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Nuclear genetic activity in B-chromosome rye, in terms of the quantitative interrelationships between nuclear protein, nuclear RNA and histone

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Abstract

The nuclear basis of B-chromosome genetic activity in rye has been investigated using quantitative cytochemical techniques on isolated root tip nuclei. Nuclear DNA amount was found to be directly proportional to B-chromosome number. Relative amounts of total nuclear protein and nuclear RNA however, decreased with increasing numbers of B's but not in a strictly linear fashion. The values were disproportionately low for odd numbered B-classes of plants. Histone protein was found to increase as the number of B's went up, and in this case the values were disproportionately high for odd numbered B-classes. A negative correlation was found between histone and total nuclear protein and histone and nuclear RNA amounts.

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Authors and Affiliations

  1. Sub-Department of Genetics, Queen's University, Belfast

    David Kirk & R. Neil Jones

  2. Department of Agricultural Botany, University College of Wales, Aberystwyth, Wales UK

    David Kirk & R. Neil Jones

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  1. David Kirk
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  2. R. Neil Jones
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Kirk, D., Jones, R.N. Nuclear genetic activity in B-chromosome rye, in terms of the quantitative interrelationships between nuclear protein, nuclear RNA and histone. Chromosoma 31, 241–254 (1970). https://doi.org/10.1007/BF00285151

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  • DOI: https://doi.org/10.1007/BF00285151

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