Control of Postharvest Fungal Diseases

A special issue of Journal of Fungi (ISSN 2309-608X). This special issue belongs to the section "Fungi in Agriculture and Biotechnology".

Deadline for manuscript submissions: 31 October 2024 | Viewed by 3421

Special Issue Editor


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Guest Editor
College of Science, Gansu Agricultural University, Lanzhou, China
Interests: plant disease; induced resistance; mycotoxin; disease control; pathogenic fungi; isolation and identification
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Special Issue Information

Dear Colleagues,

Disease of horticultural products, including fruit, vegetables, flowers, spice plants, and medicinal plants, is an important factor that leads to severe postharvest product decay, huge economic losses, and mycotoxin contamination. Horticultural products are susceptible to pathogenic fungi during the growth and storage period. Various pathogens that adapt to the local environment can infect different horticultural products, and they vary greatly. Therefore, the isolation and identification of pathogens causing horticultural product disease are highly necessary to control plant disease and develop specific fungicides for these different pathogens. In addition, chemical fungicides are the main strategy to manage horticultural product disease; however, a series of problems such as environmental pollution, fungicide residue, and pathogens developing resistance to fungicides are becoming more and more prominent. Induced resistance by various biotic inducers and abiotic stresses is considered a sustainable strategy to control the postharvest decay of horticultural products, which has gained increasing attention in recent years.

Therefore, we encourage manuscripts on the following topics:

  1. Isolation and identification of pathogenic fungi in pre-harvest or post-harvest horticultural products;
  2. New diagnosis and detection technology of pathogenic fungi in horticultural products;
  3. Prevention and control methods of pathogenic fungi in horticultural products;
  4. Detection and control technologies related to pathogenic mycotoxins of horticultural products;
  5. Pathogenic mechanism of pathogenic fungi on horticultural products.

Prof. Dr. Huali Xue
Guest Editor

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Keywords

  • plant disease
  • induced resistance
  • mycotoxin
  • disease control
  • pathogenic fungi
  • isolation and identification

Published Papers (4 papers)

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Research

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18 pages, 11389 KiB  
Article
Inhibitory Effect and Mechanism of Carvacrol against Black Mold Disease Agent Alternaria alternata in Goji Berries
by Junjie Wang, Yueli Zhou, Peng Wang, Lunaike Zhao, Huaiyu Zhang, Huan Qu and Fei Xu
J. Fungi 2024, 10(6), 402; https://doi.org/10.3390/jof10060402 - 3 Jun 2024
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Abstract
Alternaria alternata, as a main decay fungus of goji berry, can produce mycotoxins such as alternariol (AOH), alternariol monomethyl ether (AME), and tenuazonic acid (TeA). Carvacrol (CVR) has exhibited a broad-spectrum antifungal activity in vitro. We assumed that CVR can also be [...] Read more.
Alternaria alternata, as a main decay fungus of goji berry, can produce mycotoxins such as alternariol (AOH), alternariol monomethyl ether (AME), and tenuazonic acid (TeA). Carvacrol (CVR) has exhibited a broad-spectrum antifungal activity in vitro. We assumed that CVR can also be applied to control Alternaria rot on goji berries and mycotoxins produced by the pathogens. To investigate whether CVR impacts the accumulation of mycotoxins and cell membrane damage of A. alternata, the antifungal activity of CVR on the fungal growth and mycotoxin production was evaluated in this study. The results showed that the minimum inhibitory concentration (MIC) of CVR against A. alternata was 0.12 µL/mL. Meanwhile, the destruction of plasma membrane integrity, cytoplasmic leakage, intracellular oxidative damage, and inhibitory effect in vivo were also observed in A. alternata treated with CVR. Moreover, CVR significantly reduced the accumulation of AOH, AME, and TeA. Transcriptomic profiling was performed by means of comparative RNA-Seq analysis to research the gene expression level of A. alternata, which attested to significant changes in nitrogen metabolism, carbon utilization, fatty acid oxidation, and antioxidant enzymes in CVR-treated A. alternata. This study suggests a new understanding of the molecular mechanism of response to CVR treatment in A. alternata, indicating that CVR is a novel antifungal agent with the potential to be applied to various fungi. Full article
(This article belongs to the Special Issue Control of Postharvest Fungal Diseases)
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16 pages, 8893 KiB  
Article
SntB Affects Growth to Regulate Infecting Potential in Penicillium italicum
by Chunyan Li, Shuzhen Yang, Meihong Zhang, Yanting Yang, Zhengzheng Li and Litao Peng
J. Fungi 2024, 10(6), 368; https://doi.org/10.3390/jof10060368 - 21 May 2024
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Abstract
Penicillium italicum, a major postharvest pathogen, causes blue mold rot in citrus fruits through the deployment of various virulence factors. Recent studies highlight the role of the epigenetic reader, SntB, in modulating the pathogenicity of phytopathogenic fungi. Our research revealed that [...] Read more.
Penicillium italicum, a major postharvest pathogen, causes blue mold rot in citrus fruits through the deployment of various virulence factors. Recent studies highlight the role of the epigenetic reader, SntB, in modulating the pathogenicity of phytopathogenic fungi. Our research revealed that the deletion of the SntB gene in P. italicum led to significant phenotypic alterations, including delayed mycelial growth, reduced spore production, and decreased utilization of sucrose. Additionally, the mutant strain exhibited increased sensitivity to pH fluctuations and elevated iron and calcium ion stress, culminating in reduced virulence on Gannan Novel oranges. Ultrastructural analyses disclosed notable disruptions in cell membrane integrity, disorganization within the cellular matrix, and signs of autophagy. Transcriptomic data further indicated a pronounced upregulation of hydrolytic enzymes, oxidoreductases, and transport proteins, suggesting a heightened energy demand. The observed phenomena were consistent with a carbon starvation response potentially triggering apoptotic pathways, including iron-dependent cell death. These findings collectively underscored the pivotal role of SntB in maintaining the pathogenic traits of P. italicum, proposing that targeting PiSntB could offer a new avenue for controlling citrus fungal infections and subsequent fruit decay. Full article
(This article belongs to the Special Issue Control of Postharvest Fungal Diseases)
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13 pages, 6101 KiB  
Article
Isolation and Identification of Pathogens Causing Blue Mold of Lanzhou Lily during Postharvest Storage and Control of Disease and Mycotoxin Accumulation by Ozone Treatment
by Hui Zhang, Jihui Xi, Zhiguang Liu, Minxuan Chen, Zhenhang Lu, Huali Xue and Yang Bi
J. Fungi 2023, 9(11), 1091; https://doi.org/10.3390/jof9111091 - 8 Nov 2023
Cited by 1 | Viewed by 1260
Abstract
Blue mold (penicilliosis) is a common disease of Lanzhou lily (Lilium davidii var. willmottiae) during postharvest storage, which not only seriously affects the appearance and reduces the quality of lily bulbs, but also leads to the accumulation of mycotoxins [...] Read more.
Blue mold (penicilliosis) is a common disease of Lanzhou lily (Lilium davidii var. willmottiae) during postharvest storage, which not only seriously affects the appearance and reduces the quality of lily bulbs, but also leads to the accumulation of mycotoxins in rotten lily tissues, seriously endangering human health. Therefore, it is of great significance to clarify the main isolates causing postharvest blue mold of fresh Lanzhou lily and put forward effective measures to control the disease caused by these pathogens. In this study, pathogens were isolated and purified from the naturally diseased blue-mold tissue of Lanzhou lily, and then morphological and molecular biology techniques were applied to identify the isolates, verify the pathogenicity, determine the disease index and disease incidence, and finally, to analyze the control effect of ozone treatment on the blue mold of lily scale and mycotoxin accumulation. The results indicated that the main isolates causing postharvest blue mold of lily were Talaromyces adpressus, Penicillium gladioli, T. calidominioluteus, and P. polonicum. The pathogenicity test showed that P. gladioli and P. polonicum had a higher disease index than T. calidominioluteus and T. adpressus. Ozone treatment significantly reduced the incidence of disease caused by P. gladioli and P. polonicum, and effectively controlled the accumulation of patulin. This study characterized the main pathogens causing blue mold of postharvest Lanzhou lily during storage, and confirmed ozone application has a significant inhibitory effect on blue mold development and patulin accumulation in Lanzhou lily, which could be helpful in commercially controlling blue mold of postharvest Lanzhou lily during storage. Full article
(This article belongs to the Special Issue Control of Postharvest Fungal Diseases)
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Review

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18 pages, 1805 KiB  
Review
Endophytic Fungi Volatile Organic Compounds as Crucial Biocontrol Agents Used for Controlling Fruit and Vegetable Postharvest Diseases
by Lijun Ling, Lijun Feng, Yao Li, Rui Yue, Yuanyuan Wang and Yongpeng Zhou
J. Fungi 2024, 10(5), 332; https://doi.org/10.3390/jof10050332 - 4 May 2024
Viewed by 1015
Abstract
Fruits and vegetables are an important part of the human diet, but during transportation and storage, microbial pathogens attack and spoil fruits and vegetables, causing huge economic losses to agriculture. Traditionally used chemical fungicides leave chemical residues, leading to environmental pollution and health [...] Read more.
Fruits and vegetables are an important part of the human diet, but during transportation and storage, microbial pathogens attack and spoil fruits and vegetables, causing huge economic losses to agriculture. Traditionally used chemical fungicides leave chemical residues, leading to environmental pollution and health risks. With the emphasis on food safety, biocontrol agents are attracting more and more attention due to their environmental friendliness. Endophytic fungi are present in plant tissues and do not cause host disease. The volatile organic compounds (VOCs) they produce are used to control postharvest diseases due to their significant antifungal activity, as well as their volatility, safety and environmental protection characteristics. This review provides the concept and characterization of endophytic fungal VOCs, concludes the types of endophytic fungi that release antifungal VOCs and their biological control mechanisms, as well as focuses on the practical applications and the challenges of applying VOCs as fumigants. Endophytic fungal VOCs can be used as emerging biocontrol resources to control postharvest diseases that affect fruits and vegetables. Full article
(This article belongs to the Special Issue Control of Postharvest Fungal Diseases)
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