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Toxigenic Fungi and Mycotoxins
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Toxigenic Fungi and Mycotoxins

A special issue of Journal of Fungi (ISSN 2309-608X). This special issue belongs to the section "Fungal Genomics, Genetics and Molecular Biology".

Deadline for manuscript submissions: closed (20 February 2024) | Viewed by 1618

Special Issue Editor

Prof. Dr. Zhenhong Zhuang

E-Mail Website
Guest Editor
Key Laboratory of Pathogenic Fungi and Mycotoxins of Fujian Province, Key Laboratory of Biopesticide and Chemical Biology of Education Ministry, Proteomic Research Center, and School of Life Sciences, Fujian Agriculture and Forestry University, Fuzhou 350002, China
Interests: the regulatory mechanism of morphogenesis, secondary metabolism and pathogenicity, especially in the field of epigenetics
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

There are an estimated 1.5 million species of fungi, of which toxigenic fungi including plant pathogens, fungi that thrive and generate mycotoxins on cellular senescence or stressed plants, fungi that invade crops early and make feedstock more vulnerable to contamination after harvesting and fungi existing in decaying plants or soil debris that arise on emerging kernels. Toxigenic fungi are identified on the basis of their colony morphology, species-specific PCR primers targeting ITS regions and the amplification of cluster genes involved in mycotoxin synthesis pathways. Toxigenic fungi, particularly those from the genera Aspergillus, Penicillium and Fusarium, accumulate secondary metabolites known as mycotoxins during target infection. A huge range of toxic effects of mycotoxins are reported in people exposed to cereals contaminated with mycotoxins, including mild gastrointestinal infection, growth retardation, immunosuppression, teratogenicity, mutagenicity, etc. Therefore, it is essential to diagnose the toxigenic fungi and minimize mycotoxin levels.

In recent years, the development of molecular biology tools has led to the development of faster, more reliable diagnostic techniques for toxigenic fungi and mycotoxins, providing valuable insights into the mechanisms underlying diagnosis and biocontrol. The aim of this Special Issue is to characterize the morphogenesis and pathogenicity of toxigenic fungi, biosynthesis of mycotoxins and toxic effects of mycotoxins through comprehensive reviews, original studies and novel perspectives.

Prof. Dr. Zhenhong Zhuang
Guest Editor

Manuscript Submission Information

Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All submissions that pass pre-check are peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.

Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Journal of Fungi is an international peer-reviewed open access monthly journal published by MDPI.

Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2600 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.

Keywords

  • toxigenic fungi
  • morphogenesis
  • pathogenicity
  • mycotoxins

Published Papers (2 papers)

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Research

18 pages, 4551 KiB  
Article
The Response of Naturally Based Coatings and Citrus Fungicides to the Development of Four Postharvest Fungi
by Lizette Serrano-Molina, Mónica Hernández-López, Dolores Azucena Salazar-Piña, Silvia Bautista-Baños and Margarita de Lorena Ramos-García
J. Fungi 2024, 10(5), 309; https://doi.org/10.3390/jof10050309 - 24 Apr 2024
Viewed by 325
Abstract
The tomato (Licopersicon esculentum Mill.) is considered to be one of the products with the highest demand due to its nutritional value; however, it is susceptible to infection by fungi during its pre- and postharvest stages. In this research, three commercial products [...] Read more.
The tomato (Licopersicon esculentum Mill.) is considered to be one of the products with the highest demand due to its nutritional value; however, it is susceptible to infection by fungi during its pre- and postharvest stages. In this research, three commercial products (1% Citrocover, 1% Citro 80, and 0.002% Microdyn) and two coatings based on 1.0% chitosan/0.1% lime or 0.1% orange essential oils were evaluated in vitro and on Saladette tomatoes that were previously inoculated with four postharvest fungi. The application of the commercial citrus-based product Citrocover was highly effective in reducing the in vitro development of Aspergillus flavus, Fusarium oxysporum, and Colletotrichum gloeosporioides, but not Rhizopus stolonifer. The sanitizer Microdyn promoted infections with most fungi. Citrus-based products were effective in reducing infections with A. flavus in the tomatoes during storage. Overall, mycotoxin production was very low for all treatments. The use of commercial citrus-based products and coatings did not alter the weight loss, firmness, or total soluble solid contents of the treated tomatoes. The changes observed were, rather, associated with the normal ripening process of Saladette tomatoes. The commercial citrus-based products satisfactorily controlled the in vitro growth of the fungi Aspergillus flavus, Fusarium oxysporum, and Colletotrichum gloeosporioides. Full article
(This article belongs to the Special Issue Toxigenic Fungi and Mycotoxins)
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16 pages, 4565 KiB  
Article
Activation of Ustilaginoidin Biosynthesis Gene uvpks1 in Villosiclava virens Albino Strain LN02 Influences Development, Stress Responses, and Inhibition of Rice Seed Germination
by Mengyao Xue, Xuwen Hou, Gan Gu, Jie Dong, Yonglin Yang, Xiaoqian Pan, Xuan Zhang, Dan Xu, Daowan Lai and Ligang Zhou
J. Fungi 2024, 10(1), 31; https://doi.org/10.3390/jof10010031 - 31 Dec 2023
Viewed by 929
Abstract
Villosiclava virens (anamorph: Ustilaginoidea virens) is the pathogen of rice false smut (RFS), which is a destructive rice fungal disease. The albino strain LN02 is a natural white-phenotype mutant of V. virens due to its incapability to produce toxic ustilaginoidins. In this [...] Read more.
Villosiclava virens (anamorph: Ustilaginoidea virens) is the pathogen of rice false smut (RFS), which is a destructive rice fungal disease. The albino strain LN02 is a natural white-phenotype mutant of V. virens due to its incapability to produce toxic ustilaginoidins. In this study, three strains including the normal strain P1, albino strain LN02, and complemented strain uvpks1C-1 of the LN02 strain were employed to investigate the activation of the ustilaginoidin biosynthesis gene uvpks1 in the albino strain LN02 to influence sporulation, conidia germination, pigment production, stress responses, and the inhibition of rice seed germination. The activation of the ustilaginoidin biosynthesis gene uvpks1 increased fungal tolerances to NaCl-induced osmotic stress, Congo-red-induced cell wall stress, SDS-induced cell membrane stress, and H2O2-induced oxidative stress. The activation of uvpks1 also increased sporulation, conidia germination, pigment production, and the inhibition of rice seed germination. In addition, the activation of uvpks1 was able to increase the mycelial growth of the V. virens albino strain LN02 at 23 °C and a pH from 5.5 to 7.5. The findings help in understanding the effects of the activation of uvpks1 in albino strain LN02 on development, pigment production, stress responses, and the inhibition of rice seed germination by controlling ustilaginoidin biosynthesis. Full article
(This article belongs to the Special Issue Toxigenic Fungi and Mycotoxins)
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