A high level of the nucleotide sequence conservation was found for mitochondrial nad3 gene of carrot. Three silent nucleotide substitutions differentiate nad3 open reading frames from cytoplasmic male sterile and male fertile carrots. All these differences are preserved on the RNA level. Partial and silent editing also distinguished both carrots. Three of the C to U conversions were specific to the fertile line. In the two examined carrot lines editing did not affect the mode of alteration of encoded amino acids.
A high level of the nucleotide sequence conservation of mitochondrial nad3 and rps12 genes was found in four lupin species. The only differences concern three nucleotides in the Lupinus albusrps12 gene and three nucleotides insertion in the L. mutabilis spacer. Northern blot analysis as well as RT-PCR confirmed cotranscription of the luteus genes because the transcripts detected were long enough.
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