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New Strategies for the Control of Plant-Parasitic Nematodes
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New Strategies for the Control of Plant-Parasitic Nematodes

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 1620

Special Issue Editor

Dr. Ioannis Giannakou

E-Mail Website
Guest Editor
Department of Science of Crop Production, Laboratory of Agricultural Zoology and Entomology, Agricultural University of Athens, 11855 Athens, Greece
Interests: nematology; plant extracts; crop protection; chemical control; biological control
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Plant-parasitic nematodes pose a significant threat to global agriculture, causing substantial yield losses and economic damage. It is imperative to develop effective and sustainable methods to combat these pests while reducing the reliance on chemical nematicides.

This Special Issue aims to shed light on cutting-edge research and novel approaches in the control of plant-parasitic nematodes. We encourage submissions exploring not only conventional strategies but also groundbreaking techniques that efficiently combat nematode-related challenges while minimizing ecological risks. Emphasis will be placed on advances in integrated pest management (IPM), biological control, host resistance, chemical alternatives, and sustainable agronomic practices. Contributions may cover a broad range of topics including, but not limited to, the following:

  1. Emerging trends and technologies in nematode management;
  2. Efficacy and limitations of chemical control methods;
  3. Utilization of natural enemies for biological control;
  4. Genetic approaches for engineering nematode-resistant crops;
  5. Sustainable farming practices that mitigate nematode damage;
  6. Underground interaction mechanisms between plants and nematodes;
  7. Innovative nematode diagnostic techniques.

We invite you to contribute a review or research article to this Special Issue and help shape the future of nematode management.

Dr. Ioannis Giannakou
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. 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

  • plant-parasitic nematodes
  • nematode management
  • chemical control
  • biological control
  • nematode-resistant
  • crop protection

Published Papers (3 papers)

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Research

Jump to: Review

17 pages, 3977 KiB  
Article
Hydroalcoholic Extracts from Pleurotus ostreatus Spent Substrate with Nematocidal Activity against Nacobbus aberrans Phytonematode and the Non-Target Species Panagrellus redivivus
by Julio Cruz-Arévalo, Víctor M. Hernández-Velázquez, Alexandre Toshirrico Cardoso-Taketa, Manases González-Cortazar, José E. Sánchez-Vázquez, Guadalupe Peña-Chora, Edgar Villar-Luna and Liliana Aguilar-Marcelino
Plants 2024, 13(13), 1777; https://doi.org/10.3390/plants13131777 - 27 Jun 2024
Viewed by 295
Abstract
Pleurotus ostreatus, an edible mushroom widely consumed worldwide, generates a by-product known as spent mushroom substrate (SMS). This material has demonstrated biological activity against agricultural crop pathogens. In this study, we evaluated the nematocidal effectiveness of hydroalcoholic extracts (T5, T2, AT5, and [...] Read more.
Pleurotus ostreatus, an edible mushroom widely consumed worldwide, generates a by-product known as spent mushroom substrate (SMS). This material has demonstrated biological activity against agricultural crop pathogens. In this study, we evaluated the nematocidal effectiveness of hydroalcoholic extracts (T5, T2, AT5, and AT2) derived from SMS of P. ostreatus against (J2) of the phytonematode Nacobbus aberrans and assessed their potential toxicity towards the non-target nematode Panagrellus redivivus. Among these extracts, AT5 exhibited the highest efficacy against N. aberrans and was the least toxic against P. redivivus. Liquid–liquid partitioning yielded the AQU fraction, which showed significant nematocidal activity against J2 (75.69% ± 8.99 mortality), comparable to chitosan. The GC-MS analysis revealed the presence of several compounds, including palmitic acid, linoleic acid, and 2,4-Di-tert-butylphenol. These findings are consistent with studies confirming the antagonistic effectiveness of these compounds against phytonematodes. Additionally, all extracts exhibited toxicity against P. redivivus, with T2 being the most toxic. Our findings demonstrate that while the AT5 extract displays antagonistic effectiveness against both N. aberrans and P. redivivus, it was the least toxic among the extracts tested. Thus, SMS of P. ostreatus holds potential as a source of nematocidal compounds, which could offer significant benefits for agricultural pest control. Full article
(This article belongs to the Special Issue New Strategies for the Control of Plant-Parasitic Nematodes)
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21 pages, 7709 KiB  
Article
Harnessing Walnut-Based Zinc Oxide Nanoparticles: A Sustainable Approach to Combat the Disease Complex of Meloidogyne arenaria and Macrophomina phaseolina in Cowpea
by Mir Akhtar Hussain, Ghazala Parveen, Aashaq Hussain Bhat, Zubair Altaf Reshi, Farid S. Ataya and Zaffar A. Handoo
Plants 2024, 13(13), 1743; https://doi.org/10.3390/plants13131743 - 24 Jun 2024
Viewed by 416
Abstract
Zinc oxide nanoparticles (ZnO NPs) exhibit diverse applications, including antimicrobial, UV-blocking, and catalytic properties, due to their unique structure and properties. This study focused on the characterization of zinc oxide nanoparticles (ZnO NPs) synthesized from Juglans regia leaves and their application in mitigating [...] Read more.
Zinc oxide nanoparticles (ZnO NPs) exhibit diverse applications, including antimicrobial, UV-blocking, and catalytic properties, due to their unique structure and properties. This study focused on the characterization of zinc oxide nanoparticles (ZnO NPs) synthesized from Juglans regia leaves and their application in mitigating the impact of simultaneous infection by Meloidogyne arenaria (root-knot nematode) and Macrophomina phaseolina (root-rot fungus) in cowpea plants. The characterization of ZnO NPs was carried out through various analytical techniques, including UV–visible spectrophotometry, Powder-XRD analysis, FT-IR spectroscopy, and SEM-EDX analysis. The study confirmed the successful synthesis of ZnO NPs with a hexagonal wurtzite structure and exceptional purity. Under in vitro conditions, ZnO NPs exhibited significant nematicidal and antifungal activities. The mortality of M. arenaria juveniles increased with rising ZnO NP concentrations, and a similar trend was observed in the inhibition of M. phaseolina mycelial growth. SEM studies revealed physical damage to nematodes and structural distortions in fungal hyphae due to ZnO NP treatment. In infected cowpea plants, ZnO NPs significantly improved plant growth parameters, including plant length, fresh mass, and dry mass, especially at higher concentrations. Leghemoglobin content and the number of root nodules also increased after ZnO NP treatment. Additionally, ZnO NPs reduced gall formation and egg mass production by M. arenaria nematodes and effectively inhibited the growth of M. phaseolina in the roots. Furthermore, histochemical analyses demonstrated a reduction in oxidative stress, as indicated by decreased levels of reactive oxygen species (ROS) and lipid peroxidation in ZnO NP-treated plants. These findings highlight the potential of green-synthesized ZnO NPs as an eco-friendly and effective solution to manage disease complex in cowpea caused by simultaneous nematode and fungal infections. Full article
(This article belongs to the Special Issue New Strategies for the Control of Plant-Parasitic Nematodes)
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Review

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21 pages, 363 KiB  
Review
Upgrading Strategies for Managing Nematode Pests on Profitable Crops
by Mahfouz M. M. Abd-Elgawad
Plants 2024, 13(11), 1558; https://doi.org/10.3390/plants13111558 - 4 Jun 2024
Viewed by 494
Abstract
Plant-parasitic nematodes (PPNs) reduce the high profitability of many crops and degrade their quantitative and qualitative yields globally. Traditional nematicides and other nematode control methods are being used against PPNs. However, stakeholders are searching for more sustainable and effective alternatives with limited side [...] Read more.
Plant-parasitic nematodes (PPNs) reduce the high profitability of many crops and degrade their quantitative and qualitative yields globally. Traditional nematicides and other nematode control methods are being used against PPNs. However, stakeholders are searching for more sustainable and effective alternatives with limited side effects on the environment and mankind to face increased food demand, unfavorable climate change, and using unhealthy nematicides. This review focuses on upgrading the pre-procedures of PPN control as well as novel measures for their effective and durable management strategies on economically important crops. Sound and effective sampling, extraction, identification, and counting methods of PPNs and their related microorganisms, in addition to perfecting designation of nematode–host susceptibility/resistance, form the bases for these strategies. Therefore, their related frontiers should be expanded to synthesize innovative integrated solutions for these strategies. The latter involve supplanting unsafe nematicides with a new generation of safe and reliable chemical nematicidal and bionematicidal alternatives. For better efficacy, nematicidal materials and techniques should be further developed via computer-aided nematicide design. Bioinformatics devices can reinforce the potential of safe and effective biocontrol agents (BCAs) and their active components. They can delineate the interactions of bionematicides with their targeted PPN species and tackle complex diseases. Also, the functional plan of nematicides based on a blueprint of the intended goals should be further explored. Such goals can currently engage succinate dehydrogenase, acetylcholinesterase, and chitin deacetylase. Nonetheless, other biochemical compounds as novel targets for nematicides should be earnestly sought. Commonly used nematicides should be further tested for synergistic or additive function and be optimized via novel sequential, dual-purpose, and co-application of agricultural inputs, especially in integrated pest management schemes. Future directions and research priorities should address this novelty. Meanwhile, emerging bioactivated nematicides that offer reliability and nematode selectivity should be advanced for their favorable large-scale synthesis. Recent technological means should intervene to prevail over nematicide-related limitations. Nanoencapsulation can challenge production costs, effectiveness, and manufacturing defects of some nematicides. Recent progress in studying molecular plant–nematode interaction mechanisms can be further exploited for novel PPN control given related topics such as interfering RNA techniques, RNA-Seq in BCA development, and targeted genome editing. A few recent materials/techniques for control of PPNs in durable agroecosystems via decision support tools and decision support systems are addressed. The capability and effectiveness of nematicide operation harmony should be optimized via employing proper cooperative mechanisms among all partners. Full article
(This article belongs to the Special Issue New Strategies for the Control of Plant-Parasitic Nematodes)
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