1
|
Argüelles-Moyao A, Ángeles-Argáiz R, Garibay-Orijel R, Pacheco-Aguilar JR. Isolation and Enzymatic Characterization of Fungal Strains from Grapevines with Grapevine Trunk Diseases Symptoms in Central Mexico. Curr Microbiol 2024; 81:200. [PMID: 38822158 DOI: 10.1007/s00284-024-03709-6] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/11/2023] [Accepted: 04/21/2024] [Indexed: 06/02/2024]
Abstract
Grapevine production is economically indispensable for the global wine industry. Currently, Mexico cultivates grapevines across approximately 28 500 hectares, ranking as the 26th largest producer worldwide. Given its significance, early detection of plant diseases' causal agents is crucial for preventing outbreaks. Consequently, our study aimed to identify fungal strains in grapevines exhibiting trunk disease symptoms and assess their enzymatic capabilities as indicators of their phytopathogenic potential. We collected plant cultivars, including Malbec, Shiraz, and Tempranillo, from Querétaro, Mexico. In the laboratory, we superficially removed the plant bark to prevent external contamination. Subsequently, the sample was superficially disinfected, and sawdust was generated from the symptomatic tissue. Cultivable fungal strains were isolated using aseptic techniques from the recovered sawdust. Colonies were grown on PDA and identified through a combination of microscopy and DNA-sequencing of the ITS and LSU nrDNA regions, coupled with a BLASTn search in the GenBank database. We evaluated the strains' qualitative ability to degrade cellulose, starch, and lignin using specific media and stains. Using culture morphology and DNA-sequencing, 13 species in seven genera were determined: Acremonium, Aspergillus, Cladosporium, Dydimella, Fusarium, Sarocladium, and Quambalaria. Some isolated strains were able to degrade cellulose or lignin, or starch. These results constitute the first report of these species community in the Americas. Using culture-dependent and DNA-sequencing tools allows the detection of fungal strains to continue monitoring for early prevention of the GTD.
Collapse
Affiliation(s)
- Andrés Argüelles-Moyao
- Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las campanas S/N, Col. Las campanas, C. P. 76010, Querétaro, Mexico.
| | - Rodolfo Ángeles-Argáiz
- Red Manejo Biotecnológico de Recursos, Instituto de Ecología, A.C., Carretera antigua a Coatepec 351, El Haya, C. P. 91073, Xalapa, Veracruz, Mexico
| | - Roberto Garibay-Orijel
- Laboratorio de Sistemática, Ecología y Aprovechamiento de Hongos Ectomicorrízicos, Departamento de Botánica, Instituto de Biología, Universidad Nacional Autónoma de Mexico, Circuito Exterior s/n, Ciudad Universitaria. Del., C.P. 04510, Coyoacán, CDMX, Mexico
| | - Juan-Ramiro Pacheco-Aguilar
- Facultad de Química, Universidad Autónoma de Querétaro, Cerro de las campanas S/N, Col. Las campanas, C. P. 76010, Querétaro, Mexico.
| |
Collapse
|
2
|
Tong SQ, Peng L, Wu YJ. Acremoniumcapsici and A.guizhouense, two new members of Acremonium (Hypocreales, Sordariomycetes) isolated from the rhizosphere soil of Capsicumannuum. MycoKeys 2023; 95:1-13. [PMID: 36761042 PMCID: PMC9836505 DOI: 10.3897/mycokeys.95.97062] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/02/2022] [Accepted: 12/12/2022] [Indexed: 01/06/2023] Open
Abstract
Two new species, Acremoniumcapsici and A.guizhouense, isolated from the rhizosphere soil of Capsicumannuum, are described and illustrated. Two-locus DNA sequences based on phylogeny, in combination with the morphology of the asexual morph, were used to characterize these species. In the phylogenetic tree, both new species clustered into a monophyletic clade with strong support, distinct from other previously known species of Acremonium. The new species differed from their allied species in their morphology.
Collapse
Affiliation(s)
- Shuo-Qiu Tong
- College of Life Sciences, Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, ChinaGuizhou UniversityGuiyangChina
| | - Lei Peng
- College of Life Sciences, Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, ChinaGuizhou UniversityGuiyangChina
| | - Yong-Jun Wu
- College of Life Sciences, Institute of Agro-bioengineering, Guizhou University, Guiyang 550025, ChinaGuizhou UniversityGuiyangChina
| |
Collapse
|
3
|
Li YH, Wu J, Xie MM, Zhang Y, Yang XW. Chemical constituents of the deep-sea-derived Acremonium alternatum and their chemotaxonomic significance. BIOCHEM SYST ECOL 2022. [DOI: 10.1016/j.bse.2022.104443] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/02/2022]
|
4
|
Lim HJ, Nguyen TTT, Lee HB. Six Newly Recorded Fungal Taxa from Freshwater Niche in Korea. MYCOBIOLOGY 2020; 49:105-121. [PMID: 37970186 PMCID: PMC10635171 DOI: 10.1080/12298093.2020.1862472] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 09/20/2020] [Revised: 12/02/2020] [Accepted: 12/06/2020] [Indexed: 11/17/2023]
Abstract
Six interesting fungal strains were isolated during a survey of fungal diversity associated with freshwater; these strains were designated as CNUFC YJW2-22, CNUFC MSW11-6-2, CNUFC HRS5-3, CNUFC MSW242-6, CNUFC DMW2-2, and CNUFC CPWS-1. Based on a polyphasic approach including phylogenetic analyses of internal transcribed space (ITS), large subunit (LSU), beta-tubulin (BenA), and calmodulin (CaM) gene sequences, morphological analyses, the six strains were found to be identical to Acremonium guillematii, Cadophora novi-eboraci, Lectera nordwiniana, Mycoarthris corallina, Talaromyces siamensis, and Tetracladium globosum, respectively. To our knowledge, these are the first records of the rare Lectera, Mycoarthris, and Tetracladium genera in Korea, and the first reports of A. guillematii, C. novi-eboraci, L. nordwiniana, M. corallina, T. siamensis, and Te. globosum in a freshwater environment.
Collapse
Affiliation(s)
- Hyo Jin Lim
- Environmental Microbiology Lab, Department of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Chonnam National University, Gwangju, Korea
| | - Thuong T. T Nguyen
- Environmental Microbiology Lab, Department of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Chonnam National University, Gwangju, Korea
| | - Hyang Burm Lee
- Environmental Microbiology Lab, Department of Agricultural Biological Chemistry, College of Agriculture & Life Sciences, Chonnam National University, Gwangju, Korea
| |
Collapse
|
5
|
Chen CH, Huang CL, He MS, Huang FC, Lin WC. Characterisation of the β-lactam resistance enzyme in Acanthamoeba castellanii. Int J Antimicrob Agents 2019; 55:105823. [PMID: 31622653 DOI: 10.1016/j.ijantimicag.2019.10.004] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/02/2019] [Revised: 09/27/2019] [Accepted: 10/05/2019] [Indexed: 12/11/2022]
Abstract
β-Lactams are well known as the best antibiotics for inhibiting the cross-linking between adjacent polysaccharide chains and peptides in the peptidoglycan layer of bacterial cell walls, causing bacterial cell lysis. There are no reports on the action of and resistance mechanisms to β-lactams in protozoa. Acanthamoeba castellanii is a free-living protozoan pathogen capable of causing blinding keratitis and fatal granulomatous encephalitis. When Acanthamoeba is exposed to harsh conditions, it differentiates into the cyst stage to avoid environmental stresses, such as drug treatment. In this study, it was shown that the mature encystation rate of A. castellanii is decreased by treatment with cefotaxime (CTX) and clavulanic acid (CLA); however, the drugs do not kill the amoeba. We hypothesise that β-lactam antibiotics may disturb synthesis of the double cell wall during the encystation process of Acanthamoeba. Interestingly, CTX is considered a powerful β-lactam, whereas CLA is considered a weak β-lactam but an efficient β-lactamase inhibitor. It was demonstrated that Acanthamoeba expresses β-lactamases to prevent inhibition of the encystation process by β-lactams. To reveal the functions of Acanthamoeba β-lactamases, a recombinant Acanthamoeba β-lactamase was produced in Escherichia coli that conferred resistance to β-lactams such as CTX, cefuroxime, penicillin and meropenem. Consequently, we suggest that Acanthamoeba produces enzymes similar to β-lactamases to avoid interference from the environment. Here we provide a new point of view on an important gene responsible for drug resistance and advocate for the development of more efficient treatment against Acanthamoeba infection.
Collapse
Affiliation(s)
- Chun-Hsien Chen
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Chao-Li Huang
- Institute of Tropical Plant Sciences and Microbiology, National Cheng Kung University, Tainan, Taiwan
| | - Ming-Shan He
- Department of Ophthalmology, Buddhist Tzu Chi General Hospital, Hualien, Taiwan; Department of Ophthalmology and Visual Science, Tzu Chi University, Hualien, Taiwan
| | - Fu-Chin Huang
- Department of Ophthalmology, National Cheng Kung University Hospital, College of Medicine, National Cheng Kung University, Tainan, Taiwan
| | - Wei-Chen Lin
- Institute of Basic Medical Sciences, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Parasitology, College of Medicine, National Cheng Kung University, Tainan, Taiwan; Department of Microbiology and Immunology, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
| |
Collapse
|
6
|
A New Meroterpene, A New Benzofuran Derivative and Other Constituents from Cultures of the Marine Sponge-Associated Fungus Acremonium persicinum KUFA 1007 and Their Anticholinesterase Activities. Mar Drugs 2019; 17:md17060379. [PMID: 31242631 PMCID: PMC6628235 DOI: 10.3390/md17060379] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/09/2019] [Revised: 06/18/2019] [Accepted: 06/22/2019] [Indexed: 12/04/2022] Open
Abstract
Previously unreported meroterpene, acremine S (1), and benzopyran derivative, acremine T (2), were isolated, together with lumichrome (3), ergosterol (4) and ergosterol 5,8-endoperoxide, from cultures of the marine sponge-associated fungus Acremonium persicinum KUF1007. The structure of the previously unreported compounds was established based on an extensive analysis of 1D and 2D NMR spectra as well as HRMS data. The absolute configurations of the stereogenic centers of 1 were established, unambiguously, based on NOESY correlations and comparison of calculated and experimental electronic circular dichroism (ECD) spectra. Compounds 1–3 were tested for their in vitro acetylcholinesterase and butyrylcholinesterase inhibitory activities.
Collapse
|
7
|
Identification and characterization of a marine-derived chitinolytic fungus, Acremonium sp. YS2-2. J Microbiol 2019; 57:372-380. [PMID: 30806979 DOI: 10.1007/s12275-019-8469-0] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/28/2018] [Revised: 11/02/2018] [Accepted: 11/26/2018] [Indexed: 10/27/2022]
Abstract
Chitin is the most abundant biopolymer in marine environments. To facilitate its utilization, our laboratory screened marine-derived fungal strains for chitinolytic activity. One chitinolytic strain isolated from seawater, designated YS2-2, was identified as Acremonium species based on morphological and phylogenetic analyses. Acremonium species are cosmopolitan fungi commonly isolated from both terrestrial and marine environments, but their chitinolytic activity is largely unknown. The extracellular crude enzyme of YS2-2 exhibited optimum chitinolytic activity at pH 6.0-7.6, 23-45°C, and 1.5% (w/v) NaCl. Degenerate PCR revealed the partial cDNA sequence of a putative chitinase gene, chiA, in YS2-2. The expression of chiA was dramatically induced in response to 1% (w/v) colloidal chitin compared to levels under starvation, chitin powder, and glucose conditions. Moreover, the chiA transcript levels were positively correlated with chitinolytic activities under various colloidal chitin concentrations, suggesting that ChiA mediates chitinolytic activity in this strain. Our results provide a basis for additional studies of marinederived chitinolytic fungi aimed at improving industrial applications.
Collapse
|