Differentiation inside multicelled macroconidia of Fusarium culmorum during early germination

G.S. Chitarra, P. Breeuwer, F.M. Rombouts, T. Abee, J. Dijksterhuis

Research output: Contribution to journalArticleAcademicpeer-review

14 Citations (Scopus)

Abstract

Multicelled conidia are formed by many fungal species, but germination of these spores is scarcely studied. Here, the germination and the effects of antimicrobials on multicompartment macroconidia of Fusarium culmorum were investigated. Germ-tube formation was mostly from apical compartments. The intracellular pH (pHin) of the different individual cells of the macroconidia was monitored during germination. The pHin varied among different compartments and during different stages of germination. The internal pH was lowest in ungerminated cells and rose during germ-tube formation and was highest in new germ tubes. Antifungal compounds affect the pHin and differentiation of the conidia. The pHin inside the macroconidial compartments was lowered very fast in the presence of nystatin (1 and 4 ¿g/ml). At sublethal doses (0.3 ¿g/ml), the apical compartments were preferentially targeted showing lower pHin values. The reduced germination capacity of apical compartments under these conditions was compensated by an increased germination capacity of middle compartments.
Original languageEnglish
Pages (from-to)694-703
JournalFungal Genetics and Biology
Volume42
Issue number8
DOIs
Publication statusPublished - 2005

Keywords

  • rice blast fungus
  • magnaporthe-grisea
  • spore germination
  • intracellular ph
  • cytoplasmic ph
  • chlamydospores
  • growth
  • cells
  • oxysporum
  • surface

Fingerprint Dive into the research topics of 'Differentiation inside multicelled macroconidia of Fusarium culmorum during early germination'. Together they form a unique fingerprint.

  • Cite this