The phylogenetic analysis of pinus nigra arnold subspecies pallasiana varieties with respect to non-coding trn regions of chloroplast genome

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2009
Güvendiren Gülsoy, Aysun Demet
More than half of the Pinaceae is including in genus Pinus covers the large parts of vegetation of northern hemisphere. The Anatolian Black Pine is one of the subspecies of European Black Pine, growing naturally as a widespread mid elevation species of Taurus, western Anatolian and northern Anatolian Mountains of Turkey. Although it is disputed that there are 5 varieties of Anatolian black pine but three of these are well recognized. These are Pinus nigra subsp. pallasiana var. pallasiana, Pinus nigra Arnold subsp. pallasiana var. pyramidata (pyrimidal black pine) and Pinus nigra Arnold subsp. pallasiana var. seneriana. To determine the genetic relationship between Anatolian black pine and its well recognized varieties, 3 different taxa of Anatolian black pine (well recognized varieties) were sampled in the natural range of species and non-coding trn regions of chloroplast DNA (cpDNA) were sequenced to assess the genetic structure of the species. Three sectors of trn region were examined. Analysis was assessed with using MEGA version 4.0 and Arlequin 2.000 softwares. Considering genetic diversity of three Anatolian black pine taxa with respect to trn regions and parsimonic sites, the result showed that P. nigra subsp pallasiana var seneriana was more polymorphic than other two taxa. Also, the most distant taxon that show differences in trn sequences when compared to other taxa was P. nigra subp pallasiana var pyramidata. The constructed phylogenetic tree showed that individuals of P.nigra subsp pallasiana var pyramidata were grouped together. However, other two taxa showed a dispersed allocation in the tree. This result indicates that var pyramidata was the most distant taxon. According to present study, there is no clear speciation between varieties and var pallasiana. The differences between them may be a result of mutation which may have occured in the genes coding for growth and form of Anatolian black pine.

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Citation Formats
A. D. Güvendiren Gülsoy, “The phylogenetic analysis of pinus nigra arnold subspecies pallasiana varieties with respect to non-coding trn regions of chloroplast genome,” M.S. - Master of Science, Middle East Technical University, 2009.