Javascript is not activated in your browser. This website needs javascript activated to work properly.
You are here

Deletion of a lectin gene does not affect the phenotype of the nematode-trapping fungus Arthrobotrys oligospora

  • Johanna Balogh
  • Anders Tunlid
  • Stefan Rosén
Publishing year: 2003
Language: English
Pages: 128-135
Publication/Series: Fungal Genetics and Biology
Volume: 39
Issue: 2
Document type: Journal article
Publisher: Elsevier

Abstract english

A number of filamentous fungi are known to produce high levels of saline-soluble and low-molecular-mass lectins. The function of these proteins are not clear but it has been proposed that they are involved in storage of nutrients, development, recognition of other organisms, and defense reactions. A gene encoding such a lectin (AOL) was deleted in the nematode-trapping fungus Arthrobotrys oligospora by homologous recombination. The deletion mutants did not express any hemagglutinating activity or protein cross-reacting with AOL antibodies. There were no significant differences between the DeltaAOL and wild-type strains in spore (conidia) germination, saprophytic growth, and pathogenicity. Furthermore, there was no significant difference in the growth and reproduction of collembolan feeding on the various strains of A. oligospora. Thus either the previous proposed functions of AOL are not correct, or the fungus can compensate for the absence of the lectin by expressing other proteins with similar function(s) as AOL. (C) 2003 Published by Elsevier Science (USA).


  • Biological Sciences


  • Microbial Ecology
  • ISSN: 1087-1845
Anders Tunlid
E-mail: anders [dot] tunlid [at] biol [dot] lu [dot] se

Pro dean

Faculty of Science

+46 70 314 00 67


Sölvegatan 27, Lund




+46 46 222 37 57


Sölvegatan 37, Lund