Altitude Triggers Some Biochemical Adaptations of Polygonum cognatum Meissn. Plants

Yıl 2018, Cilt: 39 Sayı: 3, 621 - 627, 30.09.2018

Oksal Macar Tuğçe Kalefetoğlu Macar

https://doi.org/10.17776/csj.375050

Cited By: 4

Öz

Madimak is a local name of Polygonum cognatum which is known as a nutrient- and phenolic-rich
edible plant in Turkish traditional cuisine. Knotweed (madimak) is usually
found in both agricultural and non-agricultural areas at different altitudes
from 720 to 3000 meters. This study aimed to investigate some biochemical
effects of altitude in knotweed plants. Knotweed leaf samples collected from
two different elevations (1656 and 1170 meters) of mountainous regions of
Şebinkarahisar (Giresun, Turkey) at optimum vegetation stage. The total
chlorophyll and carotenoid levels were determined in fresh leaves while the
total flavonoid amount, proline and the total soluble sugar contents in dried
leaf samples spectrophotometrically. The proline and the total flavonoid
contents were more abundant whereas the amounts of soluble sugars, the total
chlorophyll and carotenoids decreased at higher altitude plants. Altitudinal
gradient affects the important parameters in the biochemistry of knotweed.  Especially, owing to the flavonoid-rich
content, higher located knotweed could be defined as a functional food.

Anahtar Kelimeler

Altitude, Flavonoid, Polygonum cognatum, Photosynthetic pigment, Proline, Soluble sugar

İrtifa Polygonum cognatum Meissn. Bitkilerindeki Bazı Biyokimyasal Değişiklikleri Tetiklemektedir

Öz

Geleneksel Türk mutfağında besin maddesi ve
fenolik madde bakımından zengin bir bitki olarak bilinen Polygonum cognatum’un yerel ismi madımaktır. Madımak genellikle hem
tarımsal hem de tarımsal olmayan alanlarda 720’den 3000 metreye kadar değişen
yüksekliklerde bulunur. Bu çalışma irtifanın madımak bitkileri üzerindeki bazı
biyokimyasal etkilerini araştırmayı amaçlamıştır. Madımak yaprak örnekleri
optimum vejetasyon döneminde Şebinkarahisar’ın (Giresun, Türkiye) dağlık
bölgelerindeki 2 farklı irtifadan (1656 ve 1170 metre) toplanmıştır. Toplam
klorofil ve karotenoid seviyeleri taze yapraklarda; toplam flavonoid miktarı,
prolin ve toplam çözünebilir şeker içerikleri ise kuru yaprak örneklerinde
spektrofotometrik olarak analiz edilmiştir. Yüksek irtifa bitkilerindeki prolin
ve toplam flavonoid içerikleri daha fazla iken; çözülebilir şeker, toplam
klorofil ve karotenoidler azalmıştır. İrtifa değişimi madımağın biyokimyasında
önemli parametreleri etkilemektedir. Özellikle, flavonoid bakımından zengin
içeriği sayesinde, yüksek irtifada bulunan madımak bir fonksiyonel gıda olarak
tanımlanabilir.

Anahtar Kelimeler

Çözünebilir şeker, Flavonoid, Fotosentetik pigment, İrtifa, Polygonum cognatum, Prolin

Kaynakça

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