Determintaion of genomic DNA quantity and purity of different geophiyte genus

Abstract

Ecology of our country is very convenient in terms of Geophytes. World geophytes (bulbs, tubers, tuberous root, rhizome plants and so on) are an important part in Flora of Turkey. Geophytes grown in Turkey seventy–eight belonging to the genus containing about 1,027 taxa (species, subspecies, varieties, forms) and approximately 40% of them are endemic. A large number of these species within the Yalova Atatürk Central Horticultural Research Institute are under protection. It is required to isolate DNA high purity and enough quantity to successfully carry out the study of molecular biology. Also considering the possibility of extinction of endemic geophyte species increased the importance of this work. In this study, different Geophyte species collected from Turkey ecology DNA isolated from fresh leaves. DNA isolation and cold storage of the total population was 2,517. The results showed that the modified protocol almost successfully produced a sufficient amount of DNA with high quality. It was obtained high purity and sufficient amounts of DNA from Delphinium, Erodium, Cyclamen, Fritillaria, Allium, Crocus, Primula and Anemone. However sufficient purity and quantity of DNA could not be obtained from most of the Asphodelus, Oxalis ve Asphodeline species. 65% of the isolated DNA results were successful but 35 % of the total samples were obtained poor quality DNA. The average amount of samples in a high–quality DNA isolation from 83 ng/μl, and the purity value was 1.89. In the light of these results, Even if studied excessive number of species, different leaf types and their contents although the obtained results can be said to be successful. In this study, future identification, genetic mapping, molecular research all kinds of similarities to the relationship, the source and origin of the genetic material to be protected, and storage of certain realized.

Keywords

• DNA isolation,agarose gel,geophytes,spectrophotometer

Farklı geofit cinslerinin genomik DNA miktar ve saflıklarının belirlenmesi

Öz

Ülkemiz geofitler açısından oldukça elverişli bir ekolojiye sahiptir. Dünya geofitlerinin (soğanlı, yumrulu, yumru köklü, rizomlu ve benzeri bitkiler) önemli bir kısmını barındıran Türkiye florasında geofitlerin 78 cinsine ait yaklaşık 1027 taksonu (tür, alt tür, varyete, form) yetişmekte, olup bunların yaklaşık %40’ı endemiktir. Bu türlerin büyük bir kısmı Yalova Atatürk Bahçe Kültürleri Merkez Araştırma Enstitüsü bünyesinde koruma altına alınmışlardır. Bu ekolojide moleküler biyoloji çalışmalarını başarıyla yürütebilmek için mutlaka yeterli ve yüksek saflıkta DNA izole etmek gerekmektedir. Geofitlerin endemik türlerinin yok olma ihtimalleri de düşünüldüğünde bu çalışmaların önemi daha da artmaktadır. Bu çalışmada Türkiye ekolojisinden toplanan farklı geofit cinslerine ait taze yapraklardan toplam 2517 adet DNA izolasyonu gerçekleştirilmiştir. Bu izole edilen DNA’ların saflık ve miktar tayinleri yapılarak birbirleri ile karşılaştırmaları yapılmıştır. Çalışmada en fazla Allium, Crocus, Ornithagalum, Muscari, Ophrys, Geranium, Cyclamen, Scilla, Anemone, Gagea cinslerine mensup türlerle çalışılmıştır. Bunların dışında çalışılan cinslerle birlikte toplam 26 cinsle çalışma yapılmıştır. Çalışılan cinsler içerisinde elde edilen sonuçlar topluca değerlendirildiğinde DNA izolasyonunun miktar ve saflık açısından en başarılı yapıldığı cinsler Delphinium, Erodium, Cyclamen, Fritillaria, Allium, Crocus, Primula ve Anemone olurken en sorunlu olan cinsler ise Asphodelus, Oxalis ve Asphodeline olmuştur. Çalışılan 2517 örneğin %65’lik kısmında DNA izolasyonu sorunsuz iken %35’lik kısmında ise düşük kalitede DNA elde edilmiştir. DNA izolasyonu sorunsuz olan örneklerin ortalama DNA miktarı 83 ng/μl ve saflık değeri 1.89 olmuştur. Elde edilen sonuçlar ışığında; çalışılan cins sayısının fazlalığı, yaprak tip ve içeriklerinin farklılığına rağmen iyi sonuçlar elde edilmiştir. Bu çalışma ile ileride yapılacak tanımlama, genetik haritalama, benzerlik ilişkisi gibi moleküler araştırmalar için kaynağı ve orijini belli genetik materyalin koruma altına alınması ve depolaması gerçekleştirilmiştir.

Anahtar Kelimeler

• DNA izolasyonu,agaroz jel,geofitler,spektrofotometre

Kaynakça

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