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Antibiotics
Special Issues
Plant's Defense against Pathogens
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Plant's Defense against Pathogens

A special issue of Antibiotics (ISSN 2079-6382). This special issue belongs to the section "Plant-Derived Antibiotics".

Deadline for manuscript submissions: closed (31 December 2020) | Viewed by 7098

Special Issue Editor

Dr. Scala Valeria

E-Mail Website
Guest Editor
Research Centre for Plant Protection and Certification, Council for Agricultural Research and Economics (CREA), 00156 Roma, Italy
Interests: plant pathology; bacterial pathogen; mycotoxins; fungal pathogen; lipids; signal trasduction
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plants make up the majority of the earth’s living environment. Directly or indirectly, plants make up all the food on which we depend. Pathogenic microorganisms (viruses, bacteria, fungi, protozoa, and nematodes) and insect attacks cause disease in plants. Many studies have increased our knowledge about the mechanism by which these factors induce disease in plants and plants defenses. Therefore, the main subject of this Special Issue includes any study to improve our knowledge of plant defense against pathogens in any environment, whether agricultural, natural, etc. In addition, manuscripts concerning other plant defense areas of interest, including the following, are welcome:

1. Plant–pathogen interactions and evolution;
2. Fungal host resistance, virulence, and transmission–host interactions and evolution;
3. Plant disease control;
4. Bacterial host resistance, virulence, and transmission–host interactions and evolution;
5. Virus host resistance, virulence, and transmission–host interaction and evolution;
6. Specific pathogen detection methods;
7. Plant defense against pathogens.

Dr. Scala Valeria
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. Antibiotics 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 2900 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

  • plant defense
  • pathogenic microorganism
  • plant disease control
  • plant-pathogen interaction
  • plant defense signals

Published Papers (2 papers)

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Research

18 pages, 1742 KiB  
Article
The Potential of Plant-Based Bioactive Compounds on Inhibition of Aflatoxin B1 Biosynthesis and Down-regulation of aflR, aflM and aflP Genes
by Nassim Safari, Mehran Mirabzadeh Ardakani, Roghayeh Hemmati, Alessia Parroni, Marzia Beccaccioli and Massimo Reverberi
Antibiotics 2020, 9(11), 728; https://doi.org/10.3390/antibiotics9110728 - 23 Oct 2020
Cited by 22 | Viewed by 2435
Abstract
The use of plant extracts in pre- and post-harvest disease management of agricultural crops to cope with aflatoxin B1 contamination has shown great promise due to their capability in managing toxins and safe-keeping the quality. We investigated the anti-aflatoxigenic effect of multiple doses [...] Read more.
The use of plant extracts in pre- and post-harvest disease management of agricultural crops to cope with aflatoxin B1 contamination has shown great promise due to their capability in managing toxins and safe-keeping the quality. We investigated the anti-aflatoxigenic effect of multiple doses of eight plant extracts (Heracleum persicum, Peganum harmala, Crocus sativus, Trachyspermum ammi, Rosmarinus officinalis, Anethum graveolens, Berberis vulgaris, Berberis thunbergii) on Aspergillus flavus via LC-MS and the down-regulatory effect of them on aflR, aflM and aflP genes involved in the aflatoxin B1 biosynthesis pathway using RT-qPCR analyses. Our results showed that H. persicum (4 mg/mL), P. harmala (6 mg/mL) and T. ammi (2 mg/mL) completely stopped the production of aflatoxin B1, without inducing significant changes in A. flavus growth. Furthermore, our findings showed a highly significant correlation between the gene expression and the aflatoxin B1 biosynthesis, such that certain doses of the extracts reduced or blocked the expression of the aflR, aflM and aflP and consequently reduced the synthesis of aflatoxin B1. Interestingly, compared to the regulatory gene (aflR), the down-regulation of expression in the structural genes (aflM and aflP) was more consistent and correlated with the inhibition of aflatoxin B1 production. Overall, this study reveals the anti-aflatoxigenic mechanisms of the selected plant extracts at the gene expression level and provides evidence for their use in plant and crop protection. Full article
(This article belongs to the Special Issue Plant's Defense against Pathogens)
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16 pages, 1644 KiB  
Article
Antibacterial Activity of Essential Oils and Trametes versicolor Extract against Clavibacter michiganensis subsp. michiganensis and Ralstonia solanacearum for Seed Treatment and Development of a Rapid In Vivo Assay
by Laura Orzali, Maria Teresa Valente, Valeria Scala, Stefania Loreti and Nicoletta Pucci
Antibiotics 2020, 9(9), 628; https://doi.org/10.3390/antibiotics9090628 - 21 Sep 2020
Cited by 20 | Viewed by 4231
Abstract
Clavibacter michiganensis subsp. michiganensis (Smith) Davis et al. (Cmm) and Ralstonia solanacearum Yabuuchi et al. (Smith) (Rs) are important seed-borne bacterial pathogens of tomato (Solanum lycopersicum) listed as A2 pests in the EPPO (European and Mediterranean Plant Protection Organization) region. At [...] Read more.
Clavibacter michiganensis subsp. michiganensis (Smith) Davis et al. (Cmm) and Ralstonia solanacearum Yabuuchi et al. (Smith) (Rs) are important seed-borne bacterial pathogens of tomato (Solanum lycopersicum) listed as A2 pests in the EPPO (European and Mediterranean Plant Protection Organization) region. At present, there are few strategies to control these pathogens, and seed control with eco-compatible approaches is widely encouraged. In this work, the essential oils (EOs) of oregano (Origanum vulgare), garlic (Allium sativum), basil (Ocimum basilicum), cinnamon (Cinnamomum zeylanicum), clove buds (Syzygium aromaticum), thyme (Thymus vulgaris), and Trametes versicolor extract (Tve) were tested in vitro for their antimicrobial activity against Cmm and Rs (broth microdilution method). The tested EOs and the Tve extract caused a significant inhibition of bacterial growth, with very promising MBC (minimum bactericidal concentration) and MIC90 (minimum inhibitory concentration causing a 90% growth inhibition) values. Moreover, an in vivo germination test showed no major reduction in seed germination when the substances were applied as seed treatment. A rapid molecular screening method has been developed, through real-time PCR, for the specific quantification of Cmm in the presence of a vegetable matrix to test in vivo the antimicrobial efficacy of oregano and cinnamon oil on seed treatment without resorting to whole plant essays, which are time- and space-consuming. Full article
(This article belongs to the Special Issue Plant's Defense against Pathogens)
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