Multiple species-specific controls of root-feeding nematodes in natural soils

Piskiewicz, A.M.; Duyts, Henk; Putten, Wim H. van der

doi:10.1016/j.soilbio.2008.07.006

Cited by 25 publications

(23 citation statements)

References 46 publications

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“…2 and 3). In 300 agreement with previous studies (Piśkiewicz et al, 2007;2008), the addition of microorganisms 301 had a greater control effect than addition of microarthropods. Piśkiewicz et al (2008) also found 302 that ectoparasites were more strongly controlled than the endoparasites.…”

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confidence: 86%

Top-down control of root-feeding nematodes in range-expanding and congeneric native plant species

Viketoft

Putten

2015

Basic and Applied Ecology

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Please cite this article as: Viketoft, M., and van der Putten, W. H.,Top-down control of root-feeding nematodes in range-expanding and congeneric native plant species, Basic and Applied Ecology (2014), http://dx.doi.org/10.1016/j.baae. 2014.12.006 This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain. Climate warming may result in range expansion of species towards previously colder 22 environments, and it has been demonstrated that in the new range successfully range-expanding 23 plant species can be less attacked by aboveground and belowground enemies than congeneric 24 natives. Plant enemies may be controlled naturally by complex bottom-up and top-down 25 interactions with their hosts, however, little is known about how these interactions may operate in 26 the new range. Here, we examine how root-feeding nematodes are controlled in the root zone of 27 successfully range-expanding plant species in comparison with congeneric plant species native to 28 the new range. As range-expanding plant species can have less negative soil feedback than 29 congeneric natives, we tested the hypothesis that top-down control of root-feeding nematodes 30may be strongest on range-expanding plant species. To test this, we grew 4 pairs of range-31 expanding plant species and their native congeners in field soil, to which we added soil microbes, 32 nematodes, or microarthropods from the new habitat. Addition of soil microorganisms and 33 microarthropods reduced the numbers of root-feeding nematodes, being strongest when 34 microorganisms were added. Opposite to our expectation, nematode control was not more 35 effective in the root zone of range-expanding than native plant species. We conclude that top-36 down control of root-feeding nematodes is highly plant species-specific and that top-down 37 control of these nematodes in the root zone of range-expanding plant species can be as effective 38 as in the root zone of congeneric natives. 39 40 41

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confidence: 86%

Top-down control of root-feeding nematodes in range-expanding and congeneric native plant species

Viketoft

Putten

2015

Basic and Applied Ecology

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“…Selective removal and inoculation experiments have revealed that PPN populations could be controlled by microorganisms present in soil filtrates (Piskiewicz et al 2007(Piskiewicz et al , 2008. Further assays suggested that such microorganisms could not produce a systemic effect through the plant, and were indeed acting directly on the nematode populations (Piskiewicz et al 2009).…”

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confidence: 99%

Interactions between nematodes and their microbial enemies in coastal sand dunes

et al. 2012

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European foredunes are almost exclusively colonised by Ammophila arenaria, and both the natural succession and the die-out of this plant have been linked to populations of plant-parasitic nematodes (PPN). The overarching aim of this study was to investigate top-down control processes of PPN in these natural ecosystems through comparative analyses of the diversity and dynamics of PPN and their microbial enemies. Our specific aims were, first, to identify and quantify PPN microbial enemies in European sand dunes; second, to assess their life history traits, their spatial and temporal variation in these ecosystems, and third, to evaluate their control potential of PPN populations. This was done by seasonal sampling of a range of sites and making observations on both the nematode and the microbial enemy communities in rhizosphere sand. Nine different nematode microbial enemies belonging to different functional groups were detected in European sand dunes. Their high diversity in these low productivity ecosystems could both result from or lead to the lack of dominance of a particular nematode genus. The distribution of microbial enemies was spatially and temporally variable, both among and within sampling sites. Obligate parasites, either with low host-specificity or having the ability to form an environmentally resistant propagule, are favoured in these ecosystems and are more frequent and abundant than facultative parasites. Three microbial enemies correlated, either positively or negatively, with PPN population size: Catenaria spp., Hirsutella rhossiliensis and Pasteuria penetrans. Microbial-enemy supported links in the food-web may be involved in the control of PPN populations through indirect effects. The endospore-forming P. penetrans was the most successful top-down control agent, and was implicated in the direct control of Meloidogyne spp. and indirect facilitation of Pratylenchus spp. Overall, our findings suggest strong and diverse top-down control effects on the nematode community in these natural ecosystems.

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“…Most of the studies concerned with the suppressive activity of soils to plant-parasitic nematodes have been based mainly on the comparison between agricultural and natural soils or among natural soils, and concluded that natural soils are more suppressive than agricultural soils (Sánchez-Moreno et al, 2007, 2008aMcSorley et al, 2008;Piskiewicz et al, 2008). McSorley et al (2008) suggested that although the population of free-living nematodes was not related to the suppression of rootknot nematodes in natural soil, the nematode food web was enriched and plant-parasitic nematodes decreased.…”

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“…However, little evidence is available to support the idea that interactions with other nematodes may contribute to the suppression of root-knot nematodes. Piskiewicz et al (2008) observed the suppression of root-feeding nematodes in natural soils and concluded that a range of biocontrol mechanisms were more effective than a single control agent. Therefore, the understanding of native soil biota in productive soils is a particular concern for judging suitable management practices.…”

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Suppression of Meloidogyne incognita in different agricultural soils and possible contribution of soil fauna

Min

Toyota

2013

Nematol

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A total of 12 soils collected from different agricultural fields, having different backgrounds of organic input, were evaluated for their suppressive potential against Meloidogyne incognita. Second-stage juveniles (J2) of M. incognita were inoculated into the soils and their survival was evaluated. The number of M. incognita J2 5 days after inoculation differed depending on soil and was significantly lower in two soils, suggesting higher suppressiveness against M. incognita in these soils. This was confirmed by an experiment using tomato as a test plant, in which the gall formation was significandy lower in the two soils than in other soils. To estimate the contribution of below-ground biota to the suppressiveness, numbers of nematodes (predator, omnivore, bactedvore and fungivore) and other soil fauna such as tardigrades and rotifers, were counted. Some soil chemical and biological properties were also measured. Results from multiple linear regression analysis suggested that the number of rotifers, microbial activity, soil pH and total C may be involved in the suppression. The relationship between the suppressiveness and soil chemical and biological parameters is discussed.

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Multiple species-specific controls of root-feeding nematodes in natural soils

Cited by 25 publications

References 46 publications

Top-down control of root-feeding nematodes in range-expanding and congeneric native plant species

Top-down control of root-feeding nematodes in range-expanding and congeneric native plant species

Interactions between nematodes and their microbial enemies in coastal sand dunes

Suppression of Meloidogyne incognita in different agricultural soils and possible contribution of soil fauna

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