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Molecular and General Genetics MGG

, Volume 251, Issue 4, pp 442–450 | Cite as

TheAspergillus nidulans geneschsA andchsD encode chitin synthases which have redundant functions in conidia formation

  • T. Motoyama
  • M. Fujiwara
  • N. Kojima
  • H. Horiuchi
  • A. Ohta
  • M. Takagi
Original Paper

Abstract

We previously isolated three chitin synthase genes (chsA, chsB, andchsC) fromAspergillus nidulans. In the present work, we describe the isolation and characterization of another chitin synthase gene, namedchsD, fromA. nidulans. Its deduced amino acid sequence shows 56.7% and 55.9% amino acid identity, respectively, with Cal1 ofSaccharomyces cerevisiae and Chs3 ofCandida albicans. Disruption ofchsD caused no defect in cell growth or morphology during the asexual cycle and caused no decrease in chitin content in hyphae. However, double disruption ofchsA andchsD caused a remarkable decrease in the efficiency of conidia formation, while double disruption ofchsC andchsD caused no defect. Thus it appears thatchsA andchsD serve redundant functions in conidia formation.

Key words

Chitin synthase Multigene family Cell wall Conidia Aspergillus nidulans 

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Copyright information

© Springer-Verlag 1996

Authors and Affiliations

  • T. Motoyama
    • 1
  • M. Fujiwara
    • 1
  • N. Kojima
    • 1
  • H. Horiuchi
    • 1
  • A. Ohta
    • 1
  • M. Takagi
    • 1
  1. 1.Department of BiotechnologyThe University of TokyoTokyoJapan

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