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Entomophaga

, Volume 22, Issue 3, pp 271–279 | Cite as

Surface structures of three species of the genusEntomophthora

  • R. Krejzová
Article

Abstract

The surface structure of freshly discharged conidia ofEntomophthora thaxterianaHall & Bell andE. destruensWeiser & Batko is slightly undulated and that of their papillae has elevated ridges forming a reticulation. The conidia ofZoophthora aphidisBatko are of more variable shape than those ofE. thaxteriana andE. destruens, their surface is smoother and the reticulate structure of their papillae is less distinct. The surface of germinating or older conidia of all the 3 species is gradually wrinkled, furrowed, forming deep depressions or completely broken down. The surface features of germ tubes or hyphae depend on the tubes being filled with the plasma and the resultant turgor. The plasma ofZ. aphidis conidia is capable of forming large areas of membranes of various shapes which enables it to move to a rather long distance.

Keywords

Germinate Plant Pathology Surface Structure Surface Feature Germ Tube 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

Résumé

La structure de la surface des conidies projetées deEntomophthora thaxterianaHall & Bell etE. destruensWeiser & Batko est faiblement ondulée et celle de leurs papilles a des crêtes élevées formant un réticule. La forme des conidies deZoophthora aphidisBatko est plus variable que celle des conidies deE. thaxteriana etE. destruens, leur surface est plus unie et la structure réticulaire de leurs papilles est moins distincte. La surface des conidies en germination ou plus âgées des 3 espèces est successivement ridée, sillonnée, formant des dépressions profondes ou complètement écroulée. Les caractères de la surface des tubes germinatifs ou des hyphes dépendent de la teneur des tubes en plasma et de la turgescence qui en résulte. Le plasma des conidies deZ. aphidis est capable de former de grandes surfaces de membranes de formes diverses qui lui permettent de se déplacer à une assez grande distance.

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References

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Copyright information

© Le François 1977

Authors and Affiliations

  • R. Krejzová
    • 1
  1. 1.Entomologický UstavPathologie HmyzuPraha 6Czechoslovakia

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