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A Link between Meiotic Prophase Progression and Crossover Control

Journal Article · · PLoS Genetics
 [1];  [2];  [3]
  1. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Life Sciences Division; DOE/OSTI
  2. Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology
  3. Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). Life Sciences Division; Univ. of California, Berkeley, CA (United States). Dept. of Molecular and Cell Biology
During meiosis, most organisms ensure that homologous chromosomes undergo at least one exchange of DNA, or crossover, to link chromosomes together and accomplish proper segregation. How each chromosome receives a minimum of one crossover is unknown. During early meiosis in Caenorhabditis elegans and many other species, chromosomes adopt a polarized organization within the nucleus, which normally disappears upon completion of homolog synapsis. Mutations that impair synapsis even between a single pair of chromosomes in C. elegans delay this nuclear reorganization. We quantified this delay by developing a classification scheme for discrete stages of meiosis. Immunofluorescence localization of RAD-51 protein revealed that delayed meiotic cells also contained persistent recombination intermediates. Through genetic analysis, we found that this cytological delay in meiotic progression requires double-strand breaks and the function of the crossover-promoting heteroduplex HIM-14 (Msh4) and MSH-5. Failure of X chromosome synapsis also resulted in impaired crossover control on autosomes, which may result from greater numbers and persistence of recombination intermediates in the delayed nuclei. We conclude that maturation of recombination events on chromosomes promotes meiotic progression, and is coupled to the regulation of crossover number and placement. Our results have broad implications for the interpretation of meiotic mutants, as we have shown that asynapsis of a single chromosome pair can exert global effects on meiotic progression and recombination frequency.
Research Organization:
Lawrence Berkeley National Lab. (LBNL), Berkeley, CA (United States). National Energy Research Scientific Computing Center (NERSC)
Sponsoring Organization:
National Institutes of Health (NIH); USDOE Office of Science (SC), Biological and Environmental Research (BER). Biological Systems Science Division; Wellcome Trust
Grant/Contract Number:
AC02-05CH11231
OSTI ID:
1627265
Journal Information:
PLoS Genetics, Journal Name: PLoS Genetics Journal Issue: 2 Vol. 2; ISSN 1553-7404
Publisher:
Public Library of ScienceCopyright Statement
Country of Publication:
United States
Language:
English

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Cited By (22)

akirinis required for diakinesis bivalent structure and synaptonemal complex disassembly at meiotic prophase I journal April 2013
Phosphorylation of the synaptonemal complex protein SYP-1 promotes meiotic chromosome segregation posted_content October 2017
Crossovers Get a Boost inBrassicaAllotriploid and Allotetraploid Hybrids journal July 2010
Polyploidization increases meiotic recombination frequency in Arabidopsis journal April 2011
ZHP-3 Acts at Crossovers to Couple Meiotic Recombination with Synaptonemal Complex Disassembly and Bivalent Formation in C. elegans journal October 2008
Leptotene/Zygotene Chromosome Movement Via the SUN/KASH Protein Bridge in Caenorhabditis elegans journal November 2010
Identification of DSB-1, a Protein Required for Initiation of Meiotic Recombination in Caenorhabditis elegans, Illuminates a Crossover Assurance Checkpoint journal August 2013
Evidence That Masking of Synapsis Imperfections Counterbalances Quality Control to Promote Efficient Meiosis journal December 2013
A compartmentalized signaling network mediates crossover control in meiosis journal March 2018
BRDT is an essential epigenetic regulator for proper chromatin organization, silencing of sex chromosomes and crossover formation in male meiosis text January 2018
Defects in meiotic recombination delay progression through pachytene in Tex19.1−/− mouse spermatocytes journal June 2018
Phosphorylation of the synaptonemal complex protein SYP-1 promotes meiotic chromosome segregation journal December 2017
The tumor suppressor BRCA1/BARD1 complex localizes to the synaptonemal complex and regulates recombination under meiotic dysfunction in Caenorhabditis elegans posted_content March 2018
Regulation of Crossover Frequency and Distribution during Meiotic Recombination journal January 2017
Recombination suppression in heterozygotes for a pericentric inversion induces the interchromosomal effect on crossovers in Arabidopsis journal October 2019
Erratum to: Polyploidization increases meiotic recombination frequency in Arabidopsis journal April 2012
Temporal Analysis of Meiotic DNA Double-Strand Break Formation and Repair in Drosophila Females journal January 2006
BRDT is an essential epigenetic regulator for proper chromatin organization, silencing of sex chromosomes and crossover formation in male meiosis journal March 2018
The tumor suppressor BRCA1-BARD1 complex localizes to the synaptonemal complex and regulates recombination under meiotic dysfunction in Caenorhabditis elegans journal November 2018
Synapsis-Defective Mutants Reveal a Correlation Between Chromosome Conformation and the Mode of Double-Strand Break Repair During Caenorhabditis elegans Meiosis journal August 2007
The Synaptonemal Complex Shapes the Crossover Landscape Through Cooperative Assembly, Crossover Promotion and Crossover Inhibition During Caenorhabditis elegans Meiosis journal June 2010
Progression of Meiosis Is Coordinated by the Level and Location of MAPK Activation Via OGR-2 in Caenorhabditis elegans journal March 2019

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