Maximal polar growth potential depends on the polarisome component AgSpa2 in the filamentous fungus Ashbya gossypii.

ABSTRACT: We used actin staining and videomicroscopy to analyze the development from a spore to a young mycelium in the filamentous ascomycete Ashbya gossypii. The development starts with an initial isotropic growth phase followed by the emergence of germ tubes. The initial tip growth speed of 6-10 microm/h increases during early stages of development. This increase is transiently interrupted in response to the establishment of lateral branches or septa. The hyphal tip growth speed finally reaches a maximum of up to 200 micro/h, and the tips of these mature hyphae have the ability to split into two equally fast-growing hyphae. A search for A. gossypii homologs of polarisome components of the yeast Saccharomyces cerevisiae revealed a remarkable size difference between Spa2p of both organisms, with Ag

SUBMITTER: Knechtle P 

PROVIDER: S-EPMC207006 | biostudies-literature | 2003 Oct

REPOSITORIES: biostudies-literature