Summary
Potato plastid DNA clones, representing onefourth of the potato plastome complexity and containing sequences of the 16SrRNA, rps16, atpA, atpE, psaA, psaB, trnK, trnV, and trnG genes, were used as hybridization probes on nuclear- and mitochondrial-enriched DNAs. Each probe hybridized to multiple nuclear restriction fragments distinct from the plastid cleavage products generated by the same endonucleases. The nuclear hybridizable fragments are highly methylated at their Hpall target sequences (C/CGG). In some instances, the transfer seemed to involve plastid regions of several kilobase pairs, as reflected by the co-integration in the nucleus of restriction sites that are distant in the plastome. Three clones hybridized additionally to distinct mitochondrial fragments. These results indicate that extensive DNA transfers did occur between plastids and other organelles in potato.
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Communicated by R. Hagemann
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du Jardin, P. Homologies to plastid DNA in the nuclear and mitochondrial genomes of potato. Theoret. Appl. Genetics 79, 807–812 (1990). https://doi.org/10.1007/BF00224249
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DOI: https://doi.org/10.1007/BF00224249