Abies is the second largest genus of family Pinaceae (after Pinus), consisting
of about 51 species, all native to the Northern Hemisphere.
There are six native taxa belonging to this genus growing in pure and mixed
stands in Turkey. Abies cilicica subsp. isaurica, Abies nordmanniana subsp.
bornmü / lleriana, Abies nordmanniana subsp. equi-trojani, Abies x olcayana
are endemic and considered as lower risk (LR) species.
To determine the genetic relationships in Turkish firs, 18 populations of
different subspecies of Abies were collected from different regions of Turkey
and non-coding trn regions of chloroplast DNA were sequenced to assess
the genetic structure of the studied species. trnL, trnF and trnV region were
examined. All the trn regions of Abies species in the world (aproximately 300
species that found in the IPNI (The International Plant Names Index) were
investigated in the database of NCBI. The available trn sequences of 23
Abies species worldwide included into the analyses. All analyses to estimate
molecular diversity parameters were carried out with the MEGA software.
The constructed phylogenetic tree with the trn sequences revealed that
Turkish firs formed a monophyletic group with almost no sequence
divergence.
v
Since sequence data for all three sectors of trn were not available from the
NCBI data base, the phylogentic analysis with the sequence data of trnL
regions were compartively analyzed in all firs. The results showed that
Turkish- European species formed a single clade, which clearly differentiated
them from the others, such as Japanese species, A. veitchii. Similarly,
according to the sequence data of trnF, Turkish fir species were grouped
together and distinctly separated from Asian-American Fir species.
The results suggest that all Turkish firs may have evolved from single
ancestral fir species, most likely from Abies nordmanniana.
| Identifer | oai:union.ndltd.org:METU/oai:etd.lib.metu.edu.tr:http://etd.lib.metu.edu.tr/upload/12613590/index.pdf |
| Date | 01 September 2011 |
| Creators | Ozdemir Degirmenci, Funda |
| Contributors | Kaya, Zeki |
| Publisher | METU |
| Source Sets | Middle East Technical Univ. |
| Language | English |
| Detected Language | English |
| Type | M.S. Thesis |
| Format | text/pdf |
| Rights | To liberate the content for public access |
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