molecules-logo

Journal Browser

Journal Browser

Natural Products as Plant Protection Agents

A special issue of Molecules (ISSN 1420-3049). This special issue belongs to the section "Natural Products Chemistry".

Deadline for manuscript submissions: 31 July 2026 | Viewed by 691

Special Issue Editors


E-Mail Website
Guest Editor
Department of Microbiology and Biomonitoring, University of Agriculture, al. A. Mickiewicza 21, 31-120 Krakow, Poland
Interests: entomology; biological plant protection; legumes; soil contamination; bioremediation
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Organic pesticides, derived from plant extracts, essential oils, and other natural substances, represent a promising alternative to their synthetic counterparts in controlling pests, diseases, and weeds. The growing interest in these solutions stems from their numerous advantages over synthetic pesticides. They are biodegradable, breaking down quickly in the environment and minimizing soil and water contamination. Their complex and often multiple modes of action can make it more difficult for weeds or pests to evolve resistance, offering a long-term strategy for protection management and making them a perfect fit for integrated plant protection and organic farming systems, where the focus is on ecological balance rather than total eradication.

Despite their potential, organic pesticides face several limitations that hinder their widespread adoption. A major challenge is the variable bioactive content in extracts, which can fluctuate based on the plant's growth conditions and harvest time. This leads to an inconsistent efficacy in the field. They also often have a narrow control spectrum, meaning that they may only be effective against a few species, and their activity can be inconsistent due to their low persistence in the environment. Furthermore, formulation and delivery hurdles—such as their volatility and insolubility in water—make it difficult to achieve consistent and selective weed or pest control without harming the crop.

The study of advanced delivery systems, such as emulsions, nanoemulsions, microencapsulation, or mixtures with organic carriers, is welcomed so as to bridge the gap between promising laboratory results and reliable field performance and to make organic pesticides a more viable tool for sustainable agriculture. Studies on the use of natural products in plant protection under field conditions are also appreciated.

Prof. Dr. Janina Gospodarek
Dr. Agnieszka Synowiec
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 250 words) can be sent to the Editorial Office for assessment.

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. Molecules 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

  • advanced delivery systems
  • formulation
  • efficacy
  • control spectrum
  • persistence in the environment
  • field performance
  • sustainable agriculture
  • integrated pest management

Benefits of Publishing in a Special Issue

  • Ease of navigation: Grouping papers by topic helps scholars navigate broad scope journals more efficiently.
  • Greater discoverability: Special Issues support the reach and impact of scientific research. Articles in Special Issues are more discoverable and cited more frequently.
  • Expansion of research network: Special Issues facilitate connections among authors, fostering scientific collaborations.
  • External promotion: Articles in Special Issues are often promoted through the journal's social media, increasing their visibility.
  • Reprint: MDPI Books provides the opportunity to republish successful Special Issues in book format, both online and in print.

Further information on MDPI's Special Issue policies can be found here.

Published Papers (1 paper)

Order results
Result details
Select all
Export citation of selected articles as:

Research

30 pages, 4115 KB  
Article
Green Synthesis of Bergamot Solid Waste-Based Silver Nanoparticles: Optimization Process for Agriculture Use
by Roberta Caridi, Maria Rosa Abenavoli, Licia Elvira Prestagiacomo, Marco Gaspari, Antonio Mauceri, Meriem Miyassa Aci, Isidoro Giorgio Lesci and Agostino Sorgonà
Molecules 2026, 31(5), 797; https://doi.org/10.3390/molecules31050797 - 27 Feb 2026
Viewed by 496
Abstract
Green-synthesized metal nanoparticles are increasingly investigated for their antioxidative, antimicrobial, and stress-protective properties as eco-friendly and cost-effective alternatives to conventional chemical synthesis. Although agri-food wastes represent biomolecule-rich and sustainable resources, they remain less explored as biological matrices for green metal nanoparticle synthesis compared [...] Read more.
Green-synthesized metal nanoparticles are increasingly investigated for their antioxidative, antimicrobial, and stress-protective properties as eco-friendly and cost-effective alternatives to conventional chemical synthesis. Although agri-food wastes represent biomolecule-rich and sustainable resources, they remain less explored as biological matrices for green metal nanoparticle synthesis compared with plant and microbial extracts. The aim of this study was to optimize the synthesis and evaluate the bioactivity of silver nanoparticles derived from bergamot pomace, a polyphenol-rich agri-food waste. Synthesis parameters, including extract concentration, pH, extract-to-metal ratio, temperature, and reaction time, were optimized, and the nanoparticles were characterized by UV–Vis spectroscopy, dynamic light scattering, zeta potential analysis, and electron microscopy (TEM, STEM). ATR-FTIR and proteomic analyses were employed to investigate the molecular mechanisms involved in nanoparticle reduction, capping, and stabilization. The bergamot pomace-based silver nanoparticles exhibited a surface plasmon resonance peak at 430 nm, spherical morphology, good colloidal stability, and average diameters of 15–20 nm, without irreversible aggregation. A putative synthesis mechanism was proposed, involving Ag+ bioreduction mediated by polyphenols, ascorbic acid, and oxidoreductase-associated proteins, followed by stabilization through protein corona formation. Seed nanopriming assays on tomato and lettuce, together with in vitro antimicrobial tests against Pseudomonas syringae pv. tomato and Xanthomonas campestris pv. vesicatoria, demonstrated phytostimulatory and antimicrobial effects at very low nanoparticle concentrations. Overall, this study highlights bergamot pomace as a valuable resource for green silver nanoparticle synthesis, supporting its applicability in sustainable agriculture. Full article
(This article belongs to the Special Issue Natural Products as Plant Protection Agents)
Show Figures

Graphical abstract

Back to TopTop