Plants were regenerated following intraspecific fusion of leaf protoplasts from two naturally occurring genotypes of Nicotiana debneyi. The two genotypes differed in the EcoRl fragmentation pattern of chloroplast DNA and in the nuclear-coded phosphoglucomutase (Pgm) isozymes. There was no conscious
Nucleotide polymorphism in chloroplast dna ofNicotiana debneyi
โ Scribed by W. R. Scowcroft
- Book ID
- 104709608
- Publisher
- Springer
- Year
- 1979
- Tongue
- English
- Weight
- 880 KB
- Volume
- 55
- Category
- Article
- ISSN
- 0040-5752
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โฆ Synopsis
EcoR1 restriction endonuclease analysis of chloroplast DNA isolated from several distinct populations of Nicotiana debneyi has revealed a naturally occurring polymorphism. The chloroplast DNA of seven of the nine populations analysed possessed an additional EcoRl site. The origin of the additional restriction endonuclease fragments was confirmed by hybridisation of [(32) P]-cRNA to fractionated EcoRl restricted chloroplast-DNA fragments adsorbed to nitrocellulose filters. Reciprocal f1 hybrids between plants carrying the variant chloroplast-DNA's confirmed maternal inheritance of chloroplast-DNA.
๐ SIMILAR VOLUMES
Chloroplast DNA polymorphisms have been detected by the conventional Southern-blotting hybridization method in four species of European oaks (Quercus petraea, Q. robur, Q. pubescens and Q. pyrenaica). Three polymorphisms, shared by at least three of these species, can be scored directly in ethidium