Globodera tabacum

  

Contents

  

Rev 10/04/2023

Tobacco cyst nematode Classification Hosts
Morphology and Anatomy Life Cycle
Return to Globodera 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
          Punctoderinae
                  
Globodera tabacum (Lownsbery & Lownsbery, 1954) Behrens 1975

Three subspecies separated by small differences in morphology and in host range (per Subbotin et al., 2010):

Globodera tabacum solanacearum (type host horsenettle: Solanum carolinense)

Globodera tabacum tabacum (type host: tobacco)

Globodera tabacum virginiae (type host: horsenettle: Solanum carolinense)

Back to Top

Morphology and Anatomy:

Females: Cyst stage present. 

 

Body globose, spheroidal, with a short neck and no terminal cone.

 

 

All eggs retained in body (no egg-mass).

 
Cysts of Globodera tabacum
Males: Vermiform; body twisted into a C or S shape. 

Lateral field with four lines. 

Spicules greater than 30 µm in length, distally pointed. 

No cloacal tubus. 

Tail short, hemispherical.

Second-stage juveniles: Stylet less than 30 µm long.

Lateral field with four lines.

Esophageal glands filling body cavity. 

Tail conical, pointed, with terminal half hyaline.

 

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

 

Back to Top

Distribution:

  Described originally on tobacco in USA, recorded in Japan in greenhouse-grown eggplant in 1998 (Uehara and Momota, 2018).

Back to Top

Economic Importance:

 

Back to Top

Feeding:

Sedentary semi-endoparasite of roots

Feeding site and feeding patterns typical of genus Globodera.

Nurse cell system is a multinucleate syncytium.

Back to Top

Hosts:

Tobacco and other Solanaceae.

For an extensive host range list for this species, click
 

Very narrow range: potato, tomato, and some weeds.

 

Back to Top

Life Cycle:

Ecophysiological Parameters:

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

 
 
White females and cysts of Globodera tabacum on root surface.  
Back to Top

Damage:

Stunted tobacco plants in a field infested with G. tabacum.

Photograph by J.A. Fox, VPI.

 

Back to Top

Management:

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

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

References:

Luc, Maggenti & Fortuner, Rev. Nematol. 11(2):159-176 (1988)

Uehara, T. and Momota, Y. 2018. Reproduction of tobacco cyst nematode Globodera tabacum on several Japanese tomato cultivars. Nematological Research 48:27-30.


Back to Top
Copyright © 1999 by Howard Ferris.
Revised: October 04, 2023.