Genome size and the proportion of repeated nucleotide sequence DNA in plants View Full Text


Ontology type: schema:ScholarlyArticle     


Article Info

DATE

1974-10

AUTHORS

R. B. Flavell, M. D. Bennett, J. B. Smith, D. B. Smith

ABSTRACT

The reannealing kinetics of denatured DNA fragments from 23 species of higher plants have been studied, using hydroxylapatite chromatography to distinguish reannealed from single-stranded DNA. The 2C nuclear DNA contents of the species varied between 1.7 and 98 pg. The proportions of DNA in species with a nuclear DNA mass above 5 pg that reannealed with the kinetics of sequences present in more than 100 copies were high (69–92% with a mean of 80±2.0%). For species with less than 4 pg of DNA, the mean proportion of repeated-sequence DNA was 62±2.9%. It is concluded that most of the variation in nuclear DNA mass in higher plant chromosomes can be accounted for by variation in repeated-sequence DNA. The consequences of altering the adapted DNA content of a species by the addition of families of repeated sequences are discussed in relation to the proportion of repeated-sequence DNA. More... »

PAGES

257-269

Identifiers

URI

http://scigraph.springernature.com/pub.10.1007/bf00485947

DOI

http://dx.doi.org/10.1007/bf00485947

DIMENSIONS

https://app.dimensions.ai/details/publication/pub.1012549755

PUBMED

https://www.ncbi.nlm.nih.gov/pubmed/4441361


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