Biochemical Genetics

, Volume 12, Issue 1, pp 59–68 | Cite as

Hyphal wall peptides and colonial morphology in Neurospora crassa

  • C. Richard Wrathall
  • E. L. Tatum


The peptides of the hyphal wall of 23 colonial strains of Neurospora crassa have been compared, both quantitatively and qualitatively, to those of three wild-type strains. We found that all colonial strains examined have a reduced quantity of peptide, ranging from 6.64% to 3.34% of the dry weight of the wall, compared to the wild-type average of 9.35%. The peptides from the walls of all colonial strains except doily eluted from DEAE-cellulose with the same pattern as those from wild-type walls. The aberrant peptides from doily walls did not bind to DEAE-cellulose, suggesting a reduction in the number of acidic residues in these peptides. Although a causal connection between colonial morphology and reduced peptide is not shown, we consider the quantity of peptide in the hyphal wall to be an important determinant in the control of normal morphology and growth.

Key words

Neurospora crassa hyphal wall peptides colonial morphology 


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Copyright information

© Plenum Publishing Corporation 1974

Authors and Affiliations

  • C. Richard Wrathall
    • 1
  • E. L. Tatum
    • 1
  1. 1.The Rockefeller UniversityNew York

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