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  • Aspergillus giganteus  (1)
  • Extension Zone  (1)
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  • 1
    Electronic Resource
    Electronic Resource
    Hyphal tips of wild-type and spreading colonial mutants ofNeurospora crassa (1974)
    Springer
    Archives of microbiology 99 (1974), S. 353-368 
    Details
    ISSN: 1432-072X
    Keywords: Neurospora crassa ; Growth ; Extension Zone ; Vesicles ; Tips/Hyphae ; Spitzenkörper
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Abstract The ultrastructure of the hyphal tips of wild type and spreading colonial mutants (spco) ofNeurospora crassa was studied. The results suggest that the observed concentration of vesicles in the hyphal tips of wild type, cot 3, spco 1 and spco 12 is a consequence of the fact that in each strain the number of vesiclesper unit length of the long axis the hypha remains approximately constant. Spco 9 differed from the other strains in that a proportionally longer region of its hyphal tips contained a high concentration of vesicles. There was a direct relationship between the length of the tapered region of the hyphal tips of the various strains and their extension rates; the tapered region of a tip probably represents the extension zone of the hypha and varied in length from about 2 μm (spco 12) to about 33 μm (wild-type).
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00696249
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Hyphal tip ultrastructure ofAspergillus nidulans andAspergillus giganteus and possible implications of woronin bodies close to the hyphal apex of the latter species (1982)
    Springer
    Protoplasma 113 (1982), S. 209-213 
    Details
    ISSN: 1615-6102
    Keywords: Aspergillus nidulans ; Aspergillus giganteus ; Hyphal apex ; Ultrastructure ; Woronin body
    Source: Springer Online Journal Archives 1860-2000
    Topics: Biology
    Notes: Summary The hyphal tip ultrastructure ofAspergillus nidulans andAspergillus giganteus indicates that their apical organization is very similar to that found in other filamentous fungi. Both species have an area immediately behind the hyphal apex free of all large organelles and containing a high concentration of vesicles. InA. giganteus only one size class of vesicle is clearly evident, with a mean diameter of 72 nm. InA. nidulans two size classes of vesicle were found, with mean diameters of 75 nm and 31 nm. A Spitzenkörper is evident inA. nidulans as an area very close to the tip containing only the smaller vesicles. InA. giganteus one or more apparently mature Woronin bodies were found within the first 1 μm of some hyphal apices. The possible significance of their presence is discussed.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF01280909
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    Paper (German National Licenses)
    Fulltext
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