Organelles maintain spindle position in plant meiosis

Nature Communications
Lynette BrownfieldClaudia Köhler

Abstract

Accurate positioning of spindles is a critical aspect of cell division as it ensures that each daughter cell contains a single nucleus. In many flowering plants, two meiotic chromosome separations occur without intervening cytokinesis, resulting in two spindles in one cell during the second division. Here we report a detailed examination of two mutants, jason (jas) and parallel spindle1 (ps1), in which disturbed spindle position during male meiosis II results in the incorporation of previously separated chromosome groups into a single cell. Our study reveals that an organelle band provides a physical barrier between the two spindles. The loss of a single protein, JAS, from this organelle band leads to its disruption and a random movement of the spindles. JAS is largely associated with vesicles in the organelle band, revealing a role for vesicles in plant meiosis and that cytoplasmic events maintain spindle position during the chromosome division.

References

Mar 21, 1977·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·H G Dickinson, J Heslop-Harrison
Nov 1, 1984·The American Journal of Anatomy·J Van Blerkom, M N Runner
Nov 1, 1996·Chromosome Research : an International Journal on the Molecular, Supramolecular and Evolutionary Aspects of Chromosome Biology·K J RossG H Jones
Mar 9, 1999·The Plant Journal : for Cell and Molecular Biology·S J Clough, A F Bent
Sep 29, 1999·Proceedings of the National Academy of Sciences of the United States of America·M YangH Ma
Nov 28, 2000·Annual Review of Genetics·S P Otto, J Whitton
May 7, 2002·Trends in Plant Science·Mansour KarimiAnn Depicker
Mar 8, 2005·Trends in Plant Science·Mansour KarimiPierre Hilson
Mar 9, 2005·Current Opinion in Plant Biology·Keith L Adams, Jonathan F Wendel
Jan 10, 2006·Developmental Cell·Pankaj DhonuksheTheodorus W J Gadella
Jul 4, 2006·The Plant Journal : for Cell and Molecular Biology·Shoji ManoMikio Nishimura
Nov 6, 2007·Cell·Sarah P Otto
Apr 5, 2008·Nature Protocols·Andrew P FrenchTony P Pridmore
Aug 6, 2008·Plant Physiology·Daniël Van DammeEugenia Russinova
Mar 25, 2009·The Plant Journal : for Cell and Molecular Biology·Niko GeldnerJoanne Chory
Sep 26, 2009·PLoS Genetics·Aleksandra ErilovaClaudia Köhler
Apr 21, 2010·Plant Signaling & Behavior·Sung Aeong OhDavid Twell
Jun 15, 2010·Protoplasma·Dorota Tchórzewska, Józef Bednara
Nov 27, 2010·Journal of Experimental Botany·Lynette Brownfield, Claudia Köhler
Jun 17, 2011·Genetika·N V Shamina, O A Shatskaia
Jun 20, 2012·The Plant Journal : for Cell and Molecular Biology·Sung Aeong OhDavid Twell
Jul 23, 2013·Nature Cell Biology·Zuzana HolubcováMelina Schuh

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Citations

Apr 3, 2016·Free Radical Biology & Medicine·Katie L LiberatoreShahryar F Kianian
May 10, 2017·Planta·Dorota Tchórzewska
Jul 26, 2017·Plant Cell Reports·Xiqing ZhangGuixia Jia
Nov 22, 2018·Frontiers in Plant Science·Claudio CapitaoKarel Riha

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