• Publications
  • Influence
Actin and tubulin cytoskeletons in germlings of the oomycete fungus Phytophthora infestans.
TLDR
The architecture of the actin and tubulin cytoskeletons in germ tubes of P. infestans bolsters the hypothesis that they maintain the spatial organization of the hyphal protoplast and support or accomplish intrahyphal movements. Expand
Architecture of the microtubule component of mitotic spindles from Dictyostelium discoideum.
TLDR
It is proposed that MT interdigitation defines a region where MTs bind a factor that will associate only with antiparallel MTs, and this factor biases the MT assembly equilibrium toward polymer. Expand
Mitosis in the cellular slime mold Polysphondylium violaceum
  • U. Roos
  • Biology, Medicine
  • The Journal of cell biology
  • 1 February 1975
TLDR
Spindle elongation and poleward movement of chromosomes are discussed in relation to hypotheses of the mechanism of mitosis. Expand
Quantitative Structure Analysis of the Mitotic Spindle
During nuclear division in higher eukaryotic cells, four major movements occur: orientation and congression of the chromosomes during prometaphase, poleward movement of the chromosomes duringExpand
Movements of intracellular particles in undifferentiated amebae of dictyostelium discoideum
TLDR
Several lines of evidence pointed to a role of microtubules (MTs) in saltatory particle movements, which may be an eye-catching feature of intracellular transport functioning in endo- and exocytosis in the shuffling of vesicles containing factors involved in ameboid movement, and in the transduction of external signals to the cell center. Expand
Fine structure of an organelle associated with the nucleus and cytoplasmic microtubules in the cellular slime mould Polysphondylium violaceum.
  • U. Roos
  • Biology, Medicine
  • Journal of cell science
  • 1 July 1975
TLDR
It is suggested that cytoplasmic microtubules do not determine cell shape, but they probably cause the tapering deformation of the nucleus, and may represent a storage form of subunits for utilization during the formation of the mitotic spindle. Expand
Indirect immunofluorescence of microtubules in Dictyostelium discoideum. A study with polyclonal and monoclonal antibodies to tubulins.
TLDR
The cyclicalChanges in the MT system related to cell division resemble those observed in higher eukaryotes and probably reflect changes in the locomotory behavior of the amebae rather than changes in cell shape. Expand
Induction of multiple germ tubes in Neurospora crassa by antitubulin agents.
TLDR
The results suggest that microtubule or membrane beta-tubulin is involved in the maintenance of developmental polarity during germ tube emergence and growth of N. crassa and the benomyl-induced multipolar germination of ascomycete Aspergillus nidulans is suggested. Expand
Light and electron microscopy of rat kangaroo cells in mitosis
  • U. Roos
  • Biology, Medicine
  • Chromosoma
  • 2004
TLDR
A comparison of kinetochore structure and chromosome position in the mitotic spindle yielded clues regarding initial orientation and congression and revealed that they are trilaminar, roughly circular plaques of 4000–6000 Å diameter. Expand
Germ tube growth and the microtubule cytoskeleton in Phytophthora infestans: Effects of antagonists of hyphal growth, microtubule inhibitors, and ionophores
TLDR
It is pointed out that no simple relationship exists between an intact MT cytoskeleton and germ tube growth in P. infestans. Expand
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