Summary
Mitochondrial DNA (mtDNA) was studied in the leaves of Nicotiana tabacum+Nicotiana knightiana somatic hybrids previously described. Restriction patterns generated by the SalI and BamHI restriction endonucleases were different from both parents in the eight hybrids, and made up of parental and non-parental fragments. Rearrangements in the mtDNAs have been confirmed by DNA-DNA hybridization using, as a probe, labelled 2/12 plasmid DNA which contains the E. coli 16S and 23S rRNA genes. Novel patterns can be explained by new combinations of unaltered parental mtDNA molecules, and by genetic recombination.
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Arrand JR, Myers PA, Roberts RS (1978) A new restriction endonuclease from Streptomyces albus G. J Mol Biol 118:127–135
Aviv D, Fluhr R, Edelman M, Galun E (1980) Progeny analysis of the interspecific somatic hybrids: Nicotiana tabacum (CMS) + Nicotiana sylvestris with respect to nuclear and chlorplast markers. Theor Appl Genet 56:145–150
Aviv D, Galun E (1980) Restoration of fertility in cytoplasmic male sterile (CMS) Nicotiana sylvestris by fusion with X-irradiated N. tabacum protoplasts. Theor Appl Genet 58:121–127
Belliard G, Vedel F, Pelletier G (1979) Mitochondrial recombination in cytoplasmic hybrids of Nicotiana tabacum by protoplast fusion. Nature 281:401–403
Chen K, Wildman SG, Smith HH (1977) Chloroplast DNA distribution in parasexual hybrids as shown by polypeptide composition of fraction I protein. Proc Natl Acad Sci USA 74:5109–5112
Gengenbach BG, Connely JA, Pring DR, Conde MF (1981) Mitochondrial DNA variation in maize plants regenerated during tissue culture selection. Theor Appl Genet 59:161–167
Gillham NW (1978) Organelle heredity. Raven Press, New York
Gleba YY, Butenko RH, Sytnik KM (1975) Protoplast fusion and parasexual hybridization in Nicotiana tabacum (in Russian) Dokl Acad Nauk USSR 221:1196–1198
Jeffreys SAJ, Flavell RA (1977) A physical map of the DNA regions flanking the rabbit globin gene. Cell 12:429–439
Kiss A, Sain B, Kiss I, Boros I, Udvardy A, Venetianer P (1978) Cloning of an E. coli ribosomal RNA gene and its promoter region from λ rifd 18. Gene 4:137–152
Koncz Cs, Sain B (1980) Homology between rRNA of E. coli and mitochondrial DNA of maize. FEBS Lett 109:141–144
Leaver J (1980) Mitochondrial genes and male sterility in plants. TIBS 58:248–252
Levings CS, Kim BD, Pring DR, Conde MR, Mans RJ, Laughnan JR, Gabay-Laughnan SJ (1980) Cytoplasmic reversion of CmS-S in maize: Associations with a transpositional event. Science 209:1021–1023
Melchers G, Scaristán MD, Holder AA (1978) Somatic hybrid plants of potato and tomato regenerated from fused protoplast. Carlsberg Res Comm 43:203–218
Menczel L, Nagy F, Kiss Zs, Maliga P (1981) Streptomycin resistant and sensitive somatic hybrids of Nicotiana tabacum + Nicotiana knightiana: Correlation of resistance to N. tabacum plasmids. Theor Appl Genet 59:191–195
Quetier F, Vedel F (1977) Heterogeneous population of mitochondrial DNA molecules in higher plants. Nature 268:365–368
Sidorov VA, Menczel L, Nagy F, Maliga P (1981) Chloroplast transfer in Nicotiana based on metabolic complementation between irradiated and iodoacetate treated protoplasts. Planta 152:341–345
Southern EM (1975) Detection of specific sequences among DNA fragments separated by gel electrophoresis. J Mol Biol 98:503–517
Sparks RB, Dale RMK (1980) Characterization on H3-labelled supercoiled mitochondrial DNA from tobacco suspension culture cells. Mol Gen Genet 180:351–355
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Communicated by G. Melchers
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Nagy, F., Török, I. & Maliga, P. Extensive rearrangements in the mitochondrial DNA in somatic hybrids of Nicotiana tabacum and Nicotiana knightiana . Molec. Gen. Genet. 183, 437–439 (1981). https://doi.org/10.1007/BF00268762
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DOI: https://doi.org/10.1007/BF00268762