Article CC BY 4.0
refereed
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Morphometric and molecular diversity among seven european isolates of pratylenchus penetrans

Affiliation
University of Florida, Department of Entomology and Nematology, Gainesville, United States
Bogale, Mesfin;
Affiliation
Justus Liebig University, Germany
Tadesse, Betre;
GND
1139864092
Affiliation
Julius Kühn-Institute (JKI), Institute for Epidemiology and Pathogen Diagnostics, Germany
Nuaima, Rasha Haj;
Affiliation
Justus Liebig University, Germany
Honermeier, Bernd;
GND
1058968084
Affiliation
Justus Liebig University, Gießen, Germany
Hallmann, Johannes;
Affiliation
University of Florida, Department of Entomology and Nematology, Gainesville, United States
DiGennaro, Peter

Pratylenchus penetrans is an economically important root‐lesion nematode species that affects agronomic and ornamental plants. Understanding its diversity is of paramount importance to develop effective control and management strategies. This study aimed to characterize the morphological and genetic diversity among seven European isolates. An isolate from the USA was included in the molecular analyses for comparative purposes. Morphometrics of the European P. penetrans isolates generally were within the range of the original descriptions for this species. However, multiple morphometric characteristics, including body length, maximum body width, tail length and length of the post‐vulval uterine sac showed discrepancies when compared to other populations. Nucleotide sequence‐based analyses revealed a high level of intraspecific diversity among the iso-lates. We observed no correlation between D2‐D3 rDNA‐ and COXI‐based phylogenetic similarities and geographic origin. Our phylogenetic analyses including selected GenBank sequences also sug-gest that the controversy surrounding the distinction between P. penetrans and P. fallax remains.

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