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Occurrence of Meloidogyne morocciensis parasitizing beetroot in Brazil

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Abstract

Beetroot plants cv. Boro exhibiting multiple root galls similar to those symptoms associated with root-knot nematodes (RKNs) were detected in the municipality of Rio Grande, Rio Grande do Sul state, Brazil. The nematode identification was based on an integrative taxonomy. Perineal patterns of females were similar to Meloidogyne arenaria and M. incognita whereas isoenzymatic phenotypes α-esterase A3 and malate dehydrogenase N1 were typical to M. morocciensis. Measurements of second-stage juveniles and males corresponded to the same species. Beetroot plants inoculated with 2.000 specimens of RKN showed reduction of fresh weight of shoots (37%) and roots (30%). The nematode reproduction factor was 11.9. Our study provides the first evidence that M. morocciensis causes root-knot disease in beetroot cv. Boro in Brazil and elsewhere.

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Acknowledgements

We gratefully acknowledge the financial support of the Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) of Brazil.

Funding

This study was supported by Coordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES) - Brazil.

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Authors and Affiliations

  1. Departamento de Fitossanidade, Faculdade de Agronomia Eliseu Maciel, Universidade Federal de Pelotas, Pelotas, Rio Grande do Sul, 96010-900, Brazil

    Cielo Pamela Machaca-Calsin, Wellington Rodrigues da Silva & Jerônimo Vieira de Araújo Filho

  2. Clínica Fitossanitária, ASCAR/Emater/Embrapa, Pelotas, Rio Grande do Sul, 96010-900, Brazil

    Patricia da Silva Grinberg

  3. Embrapa Clima Temperado, Laboratório de Fitopatologia e Nematologia, Pelotas, Rio Grande do Sul, 96010-971, Brazil

    Cesar Bauer Gomes

Authors
  1. Cielo Pamela Machaca-Calsin
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  2. Wellington Rodrigues da Silva
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  3. Patricia da Silva Grinberg
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  4. Jerônimo Vieira de Araújo Filho
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  5. Cesar Bauer Gomes
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Contributions

All authors contributed to the study conception and design. All authors revised all previous versions of the manuscript.

Corresponding author

Correspondence to Cielo Pamela Machaca-Calsin.

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The authors declare that this paper has not been submitted to more than one journal for simultaneous consideration. There was no conflict of interest among authors and consent to submit has been received explicitly from all co-authors and the institute where the work has been carried out.

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Machaca-Calsin, C.P., da Silva, W.R., da Silva Grinberg, P. et al. Occurrence of Meloidogyne morocciensis parasitizing beetroot in Brazil. Eur J Plant Pathol 160, 239–242 (2021). https://doi.org/10.1007/s10658-021-02231-w

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