Dataset Information

First report of Mesocriconema xenoplax (Nematoda: Criconematidae) from turfgrass in Portugal and in Europe.

ABSTRACT: In Winter 2016, root and soil samples were collected from the rhizosphere soil at 10 to 15?cm depth of turfgrass, in the yard of a complex of houses in Caxias, a region near Lisbon, Portugal. The grass (dominated by tall fescue) showed yellow patches, stunting, and poor growth. Several specimens of a ring nematode (50-60 nematodes/100?ml soil) were recovered from soil and identified as Mesocriconema xenoplax (peach ring nematode) based on morphological and morphometrical analysis of females. The observed morphological features were with previous descriptions. Species identification was confirmed through sequencing of the fragment spanning D2/D3 domain of the 28S rDNA gene. Phylogenetic analysis revealed that the Portuguese isolate grouped with M. xenoplax isolates (98% similarity), supporting its identification as M. xenoplax. This is the first report of M. xenoplax from turfgrass in Portugal and in Europe contributing with additional information on the distribution of this phytoparasite.In Winter 2016, root and soil samples were collected from the rhizosphere soil at 10 to 15?cm depth of turfgrass, in the yard of a complex of houses in Caxias, a region near Lisbon, Portugal. The grass (dominated by tall fescue) showed yellow patches, stunting, and poor growth. Several specimens of a ring nematode (50-60 nematodes/100?ml soil) were recovered from soil and identified as Mesocriconema xenoplax (peach ring nematode) based on morphological and morphometrical analysis of females. The observed morphological features were with previous descriptions. Species identification was confirmed through sequencing of the fragment spanning D2/D3 domain of the 28S rDNA gene. Phylogenetic analysis revealed that the Portuguese isolate grouped with M. xenoplax isolates (98% similarity), supporting its identification as M. xenoplax. This is the first report of M. xenoplax from turfgrass in Portugal and in Europe contributing with additional information on the distribution of this phytoparasite.

SUBMITTER: Inacio ML

PROVIDER: S-EPMC6916144 | biostudies-literature | 2019

REPOSITORIES: biostudies-literature

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First report of <i>Mesocriconema xenoplax</i> (Nematoda: Criconematidae) from turfgrass in Portugal and in Europe.

Inácio M L ML Rusinque L C LC Camacho M J MJ Nóbrega F F

Journal of nematology 20190101

In Winter 2016, root and soil samples were collected from the rhizosphere soil at 10 to 15 cm depth of turfgrass, in the yard of a complex of houses in Caxias, a region near Lisbon, Portugal. The grass (dominated by tall fescue) showed yellow patches, stunting, and poor growth. Several specimens of a ring nematode (50-60 nematodes/100 ml soil) were recovered from soil and identified as <i>Mesocriconema xenoplax</i> (peach ring nematode) based on morphological and morphometrical analysis of femal ...[more]

PMID: 31339252

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Project description:Mesocriconema abolafiai n. sp. is described by morphological, morphometric, and molecular approaches. The new species is characterized by a body slightly curved with 402 to 612 μm length, 90 to 113 cuticular body annuli with smooth to irregular margins lacking of crenation with not more than one anastomoses, lip region not offset, small flattened submedian lobes, stylet robust (52.8-60.0 µm) with well-developed knobs, open vulva with simple anterior lip, straight vagina, filled spermatheca with globular sperms, presence of males, and conical-acute tail with last annulus bilobed or rounded. Discussions are made on the characterization of M. abolafiai n. sp. from the most closely related species, M. ozarkiense, and several other species having similar tail shape. Furthermore, results of phylogenetic analyses inferred from D2 to D3 expansion fragments of 28S rRNA, 18S rRNA, and ITS rRNA gene sequences revealed the phylogenetic position of the new species within representatives of Criconematidae and supported morphological justifications for considering this population from Iran as a new species in the genus Mesocriconema.Mesocriconema abolafiai n. sp. is described by morphological, morphometric, and molecular approaches. The new species is characterized by a body slightly curved with 402 to 612 μm length, 90 to 113 cuticular body annuli with smooth to irregular margins lacking of crenation with not more than one anastomoses, lip region not offset, small flattened submedian lobes, stylet robust (52.8-60.0 µm) with well-developed knobs, open vulva with simple anterior lip, straight vagina, filled spermatheca with globular sperms, presence of males, and conical-acute tail with last annulus bilobed or rounded. Discussions are made on the characterization of M. abolafiai n. sp. from the most closely related species, M. ozarkiense, and several other species having similar tail shape. Furthermore, results of phylogenetic analyses inferred from D2 to D3 expansion fragments of 28S rRNA, 18S rRNA, and ITS rRNA gene sequences revealed the phylogenetic position of the new species within representatives of Criconematidae and supported morphological justifications for considering this population from Iran as a new species in the genus Mesocriconema.

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Dataset Information

First report of Mesocriconema xenoplax (Nematoda: Criconematidae) from turfgrass in Portugal and in Europe.

Publications

First report of <i>Mesocriconema xenoplax</i> (Nematoda: Criconematidae) from turfgrass in Portugal and in Europe.

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