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Berchowitz LE, et al.  (2009) A positive but complex association between meiotic double-strand break hotspots and open chromatin in Saccharomyces cerevisiae. Genome Res 19(12):2245-57

Abstract: During meiosis, chromatin undergoes extensive changes to facilitate recombination, homolog pairing and chromosome segregation. To investigate the relationship between chromatin organization and meiotic processes, we used Formaldehyde-Assisted Isolation of Regulatory Elements (FAIRE) to map open chromatin during the transition from mitosis to meiosis in the budding yeast Saccharomyces cerevisiae. We found that meiosis-induced opening of chromatin is associated with meiotic DSB hotpots. The positive association between open chromatin and DSB hotspots is most prominent 3 hours into meiosis when the early meiotic genes DMC1 and HOP1 exhibit maximum transcription, and the early recombination genes SPO11 and RAD51 are strongly up-regulated. While the degree of chromatin openness is positively associated with the occurrence of recombination hotspots, many hotspots occur outside of open chromatin. Of particular interest, many DSB hotspots that fell outside of meiotic open chromatin nonetheless occurred in chromatin that had recently been open during mitotic growth. Finally, we find evidence for meiosis-specific opening of chromatin at the regions adjacent to boundaries of subtelomeric sequences, which exhibit specific crossover control patterns hypothesized to be regulated by chromatin.

Status: Published Type: Journal Article PubMed ID: 19801530

Topics addressed in this paper

Number of different genes curated to this paper: 13

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Topics Topics not linked to Genes Genes linked to topics (#1 - 10 )
CLB1 CLB6 DMC1 HIS4 HOP1 IME1 IME2 NDT80 RAD51 SMK1
Additional Literature blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball blue ball
Cell Growth and Metabolism yg ball
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Topics Genes linked to topics (#11 - 13 )
SPO11 SPS1 SPS2
Additional Literature blue ball blue ball blue ball
Regulation of blue ball blue ball blue ball
Transcription blue ball blue ball blue ball

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