Poland;
| | - Jan Bocianowski
- Department of Mathematical and Statistical Methods, Poznań University of Life Sciences, Wojska Polskiego 28, 60-637 Poznań, Poland;
| | - Łukasz Stępień
- Department of Pathogen Genetics and Plant Resistance, Institute of Plant Genetics, Polish Academy of Sciences, Strzeszyńska 34, 60-479 Poznań, Poland;
| | - Mateusz Labudda
- Department of Biochemistry and Microbiology, Institute of Biology, Warsaw University of Life Sciences-SGGW, Nowoursynowska 159, 02-776 Warsaw, Poland;
| | - Philippe Jeandet
- Research Unit “Induced Resistance and Plant Bioprotection”, UPRES EA 4707, Department of Biology and Biochemistry, Faculty of Sciences, University of Reims, P.O. Box 1039, CEDEX 02, 51687 Reims, France;
| | - Iwona Morkunas
- Department of Plant Physiology, Poznań University of Life Sciences, Wołyńska 35, 60-637 Poznań, Poland;
- Correspondence: or ; Tel.: +48-61-8466040
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Mao X, Hua C, Yang L, Zhang Y, Sun Z, Li L, Li T. The Effects of Selenium on Wheat Fusarium Head Blight and DON Accumulation Were Selenium Compound-Dependent. Toxins (Basel) 2020; 12:toxins12090573. [PMID: 32899906 PMCID: PMC7551897 DOI: 10.3390/toxins12090573] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2020] [Revised: 09/01/2020] [Accepted: 09/02/2020] [Indexed: 12/03/2022] Open
Abstract
Fusarium head blight (FHB) caused by Fusarium graminearum not only results in severe yield losses, but also contaminates wheat grains with deoxynivalenol (DON) toxins. Prevention and control of FHB and DON contamination rely mainly on resistant varieties and fungicides. Selenium (Se) is an essential element for humans and animals, and also a beneficial element for plants. In this work, four Se compounds, i.e., sodium selenite (Na2SeO3), sodium selenate (Na2SeO4), selenomethionine (SeMet) and selenocysteine (SeCys2), were supplemented in a trichothecene biosynthesis induction (TBI) solid medium at different dosages in in vitro experiments. The four Se compounds at the dosage of 20 mg∙L−1 were sprayed onto wheat spikes immediately after inoculation at anthesis. All four of the Se compounds significantly inhibited the mycelial growth and DON production in the in vitro experiment; however, in planta, their effects on FHB severity and toxin accumulation in grains were compound-dependent. SeMet consistently negatively regulated fungal growth and DON accumulation both in vitro and in planta, which could be a novel and proconsumer strategy for reducing the detriment of wheat FHB disease and DON accumulation.
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Affiliation(s)
| | | | | | | | | | | | - Tao Li
- Correspondence: ; Tel.: +86-514-8797-7806
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Hashempour-Baltork F, Hosseini SM, Assarehzadegan MA, Khosravi-Darani K, Hosseini H. Safety assays and nutritional values of mycoprotein produced by Fusarium venenatum IR372C from date waste as substrate. J Sci Food Agric 2020; 100:4433-4441. [PMID: 32406520 DOI: 10.1002/jsfa.10483] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 04/16/2020] [Accepted: 05/14/2020] [Indexed: 06/11/2023]
Abstract
BACKGROUND Nutritional and environmental benefits of mycoprotein verify its beneficial role on the health of humankind in the next decades. Agro-industrial wastes can be used as cheap substrates to decrease the total cost of product. However, fungi may produce toxins or lead to allergic reactions in consumers. Therefore, the study of the safety and nutritional aspects of this product are very important. RESULTS Fusarium venenatum IR372C was cultured on date wastes and ammonium salts in submerge fermentation. The safety and nutritional issues of produced mycoprotein were investigated including allergy tests and analyses of toxins, as well as existence of toxin genes, and content of heavy metals, metals, amino acids and fatty acids. The results showed that fumonisin genes in F. venenatum IR372C remain without any gene expression during 1 week fermentation. Zearalenone and deoxynivalenol cannot be detected in the fermentation medium after 3 weeks. Prick tests on 30 volunteers demonstrated no sensitivities to mycoprotein. The content of lead was 658 μg kg-1 as the highest heavy metal followed by arsenic, cadmium and mercury at 161, 30.57 and 0 μg kg-1 , respectively. Produced mycoprotein includes essential amino acids at appropriate contents and the ratio of unsaturated to saturated fatty acid was nearly 2:1. Also, calcium, iron, magnesium and zinc were found in mycoprotein, which could have health beneficial impacts on consumers. CONCLUSION This study has provided information on safety aspects of mycoprotein production by F. venentaum IR372C from date wastes. However, further studies with focus on long-term clinical benefits of diets containing mycoprotein are necessary. © 2020 Society of Chemical Industry.
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Affiliation(s)
- Fataneh Hashempour-Baltork
- Student Research Committee, Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Seyede Marzieh Hosseini
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Mohammad-Ali Assarehzadegan
- Immunology Research Center, Institute of Immunology and Infectious Diseases, Iran University of Medical Science, Tehran, Iran
| | - Kianoush Khosravi-Darani
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
| | - Hedayat Hosseini
- Department of Food Science and Technology, National Nutrition and Food Technology Research Institute, Faculty of Nutrition Science and Food Technology, Shahid Beheshti University of Medical Sciences, Tehran, Iran
- Food Safety Research Center, Shahid Beheshti University of Medical Sciences, Tehran, Iran
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Bruneel J, Huepe Follert JL, Laforce B, Vincze L, Van Langenhove H, Walgraeve C. Dynamic performance of a fungal biofilter packed with perlite for the abatement of hexane polluted gas streams using SIFT-MS and packing characterization with advanced X-ray spectroscopy. Chemosphere 2020; 253:126684. [PMID: 32464772 DOI: 10.1016/j.chemosphere.2020.126684] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/31/2019] [Revised: 03/16/2020] [Accepted: 03/31/2020] [Indexed: 06/11/2023]
Abstract
The use of Fusarium solani fungi in an expanded perlite packed biofilter was investigated for the treatment of a hexane polluted waste gas stream using selected ion flow tube mass spectrometry (SIFT-MS). The latter analytical technique proved to be of utmost importance to evaluate the performance of the biofilter at high time resolution (seconds) under various transient conditions, analogous to industrial situations. The biofilter was operational for 277 days with inlet loads varying between 1 and 14 g m-3 h-1 and applying an empty bed residence time of 116 s. The results showed a positive behaviour of the biofilter against different types of disruptions such as: (i) changes in the relative humidity of the inlet gas, (ii) stopping the carbon supply for 1, 5 and 10 days, (iii) varying the inlet hexane concentration (step increases and intermittent pulses) and (iv) limiting the availability of nutrients. X-ray imaging (both conventional 2D μCT and X-ray fluorescence, XRF) was applied for the first time on biofilter media in order to get insight in the internal structure of expanded perlite and to visualise the biomass growth. The latter in combination with online porosity measurements using SIFT-MS provides fundamental information regarding the biofiltration process.
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Affiliation(s)
- Joren Bruneel
- Research Group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - José Luis Huepe Follert
- Research Group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Brecht Laforce
- X-ray Microspectroscopy & Imaging Group XMI, Faculty of Sciences, Ghent University, Krijgslaan 281 S12, 9000, Ghent, Belgium
| | - Laszlo Vincze
- X-ray Microspectroscopy & Imaging Group XMI, Faculty of Sciences, Ghent University, Krijgslaan 281 S12, 9000, Ghent, Belgium
| | - Herman Van Langenhove
- Research Group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium
| | - Christophe Walgraeve
- Research Group EnVOC, Department of Green Chemistry and Technology, Faculty of Bioscience Engineering, Ghent University, Coupure Links 653, 9000, Ghent, Belgium.
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Peter Mshelia L, Selamat J, Iskandar Putra Samsudin N, Rafii MY, Abdul Mutalib NA, Nordin N, Berthiller F. Effect of Temperature, Water Activity and Carbon Dioxide on Fungal Growth and Mycotoxin Production of Acclimatised Isolates of Fusarium verticillioides and F. graminearum. Toxins (Basel) 2020; 12:toxins12080478. [PMID: 32731333 PMCID: PMC7472189 DOI: 10.3390/toxins12080478] [Citation(s) in RCA: 34] [Impact Index Per Article: 8.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/10/2020] [Revised: 06/28/2020] [Accepted: 07/02/2020] [Indexed: 11/16/2022] Open
Abstract
Climate change is primarily manifested by elevated temperature and carbon dioxide (CO2) levels and is projected to provide suitable cultivation grounds for pests and pathogens in the otherwise unsuitable regions. The impacts of climate change have been predicted in many parts of the world, which could threaten global food safety and food security. The aim of the present work was therefore to examine the interacting effects of water activity (aw) (0.92, 0.95, 0.98 aw), CO2 (400, 800, 1200 ppm) and temperature (30, 35 °C and 30, 33 °C for Fusarium verticillioides and F. graminearum, respectively) on fungal growth and mycotoxin production of acclimatised isolates of F. verticillioides and F. graminearum isolated from maize. To determine fungal growth, the colony diameters were measured on days 1, 3, 5, and 7. The mycotoxins produced were quantified using a quadrupole-time-of-flight mass spectrometer (QTOF-MS) combined with ultra-high-performance liquid chromatography (UHPLC) system. For F. verticillioides, the optimum conditions for growth of fumonisin B1 (FB1), and fumonisin B2 (FB2) were 30 °C + 0.98 aw + 400 ppm CO2. These conditions were also optimum for F. graminearum growth, and zearalenone (ZEA) and deoxynivalenol (DON) production. Since 30 °C and 400 ppm CO2 were the baseline treatments, it was hence concluded that the elevated temperature and CO2 levels tested did not seem to significantly impact fungal growth and mycotoxin production of acclimatised Fusarium isolates. To the best of our knowledge thus far, the present work described for the first time the effects of simulated climate change conditions on fungal growth and mycotoxin production of acclimatised isolates of F. verticillioides and F. graminearum.
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Affiliation(s)
- Ladi Peter Mshelia
- Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia; (L.P.M.); (N.I.P.S.); (N.-A.A.M.); (N.N.)
- Department of Food Science and Technology, Faculty of Engineering, University of Maiduguri, Borno State 600230, Nigeria
| | - Jinap Selamat
- Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia; (L.P.M.); (N.I.P.S.); (N.-A.A.M.); (N.N.)
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia
- Correspondence: or ; Tel.: +603-97691146
| | - Nik Iskandar Putra Samsudin
- Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia; (L.P.M.); (N.I.P.S.); (N.-A.A.M.); (N.N.)
- Department of Food Science, Faculty of Food Science and Technology, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia
| | - Mohd Y. Rafii
- Department of Crop Science, Faculty of Agriculture, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia;
- Laboratory of Climate-Smart Food Crop Production, Institute of Tropical Agriculture, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia
| | - Noor-Azira Abdul Mutalib
- Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia; (L.P.M.); (N.I.P.S.); (N.-A.A.M.); (N.N.)
- Department of Food Science and Technology, Faculty of Engineering, University of Maiduguri, Borno State 600230, Nigeria
| | - Noordiana Nordin
- Food Safety and Food Integrity, Institute of Tropical Agriculture and Food Security, Universiti Putra Malaysia, 43000 UPM Serdang, Selangor, Malaysia; (L.P.M.); (N.I.P.S.); (N.-A.A.M.); (N.N.)
| | - Franz Berthiller
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences, Vienna (BOKU), Konrad-Lorenz-Str. 20, 3430 Tulln, Austria;
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Hay WT, McCormick SP, Hojilla-Evangelista MP, Bowman MJ, Dunn RO, Teresi JM, Berhow MA, Vaughan MM. Changes in Wheat Nutritional Content at Elevated [CO 2] Alter Fusarium graminearum Growth and Mycotoxin Production on Grain. J Agric Food Chem 2020; 68:6297-6307. [PMID: 32407107 DOI: 10.1021/acs.jafc.0c01308] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Rising atmospheric [CO2] has been shown to impact plant primary metabolism and the severity of Fusarium head blight (FHB) in wheat. In this study, we evaluated how changes in grain nutritional content due to growth at elevated [CO2] affected Fusarium graminearum growth and mycotoxin production. Susceptible (Norm) and moderately resistant (Alsen) hard spring wheat grains that had been grown at ambient (400 ppm) or elevated [CO2] (800 ppm) were independently inoculated with two F. graminearum fungal strains, which produce the trichothecene mycotoxin, deoxynivalenol. Under higher [CO2], FHB-susceptible and moderately resistant wheat had disproportionate losses in protein and mineral contents, with Alsen being more severely impacted. Furthermore, the F. graminearum strain 9F1 had increased mycotoxin biosynthesis in response to the loss of wheat nutritional content in Alsen. Our results demonstrate that future [CO2] conditions may provide a strain-specific pathogenic advantage on hosts, with greater losses in nutritional content.
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Affiliation(s)
- William T Hay
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, 1815 North, University Street, Peoria, Illinois 61604, United States
| | - Susan P McCormick
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, 1815 North, University Street, Peoria, Illinois 61604, United States
| | - Milagros P Hojilla-Evangelista
- Plant Polymer Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, Illinois 61604, United States
| | - Michael J Bowman
- Bioenergy Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, Illinois 61604, United States
| | - Robert O Dunn
- Bio-oils Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, Illinois 61604, United States
| | - Jennifer M Teresi
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, 1815 North, University Street, Peoria, Illinois 61604, United States
| | - Mark A Berhow
- Functional Foods Research Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, Peoria, Illinois 61604, United States
| | - Martha M Vaughan
- Mycotoxin Prevention and Applied Microbiology Unit, National Center for Agricultural Utilization Research, Agricultural Research Service, USDA, 1815 North, University Street, Peoria, Illinois 61604, United States
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Merel D, Savoie JM, Mata G, Salmones D, Ortega C, Atanasova V, Chéreau S, Monribot-Villanueva JL, Guerrero-Analco JA. Methanolic Extracts from Cultivated Mushrooms Affect the Production of Fumonisins B and Fusaric Acid by Fusarium verticillioides. Toxins (Basel) 2020; 12:E366. [PMID: 32498307 PMCID: PMC7354567 DOI: 10.3390/toxins12060366] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/22/2020] [Revised: 05/25/2020] [Accepted: 05/27/2020] [Indexed: 01/21/2023] Open
Abstract
The maize pathogen Fusarium verticillioides and their mycotoxins cause damage to plants, animals, and human health. This work aimed to evaluate the effect of crude extracts (CEs) from Agaricus subrufescens, Lentinula edodes, and Pleurotus ostreatus fruiting bodies on in vitro production of biomass and mycotoxins by two strains of F. verticillioides. Stipes and pilei were separated before extraction for A. subrufescens and L. edodes. Comparative metabolomics and dereplication of phenolic compounds were used to analyze all CEs. Mushroom CEs did not significantly inhibit the production of mycelial biomass at concentrations of 2 mg mL⁻1. CEs from A. subrufescens (stipes and pilei) and L. edodes pilei inhibited the production of fumonisins B1 + B2 + B3 by 54% to 80%, whereas CE from P. ostreatus had no effect. In contrast, CE from L. edodes stipes dramatically increased the concentration of fumonisins in culture media. Fusaric acid concentration was decreased in cultures by all CEs except L. edodes stipes. Differences in phenolic composition of the extracts may explain the different effects of the CE treatments on the production of mycotoxins. The opposing activities of stipes and pilei from L. edodes offer an opportunity to search for active compounds to control the mycotoxin production by F. verticillioides.
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Affiliation(s)
- Daniel Merel
- Red Manejo Biotecnológico de Recursos (RMBR), Instituto de Ecología (A.C), Xalapa 91073, Mexico; (D.M.); (D.S.); (C.O.)
- Red Estudios Moleculares Avanzados (REMAV), Instituto de Ecología (A.C), Xalapa 91073, Mexico;
| | - Jean-Michel Savoie
- INRAE, Mycology and Food Safety (MycSA), F-22882 Villenave d’Ornon, France; (V.A.); (S.C.)
| | - Gerardo Mata
- Red Manejo Biotecnológico de Recursos (RMBR), Instituto de Ecología (A.C), Xalapa 91073, Mexico; (D.M.); (D.S.); (C.O.)
| | - Dulce Salmones
- Red Manejo Biotecnológico de Recursos (RMBR), Instituto de Ecología (A.C), Xalapa 91073, Mexico; (D.M.); (D.S.); (C.O.)
| | - Carlos Ortega
- Red Manejo Biotecnológico de Recursos (RMBR), Instituto de Ecología (A.C), Xalapa 91073, Mexico; (D.M.); (D.S.); (C.O.)
| | - Vessela Atanasova
- INRAE, Mycology and Food Safety (MycSA), F-22882 Villenave d’Ornon, France; (V.A.); (S.C.)
| | - Sylvain Chéreau
- INRAE, Mycology and Food Safety (MycSA), F-22882 Villenave d’Ornon, France; (V.A.); (S.C.)
| | | | - José A. Guerrero-Analco
- Red Estudios Moleculares Avanzados (REMAV), Instituto de Ecología (A.C), Xalapa 91073, Mexico;
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Randall TE, Fernandez-Bayo JD, Harrold DR, Achmon Y, Hestmark KV, Gordon TR, Stapleton JJ, Simmons CW, VanderGheynst JS. Changes of Fusarium oxysporum f.sp. lactucae levels and soil microbial community during soil biosolarization using chitin as soil amendment. PLoS One 2020; 15:e0232662. [PMID: 32369503 PMCID: PMC7199936 DOI: 10.1371/journal.pone.0232662] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2019] [Accepted: 04/20/2020] [Indexed: 11/18/2022] Open
Abstract
Regulatory pressure along with environmental and human health concerns drive the development of soil fumigation alternatives such as soil biosolarization (SBS). SBS involves tarping soil that is at field capacity with a transparent film following amendment with certain organic materials. Heating via the greenhouse effect results in an increase of the soil temperature. The organic amendments can promote microbial activity that can enhance pest inactivation by depleting oxygen, producing biopesticidal fermentation products, and competing with pests. The properties of the organic amendments can heavily influence the type and magnitude of these effects. This study evaluated the viability of chitin as a novel SBS soil amendment to influence soil fungal and bacterial microbial communities, including control of the plant pathogen Fusarium oxysporum f.sp. lactucae (FOL). Changes to FOL and the broader soil microbiota were monitored in response to biosolarization using 0.1% (by dry weight) amendment with chitin (Rootguard). FOL suppression was only observed in chitin amended soils that were incubated at room temperature, not under solarized conditions. Conversely, it decreased solarization efficacy in the upper (0–10 cm) soil layer. The presence of chitin also showed increase in FOL under anaerobic and fluctuating temperature regime conditions. Biosolarization with chitin amendment did exhibit an impact on the overall soil microbial community. The fungal genus Mortierella and the bacterial family Chitinophagaceae were consistently enriched in biosolarized soils with chitin amendment. This study showed low potential FOL suppression due chitin amendment at the studied levels. However, chitin amendment showed a higher impact on the fungal community than the bacterial community. The impact of these microbial changes on crop protection and yields need to be studied in the long-term.
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Affiliation(s)
- Tara E. Randall
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, United States of America
| | - Jesus D. Fernandez-Bayo
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, United States of America
- Department of Food Science and Technology, University of California, Davis, CA, United States of America
- * E-mail:
| | - Duff R. Harrold
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, United States of America
| | - Yigal Achmon
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, United States of America
- Department of Food Science and Technology, University of California, Davis, CA, United States of America
| | - Kelley V. Hestmark
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, United States of America
| | - Thomas R. Gordon
- Department of Plant Pathology, University of California, Davis, CA, United States of America
| | - James J. Stapleton
- Statewide Integrated Pest Management Program, University of California, Kearney Agricultural Research and Extension Center, Parlier, CA, United States of America
| | - Christopher W. Simmons
- Department of Food Science and Technology, University of California, Davis, CA, United States of America
| | - Jean S. VanderGheynst
- Department of Biological and Agricultural Engineering, University of California, Davis, CA, United States of America
- Department of Bioengineering, University of Massachusetts, Dartmouth, MA, United States of America
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Wu H, Qin X, Wu H, Li F, Wu J, Zheng L, Wang J, Chen J, Zhao Y, Lin S, Lin W. Biochar mediates microbial communities and their metabolic characteristics under continuous monoculture. Chemosphere 2020; 246:125835. [PMID: 31927385 DOI: 10.1016/j.chemosphere.2020.125835] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/23/2019] [Revised: 12/29/2019] [Accepted: 01/02/2020] [Indexed: 06/10/2023]
Abstract
Biochar amendment has been extensively used to improve plant performance and suppress disease in monoculture systems; however, few studies have focused on the underlying control mechanisms of replanting disease. In this study, we assessed the effects of biochar application on Radix pseudostellariae plant growth, rhizosphere soil microbial communities, and the physiological properties of microorganisms in a consecutive monoculture system. We found that biochar addition had little impact on the physiological parameters of tissue cultures of R. pseudostellaria but did significantly mediate microbial abundance in the rhizosphere soil of different consecutive monoculture years, leading to decreases in the abundance of pathogenic Fusarium oxysporum, Talaromyces helicus, and Kosakonia sacchari. Furthermore, biochar amendment had negative effects on the growth of beneficial bacteria, such as Burkholderia ambifaria, Pseudomonas chlororaphis, and Bacillus pumilus. Metabolomic analysis indicated that biochar significantly influenced the metabolic processes of F. oxysporum while inhibiting the mycelial growth and abating the virulence on plants. In summary, this study details the potential mechanisms responsible for the biochar-stimulated changes in the abundances and metabolism of rhizosphere bacteria and fungi, decreases in the contents of pathogens, and therefore improvements in the environmental conditions for plants growth. Further research is needed to evaluate the effects of biochar in long-term field trials.
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Affiliation(s)
- Hongmiao Wu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Xianjin Qin
- Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education / College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Huiming Wu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Feng Li
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Jiachun Wu
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Ling Zheng
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Juanying Wang
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Jun Chen
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Yanlin Zhao
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China
| | - Sheng Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China.
| | - Wenxiong Lin
- Fujian Provincial Key Laboratory of Agroecological Processing and Safety Monitoring, College of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory of Crop Ecology and Molecular Physiology, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China; Key Laboratory for Genetics, Breeding and Multiple Utilization of Crops, Ministry of Education / College of Crop Science, Fujian Agriculture and Forestry University, Fuzhou, 350002, PR China.
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Tippannanavar M, Verma A, Kumar R, Gogoi R, Kundu A, Patanjali N. Preparation of Nanofungicides Based on Imidazole Drugs and Their Antifungal Evaluation. J Agric Food Chem 2020; 68:4566-4578. [PMID: 32227935 DOI: 10.1021/acs.jafc.9b06387] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
In spite of modern crop protection measures, the overall crop losses due to pests and pathogens are huge. Rhizoctonia solani, Macrophomina phaseolina, Sclerotium rolfsii, and Fusarium oxysporum are one of the most devastating soil-borne fungi and cause numerous plant diseases. Therefore, the present study aimed to systematically design and develop new nanofungicides based on imidazole drugs, clotrimazole, econazole nitrate, and miconazole nitrate, for effective and efficient management of plant diseases. The assessment of these antifungal medicines for their fungicide likeness using Hao's rule and their enzyme inhibitory potential by molecular docking was helpful in ensuring their utility as antifungal agents in managing phytopathogenic fungi. Nanotechnological strategies were used to develop nanoformulations of test compounds in poly(ethylene glycol) 300 for further augmenting their bioactivity. Transmission electron microscopy studies confirmed the nanosize of the prepared products. Analysis of their in vitro and in vivo antifungal properties revealed their usefulness in controlling the test fungi, R. solani, M. phaseolina, S. rolfsii, and F. oxysporum. Excellent in vitro antifungal activities were displayed by the clotrimazole nanoformulation with a median effective dose (ED50) of 1.18 μg/mL against R. solani, the econazole nitrate nanoformulation with an ED50 of 5.25 μg/mL against S. rolfsii, and the miconazole nitrate nanoformulation with an ED50 of 1.49 and 1.82 μg/mL against M. phaseolina and F. oxysporum. Furthermore, in vivo studies against test fungi demonstrated the antifungal potency of all the nanoformulations with disease incidences ranging from 11.11 to 27.38% in plants treated with nanoformulations of test chemicals as compared to the inoculated control (39.68-72.38%).
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Affiliation(s)
- Madhu Tippannanavar
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
| | - Ankita Verma
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
| | - Rajesh Kumar
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
| | - Robin Gogoi
- Division of Plant Pathology, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
| | - Aditi Kundu
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
| | - Neeraj Patanjali
- Division of Agricultural Chemicals, ICAR-Indian Agricultural Research Institute, New Delhi 110 012, India
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Izquierdo-García LF, González-Almario A, Cotes AM, Moreno-Velandia CA. Trichoderma virens Gl006 and Bacillus velezensis Bs006: a compatible interaction controlling Fusarium wilt of cape gooseberry. Sci Rep 2020; 10:6857. [PMID: 32321998 PMCID: PMC7176702 DOI: 10.1038/s41598-020-63689-y] [Citation(s) in RCA: 21] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/15/2019] [Accepted: 03/27/2020] [Indexed: 12/12/2022] Open
Abstract
The combination of Trichoderma virens Gl006 and B. velezensis Bs006 as a consortium has high potential to control Fusarium wilt (FW) of cape gooseberry (Physalis peruviana) caused by Fusarium oxysporum f. sp. physali (Foph). However, the interactions between these two microorganisms that influence the biocontrol activity as a consortium have not been studied. Here, we studied the interactions between Gl006 and Bs006 that keep their compatibility under in vitro and greenhouse conditions. Antagonism tests between Gl006 and Bs006 inoculated both individually and in consortium against Foph strain Map5 was carried out on several solid media. The effect of supernatant of each selected microorganism on growth, conidia germination, biofilm formation and antagonistic activity on its partner was also studied. Biocontrol activity by different combinations of cells and supernatants from both microorganisms against Fusarium wilt was evaluated under greenhouse conditions. In vitro antagonism of the consortium against Foph showed a differential response among culture media and showed compatibility among BCA under nutritional conditions close to those of the rhizosphere. The supernatant of Bs006 did not affect the antagonistic activity of Gl006 and vice versa. However, the supernatant of Bs006 promoted the biocontrol activity of Gl006 in a synergistic way under greenhouse, reducing the disease severity by 71%. These results prove the compatibility between T. virens Gl006 and B. velezensis Bs006 as a potential tool to control Fusarium wilt of cape gooseberry.
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Affiliation(s)
- L F Izquierdo-García
- Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, Centro de Investigación Tibaitatá, Km 14 vía Mosquera - Bogotá, Mosquera, Colombia
| | - A González-Almario
- Facultad de Ciencias Agrarias, Universidad Nacional de Colombia, Bogotá, Colombia
| | - A M Cotes
- Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, Centro de Investigación Tibaitatá, Km 14 vía Mosquera - Bogotá, Mosquera, Colombia
| | - C A Moreno-Velandia
- Corporación Colombiana de Investigación Agropecuaria - AGROSAVIA, Centro de Investigación Tibaitatá, Km 14 vía Mosquera - Bogotá, Mosquera, Colombia.
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Filho FO, Silva EDO, Lopes MMDA, Ribeiro PRV, Oster AH, Guedes JAC, Zampieri DDS, Bordallo PDN, Zocolo GJ. Effect of pulsed light on postharvest disease control-related metabolomic variation in melon (Cucumis melo) artificially inoculated with Fusarium pallidoroseum. PLoS One 2020; 15:e0220097. [PMID: 32310943 PMCID: PMC7170254 DOI: 10.1371/journal.pone.0220097] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2019] [Accepted: 03/17/2020] [Indexed: 01/03/2023] Open
Abstract
Pulsed light, as a postharvest technology, is an alternative to traditional fungicides, and can be used on a wide variety of fruit and vegetables for sanitization or pathogen control. In addition to these applications, other effects also are detected in vegetal cells, including changes in metabolism and secondary metabolite production, which directly affect disease control response mechanisms. This study aimed to evaluate pulsed ultraviolet light in controlling postharvest rot, caused by Fusarium pallidoroseum in 'Spanish' melon, in natura, and its implications in disease control as a function of metabolomic variation to fungicidal or fungistatic effects. The dose of pulsed light (PL) that inhibited F. pallidoroseum growth in melons (Cucumis melo var. Spanish) was 9 KJ m-2. Ultra-performance liquid chromatography (UPLC) coupled to a quadrupole-time-of-flight (QTOF) mass analyzer identified 12 compounds based on tandem mass spectrometry (MS/MS) fragmentation patterns. Chemometric analysis by Principal Components Analysis (PCA) and Orthogonal Partial Least Squared Discriminant Analysis (OPLS-DA) and corresponding S-Plot were used to evaluate the changes in fruit metabolism. PL technology provided protection against postharvest disease in melons, directly inhibiting the growth of F. pallidoroseum through the upregulation of specific fruit biomarkers such as pipecolic acid (11), saponarin (7), and orientin (3), which acted as major markers for the defense system against pathogens. PL can thus be proposed as a postharvest technology to prevent chemical fungicides and may be applied to reduce the decay of melon quality during its export and storage.
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Affiliation(s)
- Francisco Oiram Filho
- Department of Chemical Engineering, Science Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Ebenézer de Oliveira Silva
- Multiuser Laboratory of Natural Products Chemistry, EMBRAPA Agroindústria Tropical, Fortaleza, Ceará, Brazil
| | - Mônica Maria de Almeida Lopes
- Department of Biochemistry and Molecular Biology, Science Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Andréia Hansen Oster
- Post Harvest Laboratory, EMBRAPA Uva e Vinho, Bento Gonçalves, Rio Grande do Sul, Brazil
| | - Jhonyson Arruda Carvalho Guedes
- Department of Analytical and Physical-Chemical Chemistry, Science Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | - Dávila de Souza Zampieri
- Department of Organic and Inorganic Chemistry, Science Center, Federal University of Ceará, Fortaleza, Ceará, Brazil
| | | | - Guilherme Julião Zocolo
- Multiuser Laboratory of Natural Products Chemistry, EMBRAPA Agroindústria Tropical, Fortaleza, Ceará, Brazil
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Shen T, Wang Q, Li C, Zhou B, Li Y, Liu Y. Transcriptome sequencing analysis reveals silver nanoparticles antifungal molecular mechanism of the soil fungi Fusarium solani species complex. J Hazard Mater 2020; 388:122063. [PMID: 31972432 DOI: 10.1016/j.jhazmat.2020.122063] [Citation(s) in RCA: 33] [Impact Index Per Article: 8.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/02/2019] [Revised: 01/08/2020] [Accepted: 01/08/2020] [Indexed: 06/10/2023]
Abstract
Silver nanoparticles (AgNPs) have been widely used in various fields due to their antimicrobial activities. However, the antimicrobial mechanisms of AgNPs against fungi, especially on transcriptional level, are still unclear. In this study, the inhibitory property of AgNPs against Fusarium solani species complex was investigated. Transmission electron microscopes were used to observe the alterations in morphology and cellular structure of fungal hyphae treated with AgNPs. Disturbances in the cell walls and membranes, as well as empty space in the cytoplasm were observed. The transcriptome sequencing of F. solani species complex mycelia was performed using the Illumina NextSeq 500 ribonucleic acid sequencing (RNA-Seq) platform. In the RNA-Seq study, AgNPs treatment resulted in 2503 differentially expressed genes (DEGs). Gene Ontology (GO) analysis revealed that the DEGs were mainly involved in 6 different terms. Kyoto Encyclopedia of Genes and Genomes (KEGG) analysis also revealed that energy and substance metabolism, signal transduction and genetic information processing were the most highly enriched pathways for these DEGs. In addition, RNA-seq results were validated by quantitative polymerase chain reactions (qPCRs). Our findings enhanced the understanding of the antifungal activities of AgNPs and the underlying molecular mechanisms, and provided a new perspective for investigating this novel antifungal agent.
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Affiliation(s)
- Tianlin Shen
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, State Key Laboratory of Nutrition Resources Integrated Utilization, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Qiushuang Wang
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, State Key Laboratory of Nutrition Resources Integrated Utilization, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Chengliang Li
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, State Key Laboratory of Nutrition Resources Integrated Utilization, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Bo Zhou
- College of Life Sciences, Shandong Agricultural University, Tai'an, Shandong, 271018, China
| | - Yuhuan Li
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, State Key Laboratory of Nutrition Resources Integrated Utilization, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, China
| | - Yanli Liu
- National Engineering Laboratory for Efficient Utilization of Soil and Fertilizer Resources, State Key Laboratory of Nutrition Resources Integrated Utilization, College of Resources and Environment, Shandong Agricultural University, Tai'an, Shandong 271018, China.
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Moura RD, de Castro LAM, Culik MP, Fernandes AAR, Fernandes PMB, Ventura JA. Culture medium for improved production of conidia for identification and systematic studies of Fusarium pathogens. J Microbiol Methods 2020; 173:105915. [PMID: 32259530 DOI: 10.1016/j.mimet.2020.105915] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 04/03/2020] [Accepted: 04/03/2020] [Indexed: 11/17/2022]
Abstract
Fusarium guttiforme and Fusarium ananatum are the etiological agents of fusariosis and fruitlet core rot in pineapple, respectively, producing mycotoxins that are harmful to the health of consumers. These two fungi are morphologically similar and difficulty in obtaining macroconidia of the species limits their identification. Different types of media are available for the culture of these pathogens, but not all of them favor F. ananatum and F. guttiforme macroconidia production. Therefore, the objective of this study was to develop a simple culture medium to improve rapid macro- and microconidia formation in both F. guttiforme and F. ananatum to facilitate taxonomic, pathogenicity and mycotoxin studies. In vitro analysis showed that basal medium with carboxymethyl cellulose (CMC) was better than other media tested with the highest macroconidia production at 7 days of incubation. The highest production of microconidia was with synthetic nutrient medium (SN) at 7 days. F. ananatum produced a relatively high number of microconidia with one septum in comparison to F. guttiforme when cultured in CMC, which suggests an additional character useful for Fusarium taxonomy. CMC medium may serve as an improved alternative to culture media currently used in Fusarium research and contribute to further knowledge of the taxonomy and mycotoxins of Fusarium species.
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Affiliation(s)
- Raíssa Debacker Moura
- Biotechnology Core, Federal University of Espirito Santo, Av. Marechal Campos, 1468, Maruípe, 29043-910 Vitória, ES, Brazil.
| | - Luiza Adami Monteiro de Castro
- Biotechnology Core, Federal University of Espirito Santo, Av. Marechal Campos, 1468, Maruípe, 29043-910 Vitória, ES, Brazil
| | - Mark Paul Culik
- Capixaba Institute of Research, Technical Assistance and Rural Extension, INCAPER, Vitória, Espírito Santo, Brazil
| | | | | | - José Aires Ventura
- Capixaba Institute of Research, Technical Assistance and Rural Extension, INCAPER, Vitória, Espírito Santo, Brazil
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Kovač T, Šarkanj B, Borišev I, Djordjevic A, Jović D, Lončarić A, Babić J, Jozinović A, Krska T, Gangl J, Ezekiel CN, Sulyok M, Krska R. Fullerol C 60(OH) 24 Nanoparticles Affect Secondary Metabolite Profile of Important Foodborne Mycotoxigenic Fungi In Vitro. Toxins (Basel) 2020; 12:toxins12040213. [PMID: 32230978 PMCID: PMC7232364 DOI: 10.3390/toxins12040213] [Citation(s) in RCA: 9] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/24/2020] [Revised: 03/22/2020] [Accepted: 03/25/2020] [Indexed: 02/06/2023] Open
Abstract
Despite the efforts to control mycotoxin contamination worldwide, extensive contamination has been reported to occur in food and feed. The contamination is even more intense due to climate changes and different stressors. This study examined the impact of fullerol C60(OH)24 nanoparticles (FNP) (at 0, 1, 10, 100, and 1000 ng mL-1) on the secondary metabolite profile of the most relevant foodborne mycotoxigenic fungi from genera Aspergillus, Fusarium, Alternaria and Penicillium, during growth in vitro. Fungi were grown in liquid RPMI 1640 media for 72 h at 29 °C, and metabolites were investigated by the LC-MS/MS dilute and shoot multimycotoxin method. Exposure to FNP showed great potential in decreasing the concentrations of 35 secondary metabolites; the decreases were dependent on FNP concentration and fungal genus. These results are a relevant guide for future examination of fungi-FNP interactions in environmental conditions. The aim is to establish the exact mechanism of FNP action and determine the impact such interactions have on food and feed safety.
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Affiliation(s)
- Tihomir Kovač
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia; (B.Š.); (A.L.); (J.B.); (A.J.)
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria; (T.K.); (C.N.E.); (M.S.); (R.K.)
- Correspondence: ; Tel.: +385-31-224-341; Fax: +385-31-207-115
| | - Bojan Šarkanj
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia; (B.Š.); (A.L.); (J.B.); (A.J.)
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria; (T.K.); (C.N.E.); (M.S.); (R.K.)
- Department of Food Technology, University North, Trg dr. Žarka Dolinara 1, 48000 Koprivnica, Croatia
| | - Ivana Borišev
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia; (I.B.); (A.D.); (D.J.)
| | - Aleksandar Djordjevic
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia; (I.B.); (A.D.); (D.J.)
| | - Danica Jović
- Department of Chemistry, Biochemistry and Environmental Protection, Faculty of Sciences, University of Novi Sad, Trg Dositeja Obradovića 3, 21000 Novi Sad, Serbia; (I.B.); (A.D.); (D.J.)
| | - Ante Lončarić
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia; (B.Š.); (A.L.); (J.B.); (A.J.)
| | - Jurislav Babić
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia; (B.Š.); (A.L.); (J.B.); (A.J.)
| | - Antun Jozinović
- Faculty of Food Technology, Josip Juraj Strossmayer University of Osijek, Franje Kuhača 20, 31000 Osijek, Croatia; (B.Š.); (A.L.); (J.B.); (A.J.)
| | - Tamara Krska
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria; (T.K.); (C.N.E.); (M.S.); (R.K.)
| | - Johann Gangl
- Institute of Biotechnology in Plant Production, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria;
| | - Chibundu N. Ezekiel
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria; (T.K.); (C.N.E.); (M.S.); (R.K.)
- Department of Microbiology, Babcock University, Ilishan Remo 121103, Ogun State, Nigeria
| | - Michael Sulyok
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria; (T.K.); (C.N.E.); (M.S.); (R.K.)
| | - Rudolf Krska
- Institute of Bioanalytics and Agro-Metabolomics, Department of Agrobiotechnology (IFA-Tulln), University of Natural Resources and Life Sciences Vienna (BOKU), Konrad Lorenzstr. 20, 3430 Tulln, Austria; (T.K.); (C.N.E.); (M.S.); (R.K.)
- Institute for Global Food Security, School of Biological Sciences, Queen’s University Belfast, University Road, Belfast BT7 1NN, Northern Ireland, UK
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