Plant-parasitic nematodes associated with olive tree (Olea europaea L.) with a focus on the Mediterranean Basin: A review

Ali, Nawal; Chapuis, Élodie; Tavoillot, Johannes; Mateille, Thierry

doi:10.1016/j.crvi.2014.05.006

Cited by 48 publications

(39 citation statements)

References 51 publications

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“…vallense , X . vuittenezi and several unidentified species) reported in various countries of the Mediterranean Basin [18, 28, 33, 34, 42, 80]. The present results increase the previous data about diversity of Xiphinema species detected in olive worldwide, including four new species from the X .…”

Section: Discussionsupporting

confidence: 85%

“…Several authors have highlighted the great diversity of Xiphinema spp. detected in the Iberian Peninsula [13, 18, 28, 34–36]. In particular around 40 species of the genus Xiphinema have been reported in Spain, mainly associated with woody, ornamental and vegetable plant species [11, 13, 16–18, 37, 38].…”

Section: Introductionmentioning

confidence: 99%

“…Wild and cultivated olives are hosts and damaged by PPN, including dagger nematodes ( Xiphinema spp.) [34, 42]. However, little information is available about Xiphinema spp.…”

Section: Introductionmentioning

confidence: 99%

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Remarkable Diversity and Prevalence of Dagger Nematodes of the Genus Xiphinema Cobb, 1913 (Nematoda: Longidoridae) in Olives Revealed by Integrative Approaches

Archidona-Yuste

Navas‐Cortés

Cantalapiedra‐Navarrete

et al. 2016

PLoS ONE

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The genus Xiphinema includes a remarkable group of invertebrates of the phylum Nematoda comprising ectoparasitic animals of many wild and cultivated plants. Damage is caused by direct feeding on root cells and by vectoring nepoviruses that cause diseases on several crops. Precise identification of Xiphinema species is critical for launching appropriate control measures. We make available the first detailed information on the diversity and distribution of Xiphinema species infesting wild and cultivated olive in a wide-region in southern Spain that included 211 locations from which 453 sampling sites were analyzed. The present study identified thirty-two Xiphinema spp. in the rhizosphere of olive trees, ten species belonging to Xiphinema americanum-group, whereas twenty-two were attributed to Xiphinema non-americanum-group. These results increase our current knowledge on the biodiversity of Xiphinema species identified in olives and include the description of four new species (Xiphinema andalusiense sp. nov., Xiphinema celtiense sp. nov., Xiphinema iznajarense sp. nov., and Xiphinema mengibarense sp. nov.), and two new records for cultivate olives (X. cadavalense and X. conurum). We also found evidence of remarkable prevalence of Xiphinema spp. in olive trees, viz. 85.0% (385 out of 453 sampling sites), and they were widely distributed in both wild and cultivated olives, with 26 and 17 Xiphinema spp., respectively. Diversity indexes (Richness, Hill´s diversity, Hill´s reciprocal of D and Hill´s evenness) were significantly affected by olive type. We also developed a comparative morphological and morphometrical study together with molecular data from three nuclear ribosomal RNA genes (D2-D3 expansion segments of 28S, ITS1, and partial 18S). Molecular characterization and phylogenetic analyses allowed the delimitation and discrimination of four new species of the genus described herein and three known species. Phylogenetic analyses of Xiphinema spp. resulted in a general consensus of these species groups. This study is the most complete phylogenetic analysis for Xiphinema non-americanum-group species to date.

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Section: Discussionsupporting

confidence: 85%

Section: Introductionmentioning

confidence: 99%

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Remarkable Diversity and Prevalence of Dagger Nematodes of the Genus Xiphinema Cobb, 1913 (Nematoda: Longidoridae) in Olives Revealed by Integrative Approaches

Archidona-Yuste

Navas‐Cortés

Cantalapiedra‐Navarrete

et al. 2016

PLoS ONE

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“…However, this species was not related morphologically to the other species associated with olive such as M. arenaria, M. artiellia, M. baetica, M. hapla, M. incognita, M. javanica, and M. lusitanica (Castillo et al 2010;Ali et al 2014) (see Table 2). The main character in its juveniles associated with the long tail and hyaline region indicates this species would be associated with the Bgraminis^group (Jepson 1987).…”

Section: Discussionmentioning

confidence: 86%

A new root-knot nematode Meloidogyne spartelensis n. sp. (Nematoda: Meloidogynidae) in Northern Morocco

et al. 2015

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Low density of an unknown root-knot nematode was found on wild olive soils at Cape Spartel near Tanger city in northern Morocco. Morphometry, esterase and malate dehydrogenase electrophoretic phenotypes, as well as ribosomal DNA (rDNA) and mitochondrial DNA (mtDNA) sequences demonstrated that this nematode species differs clearly from other previously described rootknot nematodes. The species is herein described, illustrated and named as Meloidogyne spartelensis n. sp. This new root-knot nematode can be morphologically distinguished from other Meloidogyne spp. by: (i) roundish perineal pattern, dorsal arch low, with fine, sinuous cuticle striae, lateral field faintly visible; (ii) female excretory pore posterior to stylet knobs, EP/ST ratio 1.4-2.0; (iii) second-stage juveniles with hemizonid located 1 to 2 annuli anterior to excretory pore and long, sub-digitate tail; and (iv) males with lateral field composed of four incisures, with areolated outer bands. Phylogenetic trees based on 18S, ITS1-5.8S-ITS2, D2-D3 of 28S rDNA, and partial coxII-16S rRNA and coxI gene of mtDNA showed that M. spartelensis n. sp. belongs to an undescribed root-knot nematode lineage that is clearly separated from other species with resemblance in morphology, such as M. dunensis, M. kralli, and M. sewelli.

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“…M. arenaria, M. incognita and M. javanica have previously been reported on olive trees in the Mediterranean basin, Asia and South America [47]. It is suggested that these species have the same geographic distribution on various hosts [23].…”

Section: Discussionmentioning

confidence: 99%

Diversity of root-knot nematodes in Moroccan olive nurseries and orchards: does Meloidogyne javanica disperse according to invasion processes?

et al. 2017

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BackgroundRoot-knot nematodes (RKN) are major pest of olive tree (Olea europaea ssp. europaea), especially in nurseries and high-density orchards. Soil samples were collected from main olive growing areas of Morocco, to characterize Meloidogyne species and to discuss the contribution of biotic and abiotic factors in their spatial distribution.ResultsRKN were found in 159 soil samples out of 305 from nurseries (52.1% occurrence) and in 11 out of 49 soil samples from orchards (23.2% occurrence). Biochemical and molecular characterisation (PAGE esterase and SCAR) revealed the dominance of M. javanica both in nurseries and orchards with minor presence of M. incognita only in nurseries, and M. arenaria in only one nursery. RKN were distributed on aggregated basis. Frequent presence of M. javanica in orchards might have come from nurseries. In contrast, the detection of M. incognita in nurseries alone suggests that this species could not reproduce in orchards because of either the competition with other plant-parasitic nematodes or unfit local habitats. The impact of environmental variables (climate, habitat origin and physicochemical characteristics of the substrates) on the distribution of Meloidogyne species is also discussed.ConclusionOlive nurseries in Morocco are not able to guarantee the safety of rooted plants. As a result, olive production systems are exposed to strong RKN invasion risks. Consequently, the use of healthy substrates in nurseries may prevent plant-parasitic nematode induction in orchards.

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Plant-parasitic nematodes associated with olive tree (Olea europaea L.) with a focus on the Mediterranean Basin: A review

Cited by 48 publications

References 51 publications

Remarkable Diversity and Prevalence of Dagger Nematodes of the Genus Xiphinema Cobb, 1913 (Nematoda: Longidoridae) in Olives Revealed by Integrative Approaches

Remarkable Diversity and Prevalence of Dagger Nematodes of the Genus Xiphinema Cobb, 1913 (Nematoda: Longidoridae) in Olives Revealed by Integrative Approaches

A new root-knot nematode Meloidogyne spartelensis n. sp. (Nematoda: Meloidogynidae) in Northern Morocco

Diversity of root-knot nematodes in Moroccan olive nurseries and orchards: does Meloidogyne javanica disperse according to invasion processes?

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