Methylation of the S f locus in almond is associated with S-RNase loss of function

Methylation of the S f locus in almond is associated with S-RNase loss of function Self-compatibility in almond (Prunus dulcis) is attributed to the presence of the S f haplotype, allelic to and dominant over the series of S-alleles controlling self-incompatibility. Some forms of the S f haplotype, however, are phenotypically self-incompatible even though their nucleotide sequences are identical. DNA from leaves and styles from genetically diverse almond samples was cloned and sequenced and then analyzed for changes affecting S f -RNase variants. Epigenetic changes in several cytosine residues were detected in a fragment of 4,700 bp of the 5′ upstream region of all self-compatible samples of the S f -RNases, differentiating them from all self-incompatible samples of S f -RNases analyzed. This is the first report of DNA methylation in a Rosaceae species and appears to be strongly associated with inactivation of the S f allele. Results facilitate an understanding of the evolution of self-compatibility/self-incompatibility in almond and other Prunus species, and suggest novel approaches for future crop improvement. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Methylation of the S f locus in almond is associated with S-RNase loss of function

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Publisher
Springer Netherlands
Copyright
Copyright © 2014 by Springer Science+Business Media Dordrecht
Subject
Life Sciences; Plant Sciences; Biochemistry, general; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1007/s11103-014-0258-x
Publisher site
See Article on Publisher Site

References

  • Differential pollen tube growth in inbred self-compatible almond genotypes
    Alonso, JM; Socias i Company, R
  • DNA Methylation and epigenetics
    Bender, J
  • Correlation of ribonuclease zymograms and incompatibility genotypes in almond
    Bošković, R; Tobutt, KR; Batlle, I; Duval, H

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