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Table 2 Relationship between genomic organization and DNA methylation of 5 S genes in the studied species

From: Expression of 5 S rRNA genes linked to 35 S rDNA in plants, their epigenetic modification and regulatory element divergence

Species 1Organization Number of 5 S loci 1Position on chromosomes 2mC average mC range
Artemisia absinthium LS 2 (sub-)terminal 46% 34-62%
Tagetes patula L 7 (sub-)terminal 33% 11-44%
Elachanthemum intricatum SL n.d. n. d. 39% 31-45%
Helichrysum bracteatum L 1 (sub-)terminal 34% 16-43%
Helianthus annuus S 5 pericentromeric 63% 30-96%
Arabidopsis thaliana S 3 pericentromeric 379% 336-95%
  1. 1 The genomic organization and chromosomal position of 5 S rDNA is taken from [1215, 38] and from the Plant rDNA database [39].
  2. 2This work.
  3. 3 Methylation levels of coding region were determined by bisulfite sequencing. Data for Arabidopsis genes are from [40]; slightly lower values were reported in [41].