The Nematode Parasites of Potato

Mugniéry, Didier; Phillips, M. S.

doi:10.1016/b978-044451018-1/50068-3

Cited by 19 publications

(12 citation statements)

References 38 publications

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“…Potato cyst nematodes originated in the Andes Mountains in South America in the region around the Lake Titicaca (Mugniery and Philips ). The most resistant genotypes of potato might therefore be expected in this region.…”

Section: Discussionmentioning

confidence: 99%

Characterization of resistance to Globodera rostochiensis pathotype Ro1 in cultivated and wild potato species accessions from the Vavilov Institute of Plant Industry

et al. 2014

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Potato cyst nematodes (PCN) collected in six localities in the Leningrad region of North West Russia were identified as Globodera rostochiensis pathotype Ro1 and were used for subsequent resistance tests. Seventynine accessions of cultivated and closely related wild potato species from the VIR collection in Russia were screened on resistance to G. rostochiensis pathotype Ro1 and on the presence of molecular markers for H1 and Gro1-4 resistance genes. No associations were detected between the resistance level of diploid and tetraploid Andean and tetraploid Chilean potato landraces (indigenous cultivars) and their related wild species and their geographical distribution or presence of PCR-based markers that are associated with the H1 and Gro1-4 genes. At the same time, all susceptible genotypes lacked such markers. New sources of resistance were found and could be used in breeding.

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Section: Discussionmentioning

confidence: 99%

Characterization of resistance to Globodera rostochiensis pathotype Ro1 in cultivated and wild potato species accessions from the Vavilov Institute of Plant Industry

et al. 2014

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“…The damage caused by the parasitic root cyst nematode Globodera pallida (Greco 1988;Mugniéry and Phillips 2007) is a major yield-limiting factor in potato cultivation. Under poor nematode management, yield losses induced by G. pallida can range from 20 to 70%.…”

Section: Introductionmentioning

confidence: 99%

Using SNP markers to dissect linkage disequilibrium at a major quantitative trait locus for resistance to the potato cyst nematode Globodera pallida on potato chromosome V

et al. 2008

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The damage caused by the parasitic root cyst nematode Globodera pallida is a major yield-limiting factor in potato cultivation . Breeding for resistance is facilitated by the PCR-based marker 'HC', which is diagnostic for an allele conferring high resistance against G. pallida pathotype Pa2/3 that has been introgressed from the wild potato species Solanum vernei into the Solanum tuberosum tetraploid breeding pool. The major quantitative trait locus (QTL) controlling this nematode resistance maps on potato chromosome V in a hot spot for resistance to various pathogens including nematodes and the oomycete Phytophthora infestans. An unstructured sample of 79 tetraploid, highly heterozygous varieties and breeding clones was selected based on presence (41 genotypes) or absence (38 genotypes) of the HC marker. Testing the clones for resistance to G. pallida conWrmed the diagnostic power of the HC marker. The 79 individuals were genotyped for 100 single nucleotide polymorphisms (SNPs) at 10 loci distributed over 38 cM on chromosome V. Forty-Wve SNPs at six loci spanning 2 cM in the interval between markers GP21-GP179 were associated with resistance to G. pallida. Based on linkage disequilibrium (LD) between SNP markers, six LD groups comprising between 2 and 18 SNPs were identiWed. The LD groups indicated the existence of multiple alleles at a single resistance locus or at several, physically linked resistance loci. LD group C comprising 18 SNPs corresponded to the 'HC' marker. LD group E included 16 SNPs and showed an association peak, which positioned one nematode resistance locus physically close to the R1 gene family.Communicated by J. E. Bradshaw. Electronic supplementary materialThe online version of this article

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“…lower interspecific competition). In cyst nematodes, which are also sedentary endoparasites like root‐knot nematodes, the production of males is attributed to heavy root infestation and thus high intra‐host density (Mugniéry & Phillips, ). Keeping in mind that two or even three generations of M. chitwoodi took place during the time of the experiment, it is hypothesized that intraspecific competition occurred in the roots heavily infested with M. chitwoodi in LT by the end of the experiment after an important multiplication.…”

Section: Discussionmentioning

confidence: 99%

Impact of native plant‐parasitic nematode communities on the establishment ofMeloidogyne chitwoodi

et al. 2018

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Among plant‐parasitic nematodes (PPNs), the species Meloidogyne chitwoodi constitutes an important agricultural issue and is listed as a quarantine species in the EU. This study investigated whether PPN communities can affect the establishment and expansion of M. chitwoodi during a simulated introduction. An original experimental design was developed on potato in the glasshouse involving four PPN communities derived from a single natural one that was initially grown on different host plants. Meloidogyne chitwoodi was inoculated at two different densities (50 or 1000 second‐stage juveniles (J2) per pot). After 4 months, M. chitwoodi was more abundant in the community showing a low overall abundance of PPNs, decreased in the other PPN communities and failed to establish in five pots out of 80. Results showed that establishment – even starting from a very low inoculum – can occur in all communities even if indigenous PPNs in the community affect the expansion through interspecific competition. The reverse interaction was also observed as PPN taxa were generally less abundant in the 1000 M. chitwoodi J2 inoculation treatments. The proportion of M. chitwoodi males produced was higher in the community showing low overall PPN abundance, suggesting a strong sensitivity of M. chitwoodi to intraspecific competition. The presented results suggest that a low abundance of indigenous PPNs presents a higher risk of expansion of M. chitwoodi even if the introduced inoculum is low.

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The Nematode Parasites of Potato

Cited by 19 publications

References 38 publications

Characterization of resistance to Globodera rostochiensis pathotype Ro1 in cultivated and wild potato species accessions from the Vavilov Institute of Plant Industry

Characterization of resistance to Globodera rostochiensis pathotype Ro1 in cultivated and wild potato species accessions from the Vavilov Institute of Plant Industry

Using SNP markers to dissect linkage disequilibrium at a major quantitative trait locus for resistance to the potato cyst nematode Globodera pallida on potato chromosome V

Impact of native plant‐parasitic nematode communities on the establishment ofMeloidogyne chitwoodi

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