Plant DNA Variation and Stress
The generation of quantitative DNA changes in the flax variety Stormont Cirrus in response to various stresses is described. Members of all the highly repetitive sequence families have been cloned and used as probes to characterise this variation. The variation occurs in a particular subset of the genome, irrespective of the stress applied, although the frequency with which a family of sequences varies may depend on the particular stress applied. In the case of the 5SRNA genes a specific labile set of these sequences which frequently undergoes deletion was detected. The evolutionary consequences of such an interaction between the genome and the environment are considered.
KeywordsLinum Usitatissimum Intraspecific Cross Heritable Change 5SRNA Gene Flax Variety
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- Britten, R.J., Graham, D.E. and Neufeld, B.R., 1974, Analysis of repeating sequences by reassociation kinetics, in “Methods in Enzymology,” L. Grossman, and K. Moldave, eds, Academic Press, New York, pp 363–405.Google Scholar
- Cullis, C.A., 1983b, Variable DNA sequences in flax, in: “Genetic Rearrangement,” K.F. Chater, C.A. Cullis, D.A. Hopwood, A.W.B. Johnston and H.W. Woolhouse, eds, Croon Helm, U.K. pp253–264.Google Scholar
- Cullis, C.A., and Charlton, L.M., 1981, The induction of ribosomal DNA changes in flax, Plant Sci. Letter., 20:213–217.Google Scholar
- Cullis, C.A., and Cleary, W., 1985a, DNA variation in flax tissue culture,. Theoret. and Appl. Genet., submitted.Google Scholar
- Cullis, C.A., and Cleary, W., 1985b, Rapidly modulated DNA sequences in flax, J. Molec. Biol., submitted.Google Scholar
- Flavell, R.B., 1982, Sequence amplification, deletion and rearrangement: major sources of variation during species divergence, in: “Genome Evolution.” R.B. Flavell, and G.A. Dover, eds., Academic Press, New York. pp 301–323.Google Scholar
- Goldsbrough, P.B., and Cullis, C.A., 1981, Characterisation of the genes for ribosomal RNA in flax, Nuc. Acids Res., 1301–1309.Google Scholar
- McClintock, B., 1978, Mechanisms that rapidly reorganise the genome. Stadler Genetics Symposium, 10:25–47.Google Scholar
- Rivin, C.J., and Cullis, C.A., 1983, Modulation of repetitive DNA in the maize genome, Genetics, 104:859–860.Google Scholar
- Schweizer, D., 1979, Fluorescent chromosome banding in plants: applications, mechanisms and implications for chromosome structure, in: “The Plant Genome,” D.R. Davies, and D.A. Hopwood, eds, The John Innes Charity, Norwich, pp 61–72.Google Scholar