Journal
CELL BIOLOGY INTERNATIONAL
Volume 24, Issue 10, Pages 729-736Publisher
ACADEMIC PRESS LTD
DOI: 10.1006/cbir.2000.0533
Keywords
divergent spindle; radial spindle; meiosis; cytoskeleton; meiotic mutation; microtubules
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The morphological phenotype of the maize meiotic mutant dv (divergent spindle) has been further analysed by visualization of the division spindle and examination of its fine structure in mother cells of pollen. Previous research showed that dv blocks convergence of spindle fibres at the poles. New observations reveal abnormalities caused by this mutation, with dv showing disturbances in nuclear envelope breakdown during vesiculation, preventing the spindle fibres from adopting a bipolar orientation (with convergence on the poles). The anomalies result in radial spindles which are similar to monoastral spindles in animal cells. (C) 2000 Academic Press.
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