, Volume 5, Issue 2, pp 85–93

Uninucleate giant cell induced in soybean by the nematodeRotylenchulus Macrodoratus

  • E. Cohn
  • M. Mordechai

DOI: 10.1007/BF02981146

Cite this article as:
Cohn, E. & Mordechai, M. Phytoparasitica (1977) 5: 85. doi:10.1007/BF02981146


A giant cell induced byRotylenchulus macrodoratus in soybean roots is described from light and electron microscope observations. The cell was usually initiated in the pericycle or endodermis tissues and expanded into the stele. Cell expansion was associated with increased cytoplasmic density and elimination of the central vacuole, cell organelle proliferation, extreme nuclear and nucleolar hypertrophy and nuclear lobing, and uneven wall thickening with irregular lignified wall ingrowths in some sites. In most of these characters, the giant cell is not unlike similar structures formed by heteroderid nematodes, but the uninucleate condition of theR. macrodoratus-induced giant cell is a feature which has not previously been described in host cells associated with plant parasitic nematodes. This giant cell is evidently formed from a single cell.

Key Words

Rotylenchulus macrodoratus nematode parasitism soybean giant cell 

Copyright information

© Springer Science + Business Media B.V. 1977

Authors and Affiliations

  • E. Cohn
  • M. Mordechai
    • 1
  1. 1.Div. of Nematology, AROThe Volcani CenterBet Dagan

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