A comparative sequence analysis of the LEA (Late Embryogenesis Abundant (LEA)-like gene) intron fragment was performed in Pinus sibirica and P. pumila differing in geographic origin. It was demonstrated that in P. sibirica this fragment was represented by two types of PCR products, 224 and 202 bp in size. Similarly, in accessions of P. pumila, two PCR products of 224 and 159 bp in size were identified. Comparison of 224-bp fragments in P. sibirica and P. pumila showed that they differed in single nucleotide substitutions. Analysis of the intron fragment in a plant, which was characterized as an interspecific hybrid based on morphological characters, showed that it had fragments of 224 and 159 bp in size. The sequence of 224-bp fragment was similar to that of the corresponding fragment in P. sibirica. The structure of the short fragment was the same as the structure of the corresponding fragment in P. pumila. The data obtained are discussed in terms of the use of the sequences examined for species taxonomic classification and for an analysis of species hybridization.
Russian Journal of Genetics – Springer Journals
Published: Mar 4, 2014
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