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Size distributions of circular molecules in plant mitochondrial DNAs

✍ Scribed by Julia Bailey-Serres; Philip Leroy; Suzan S. Jones; Jill A. Wahleithner; David R. Wolstenholme

Publisher
Springer-Verlag
Year
1987
Tongue
English
Weight
527 KB
Volume
12
Category
Article
ISSN
0172-8083

No coin nor oath required. For personal study only.

✦ Synopsis

Some physicochemical properties of the mitochondrial DNAs (mtDNA) from plants of flax, broad bean and mung bean, and from tissue culture cells of jimson weed, soybean, petunia and tobacco were determined. Circular molecules were observed in electron microscope preparations of each mtDNA. In soybean, petunia, broad bean and mung bean mtDNAs, the circular molecules had a continuous distribution of lengths (ranges between 1 to 36 kb, and 1 to 126 kb), heavily skewed toward smaller molecules. Eighty-six percent of the flax circular molecules were from 27 to 54 kb in size, and 78% of the jimson weed circular molecules were from 4 to 15 kb. Repllcative forms of 1.2-1.6 kb circular molecules were observed in electron microscope preparations of broad bean mtDNA.

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