Meloidogyne paranaensis

 

Contents

 

Rev 12/11/2019

Parana Coffee Root-knot Nematode Classification Hosts
Morphology and Anatomy Life Cycle
Return to Meloidogyne Menu Economic Importance Damage
Distribution Management
Return to Heteroderidae Menu Feeding  References
    Go to Nemaplex Main Menu   Go to Dictionary of Terminology

Classification:

      Tylenchida
       Tylenchina
        Tylenchoidea
         Heteroderidae
          Meloidogyninae

           Meloidogyne paranaensis Carneiro, Carneiro, Abrantes, Santos, & Almeida. 1996

 

 

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Morphology and Anatomy:

 

  Female: 
   
   
   
   

Reported median body size for this species (Length mm; width micrometers; weight micrograms) - Click:

Second-stage juvenile


For over 20 years, M. paranaensis was mis-identified as M. incognita  until  morphological and molecular analyses established the new species (Carneiro et al., 1996).

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Distribution:

Brazil. One of 17 species of Meloidogyne reported on coffee.

M. paranaensis is currently only reported in Brazil and Guatemala.

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Economic Importance:

Reported on coffee in Paran State, Brazil. Considered the most destructive nematode pest of coffee in Brazil.

 

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Feeding:

Sedentary endoparasite.

Feeding site establishment and development typical of genus.

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Hosts:

Its main economic host is coffee, where it is considered as one of the most destructive root-knot nematode species.

In differential host tests, tobacco, watermelon, and tomato were good hosts, whereas cotton, pepper, and peanut were nonhosts (Carneiro et al., 1996).

Hosts include tobacco, watermelon, tomato, soybean, and weeds.

Nonhosts include cotton, pepper, peanut, oats, corn, and a number of grasses.

For an extensive host range list for this species, click

 

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Life Cycle:

Ecophysiological Parameters:

For Ecophysiological Parameters for this species, click If species level data are not available, click for genus level parameters

 

Mitotic parthenogenesis; 3n chromosome number 50-52.

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Damage:

In coffee, M. paranaensis does not cause typical root-knot nematode galls. Instead, the infection results in cracked cortical tissue on the taproot and necrotic spots along the roots, together with non-specific above-ground symptoms including chlorosis, leaf drop or plant death (Elling, 2013; Humphreys-Pereira et al., 2014).

Symptoms of Meloidogyne paranaensis parasitism in shoots and roots of coffee trees (Coffea arabica). a and b 1 and 8-year-old plants in Baixo Guandu municipality, Espirito Santo state, respectively. c and d Symptoms of thickening, splitting and cracking of the cortical root tissue
Plant Damage - coffee Root galls

 

 

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Management:

Host Plant Resistance, Non-hosts and Crop Rotation alternatives:

For plants reported to have some level of resistance to this species, click

 

 

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References:

Carneiro, R.M.G.D., Carneiro, R.G., Abrantes, I.M.O., Santos, M.S.N.A., Alemeida, M.R.A. 1996. Meloidogyne paranaensis n. sp. (Nemata: Meloidogynidae), a root-knot nematode parasitizing coffee in Brazil. J. Nematology 28:177-189.

Elling, A.A. 2013. Major Emerging Problems with Minor Meloidogyne Species. Phytopathology 103:1092-1102.

Humphreys-Pereira, D.A., Flores-Chavez, L., Gomez, M., Salazar, L. Gomez-Alpizar, L.E., Elling, A.A. 2014. Meloidogyne lopezi n.sp. (Nematode: Meloidogynidae, a new root-knot nematode�.. Nematology 16:643-661.

 

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Copyright © 1999 by Howard Ferris.
Revised: December 11, 2019.