Rhabditid species (Nematoda, Rhabditida) recorded in peninsular Spain and Balearic Islands

Abolafia, Joaquín; Peña‐Santiago, Reyes

doi:10.3989/graellsia.2001.v57.i1.299

Cited by 14 publications

(9 citation statements)

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“…The highest diversity was found in the spiral nematode genus Helicotylenchus with 7 species, viz . H. canadensis , H. digonicus , H. dihystera , H. exallus, H. oleae , H. pseudorobustus , and H. vulgaris ( Table 1 ), which were previously reported in Spain [ 34 ] with the exception of H. oleae which is reported associated to olive rhizosphere for the first time. Overall, the total number of PPNs in each orchard ranged from 66 (field S2) to 16,288 (field S29) individuals/500-cm 3 soil and their percentage respect the total of PPNs in a sample ranged from 0.02% ( Trichodorus giennensis ) to 98.50% ( Helicotylenchus digonicus ) ( data not shown ).…”

Section: Resultsmentioning

confidence: 61%

Soil Properties and Olive Cultivar Determine the Structure and Diversity of Plant-Parasitic Nematode Communities Infesting Olive Orchards Soils in Southern Spain

et al. 2015

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This work has studied for the first time the structure and diversity of plant-parasitic nematodes (PPNs) infesting olive orchard soils in a wide-region in Spain that included 92 locations. It aims at determining which agronomical or environmental factors associated to the olive orchards are the main drivers of the PPNs community structure and diversity. Classical morphological and morphometric identification methods were used to determine the frequency and densities of PPNs. Thirteen families, 34 genera and 77 species of PPNs were identified. The highest diversity was found in Helicotylenchus genus, with six species previously reported in Spain and with H. oleae being a first report. Neodolichorhynchus microphasmis and Diptenchus sp., Diphtherophora sp., and Discotylenchus sp., usually considered fungal feeders, were also reported for the first time associated to olive rhizosphere. PPNs abundance ranged from 66 to 16,288 individuals/500-cm3 of soil with Helicotylenchus digonicus being the most prevalent species, followed by Filenchus sp., Merlinius brevidens and Xiphinema pachtaicum. Nematode abundance and diversity indexes were influenced by olive cultivar, and orchard and soil management practices; while olive variety and soil texture were the main factors driving PPN community composition. Soil physicochemical properties and climatic characteristics most strongly associated to the PPN community composition included pH, sand content and exchangeable K, and maximum and minimum average temperature of the sampled locations. Our data suggests that there is a high diversity of PPNs associated to olive in Southern Spain that can exert different damage to olive roots depending on the olive variety and their abundance. Further analysis to determine the resistance levels of most common olive varieties to the prevalent PPNs in Spain will help to choose the most appropriate ones for the establishment of new plantations. This choice will take into consideration the specific soils and environments where those olive varieties will be established.

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Section: Resultsmentioning

confidence: 61%

Soil Properties and Olive Cultivar Determine the Structure and Diversity of Plant-Parasitic Nematode Communities Infesting Olive Orchards Soils in Southern Spain

et al. 2015

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“…Approximately forty species of Longidorus have been reported from the Iberian Peninsula, including the recent descriptions of fifteen new species (Peña Santiago et al, 2003;Gutiérrez-Gutiérrez et al, 2013;Archidona-Yuste et al, 2016a). A survey of nematodes from cultivated and wild plants in Spain revealed the presence of thirteen unidentified populations of needle nematodes belonging to the genus Longidorus.…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogenetic analysis and comparative morphology reveals the diversity and distribution of needle nematodes of the genus Longidorus (Dorylaimida: Longidoridae) from Spain

Archidona-Yuste

Cantalapiedra‐Navarrete

Castillo

et al. 2019

Contributions to Zoology

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The genus Longidorus constitutes a large group of approximately 170 species of plant-ectoparasitic nematodes that are polyphagous and distributed almost worldwide. Some of the species of this genus are vectors of plant viruses. Species discrimination in Longidorus is difficult because the morphology is very conservative, and morphometric characters often overlap, leading to potential misidentification. Integrative taxonomy, based on the combination of molecular analyses with morphology, is a useful and necessary approach in Longidorus species identification. In Spain from 2014 to 2017, we conducted nematode surveys among cultivated and wild plants, from which we identified 13 populations of Longidorus, two of which appeared to represent new species and are described herein as L. iliturgiensis sp. nov. and L. pacensis sp. nov., and 11 populations belonging to eight known

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“…To date, 22 species of the genus Longidorus have been recorded from Spain (Peña Santiago et al ., ; Palomares‐Rius et al ., ; Gutiérrez‐Gutiérrez et al ., ). During nematode surveys conducted in cultivated and natural environments in southern Spain, 17 populations of Longidorus species, characterized by large to medium body and stylet length, appeared to be morphologically related to other known Longidorus spp.…”

Section: Introductionmentioning

confidence: 99%

Molecular phylogeny of the nematode genusLongidorus(Nematoda: Longidoridae) with description of three new species

Gutiérrez-Gutiérrez

Cantalapiedra‐Navarrete

Montes-Borrego

et al. 2013

Zool J Linn Soc

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The phylum Nematoda includes the genus Longidorus, a remarkable group of invertebrates that are polyphagous root‐ectoparasites of many plants including various agricultural crops and trees. Damage is caused by direct feeding on root cells as well as by transmitting nepoviruses. Species discrimination in Longidorus is complicated by phenotypic plasticity (intraspecific variability and minor interspecific differences) leading to potential misidentification. We conducted nematode surveys in cultivated and natural environments in southern Spain that detected 11 species of Longidorus. We developed a comparative study amongst these related species by considering morphological and morphometric features together with molecular data from nuclear ribosomal RNA genes [D2‐D3 expansion segments of large ribosomal subunit (28S), internal transcribed spacer 1 (ITS1), and partial small ribosomal subunit (18S)]. The results of our molecular and phylogenetic analyses confirmed the morphological hypotheses and allowed the delimitation and discrimination of three new species of the genus, described herein as Longidorus baeticus sp. nov., Longidorus oleae sp. nov., and Longidorus andalusicus sp. nov., and eight known species (Longidorus alvegus, Longidorus crataegi, Longidorus fasciatus, Longidorus intermedius, Longidorus iuglandis, Longidorus magnus, Longidorus rubi, and Longidorus vineacola). Phylogenetic analyses of Longidorus spp. based on the three molecular markers resulted in a general consensus of these species grouping, as lineages were maintained for the majority of species (i.e. species with a conoid‐rounded lip region, amphidial fovea asymmetrically bilobed, female tail bluntly rounded), but not in some others (i.e. positions of L. crataegi, L. intermedius, and L. rubi were quite variable). To date, this is the most complete phylogenetic analysis for Longidorus and Paralongidorus species, with the highest number of species included. No correspondence between phylogenetic trees and morphological characters was found for ribosomal markers, with the exception of amphidial shape. Thus, polyphasic identification, based on integration of molecular analysis with morphology, is a tool beyond doubt in Longidorus identification. © 2013 The Linnean Society of London

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Rhabditid species (Nematoda, Rhabditida) recorded in peninsular Spain and Balearic Islands

Cited by 14 publications

References 3 publications

Soil Properties and Olive Cultivar Determine the Structure and Diversity of Plant-Parasitic Nematode Communities Infesting Olive Orchards Soils in Southern Spain

Soil Properties and Olive Cultivar Determine the Structure and Diversity of Plant-Parasitic Nematode Communities Infesting Olive Orchards Soils in Southern Spain

Molecular phylogenetic analysis and comparative morphology reveals the diversity and distribution of needle nematodes of the genus Longidorus (Dorylaimida: Longidoridae) from Spain

Molecular phylogeny of the nematode genusLongidorus(Nematoda: Longidoridae) with description of three new species

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