Serendipitous identification of Pratylenchus curvicauda from the grainbelt of Western Australia

F. Begum; J. Fosu-Nyarko; S. Sharma; B. MacLeod; S. Collins; M.G.K. Jones

doi:10.21307/jofnem-2019-046

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Serendipitous identification of Pratylenchus curvicauda from the grainbelt of Western Australia

Journal article

Open access

Peer reviewed

Serendipitous identification of Pratylenchus curvicauda from the grainbelt of Western Australia

F. Begum, J. Fosu-Nyarko, S. Sharma, B. MacLeod, S. Collins and M.G.K. Jones

Journal of Nematology, Vol.51, pp.1-15

2019

DOI: https://doi.org/10.21307/jofnem-2019-046

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Abstract

A Pratylenchus species identified during a survey of Pratylenchus quasitereoides incidence at four locations of the grainbelt of Western Australia is described. Morphological and morphometric features indicated the previously undescribed morphotypes in nematode mixtures encountered were conspecific to P. curvicauda, and were clearly distinguishable from nine common Pratylenchus spp. Typical features of P. curvicauda were its body length (415–540 µm), which was curved to a c-shaped with a maximum body diameter of 20 µm, and the nature of its tail; 34 µm long, 2.8 µm wide at the anus and a typical ventrally arcuate with a round terminus. Sequenced for the first time, the sequences of the partial 18S-ITS1-5.8S-ITS2-partial 28S (80 clones, 14 individual nematodes) and the 28S-D3 (17 clones) regions of the rDNA of P. curvicauda had overall mean distances of 0.013 and 0.085, respectively. Phylogenetic analyses with sequences of both segments of the rDNA clearly showed the P. curvicauda isolates as monophyletic, distinct from ca 40 Pratylenchus species. Notably, it was distinct from Pratylenchus species present in Australia including P. quasitereoides and a Western Australia isolate of P. thornei. Further research into the biology of P. curvicauda is needed to facilitate development of strategies for its management, if it is an important pest.

Details

Title: Serendipitous identification of Pratylenchus curvicauda from the grainbelt of Western Australia
Authors/Creators: F. Begum (Author/Creator) - Murdoch University
J. Fosu-Nyarko (Author/Creator) - Murdoch University
S. Sharma (Author/Creator) - Department of Primary Industries and Regional Development
B. MacLeod (Author/Creator) - Department of Primary Industries and Regional Development
S. Collins (Author/Creator) - Department of Primary Industries and Regional Development
M.G.K. Jones (Author/Creator) - Murdoch University
Publication Details: Journal of Nematology, Vol.51, pp.1-15
Publisher: Society of Nematologists
Identifiers: 991005540099107891
Copyright: © 2019 Authors
Murdoch Affiliation: State Agricultural Biotechnology Centre
Language: English
Resource Type: Journal article

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Collaboration types: Domestic collaboration
Citation topics: 3 Agriculture, Environment & Ecology; 3.97 Plant Pathology; 3.97.1108 Nematode Management
Web Of Science research areas: Zoology
ESI research areas: Plant & Animal Science