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Intrachromosomal mapping of chromatid aberrations induced by restriction endonucleases in barley

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Abstract

 The intrachromosomal distribution patterns of chromatid aberrations induced by the restriction endonucleases HpaII, MspI and HaeIII in a multireconstructed barley karyotype were analysed. All of these endonucleases, which differ with respect to their DNA recognition sequences but produce only one type of DNA damage, showed nearly the same pattern of localized chromosome breakage. The most pronounced aberration hot spots proved to be the loci of transcriptionally active and condensed, inactive, rDNA. Possible mechanisms involved in the specific distribution of induced aberrations along the distinct chromosomal regions are discussed.

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Authors and Affiliations

  1. De Montfort University, Norman Borlaug Institute of Plant Science Research, Institute of Genetic Engineering, 2232 Kostinbrod-2, Bulgaria, , , , , , BG

    K. I. Gecheff

  2. Institute of Genetics “D. Kostoff”, 1113 Sofia, Bulgaria, , , , , , BG

    V. Mirkova, A. Dimitrova & L. M. Stoilov

  3. Faculty of Biology, Sofia State University, Bulgaria, , , , , , BG

    S. Georgiev

Authors
  1. K. I. Gecheff
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  2. V. Mirkova
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  3. A. Dimitrova
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  4. S. Georgiev
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  5. L. M. Stoilov
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Received: 3 December 1996 / Accepted: 13 December 1996

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Gecheff, K., Mirkova, V., Dimitrova, A. et al. Intrachromosomal mapping of chromatid aberrations induced by restriction endonucleases in barley. Theor Appl Genet 94, 919–924 (1997). https://doi.org/10.1007/s001220050496

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  • DOI: https://doi.org/10.1007/s001220050496

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