1
|
Tarafder M, Datta B. Deciphering β-tubulin gene of carbendazim resistant Fusarium solani isolate and its comparison with other Fusarium species. Curr Genet 2022; 68:429-447. [PMID: 35419713 DOI: 10.1007/s00294-022-01238-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/10/2022] [Revised: 03/19/2022] [Accepted: 03/23/2022] [Indexed: 11/03/2022]
Abstract
Exploration of molecular structure of β-tubulin is key to understand mechanism of action of carbendazim since its activity depends on strong binding to β-tubulin. Resistance against the fungicide is often associated with mutation in β-tubulin gene. A full-length (1619 bp) β-tubulin gene has been cloned and sequenced from a carbendazim resistant and a sensitive isolates of F. solani isolated from agricultural fields of Murshidabad (24.23 °N, 88.25 °E), West Bengal, India. Phylogenetic position of the isolates was confirmed using internal transcribed spacer and β-tubulin gene sequences. In the β-tubulin based phylogenetic tree, Fusarium species with available data were clustered in nine species complexes and members of both F. solani species complex and F. fujikuroi species complex were distributed into three clades each. The β-tubulin gene of F. solani was found to be shortest due to least number of non-coding sequences indicating its primitiveness among the Fusarium species. The coding region (G + C 58.54%) was organized into five exons. The protein has 446 amino acid, 49.834 KD molecular weight and 4.64 isoelectric point. Amino acid sequence of the resistant and the sensitive isolates were identical, suggesting that the mechanism of carbendazim resistance in the F. solani isolate was not due to point mutation in β-tubulin gene. The secondary and tertiary structure of β-tubulin were similar in all the species except F. oxysporum f.sp. cubense. The identification of binding sites for GDP, carbendazim and α-tubulin would resolve how carbendazim prevents tubulin polymerization. All the data are useful to design tubulin-targeted fungicide with better performance.
Collapse
Affiliation(s)
- Mrinmay Tarafder
- Mycology and Plant Pathology Research Laboratory, Department of Botany, University of Kalyani, Kalyani, West Bengal, 741235, India
| | - Bejoysekhar Datta
- Mycology and Plant Pathology Research Laboratory, Department of Botany, University of Kalyani, Kalyani, West Bengal, 741235, India.
| |
Collapse
|
2
|
Resistance mechanisms and fitness of pyraclostrobin-resistant isolates of Lasiodiplodia theobromae from mango orchards. PLoS One 2021; 16:e0253659. [PMID: 34161390 PMCID: PMC8221464 DOI: 10.1371/journal.pone.0253659] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/07/2021] [Accepted: 06/09/2021] [Indexed: 11/19/2022] Open
Abstract
Background Stem-end rot, caused by Lasiodiplodia theobromae (Pat.) Griffon & Maubl is a serious postharvest disease in mango. In China, a high prevalence of the QoI fungicides resistance has been reported in the last decade. The study aimed to discuss factors determining rapid development of pyraclostrobin-resistance and its resistance mechanisms. Methods To determine the resistance stability and fitness of pyraclostrobin resistance in L. theobromae, three phenotypes of pyraclostrobin resistance were compared and analyzed for the EC50 values, mycelial growth, virulence and temperature sensitivity and osmotic stress sensitivity. The relative conductivity and enzyme activities of different phenotypes were compared under fungicide stress to explore possible biochemical mechanisms of pyraclostrobin resistance in L. theobromae. The Cytb gene sequences of different phenotypes were analysed. Results All isolates retained their original resistance phenotypes during the 10 subcultures on a fungicide-free PDA, factor of sensitivity change (FSC) was approximately equal to 1. The resistance-pyraclostrobin of the field isolates should be relatively stable. Two pyraclostrobin-resistant phenotypes shared similar mycelial growth, virulence and temperature sensitivity with pyraclostrobin-sensitive phenotype. After treated by pyraclostrobin, the relative conductivity of the sensitive phenotype was significantly increased. The time of Pyr-R and Pyr-HR reached the most conductivity was about 8–10 times than that of Pyr-S, the time for the maximum value appearance showed significant differences between sensitive and resistant phenotypes. The activities of Glutathione S-transferase (GST), catalase (CAT) and peroxidase (POD) of Pyr-HR were 1.78, 5.45 and 1.65 times respectively, significantly higher than that of Pyr-S after treated by 200 mg/l pyraclostrobin. Conclusion The results showed that the pyraclostrobin-resistant phenotypes displayed high fitness and high-risk. The nucleotide sequences were identical among all pyraclostrobin-resistant and -sensitive isolates. The pyraclostrobin resistance was not attributable to Cytb gene alterations, there may be some of other resistance mechanisms. Differential response of enzyme activity and cell membrane permeability were observed in resistant- and sensitive-isolates suggesting a mechanism of metabolic resistance.
Collapse
|
3
|
Advances in Fusarium drug resistance research. J Glob Antimicrob Resist 2021; 24:215-219. [PMID: 33460843 DOI: 10.1016/j.jgar.2020.12.016] [Citation(s) in RCA: 17] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/17/2020] [Revised: 11/19/2020] [Accepted: 12/16/2020] [Indexed: 12/12/2022] Open
Abstract
Fusarium species cause many diseases in plants and humans, which results in a great number of economic losses every year. The management of plant diseases and related human diseases caused by Fusarium is challenging as many kinds of Fusarium may be intrinsically resistant to antifungal drugs, not to mention the fact that they can acquire drug resistance, which is common in clinical practice. To date, the drug resistance of Fusarium is mainly related to target alterations, drug efflux and biofilm formation. This article reviews recent studies related to the mechanism of Fusarium resistance, and summarizes the key molecules affecting resistance.
Collapse
|
4
|
Shostak K, Bonner C, Sproule A, Thapa I, Shields SWJ, Blackwell B, Vierula J, Overy D, Subramaniam R. Activation of biosynthetic gene clusters by the global transcriptional regulator TRI6 in Fusarium graminearum. Mol Microbiol 2020; 114:664-680. [PMID: 32692880 DOI: 10.1111/mmi.14575] [Citation(s) in RCA: 14] [Impact Index Per Article: 3.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/25/2020] [Revised: 07/06/2020] [Accepted: 07/12/2020] [Indexed: 12/30/2022]
Abstract
In F. graminearum, the transcription factor TRI6 positively regulates the trichothecene biosynthetic gene cluster (BGC) leading to the production of the secondary metabolite 15-acetyl deoxynivalenol. Secondary metabolites are not essential for survival, instead, they enable the pathogen to successfully infect its host. F. graminearum has the potential to produce a diverse array of secondary metabolites (SMs). However, given high functional specificity and energetic cost, most of these clusters remain silent, unless the organism is subjected to an environment conducive to SM production. Alternatively, secondary metabolite gene clusters (SMCs) can be activated by genetically manipulating their activators or repressors. In this study, a combination of transcriptomic and metabolomics analyses with a deletion and overexpressor mutants of TRI6 was used to establish the role of TRI6 in the regulation of several BGCs in F. graminearum. Evidence for direct and indirect regulation of BGCs by TRI6 was obtained by chromatin immunoprecipitation and yeast two-hybrid experiments. The results showed that the trichothecene genes are under direct control, while the gramillin gene cluster is indirectly controlled by TRI6 through its interaction with the pathway-specific transcription factor GRA2.
Collapse
Affiliation(s)
- Kristina Shostak
- Department of Biology, Carleton University, Ottawa, ON, Canada.,Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Christopher Bonner
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Amanda Sproule
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Indira Thapa
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Samuel W J Shields
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Barbara Blackwell
- Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - John Vierula
- Department of Biology, Carleton University, Ottawa, ON, Canada
| | - David Overy
- Department of Biology, Carleton University, Ottawa, ON, Canada.,Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| | - Rajagopal Subramaniam
- Department of Biology, Carleton University, Ottawa, ON, Canada.,Ottawa Research and Development Centre, Agriculture and Agri-Food Canada, Ottawa, ON, Canada
| |
Collapse
|
5
|
Three-Locus Sequence Identification and Differential Tebuconazole Sensitivity Suggest Novel Fusarium equiseti Haplotype from Trinidad. Pathogens 2020; 9:pathogens9030175. [PMID: 32121520 PMCID: PMC7157627 DOI: 10.3390/pathogens9030175] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/14/2020] [Revised: 02/20/2020] [Accepted: 02/23/2020] [Indexed: 12/14/2022] Open
Abstract
The Fusarium incarnatum-equiseti species complex (FIESC) consists of 33 phylogenetic species according to multi-locus sequence typing (MLST) and Genealogical Concordance Phylogenetic Species Recognition (GCPSR). A multi-locus dataset consisting of nucleotide sequences of the translation elongation factor (EF-1α), calmodulin (CAM), partial RNA polymerase largest subunit (RPB1), and partial RNA polymerase second largest subunit (RPB2), was generated to distinguish among phylogenetic species within the FIESC isolates infecting bell pepper in Trinidad. Three phylogenetic species belonged to the Incarnatum clade (FIESC-15, FIESC-16, and FIESC-26), and one species belonged to the Equiseti clade (FIESC-14). Specific MLST types were sensitive to 10 µg/mL of tebuconazole fungicide as a discriminatory dose. The EC50 values were significantly different among the four MLST groups, which were separated into two homogeneous groups: FIESC-26a and FIESC-14a, demonstrating the “sensitive” azole phenotype and FIESC-15a and FIESC-16a as the “less sensitive” azole phenotype. CYP51C sequences of the Trinidad isolates, although under positive selection, were without any signatures of recombination, were highly conserved, and were not correlated with these azole phenotypes. CYP51C sequences were unable to resolve the FIESC isolates as phylogenetic inference indicated polytomic branching for these sequences. This data is important to different research communities, including those studying Fusarium phytopathology, mycotoxins, and public health impacts.
Collapse
|
6
|
Toxicological effects of some antiparasitic drugs on equine liver glutathione S-Transferase enzyme activity. J Pharm Biomed Anal 2019; 180:113048. [PMID: 31887670 DOI: 10.1016/j.jpba.2019.113048] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2019] [Revised: 12/08/2019] [Accepted: 12/12/2019] [Indexed: 02/06/2023]
Abstract
Benzimidazoles are antiparasitic drugs having an extensive application field like agriculture, medicine, and especially in veterinary medicine. In this study, we report the effect of some benzimidazole drugs such as ricobendazole (RBZ), thiabendazole (TBZ), albendazole (ALBA) and oxfendazole (OFZ) on glutathione s-transferase (GST) enzyme activity. The kinetics studies, IC50 and Ki values of the tested drugs on GSTs enzyme activity were investigated. The obtained ranking of IC50 values were found to be approximately RBZ (53.31 μM, r2: 0.9778) < OFZ (57.75 μM, r2: 0.9630) < ALBA (63.00 μM, r2: 0.9443) < TBZ (69.30 μM, r2: 0.9491). And the obtained ranking of Ki values of the tested drugs (RBZ, TBZ, ALBA, and OFZ) for GSTs enzyme activity was found to be approximately 26.37 ± 2.96, 44.01 ± 5.74, 39.82 ± 3.98 and 30.14 ± 3.03 μM, respectively. Experimental results showed that tested the benzimidazoles drugs have some significant inhibitory effect on GSTs enzyme activity. And also, it was determined that RBZ, ALBA, OFZ are competitive inhibition, but TBZ is non-competitive inhibitors on GSTs enzyme activity. RBZ drug showed the best inhibitory effect with the lowest Ki value.
Collapse
|
7
|
Huang D, Qiu F, Zhang Z, Shi L, Cao C, Ke S. Synthesis and Antifungal Activity of Substituted 2‐Aryl Benzimidazoles Derivatives. J Heterocycl Chem 2019. [DOI: 10.1002/jhet.3639] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
Affiliation(s)
- Daye Huang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research CentreHubei Academy of Agricultural Sciences Wuhan 430064 China
| | - Fang Qiu
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research CentreHubei Academy of Agricultural Sciences Wuhan 430064 China
| | - Zhigang Zhang
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research CentreHubei Academy of Agricultural Sciences Wuhan 430064 China
| | - Liqiao Shi
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research CentreHubei Academy of Agricultural Sciences Wuhan 430064 China
| | - Chunxia Cao
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research CentreHubei Academy of Agricultural Sciences Wuhan 430064 China
| | - Shaoyong Ke
- National Biopesticide Engineering Research Centre, Hubei Biopesticide Engineering Research CentreHubei Academy of Agricultural Sciences Wuhan 430064 China
| |
Collapse
|
8
|
Yang Y, Di Zeng G, Zhang Y, Xue R, Hu YJ. Molecular and Biochemical Characterization of Carbendazim-Resistant Botryodiplodia theobromae Field Isolates. PLANT DISEASE 2019; 103:2076-2082. [PMID: 31194616 DOI: 10.1094/pdis-01-19-0148-re] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/09/2023]
Abstract
Stem-end rot caused by Botryodiplodia theobromae is a destructive disease of mango. B. theobromae field isolates resistant to carbendazim (MBC) were collected in Hainan Province, China. In this study, the characteristics of these field isolates with resistance to MBC were investigated. The resistance of B. theobromae isolates to MBC was stably inherited. Both the MBC-resistant and MBC-sensitive isolates had similar mycelial growth rates, pathogenicity, sensitivity to high glucose, glycerol content, and peroxidase activity. Compared with MBC-sensitive isolates, MBC-resistant isolates were more sensitive to low temperature and had a significant decrease in sensitivity to high NaCl and a significant increase in catalase (CAT) and glutathione S-transferase (GST) activities. After MBC treatment, the cell membrane permeability of the sensitive isolates was markedly increased compared with that of the resistant isolates. Analysis of the β-tubulin gene sequence revealed point mutations resulting in substitutions at codon 198 from glutamic acid (GAG) to alanine (GCG) in moderately resistant isolates, and at codon 200 from phenylalanine (TTC) to tyrosine (TAC) in highly resistant isolates. These β-tubulin gene mutations were consistently associated with MBC resistance. Overall, we infer that the altered cell membrane permeability and the increase in CAT and GST activities of the resistant isolates are linked to MBC resistance.
Collapse
Affiliation(s)
- Ye Yang
- Key Lab of Green Prevention and Control of Tropical Plant Diseases and Pests, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
| | - Geng Di Zeng
- Key Lab of Green Prevention and Control of Tropical Plant Diseases and Pests, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
| | - Yu Zhang
- Key Lab of Green Prevention and Control of Tropical Plant Diseases and Pests, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
| | - Ru Xue
- Key Lab of Green Prevention and Control of Tropical Plant Diseases and Pests, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
| | - Ya Juan Hu
- Key Lab of Green Prevention and Control of Tropical Plant Diseases and Pests, Institute of Tropical Agriculture and Forestry, Hainan University, Haikou, Hainan 570228, China
| |
Collapse
|
9
|
Zhao J, Lin Z, Fang S, Xie X, Wang H, Pang Z, Zhang J, Kong X, Lei M. Photoexcitation of self-n-doped fullerene ammonium halides: The role of halide ion and a possible synergistic dual-redox cycle mechanism within their aggregate. J Photochem Photobiol A Chem 2019. [DOI: 10.1016/j.jphotochem.2019.01.008] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
|
10
|
Gullner G, Komives T, Király L, Schröder P. Glutathione S-Transferase Enzymes in Plant-Pathogen Interactions. FRONTIERS IN PLANT SCIENCE 2018; 9:1836. [PMID: 30622544 PMCID: PMC6308375 DOI: 10.3389/fpls.2018.01836] [Citation(s) in RCA: 217] [Impact Index Per Article: 36.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/28/2018] [Accepted: 11/27/2018] [Indexed: 05/18/2023]
Abstract
Plant glutathione S-transferases (GSTs) are ubiquitous and multifunctional enzymes encoded by large gene families. A characteristic feature of GST genes is their high inducibility by a wide range of stress conditions including biotic stress. Early studies on the role of GSTs in plant biotic stress showed that certain GST genes are specifically up-regulated by microbial infections. Later numerous transcriptome-wide investigations proved that distinct groups of GSTs are markedly induced in the early phase of bacterial, fungal and viral infections. Proteomic investigations also confirmed the accumulation of multiple GST proteins in infected plants. Furthermore, functional studies revealed that overexpression or silencing of specific GSTs can markedly modify disease symptoms and also pathogen multiplication rates. However, very limited information is available about the exact metabolic functions of disease-induced GST isoenzymes and about their endogenous substrates. The already recognized roles of GSTs are the detoxification of toxic substances by their conjugation with glutathione, the attenuation of oxidative stress and the participation in hormone transport. Some GSTs display glutathione peroxidase activity and these GSTs can detoxify toxic lipid hydroperoxides that accumulate during infections. GSTs can also possess ligandin functions and participate in the intracellular transport of auxins. Notably, the expression of multiple GSTs is massively activated by salicylic acid and some GST enzymes were demonstrated to be receptor proteins of salicylic acid. Furthermore, induction of GST genes or elevated GST activities have often been observed in plants treated with beneficial microbes (bacteria and fungi) that induce a systemic resistance response (ISR) to subsequent pathogen infections. Further research is needed to reveal the exact metabolic functions of GST isoenzymes in infected plants and to understand their contribution to disease resistance.
Collapse
Affiliation(s)
- Gábor Gullner
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Tamas Komives
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Lóránt Király
- Plant Protection Institute, Centre for Agricultural Research, Hungarian Academy of Sciences, Budapest, Hungary
| | - Peter Schröder
- Research Unit for Comparative Microbiome Analyses, Department of Environmental Sciences, Helmholtz Zentrum München, German Research Center for Environmental Health (GmbH), Neuherberg, Germany
| |
Collapse
|