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Plants
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Biopesticides for Plant Protection
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Biopesticides for Plant Protection

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Protection and Biotic Interactions".

Deadline for manuscript submissions: 31 July 2024 | Viewed by 2161

Special Issue Editors

Dr. Jorge Miguel Silva Faria

E-Mail Website
Guest Editor
1. National Institute for Agriculture and Veterinary Research (INIAV), Plant Health, Nematology, 2780-159 Oeiras, Portugal
2. GREEN-IT Bioresources for Sustainability, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2780-157 Oeiras, Portugal
Interests: in vitro cultures; ionomics; metabolomics; nematode pest management; plant nutrition; plant physiology and biochemistry; sustainable agriculture
Special Issues, Collections and Topics in MDPI journals
Dr. Maria De Lurdes Inácio

E-Mail Website
Guest Editor
1. National Institute for Agriculture and Veterinary Research (INIAV), Plant Health, Nematology, 2780-159 Oeiras, Portugal
2. GREEN-IT Bioresources for Sustainability, Instituto de Tecnologia Química e Biológica, Universidade Nova de Lisboa (ITQB NOVA), Av. da República, 2780-157 Oeiras, Portugal
Interests: nematodes; diagnostics; plant protection; microbe–plant interactions; resistance management; key genes associated with insecticide resistance
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plants face various threats from pests and diseases that can significantly impact productivity and quality. Traditional chemical pesticides have been used extensively against pests and pathogens, but concerns about their adverse effects on the environment and human health have prompted the search for safer alternatives. Biopesticides have emerged as a viable option due to their low toxicity and minimal environmental persistence.  

Secondary plant metabolites, e.g., essential oils or their individual components, could be a natural source for the design of biopesticides. Examples of commonly used essential oils in pest management include neem oil, peppermint oil, and clove oil. Natural compounds can act as repellents, antifeedants, growth inhibitors, or disruptors of pest and pathogens physiology, offering an alternative to synthetic chemical pesticides. Furthermore, the use of biopesticides based on natural products offers several advantages over traditional pesticides, e.g., they generally break down more rapidly in the environment, reducing the risk of long-term accumulation and pollution.  

Biopesticides derived from phytochemicals provide a promising alternative to chemical pesticides in managing plant pests. However, the effectiveness of phytochemicals may vary depending on the target pest species, concentration, and application method. Thus, further research and development are still needed to optimize their formulations, application methods, and overall efficacy in order to ensure their widespread and sustainable use. 

This Special Issue aims to extend the current knowledge on biopesticides for plant protection through studies exploring the biological activity of phytochemicals for pest and disease control.  

Dr. Jorge Miguel Silva Faria
Dr. Maria De Lurdes Inácio
Guest Editors

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. Plants is an international peer-reviewed open access semimonthly 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 2700 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

  • biological activity
  • biopesticides
  • pest management
  • plant protection
  • essential oils
  • green chemistry
  • mode of action
  • phytochemicals
  • sustainability

Published Papers (2 papers)

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Research

13 pages, 2392 KiB  
Article
Potential of Chitosan for the Control of Powdery Mildew (Leveillula taurica (Lév.) Arnaud) in a Jalapeño Pepper (Capsicum annuum L.) Cultivar
by Omar Jiménez-Pérez, Gabriel Gallegos-Morales, Cesar Alejandro Espinoza-Ahumada, Carolina Delgado-Luna, Pablo Preciado-Rangel and Bernardo Espinosa-Palomeque
Plants 2024, 13(7), 915; https://doi.org/10.3390/plants13070915 - 22 Mar 2024
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Abstract
One of the phytopathogens that cause severe damage to jalapeño pepper is Leveillula taurica (Lév.) Arnaud, the causative agent of powdery mildew. Synthetic fungicides are currently employed for its control, contributing to adverse effects on human health and the environment. The main objective [...] Read more.
One of the phytopathogens that cause severe damage to jalapeño pepper is Leveillula taurica (Lév.) Arnaud, the causative agent of powdery mildew. Synthetic fungicides are currently employed for its control, contributing to adverse effects on human health and the environment. The main objective of this research was to identify the causal agent of powdery mildew and assess the efficacy of chitosan in powdery mildew control on jalapeño pepper. The following treatments were evaluated in laboratory and greenhouse conditions: T1 = 0.0125% chitosan, T2 = 0.0025% chitosan, T3 = 0.05% chitosan, T4 = 0.1% chitosan, T5 = 0.2% chitosan, T6 = tebuconazole 25% (1.8 mL/L water), and T7 = control (water). Symptomatology results indicated that L. taurica is indeed the causative agent of powdery mildew. Treatments T4 and T5 exhibited the lowest percentages of incidences and severity, hence achieving higher control efficacy in the laboratory (57.70 ± 3.85 and 65.39 ± 3.85) and greenhouse (56.67 ± 4.08 and 70 ± 8.16%) compared to T6 (control efficacy, 38.46 ± 0.00% in the laboratory and 50 ± 0.00% in the greenhouse). The chitosan derived from shrimp had a significant impact on the cell walls of L. taurica spores and mycelium. Consequently, chitosan emerges as a viable organic alternative to fungicides for controlling powdery mildew in jalapeño pepper. Full article
(This article belongs to the Special Issue Biopesticides for Plant Protection)
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15 pages, 1112 KiB  
Article
Nematicidal Activity of Phytochemicals against the Root-Lesion Nematode Pratylenchus penetrans
by Pedro Barbosa, Jorge M. S. Faria, Tomás Cavaco, Ana Cristina Figueiredo, Manuel Mota and Cláudia S. L. Vicente
Plants 2024, 13(5), 726; https://doi.org/10.3390/plants13050726 - 04 Mar 2024
Viewed by 1051
Abstract
Plant-parasitic nematodes (PPNs) are highly damaging pests responsible for heavy losses in worldwide productivity in a significant number of important plant crops. Common pest management strategies rely on the use of synthetic chemical nematicides, which have led to serious concerns regarding their impacts [...] Read more.
Plant-parasitic nematodes (PPNs) are highly damaging pests responsible for heavy losses in worldwide productivity in a significant number of important plant crops. Common pest management strategies rely on the use of synthetic chemical nematicides, which have led to serious concerns regarding their impacts on human health and the environment. Plant natural products, or phytochemicals, can provide a good source of agents for sustainable control of PPNs, due to their intrinsic characteristics such as higher biodegradability, generally low toxicity for mammals, and lower bioaccumulation in the environment. In this work, the nematicidal activity of 39 phytochemicals was determined against the root-lesion nematode (RLN) Pratylenchus penetrans using standard direct and indirect contact methodologies. Overall, the RLN was tolerant to the tested phytochemicals at the highest concentration, 2 mg/mL, seldom reaching full mortality. However, high activities were obtained for benzaldehyde, carvacrol, 3-octanol, and thymol, in comparison to other phytochemicals or the synthetic nematicide oxamyl. These phytochemicals were seen to damage nematode internal tissues but not its cuticle shape. Also, the environmental and (eco)toxicological parameters reported for these compounds suggest lower toxicity and higher safety of use than oxamyl. These compounds appear to be good candidates for the development of biopesticides for a more sustainable pest management strategy. Full article
(This article belongs to the Special Issue Biopesticides for Plant Protection)
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