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Wu J, Xin R, Jiang Y, Jin H, Liu H, Zhang H, Jiang D, Fu Y, Xie J, Cheng J, Lin Y. Botrytis cinerea type II inhibitor of apoptosis BcBIR1 enhances the biocontrol capacity of Coniothyrium minitans. Microb Biotechnol 2024; 17:e14402. [PMID: 38393322 PMCID: PMC10886433 DOI: 10.1111/1751-7915.14402] [Citation(s) in RCA: 1] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/12/2023] [Revised: 12/15/2023] [Accepted: 12/22/2023] [Indexed: 02/25/2024] Open
Abstract
Apoptosis-like programmed cell death is associated with fungal development, ageing, pathogenicity and stress responses. Here, to explore the potential of Botrytis cinerea type II inhibitor of apoptosis (IAP) BcBIR1 in elevating the biocontrol efficacy of Coniothyrium minitans, the BcBIR1 gene was heterologously expressed in C. minitans. Results indicated that the strains expressing BcBIR1 had higher rates of conidiation, mycelial growth and biomass growth than the wild-type strain. Moreover, BcBIR1 was found to inhibit apoptosis, indicating its role as an IAP in C. minitans. Under various abiotic stresses, the growth rates of BcBIR1-expressing strains were significantly higher than that of the wild-type strain. Moreover, the conidial survival rate of the BcBIR1-expressing strains treated with ultraviolet irradiation was enhanced. In antifungal activity assay, the culture filtrates of BcBIR1-expressing strains displayed a stronger inhibitory effect on B. cinerea and Sclerotinia sclerotiorum than the wild-type strain. The study also found that BcBIR1 expression increased the mycoparasitism against the sclerotia, but not the hyphae of S. sclerotiorum. Taken together, these results suggest that BcBIR1 enhances vegetative growth, conidiation, anti-apoptosis activity, abiotic stress resistance, antifungal activity and mycoparasitism in C. minitans. As an IAP, BcBIR1 may improve the control capacity of C. minitans against S. sclerotiorum.
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Affiliation(s)
- Jianing Wu
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Ruolong Xin
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Yachan Jiang
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Huanan Jin
- Key Laboratory of Elemene Class Anti‐cancer Chinese Medicine of Zhejiang Province, Engineering Laboratory of Development and Application of Traditional Chinese Medicine from Zhejiang Province, Holistic Integrative Pharmacy Institute, Health Science CenterHangzhou Normal UniversityHangzhouZhejiangChina
| | - Hao Liu
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Hongxiang Zhang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Daohong Jiang
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Yanping Fu
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Jiatao Xie
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Jiasen Cheng
- State Key Laboratory of Agricultural MicrobiologyHuazhong Agricultural UniversityWuhanChina
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
| | - Yang Lin
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and TechnologyHuazhong Agricultural UniversityWuhanChina
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Patel D, Shittu TA, Baroncelli R, Muthumeenakshi S, Osborne TH, Janganan TK, Sreenivasaprasad S. Genome Sequence of the Biocontrol Agent Coniothyrium minitans Conio (IMI 134523). MOLECULAR PLANT-MICROBE INTERACTIONS : MPMI 2021; 34:222-225. [PMID: 33118857 DOI: 10.1094/mpmi-05-20-0124-a] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
Coniothyrium minitans (synonym, Paraphaeosphaeria minitans) is a highly specific mycoparasite of the wide host range crop pathogen Sclerotinia sclerotiorum. The capability of C. minitans to destroy the sclerotia of S. sclerotiorum has been well recognized and it is available as a widely used biocontrol product Contans WG. We present the draft genome sequence of C. minitans Conio (IMI 134523), which has previously been used in extensive studies that formed part of a registration package of the commercial product. This work provides a distinctive resource for further research into the molecular basis of mycoparasitism to harness the biocontrol potential of C. minitans.[Formula: see text] Copyright © 2021 The Author(s). This is an open access article distributed under the CC BY-NC-ND 4.0 International license.
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Affiliation(s)
- Denise Patel
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
| | - Taiwo A Shittu
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
| | - Riccardo Baroncelli
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
- Instituto Hispano-Luso de Investigaciones Agrarias (CIALE), Universidad de Salamanca, Villamayor, Salamanca, Spain
| | - Sreenivasaprasad Muthumeenakshi
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
| | - Thomas H Osborne
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
| | - Thamarai K Janganan
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
| | - Surapareddy Sreenivasaprasad
- School of Life Sciences, Institute of Biomedical and Environmental Science and Technology (iBEST), University of Bedfordshire, Luton, United Kingdom
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Zhao H, Zhou T, Xie J, Cheng J, Chen T, Jiang D, Fu Y. Mycoparasitism illuminated by genome and transcriptome sequencing of Coniothyrium minitans, an important biocontrol fungus of the plant pathogen Sclerotinia sclerotiorum. Microb Genom 2020; 6:e000345. [PMID: 32141811 PMCID: PMC7200069 DOI: 10.1099/mgen.0.000345] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/27/2019] [Accepted: 02/11/2020] [Indexed: 12/04/2022] Open
Abstract
Coniothyrium minitans is a mycoparasite of the notorious plant pathogen Sclerotinia sclerotiorum. To further understand the parasitism of C. minitans, we assembled and analysed its genome and performed transcriptome analyses. The genome of C. minitans strain ZS-1 was assembled into 350 scaffolds and had a size of 39.8 Mb. A total of 11 437 predicted genes and proteins were annotated, and 30.8 % of the blast hits matched proteins encoded by another member of the Pleosporales, Paraphaeosphaeria sporulosa, a worldwide soilborne fungus with biocontrol ability. The transcriptome of strain ZS-1 during the early interaction with S. sclerotiorum at 0, 4 and 12 h was analysed. The detected expressed genes were involved in responses to host defenses, including cell-wall-degrading enzymes, transporters, secretory proteins and secondary metabolite productions. Seventeen differentially expressed genes (DEGs) of fungal cell-wall-degrading enzymes (FCWDs) were up-regulated during parasitism, with only one down-regulated. Most of the monocarboxylate transporter genes of the major facilitator superfamily and all the detected ABC transporters, especially the heavy metal transporters, were significantly up-regulated. Approximately 8 % of the 11 437 proteins in C. minitans were predicted to be secretory proteins with catalytic activity. In the molecular function category, hydrolase activity, peptidase activity and serine hydrolase activity were enriched. Most genes involved in serine hydrolase activity were significantly up-regulated. This genomic analysis and genome-wide expression study demonstrates that the mycoparasitism process of C. minitans is complex and a broad range of proteins are deployed by C. minitans to successfully invade its host. Our study provides insights into the mechanisms of the mycoparasitism between C. minitans and S. sclerotiorum and identifies potential secondary metabolites from C. minitans for application as a biocontrol agent.
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Affiliation(s)
- Huizhang Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
| | - Ting Zhou
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
| | - Jiatao Xie
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
| | - Jiasen Cheng
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
| | - Tao Chen
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
| | - Daohong Jiang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
| | - Yanping Fu
- Hubei Key Laboratory of Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, Hubei Province, PR China
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CmAim24 Is Essential for Mitochondrial Morphology, Conidiogenesis, and Mycoparasitism in Coniothyrium minitans. Appl Environ Microbiol 2020; 86:AEM.02291-19. [PMID: 31836578 DOI: 10.1128/aem.02291-19] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 11/25/2019] [Indexed: 11/20/2022] Open
Abstract
Coniothyrium minitans is an important mycoparasite of the notorious phytopathogenic fungus Sclerotinia sclerotiorum The mycoparasitism system of C. minitans-S. sclerotiorum is unique and important in probing fungi and fungal interactions. Here, we report a conidiation-deficient mutant, ZS-1TN1961, which was screened from a transfer DNA (T-DNA) insertional library of C. minitans A single-copy gene, encoding a protein with high sequence similarity to Aim24 (altered inheritance of mitochondria protein 24) in Saccharomyces cerevisiae, was disrupted by T-DNA insertion in this mutant. Gene replacement and complementation experiments confirmed that mutants lacking CmAim24 exhibited significantly reduced conidial production and germination as well as reduced sclerotial mycoparasitic ability. Furthermore, cellular localization assays showed that CmAim24 localized to mitochondria, and abnormal mitochondria were observed in the ΔCmAim24 mutant. The ΔCmAim24 mutant exhibited significant accumulation of reactive oxygen species (ROS) and a reduced ATP content in mycelia. In summary, our results suggest that CmAim24 plays a key role in mitochondrial architecture and function, conidiogenesis, and mycoparasitism in C. minitans IMPORTANCE Aim24 proteins are involved in mitochondrial biogenesis and accumulate between the two membranes of a mitochondrion. Their function in prokaryotes and filamentous fungi is as yet unknown. In the present study, we characterized an Aim24 protein, CmAim24, in the mycoparasite Coniothyrium minitans and proved its critical role in mitochondrial morphology and function, conidiogenesis, conidial germination, and mycoparasitism to S. sclerotiorum.
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Sun X, Zhao Y, Jia J, Xie J, Cheng J, Liu H, Jiang D, Fu Y. Uninterrupted Expression of CmSIT1 in a Sclerotial Parasite Coniothyrium minitans Leads to Reduced Growth and Enhanced Antifungal Ability. Front Microbiol 2017; 8:2208. [PMID: 29176968 PMCID: PMC5686095 DOI: 10.3389/fmicb.2017.02208] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/23/2017] [Accepted: 10/26/2017] [Indexed: 01/02/2023] Open
Abstract
Coniothyrium minitans is an important mycoparasite of Sclerotinia sclerotiorum. In addition, it also produces small amounts of antifungal substances. ZS-1TN1812, an abnormal mutant, was originally screened from a T-DNA insertional library. This mutant showed abnormal growth phenotype and could significantly inhibit the growth of S. sclerotiorum when dual-cultured on a PDA plate. When spraying the filtrate of ZS-1TN1812 on the leaves of rapeseed, S. sclerotiorum infection was significantly inhibited, suggesting that the antifungal substances produced by this mutant were effective on rapeseed leaves. The thermo-tolerant antifungal substances could specifically suppress the growth of S. sclerotiorum, but could not significantly suppress the growth of another fungus, Colletotrichum higginsianum. However, C. higginsianum was more sensitive to proteinous antibiotics than S. sclerotiorum. The T-DNA insertion in ZS-1TN1812 activated the expression of CmSIT1, a gene involved in siderophore-mediated iron transport. It was also determined that mutant ZS-1TN1812 produced hypha with high iron levels. In the wild-type strain ZS-1, CmSIT1 was expressed only when in contact with S. sclerotiorum, and consistent overexpression of CmSIT1 showed similar phenotypes as ZS-1TN1812. Therefore, activated expression of CmSIT1 leads to the enhanced antifungal ability, and CmSIT1 is a potential gene for improving the control ability of C. minitans.
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Affiliation(s)
- Xiping Sun
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Ying Zhao
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jichun Jia
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiatao Xie
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Jiasen Cheng
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Huiquan Liu
- State Key Laboratory of Crop Stress Biology for Arid Areas, College of Plant Protection, Northwest Agriculture and Forestry University, Yangling, China
| | - Daohong Jiang
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, China
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
| | - Yanping Fu
- The Provincial Key Lab of Plant Pathology of Hubei Province, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan, China
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Wińska K, Mączka W, Grabarczyk M, Sugimoto K, Matsuya Y, Szumny A, Anioł M. A Macrosphelide as the Unexpected Product of a Pleurotus ostreatus Strain-Mediated Biotransformation of Halolactones Containing the gem-Dimethylcyclohexane Ring. Part 1. Molecules 2016; 21:molecules21070859. [PMID: 27376255 PMCID: PMC6273929 DOI: 10.3390/molecules21070859] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/28/2016] [Revised: 06/14/2016] [Accepted: 06/25/2016] [Indexed: 11/16/2022] Open
Abstract
The aim of the study was to obtain new compounds during biotransformation of two halocompounds, the δ-bromo and δ-iodo-γ-bicyclolactones 1 and 2. Unexpectedly Pleurotus ostreatus produced together with the hydroxylactone, 2-hydroxy-4,4-dimethyl-9-oxabicyclo[4.3.0]nonane-8-one (3), its own metabolite (3S,9S,15S)-(6E,12E)-3,9,15-trimethyl-4,10,16-trioxacyclohexa-deca-6,12-diene-1,5,8,11,14-pentaone (4). The method presented here, in which this macrosphelide 4 was obtained by biotransformation, has not been previously described in the literature. To the best of our knowledge, this compound has been prepared only by chemical synthesis to date. This is the first report on the possibility of the biosynthesis of this compound by the Pleurotus ostreatus strain. The conditions and factors, like temperature, salts, organic solvents, affecting the production of this macrosphelide by Pleurotus ostreatus strain were examined. The highest yield of macroshphelide production was noticed for halolactones, as well with iodide, bromide, iron and copper (2+) ions as inductors.
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Affiliation(s)
- Katarzyna Wińska
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Wanda Mączka
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Małgorzata Grabarczyk
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Kenji Sugimoto
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, 930-0194 Toyama, Japan.
| | - Yuji Matsuya
- Graduate School of Medicine and Pharmaceutical Sciences, University of Toyama, 2630 Sugitani, 930-0194 Toyama, Japan.
| | - Antoni Szumny
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
| | - Mirosław Anioł
- Department of Chemistry, Wroclaw University of Environmental and Life Sciences, Norwida 25, 50-375 Wrocław, Poland.
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Lou Y, Han Y, Yang L, Wu M, Zhang J, Cheng J, Wang M, Jiang D, Chen W, Li G. CmpacC regulates mycoparasitism, oxalate degradation and antifungal activity in the mycoparasitic fungus Coniothyrium minitans. Environ Microbiol 2015; 17:4711-29. [PMID: 26278965 DOI: 10.1111/1462-2920.13018] [Citation(s) in RCA: 32] [Impact Index Per Article: 3.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/18/2015] [Revised: 08/05/2015] [Accepted: 08/08/2015] [Indexed: 11/30/2022]
Abstract
The PacC/Rim101 pH-responsive transcription factor is an important pathogenicity element for many plant-pathogenic fungi. In this study, we investigated the roles of a PacC homologue, CmpacC, in the mycoparasitic fungus Coniothyrium minitans. CmpacC was confirmed to have the transcriptional activation activity by the transcriptional activation test in Saccharomyces cerevisiae. Disruption of CmpacC resulted in impaired fungal responses to ambient pH. Compared to the wild-type, the CmpacC-disruption mutant ΔCmpacC-29 was significantly suppressed for activities of chitinase and β-1,3-glucanase at pH 5 and 7, consistent with reduced expression levels of Cmch1 and Cmg1 coding for the two enzymes respectively. However, the mutant displayed acidity-mimicking phenotypes such as improved oxalate degradation and increased antifungal activity at pH 6 or higher. Improved efficacy in oxalate degradation by ΔCmpacC-29 was consistent with the enhanced expression level of Cmoxdc1 coding for oxalate decarboxylase. CmpacC transcriptional activation of Cmch1 and Cmg1 and repression of Cmoxdc1 were verified by the presence of the PacC/Rim101 consensus binding-motifs in gene promoter regions and by the promoter DNA-binding assays. This study suggests that CmpacC plays an activator role in regulation of C. minitans mycoparasitism, whereas plays a repressor role in regulation of oxalate degradation and possibly antifungal activity of C. minitans.
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Affiliation(s)
- Yi Lou
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Yongchao Han
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China.,The Institute of Industrial Crops of Hubei Academy of Agricultural Sciences, Wuhan, 430064, China
| | - Long Yang
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Mingde Wu
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jing Zhang
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Jiasen Cheng
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Moying Wang
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Daohong Jiang
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
| | - Weidong Chen
- United States Department of Agriculture, Agricultural Research Service, Washington State University, Pullman, WA, USA
| | - Guoqing Li
- State Key Laboratory of Agricultural Microbiology and Key Laboratory of Plant Pathology of Hubei Province, Huazhong Agricultural University, Wuhan, 430070, China
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Siozios S, Tosi L, Ferrarini A, Ferrari A, Tononi P, Bellin D, Maurhofer M, Gessler C, Delledonne M, Pertot I. Transcriptional Reprogramming of the Mycoparasitic Fungus Ampelomyces quisqualis During the Powdery Mildew Host-Induced Germination. PHYTOPATHOLOGY 2015; 105:199-209. [PMID: 25185010 DOI: 10.1094/phyto-01-14-0013-r] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/03/2023]
Abstract
Ampelomyces quisqualis is a mycoparasite of a diverse range of phytopathogenic fungi associated with the powdery mildew disease. Among them are several Erysiphaceae species with great economic impact on high-value crops such as grape. Due to its ability to parasitize and prevent the spread of powdery mildews, A. quisqualis has received considerable attention for its biocontrol potential. However, and in sharp contrast to the extensively studied biocontrol species belonging to the genus Trichoderma, little is known about the biology of A. quisqualis at the molecular and genetic levels. We present the first genome-wide transcription profiling in A. quisqualis during host-induced germination. A total of 1,536 putative genes showed significant changes in transcription during the germination of A. quisqualis. This finding denotes an extensive transcriptional reprogramming of A. quisqualis induced by the presence of the host. Several upregulated genes were predicted to encode for putative mycoparasitism-related proteins such as secreted proteases, virulence factors, and proteins related to toxin biosynthesis. Our data provide the most comprehensive sequence resource currently available for A. quisqualis in addition to offering valuable insights into the biology of A. quisqualis and its mycoparasitic lifestyle. Eventually, this may improve the biocontrol capacity of this mycoparasite.
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Yun H, Sim J, An H, Lee J, Lee HS, Shin YK, Paek SM, Suh YG. Design and synthesis of a macrosphelide A-biotin chimera. Org Biomol Chem 2014; 12:7127-35. [DOI: 10.1039/c4ob01028k] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
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Zeng LM, Zhang J, Han YC, Yang L, Wu MD, Jiang DH, Chen W, Li GQ. Degradation of oxalic acid by the mycoparasiteConiothyrium minitansplays an important role in interacting withSclerotinia sclerotiorum. Environ Microbiol 2014; 16:2591-610. [DOI: 10.1111/1462-2920.12409] [Citation(s) in RCA: 38] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/21/2013] [Accepted: 12/06/2013] [Indexed: 12/26/2022]
Affiliation(s)
- Li-Mei Zeng
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
| | - Jing Zhang
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
| | - Yong-Chao Han
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
| | - Long Yang
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
| | - Ming-de Wu
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
| | - Dao-Hong Jiang
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
| | - Weidong Chen
- United States Department of Agriculture; Agricultural Research Service; Washington State University; Pullman WA USA
| | - Guo-Qing Li
- State Key Laboratory of Agricultural Microbiology; Key Laboratory of Plant Pathology of Hubei Province; Huazhong Agricultural University; Wuhan China
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Qin L, Gong X, Xie J, Jiang D, Cheng J, Li G, Huang J, Fu Y. Phosphoribosylamidotransferase, the first enzyme for purine de novo synthesis, is required for conidiation in the sclerotial mycoparasite Coniothyrium minitans. Fungal Genet Biol 2011; 48:956-65. [PMID: 21763446 DOI: 10.1016/j.fgb.2011.06.007] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2010] [Revised: 04/15/2011] [Accepted: 06/22/2011] [Indexed: 11/29/2022]
Abstract
Coniothyrium minitans is an important sclerotial parasite of the fungal phytopathogen, Sclerotinia sclerotiorum. Previously, we constructed a T-DNA insertional library, and screened for many conidiation-deficient mutants from this library. Here, we report a T-DNA insertional mutant ZS-1T21882 that completely lost conidiation. In mutant ZS-1T21882, the T-DNA was integrated into a gene (CmPrat-1) which encodes phosphoribosylamidotransferase (PRAT, EC 2.4.2.14), an enzyme catalyzing the first committed step in de novo purine nucleotide synthesis. Gene replacement and complementation experiments confirmed that phosphoribosylamidotransferase is essential for conidiation of C. minitans. Mutant ZS-1T21882 did not grow on modified Czapek-Dox broth (MCD), but it grew well on MCD amended with IMP or AMP. The conidial production of this mutant was dependent on the dosage of IMP amended. At low concentrations, such as 0.1 mM and 0.25 mM, the mutant produced very few pycnidia, while up to 0.75 mM or higher, the conidiation of this mutant was restored completely. cAMP could not restore the conidiation of mutant ZS-1T21882 when amended into MCD, but could when amended into PDA. Neither GMP nor cGMP could restore the conidiation in MCD or in PDA. Our findings suggest that phosphoribosylamidotransferase is essential for conidiation of C. minitans via adenosine related molecules. Furthermore, when dual cultured with its host, this mutant produced conidia in the host mycelium and on the sclerotia of S. sclerotiorum, but not in dead mycelium or on dead sclerotia, suggesting that C. minitans is likely to able to obtain adenosine or related components from its host during parasitization.
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Affiliation(s)
- Li Qin
- State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan 430070, Hubei Province, China
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Cyclic GMP as a second messenger in the nitric oxide-mediated conidiation of the mycoparasite Coniothyrium minitans. Appl Environ Microbiol 2010; 76:2830-6. [PMID: 20208018 DOI: 10.1128/aem.02214-09] [Citation(s) in RCA: 31] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
Understanding signaling pathways that modulate conidiation of mitosporic fungi is of both practical and theoretical importance. The enzymatic origin of nitric oxide (NO) and its roles in conidiation by the sclerotial parasite Coniothyrium minitans were investigated. The activity of a nitric oxide synthase-like (NOS-like) enzyme was detected in C. minitans as evidenced by the conversion of l-arginine to l-citrulline. Guanylate cyclase (GC) activity was also detected indirectly in C. minitans with the GC-specific inhibitor 1H-[1,2,4]oxadiazolo[4,3-a]quinoxalin-1-one (ODQ), which significantly reduced production of cyclic GMP (cGMP). The dynamics of NOS activity were closely mirrored by the cGMP levels during pycnidial development, with the highest levels of both occurring at the pycnidial initiation stage of C. minitans. Furthermore, the NO donor, sodium nitroprusside (SNP), stimulated the accumulation of cGMP almost instantly in mycelium during the hyphal growth stage. When the activity of NOS or GC was inhibited with Nomega-nitro-l-arginine or ODQ, conidial production of C. minitans was suppressed or completely eliminated; however, the suppression of conidiation by ODQ could be reversed by exogenous cGMP. The results also showed that conidiation of an l-arginine auxotroph could be restored by the NO donor SNP, but not by cGMP. Thus, NO-mediated conidiation has more than one signal pathway, including the cGMP signal pathway and another yet-unknown pathway, and both are essential for conidiation in C. minitans.
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Scientific Opinion on the maintenance of the list of QPS microorganisms intentionally added to food or feed (2009 update). EFSA J 2009. [DOI: 10.2903/j.efsa.2009.1431] [Citation(s) in RCA: 29] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023] Open
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Tomprefa N, McQuilken MP, Hill RA, Whipps JM. Antimicrobial activity of Coniothyrium minitans and its macrolide antibiotic macrosphelide A. J Appl Microbiol 2009; 106:2048-56. [PMID: 19298513 DOI: 10.1111/j.1365-2672.2009.04174.x] [Citation(s) in RCA: 20] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS Assessment of antimicrobial activity of the mycoparasite Coniothyrium minitans and its macrolide antibiotic macrosphelide A. METHODS AND RESULTS Thirteen isolates of C. minitans were tested for ability to inhibit a number of filamentous fungi, yeasts, oomycetes and bacteria in agar based tests. Activity was found against some ascomycetes, basidiomycetes, oomycetes and Gram-positive bacteria, but not against zygomycetes, yeasts or Gram-negative bacteria tested. Six C. minitans isolates (Conio, Contans, IVT1, CM/AP/3118, B279/1, A1/327/1) were found to produce macrosphelide A in liquid culture and no other antibiotics were detected. On agar, macrosphelide A inhibited growth of some ascomycetes, basidiomycetes, oomycetes and all four Gram-positive bacteria tested, including the medically important Staphylococcus aureus with a minimum inhibitory concentration of < or =500 microg ml(-1). There was no inhibition observed against the yeasts and Gram-negative bacteria when macrosphelide A was tested at 700 microg ml(-1). CONCLUSIONS The spectrum and level of activity of macrosphelide A produced by C. minitans against micro-organisms are extended markedly compared to previous reports. SIGNIFICANCE AND IMPACT OF THE STUDY Macrosphelide A was effective against Staph. aureus. Further study on the control of this bacterium is merited in view of the development of antibiotic resistance.
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Affiliation(s)
- N Tomprefa
- Warwick HRI, University of Warwick, Wellesbourne, Warwick, UK
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Smith SN, Prince M, Whipps JM. Characterization of Sclerotinia and mycoparasite Coniothyrium minitans interaction by microscale co-culture. Lett Appl Microbiol 2008; 47:128-33. [PMID: 18565137 DOI: 10.1111/j.1472-765x.2008.02392.x] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
AIMS To characterize the interaction of Sclerotinia sclerotiorum and S. minor with strains of the mycoparasite and commercial biocontrol agent Coniothyrium minitans using novel perfusion chamber gasket co-culture. METHODS AND RESULTS Sclerotinia were cultured in perfusion chamber gaskets and then flooded with Coniothyrium conidia. After germination, Coniothyrium failed to show any form of directed growth, making contact with Sclerotinia hyphae in a random manner. In turn, some Coniothyrium hyphae coiled round Sclerotinia counterparts and although no intracellular growth was observed, Coniothyrium proliferated, while the hyphae of Sclerotinia became vacuolated and lost the cytoplasm. When co-cultures of Sclerotinia with Coniothyrium were flooded with FITC-lectins, small difference in fluorescence between the fungi was found with FITC-Con A suggesting that cell walls of both the species exposed mannose. In contrast, Coniothyrium fluoresced poorly in comparison with Sclerotinia when FITC-wheat germ agglutinin was used, indicating a marked paucity of N-acetylglucosamine exposure by cell walls of Coniothyrium, hence reduced exposure to chitinolytic enzyme action. CONCLUSIONS, SIGNIFICANCE AND IMPACT OF THE STUDY The approach employed supported direct sequential microscopic observation of Coniothyrium and Sclerotinia as well as the utilization of representative fluorescent moieties to characterize relative carbohydrate cell wall exposure.
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Affiliation(s)
- S N Smith
- Life and Health Sciences, Aston University, The Triangle, Birmingham, UK.
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Li M, Gong X, Zheng J, Jiang D, Fu Y, Hou M. Transformation of Coniothyrium minitans, a parasite of Sclerotinia sclerotiorum, with Agrobacterium tumefaciens. FEMS Microbiol Lett 2005; 243:323-9. [PMID: 15686831 DOI: 10.1016/j.femsle.2004.12.033] [Citation(s) in RCA: 43] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/06/2004] [Revised: 12/17/2004] [Accepted: 12/17/2004] [Indexed: 11/23/2022] Open
Abstract
Coniothyrium minitans is a potential biological control agent of the plant pathogenic fungus Sclerotinia sclerotiorum. In this research, T-DNA insertional transformation of strain ZS-1 of C. minitans mediated by Agrobacterium tumefaciens was obtained, with optimization of spore maturity for transformation. After confirmation by PCR, transformants were subjected to Southern blot analysis, and results showed that more than 82.7% of transformants had single T-DNA insertions, and 12.1% of transformants had two copies T-DNA insertions. The genomic DNA segments of transformants flanking the T-DNA could be amplified from both borders with TAIL-PCR. Four types of mutants were screened and identified from the T-DNA insertional library, which comprised sporulation deficient mutants, pathogenicity deficient mutants, pigment change mutants and antibiotic deficient mutant, and some of the mutants were described; the number and frequency of each type of mutant from the library were calculated, and the frequency of each type is 3.27 x 10(-3), 1.0 x 10(-4), 1.4 x 10(-4), 2.5 x 10(-4), respectively. The successful creation of the T-DNA insertional transformation library may help us to unravel the interaction between a parasite and its host at a molecular level, to clarify the differentiation and development of this fungus, and to analyze and clone functional genes from the biocontrol microorganism in tripartite associations.
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Affiliation(s)
- Moxiao Li
- Plant Pathology, College of Plant Science and Technology, Huazhong Agricultural University, Wuhan 430070, PR China
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