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Triticum aestivum cv. Alpu buğday çeşidinde ağır metal stresinin antioksidan enzim seviyeleri üzerine ekotoksikolojik etkileri

Ecotoxicological effects of heavy metal stress on antioxidant enzyme levels of Triticum aestivum cv. Alpu

Journal Name:

  • Biyolojij Çeşitlilik ve Koruma

Publication Year:

  • 2011

Key Words:

Keywords (Original Language):

Author NameUniversity of AuthorFaculty of Author
Abstract (2. Language): 
Pollution caused by heavy metals is one of the factors that reduces yield and quality and affects all aspects of cro p production negatively. Activation and induction of superoxide dismutase (SOD) and catalase (CAT) enzymes are one of the metal detoxification mechanisms in plants and it is important that combined effect of SOD and CAT enzymes are mitigating the effects of oxidative stress. In this study, ecotoxicological effects of cadmium, lead and cadmium+lead on antioxidant enzyme levels in wheat (Triticum aestivum L. cv. Alpu) were investigated. As a result of different concentrations (100, 200 and 300 LIM) applied heavy metals (cadmium, lead and cadmium + lead) has led to decreases in SOD and catalase enzyme activity. Heavy metal cadmium has the least impact on the activity of SOD and combined effect of heavy metals (cadmium + lead) was found to be more effective on the activity of catalase enzyme when compared to one by one application of cadmium and lead. In addition, effects of heavy metal depend on metal type and concentration on enzyme activities in wheat.
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Abstract (Original Language): 
Bitkisel üretimin tüm aşamalarını olumsuz etkileyen, verim ile kaliteyi düşüren faktörlerden birisi ağır metallerin sebep olduğu kirliliktir. Süperoksit dismutaz (SOD) ve katalaz (CAT) enzimlerinin uyarılması ve aktivasyonu bitkilerdeki önemli metal detoksifikasyon mekanizmalarından olup SOD ve CAT enzimlerinin kombine etkisi oksidatif stresin etkilerini hafifletmede önemlidir. Bu çalışmada, kadmiyum, kurşun ve kadmiyum+kurşunun buğdayda (Triticum aestivum L. cv. Alpu) antioksidan enzim seviyeleri üzerine ekotoksikolojik etkileri incelenmiştir. Sonuç olarak farklı konsantrasyonlarda (100, 200 ve 300 LIM) uygulanan ağır metaller (kadmiyum kurşun ve kadmiyum + kurşun) SOD ve katalaz enzim aktivitesinde azalışlara neden olmuştur. SOD enzim aktivitesi, ağır metallerin kombine etkisinin (kadmiyum + kurşun) tek tek ağır metal uygulamasına göre katalaz enzim aktivitesi üzerinde daha fazla etkili olduğu bulunmuştur. Ayrıca ağır metalin etkisi ağır metalin çeşidine ve konsantrasyonuna bağlı olarak bitkinin enzim seviyelerini değiştirmektedir.
FULL TEXT (PDF): 
PDF icon arastirmax-triticum-aestivum-cv.alpu-bugday-cesidinde-agir-metal-stresinin-antioksidan-enzim-seviyeleri-uzerine-ekotoksikolojik-etkileri.pdf
  • 3
19-24
  • Turkish

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