Mendelian inheritance of streptomycin resistance in Nicotiana plumbaginifolia

In a previous study two haploid streptomycin-resistant clones of Nicotiana plumbaginifolia were isolated. The chromosome number of one of these clones has now been doubled through leaf-midvein culture and the resultant diploids were characterized genetically. Our results show that streptomycin resis...

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Bibliographic Details
Published in:Plant cell reports 1991-10, Vol.10 (8), p.388-391
Main Authors: Kao, Y Y, Hung, C Y, To, K Y, Chen, C C
Format: Article
Language:English
Subjects:
Biological and medical sciences
Classical genetics, quantitative genetics, hybrids
Fundamental and applied biological sciences. Psychology
Genetics of eukaryotes. Biological and molecular evolution
Pteridophyta, spermatophyta
Vegetals
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Summary:In a previous study two haploid streptomycin-resistant clones of Nicotiana plumbaginifolia were isolated. The chromosome number of one of these clones has now been doubled through leaf-midvein culture and the resultant diploids were characterized genetically. Our results show that streptomycin resistance in this clone is conditioned by a recessive nuclear gene. Haploid protoplasts of this streptomycin-resistant mutant were selected for chlorate resistance. All clones obtained from the selection were deficient in nitrate reductase activity in addition to resistance to streptomycin. Genetic analysis of progeny of one of these clones revealed that the genes for streptomycin resistance and for the apoenzyme of nitrate reductase are unlinked.
ISSN:0721-7714
1432-203X
DOI:10.1007/BF00232607