Anadolu’da Yetişen Gundelia (Asteraceae) Taksonlarının ITS Filogenisi ve Moleküler Tarihlendirilmesi

Öz

Flora kitaplarına göre Gundelia L. monofiletik bir cins olarak bilinmektedir. Gundelia tournefortii L. cinsin tek türü olarak bilinmektedir. Çalışmamızda ITS bölgesine dayalı filogenetik analiz ve moleküler tarihleme yapmak için yeni tanımlanan türleri de kullandık. Bunlar: Gundelia aragatsi Vitek, Fayvush, Tamanyan & Gemeinholzer, Gundelia dersim Vitek, Yüce & Ergin, Gundelia munzuriensis Vitek, Yüce & Ergin, Gundelia vitekii Armağan, Gundelia komagenensis Fırat, Gundelia colemerikensis Fırat, Gundelia cilicica Fırat ve Gundelia anatolica Fırat. Adı geçen yeni türler Yürkiye’den arazi çalışmaları yaparak toplanmış ve bizim toplamalarımızın yanısıra G. tournefortii türüne ait daha önceki çalışmalarda ortaya çıkmış ITS dizileri de kullanılmıştır. Filogenetik ağaca göre, G. anatolica tüm Gundelia örneklerinden farklıdır. Daha önceki çalışmalarda toplanmış bazı G. tournefortii örnekleri G. cilicica, G. dersim ve G. colemerikensis ile birlikte kümelenmiştir. G. munzurensis G. vitekii ile grup oluşturmuştur. Gundelia komagenensis ve G. aragatsi örnekleri birbirine en yakın gruplanmışlardır. Moleküler tarihlendirmeye göre Gundelia cinsinin ayrılma zamanı 14.1 milyon yıl öncesine tarihlenmektedir.

Anahtar Kelimeler

• Asteraceae,Gundelia,ITS,moleküler tarihleme,filogeni

ITS Phylogeny and Molecular Dating of some Gundelia (Asteraceae) of Anatolia

Abstract

Gundelia L. is known to be a monotypic genus according to the flora books. Gundelia tournefortii L. was the only species of the genus Gundelia L. In our research we used the recently introduced species: Gundelia aragatsi Vitek, Fayvush, Tamanyan & Gemeinholzer, Gundelia dersim Vitek, Yüce & Ergin, Gundelia munzuriensis Vitek, Yüce & Ergin, Gundelia vitekii Armağan, Gundelia komagenensis Fırat, Gundelia colemerikensis Fırat, Gundelia cilicica Fırat and Gundelia anatolica Firat, in order to reconstruct a phylogeny inference and molecular dating by using ITS region. The mentioned species were collected from Turkey and beside our collections, the ITS sequences belonging to G. tournefortii accessions of former studies were used in our research. According to the phylogeny inference, G. anatolica was different from all Gundelia accessions. Some G. tournefortii accessions belonging to former studies grouped with G. cilicica, G. dersim and G. colemerikensis, G. munzurensis clustered with G. vitekii. Gundelia komagenensis and G. aragatsi accessions were grouped as close relatives. According to the molecular dating the distinction of the genus Gundelia from the relative genera was around 14.1 million years ago (mya).

Keywords

• Asteraceae,Gundelia,ITS,molecular dating,phylogeny

Kaynakça

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