scholarly journals Neuromuscular function in plant parasitic nematodes: a target for novel control strategies?

Parasitology ◽  
2006 ◽  
Vol 131 (S1) ◽  
pp. S129 ◽  
Author(s):  
M. J. KIMBER ◽  
C. C. FLEMING
Keyword(s):  
Control Strategies ◽  
Neuromuscular Function ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Plant Parasitic

scholarly journals Marine Organisms for the Sustainable Management of Plant Parasitic Nematodes

Plants ◽  
2021 ◽  
Vol 10 (2) ◽  
pp. 369
Author(s):  
Pasqua Veronico ◽  
Maria Teresa Melillo
Keyword(s):  
Crop Production ◽  
Control Strategies ◽  
Marine Organisms ◽  
New Drugs ◽  
Effective Control ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Wide Range ◽  
Plant Growth Stimulants ◽  
Plant Parasitic

Plant parasitic nematodes are annually responsible for the loss of 10%–25% of worldwide crop production, most of which is attributable to root-knot nematodes (RKNs) that infest a wide range of agricultural crops throughout the world. Current nematode control tools are not enough to ensure the effective management of these parasites, mainly due to the severe restrictions imposed on the use of chemical pesticides. Therefore, it is important to discover new potential nematicidal sources that are suitable for the development of additional safe and effective control strategies. In the last few decades, there has been an explosion of information about the use of seaweeds as plant growth stimulants and potential nematicides. Novel bioactive compounds have been isolated from marine cyanobacteria and sponges in an effort to find their application outside marine ecosystems and in the discovery of new drugs. Their potential as antihelmintics could also be exploited to find applicability against plant parasitic nematodes. The present review focuses on the activity of marine organisms on RKNs and their potential application as safe nematicidal agents.

scholarly journals ROOT-KNOT AND LESION NEMATODES IN COFFEE SEEDLINGS PRODUCED IN THE STATE OF MINAS GERAIS, BRAZIL

2018 ◽  
Vol 13 (2) ◽  
pp. 178 ◽  
Author(s):  
Willian César Terra ◽  
Júlio Carlos Pereira da Silva ◽  
Vicente Paulo Campos ◽  
Sônia Maria De Lima Salgado
Keyword(s):  
Coffea Arabica ◽  
Control Strategies ◽  
Minas Gerais ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Rotylenchulus Reniformis ◽  
Lesion Nematodes ◽  
Minas Gerais State ◽  
Root Lesion Nematodes ◽  
Plant Parasitic

<p>Understanding the mechanisms of plant-parasitic nematodes (PPN) dispersion is vital to improve control strategies aiming to restrict dissemination of these plant parasites. In the present work, we evaluated the presence of PPN in Arabic coffee (<em>Coffea arabica</em>) seedlings produced in commercial nurseries in Minas Gerais, state, Brazil. A total of 2830 samples obtained from 318 coffee nurseries, in 84 counties within the South and Zona da Mata regions in Minas Gerais, Brazil and representing more than 62 million coffee seedlings, were analyzed. <em>Meloidogyne</em> spp. was identified in 11 samples from four counties. <em>Pratylenchus spp</em>. and <em>Rotylenchulus reniformis</em> were detected in 281 and 47 samples, respectively. According to the Regulatory Instruction N° 35 from the Ministry of Agriculture, Livestock and Food Supply (MAPA), in Brazil, coffee seedlings infected by <em>Meloidogyne</em> spp. are prohibited for commercialization and/or planting. However, such restrictions do not apply to other PPN. Therefore, seedlings sold in Minas Gerais may constitute sources of dissemination for root-lesion nematodes (<em>Pratylenchus</em> spp.) and the reniform nematode (<em>R. reniformis</em>).</p>

scholarly journals Biocontrol of Plant Parasitic Nematodes by Fungi: Efficacy and Control Strategies

2015 ◽  
pp. 219-247 ◽  
Author(s):  
Mohd. Sayeed Akhtar ◽  
Jitendra Panwar ◽  
Siti Nor Akmar Abdullah ◽  
Yasmeen Siddiqui ◽  
Mallappa Kumara Swamy ◽  
...  
Keyword(s):  
Control Strategies ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
And Control ◽  
Plant Parasitic

scholarly journals Translational biology of nematode effectors. Or, to put it another way, functional analysis of effectors – what’s the point?

Nematology ◽  
2017 ◽  
Vol 19 (3) ◽  
pp. 251-261 ◽  
Author(s):  
Sophie Mantelin ◽  
Peter Thorpe ◽  
John T. Jones
Keyword(s):  
Functional Analysis ◽  
Control Strategies ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Huge Amount ◽  
Short Article ◽  
Plant Parasitic

There has been a huge amount of work put into identifying and characterising effectors from plant-parasitic nematodes in recent years. Although this work has provided insights into the mechanisms by which nematodes can infect plants, the potential translational outputs of much of this research are not always clear. This short article will summarise how developments in effector biology have allowed, or will allow, new control strategies to be developed, drawing on examples from nematology and from other pathosystems.

Differential chemotactic responses of two plant-parasitic nematodes, Meloidogyne incognita and Rotylenchulus reniformis, to some inorganic ions

Nematology ◽  
2002 ◽  
Vol 4 (1) ◽  
pp. 99-105 ◽  
Author(s):  
Patrick Quénéhervé ◽  
Ronan Le Saux
Keyword(s):  
Meloidogyne Incognita ◽  
Control Strategies ◽  
Inorganic Ions ◽  
Nematode Species ◽  
Ammonium Salts ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
Rotylenchulus Reniformis ◽  
Chloride Salts ◽  
Plant Parasitic

AbstractThe orientation of juveniles of Meloidogyne incognita and Rotylenchulus reniformis was studied in salt gradients created in a linear agarose gel. Twelve combinations of calcium, potassium, sodium or ammonium cations and chloride, nitrate or sulphate anions were tested. The orientation of juveniles of M. incognita was induced by the constitutive cation of the salt, e.g., calcium salts had no effect while the other salts and especially ammonium salts and ammonium nitrate were strongly repellent. In contrast, the orientation of juveniles of R. reniformis was induced by the constitutive anion of the salt, e.g., chloride salts were found to be repellent while sulphate and nitrate salts were attractive. These results are discussed as possible novel control strategies for economically important plant parasitic nematodes. In other respects, these differences in chemical preferences may partly explain the observed geographical distribution of these nematode species according to the ionic content of the soils.

scholarly journals Review on Control Methods against Plant Parasitic Nematodes Applied in Southern Member States (C Zone) of the European Union

Agriculture ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 602
Author(s):  
Nicola Sasanelli ◽  
Alena Konrat ◽  
Varvara Migunova ◽  
Ion Toderas ◽  
Elena Iurcu-Straistaru ◽  
...  
Keyword(s):  
European Union ◽  
Cover Crops ◽  
Control Strategies ◽  
Physical Method ◽  
Parasitic Nematodes ◽  
The European Union ◽  
Nematode Control ◽  
Plant Parasitic Nematodes ◽  
Control Management ◽  
Plant Parasitic

The European legislative on the use of different control strategies against plant-parasitic nematodes, with particular reference to pesticides, is constantly evolving, sometimes causing confusion in the sector operators. This article highlights the nematode control management allowed in the C Zone of the European Union, which includes the use of chemical nematicides (both fumigant and non-fumigant), agronomic control strategies (crop rotations, biofumigation, cover crops, soil amendments), the physical method of soil solarization, the application of biopesticides (fungi, bacteria and their derivatives) and plant-derived formulations. The authors analyze the use of these strategies and substances in organic agriculture as well as in Integrated Pest Management (IPM) programs.

Getting to the root of neuronal signalling in plant-parasitic nematodes using RNA interference

Nematology ◽  
2007 ◽  
Vol 9 (3) ◽  
pp. 301-315 ◽  
Author(s):  
Steven McMaster ◽  
Susan McKinney ◽  
Aaron Maule ◽  
Michael Kimber ◽  
Colin Fleming ◽  
...  
Keyword(s):  
Rna Interference ◽  
Control Strategies ◽  
Large Family ◽  
Parasitic Nematodes ◽  
Plant Parasitic Nematodes ◽  
In Planta ◽  
Nematode Parasites ◽  
Neuronal Signalling ◽  
Plant Parasitic

AbstractA variety of genes expressed in preparasitic second-stage juveniles (J2) of plant-parasitic nematodes appear to be vulnerable to RNA interference (RNAi) in vitro by coupling double-stranded (ds)RNA soaking with the artificial stimulation of pharyngeal pumping. Also, there is mounting evidence that the in planta generation of nematode-specific double-stranded RNAs (dsRNAs) has real utility in the control of these pests. Although neuronally-expressed genes in Caenorhabditis elegans are commonly refractory to RNAi, we have discovered that neuronally-expressed genes in plant-parasitic nematodes are highly susceptible to RNAi and that silencing can be induced by simple soaking procedures without the need for pharyngeal stimulation. Since most front-line anthelmintics that are used for the control of nematode parasites of animals and humans act to disrupt neuromuscular coordination, we argue that intercellular signalling processes associated with neurons have much appeal as targets for transgenic plant-based control strategies for plant-parasitic nematodes. FMRFamide-like peptides (FLPs) are a large family of neuropeptides which are intimately associated with neuromuscular regulation, and our studies on flp gene function in plant-parasitic nematodes have revealed that their expression is central to coordinated locomotory activities. We propose that the high level of conservation in nervous systems across nematodes coupled with the RNAi-susceptibility of neuronally-expressed genes in plant-parasitic nematodes provides a valuable research tool which could be used to interrogate neuronal signalling processes in nematodes.

scholarly journals Signal pathways involved in microbe–nematode interactions provide new insights into the biocontrol of plant-parasitic nematodes

2019 ◽  
Vol 374 (1767) ◽  
pp. 20180317 ◽  
Author(s):  
Lian-Ming Liang ◽  
Cheng-Gang Zou ◽  
Jianping Xu ◽  
Ke-Qin Zhang
Keyword(s):  
Natural Enemies ◽  
Control Strategies ◽  
Microbial Pathogens ◽  
Parasitic Nematodes ◽  
Signal Pathways ◽  
Plant Parasitic Nematodes ◽  
Parasitic Fungi ◽  
Nematode Cuticle ◽  
Bacteria And Fungi ◽  
Plant Parasitic

Plant-parasitic nematodes (PPNs) cause severe damage to agricultural crops worldwide. As most chemical nematicides have negative environmental side effects, there is a pressing need for developing efficient biocontrol methods. Nematophagous microbes, the natural enemies of nematodes, are potential biocontrol agents against PPNs. These natural enemies include both bacteria and fungi and they use diverse methods to infect and kill nematodes. For instance, nematode-trapping fungi can sense host signals and produce special trapping devices to capture nematodes, whereas endo-parasitic fungi can kill nematodes by spore adhesion and invasive growth to break the nematode cuticle. By contrast, nematophagous bacteria can secrete virulence factors to kill nematodes. In addition, some bacteria can mobilize nematode-trapping fungi to kill nematodes. In response, nematodes can also sense and defend against the microbial pathogens using strategies such as producing anti-microbial peptides regulated by the innate immunity system. Recent progresses in our understanding of the signal pathways involved in microbe–nematode interactions are providing new insights in developing efficient biological control strategies against PPNs. This article is part of the theme issue ‘Biotic signalling sheds light on smart pest management'.

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