Properties of the circular plasmid-like DNA, B4, from mitochondria of cytoplasmic male-sterile rice
โ Scribed by Shikanai, Toshiharu (author);Yamada, Yasuyuki (author)
- Publisher
- Springer-Verlag
- Year
- 1988
- Tongue
- English
- Weight
- 262 KB
- Volume
- 13
- Category
- Article
- ISSN
- 0172-8083
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โฆ Synopsis
The plasmid-like DNA, B4, consisting of 969 base pairs (bp), was isolated from mitochondria of the cytoplasmic male-sterile rice, A-5 8 CMS. Molecular clones containing the complete B4 sequence were constructed and used in Southern hybridization to probe mitochondrial and nuclear genomes. No evidence was found for the existence of integrated copies of B4 in the main mitochondrial genomes of either the male-sterile or fertile rice. Sequences homologous to B4, however, were found in the rice nuclear genome. The complete B4 nucleotide sequence was determined, and a sequence homologous to B4 was found in the 1.9 kbp plasmid-like DNA of maize.
๐ SIMILAR VOLUMES
Nuclear sequences homologous to the plasmid-like DNA, B4, were analyzed in the Japonica rice variety, Fujiminori. Homologous sequences existed at several positions in the nuclear genome, but each contained only a portion of the B4 sequence. It was impossible to reconstruct the entire sequence of B4