Çeşit Tülübaş [Psephellus aucherianus (DC.) Boiss.] Tür Kompleksi Kapsamındaki Üç Türe Ait Popülasyonların matK Geni Bakımından Karşılaştırmalı Analizi

Öz

Psephellus (Tülübaş) cinsi içerisinde Psephellus aucherianus kompleksinde yer alan Psephellus sintenisii, Psephellus yusufeliensis ve P. aucherianus’un genetik varyasyon seviyesini ve taksonlarının sınırlarını belirlemek için matK bölgeleri (kloroplast DNA) çoğaltılmış ve dizilenmiştir. Elde edilen verilere göre P. aucherianus türüne ait olan Eriç popülasyonunun evrimsel açıdan atasal bir soyu temsil ettiği ve zamanla her türün popülasyonlarının kendine özgün haplotip çeşitliliğine sahip olduğu belirlenmiştir. Bu kompleks içerisinde yer alan altı popülasyonda toplam 14 haplotip tespit edilmiş ve bu haplotiplerden üçü P. sintenisii türüne özgü iken, üçü P. yusueliensis türüne özgün görülmüştür. Geri kalan sekiz haplotip P. aucherianus türü ve popülasyonlarına ait olup bunlardan birisi Bağıştaş ve Eriç (Erzincan) popülasyonları arasında paylaşılmaktadır. Böylece bu iki popülasyonun genetik açıdan diğerlerine kıyasla çok daha yakın ilişkili olduğu ortaya çıkmaktadır. Dahası, belirlenen haplotiplere göre hesaplanan, genetik varyasyon ve farklılaşma seviyelerinin kendi aralarında oldukça değişken olduğu belirlenmiş ve uygun koruma stratejilerinin geliştirilmesi konusunda bize bilgi vermiştir. Sonuç olarak, genetik çeşitliliği oldukça düşük olan P. sintenisii türüne korumada öncelik verilmesi ve korunması gerekmektedir. Ayrıca diğer iki türün genetik varyasyon seviyeleri ve allel çeşitliliği göz önüne alındığında belirlenen ılımlı değerler ilk tür kadar olmasa da risk altında olduklarını göstermektedir.

Anahtar Kelimeler

• cpDNA haplotipi
• endemik
• genetik çeşitlilik
• genetik farklılaşma
• Türkiye
• Psephellus aucherianus

Comparative Analysis of the matK Gene in Populations of Three Species within the Variety of Psephellus aucherianus (DC.) Boiss. (Çeşit Tülübaş) Species Complex

Öz

Comparative Analysis of Populations of Three Species within the Psephellus aucherianus species somplex in terms of matK to determine the level of genetic variation and the boundaries of the taxa of Psephellus sintenisii, Psephellus yusufeliensis, and P. aucherianus, which are part of the Psephellus aucherianus complex within the genus Psephellus, a partial region of the matK regions (chloroplast DNA) were amplified and sequenced. According to the data obtained, it was determined that the population Eriç, belonging to the P. aucherianus, represents an ancestral lineage from an evolutionary perspective, and that population of each species has its own unique haplotype diversity over time. A total of 14 haplotypes were identified in the six populations within this complex. Three of these haplotypes were specific to the P. sintenisii, while three were specific to the P. yusufeliensis. The remaining eight haplotypes belonging to the P. aucherianus and its populations, and one of them is shared between the Bağıştaş and Eriç (Erzincan) populations. Thus, it is revealed that these two populations are genetically much more closely related compared to the others. Furthermore, the levels of genetic variation and differentiation, calculated according to the identified haplotypes, were found to be quite variable among themselves, providing us with information for developing appropriate conservation strategies. Consequently, priority should be given to the conservation of P. sintenisii, a species with relatively low genetic diversity. In addition, considering the levels of genetic variation and allelic diversity of the other two species, the moderate values determined indicate that they are also at risk, although not to the same extent as the first species.

Anahtar Kelimeler

• Keywords: cpDNA haplotype
• endemic
• genetic differentiation
• genetic diversity
• Türkiye
• Psephellus aucherianus

Kaynakça

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