Migratory plant‐parasitic nematodes associated with cereals in Scotland

Boag, B.; Bowen, S. A.; Spaull, A. M.; Wright, G. M.; Smith, Bs

doi:10.1111/j.1744-7348.1990.tb04226.x

Cited by 6 publications

(4 citation statements)

References 20 publications

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“…have a shorter generation time and smaller body size which can enhance their fast population increase after environmental changes (Yeates & Lee, 1997). Moreover, Boag and Alphey (1988) observed that P. nanus populations increased rapidly a year after nematicide application of 1,3-dichloropropene in a tree nursery field. They concluded that this nematode has an r survival strategy, which means that its numbers increase rapidly in the absence of competition and show seasonal fluctuations.…”

Section: Discussionmentioning

confidence: 96%

“…Currently, growers mainly control nematodes in lettuce by chemical soil disinfestation, which is also applied to reduce several other soilborne pathogens. Boag and Alphey (1988) observed that the population of P. nanus increased drastically after the application of the fumigant 1,3-dichloropropene in a forest nursery field. They concluded that this nematode has an r survival strategy, which means that its numbers increase rapidly in the absence of competition and show seasonal fluctuations.…”

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confidence: 96%

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A thorough study of a Paratylenchus sp. in glasshouse‐grown lettuce: Characterisation, population dynamics, host plants and damage threshold as keys to its integrated management

Claerbout

Vandevelde²,

Venneman³

et al. 2020

Annals of Applied Biology

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In glasshouses practising monoculture of butterhead lettuce in Belgium, high densities of pin nematodes (Paratylenchus spp.) are frequently associated with reduced plant growth. Growers currently apply chemical soil disinfestation measures to manage this problem, although stricter phytosanitary regulations are forcing a shift towards integrated management. Efficient implementation of such management requires knowledge about the factors influencing nematode population dynamics, and the damage threshold for lettuce. The nematode populations in five Belgian glasshouses were monitored for at least 1 year by frequently soil sampling at 0-30 cm and 30-60 cm depth. An undescribed species of Paratylenchus was identified in all glasshouses based on morphological and molecular features. High nematode densities (>20,000 (100 ml soil) −1) occurred in winter and spring. Chemical soil disinfestation lowered these populations greatly, although up to 14% survived in the deeper soil layer. After soil steaming under negative pressure, no pin nematodes were found. After 2 months of black fallow pin nematode densities were reduced by 50%-76%. Lamb's lettuce, parsley and wild rocket were found to be poor hosts in a pot experiment, while reproduction factors (P f /P i) on lettuce cultivars varied between 1 and 3. In three experiments with butterhead lettuce 'Cosmopolia' in pots with a series of 9 or 10 densities of Paratylenchus sp. [up to 35,000 (100 ml soil) −1 ], no damage to lettuce heads was observed. However, root weight and root quality were reduced, and the corresponding damage thresholds were rather low [1,754 and 362 Paratylenchus sp. (100 ml soil) −1 , respectively]. Management strategies such as crop rotation, soil disinfestation or fallow are recommended to avoid pin nematode population build-up.

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Section: Discussionmentioning

confidence: 96%

mentioning

confidence: 96%

A thorough study of a Paratylenchus sp. in glasshouse‐grown lettuce: Characterisation, population dynamics, host plants and damage threshold as keys to its integrated management

Claerbout

Vandevelde²,

Venneman³

et al. 2020

Annals of Applied Biology

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“…In intensive agricultural systems where the loss of biodiversity leads to low competition levels, drastic increases in the population of Paratylenchus spp. were associated with plant damage (Boag and Alphey 1988;Claerbout et al 2021). However, there is a lack of studies of how they interact with their putative hosts or their population levels in specific crops in systematic sampling schemes.…”

Section: Introductionmentioning

confidence: 99%

Distribution, Ecological Factors, Molecular Diversity, and Specific PCR for Major Species of Pin Nematodes (Paratylenchus spp.) in Prunus Plantations in Spain

Clavero-Camacho

Cantalapiedra‐Navarrete

Archidona-Yuste

et al. 2022

Plant Disease

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This study aimed to evaluate the prevalence and distribution of Paratylenchus species in the main areas of Prunus spp. production in Spain, their ecological constraints and new molecular tools for the specific identification of major species. Pin nematodes are recognized as plant-parasitic nematodes (PPN) with a wide host range and global distribution. Therefore, understanding the environmental and agronomic factors involved in their distribution is critical to design environmental and sustainable management strategies to reduce plant damage. A total of 219 sampling sites were surveyed and twelve Paratylenchus species were identified based on integrative taxonomic approach (P. baldaccii, P. enigmaticus, P. goodeyi, P. hamatus, P. holdemani, P. indalus, P. israelensis, P. pedrami, P. tateae, P. tenuicaudatus, P. veruculatus, and P. zurgenerus). The most common pin nematode was P. hamatus, followed by P. tenuicaudatus. Nematode abundance was influenced by climatic characteristics, soil chemical properties and agronomic management practices. Nine explanatory variables were selected as the most strongly associated with Paratylenchus distribution. Specifically, P. tenuicaudatus was significantly correlated with soil chemical characteristics, such as, pH, carbon, sulphur and sodium content. Whereas P. goodeyi was closely related to fields with less than 10 years of almond cultivation. Species-specific PCRs were developed for P. hamatus and P. tenuicaudatus and their validity was evaluated studying the molecular variability of these species and against other Paratylenchus species.

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“…on potatoes worldwide (Table ), there is still the need for further studies to understand their distribution and impact on potato crops in some countries. In the UK, for example, there are reports of root‐lesion nematodes from infested peas, bean, carrot, barley, and wheat fields (Corbett, ; Boag, , ; Boag and Lopez‐Llorca, ; Boag et al , ; Dale and Neilson, ), but there is no data regarding the affected areas and their impact on potato production.…”

Section: Root‐lesion Nematodes Infecting Potatoes: Biology Infectionmentioning

confidence: 99%

Root‐lesion nematodes of potato: Current status of diagnostics, pathogenicity and management

et al. 2020

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Root‐lesion nematodes of the genus Pratylenchus are migratory endoparasites with worldwide economic impact on several important crops including potato, where certain species like P. penetrans, P. neglectus, and P. scribneri reduce the yield and quality of potato tubers. Morphological identification of Pratylenchus spp. is challenging, and recent advancements in molecular techniques provide robust and rapid diagnostics to differentiate species without the need of specialist skills. However, the fact that molecular diagnostics are not available for all Pratylenchus species means that there are limitations in worldwide application. In general, root‐lesion nematodes are difficult to manage once introduced into agricultural land and damage can be related to pathogenicity and population densities. In addition, root‐lesion nematodes interact with fungi such as Verticillium dahliae, resulting in disease complexes that enhance the damage inflicted on the potato crop. Management interventions are often focused on limiting nematode reproduction before planting crops and include the application of nematicides, and cultural practices such as crop rotation, cover crops, biofumigation, and biological control. Understanding the limitations of the available crop protection strategies is important and there are many gaps for further study. This review discusses the status of the diagnosis, distribution, pathogenicity, and management of the main species of root‐lesion nematodes, reported to infect potatoes worldwide, and highlights areas for potential future research.

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Migratory plant‐parasitic nematodes associated with cereals in Scotland

Cited by 6 publications

References 20 publications

A thorough study of a Paratylenchus sp. in glasshouse‐grown lettuce: Characterisation, population dynamics, host plants and damage threshold as keys to its integrated management

A thorough study of a Paratylenchus sp. in glasshouse‐grown lettuce: Characterisation, population dynamics, host plants and damage threshold as keys to its integrated management

Distribution, Ecological Factors, Molecular Diversity, and Specific PCR for Major Species of Pin Nematodes (Paratylenchus spp.) in Prunus Plantations in Spain

Root‐lesion nematodes of potato: Current status of diagnostics, pathogenicity and management

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