In the current study, tomato Lycopersicum esculentum L. plants were exposed to various concentrations of Mn2+ 80, 160, 320, 640 and 1280 μM cation. In the first part, in order to obtain evidence that plants were in stress, following the Mn2+ treatments, lipid peroxidation were determined. In the second part, to gain an idea about regulation of the CAT gene product, enzyme activities were also recorded in Mn2+ treated tomato plants. The maximum lipid peroxidation level was determined in plants which were exposed to 1280 μM concentration of Mn2+ contamination. Changes in lipid peroxidation and CAT enzyme activities in tomato plants exposed to different concentration of Mn2+ contamination revealed no positive correlation. The current study revealed that, ROS induced lipid peroxidation level has depended on concentration of Mn2+ contamination. Also, antioxidant responses to Mn2+ contamination could be reflected as changes in CAT enzyme activity in tomato plants
Bu çalışmada, domates bitkileri Lycopersicum esculentum L. çeşitli konsantrasyonlardaki 80, 160, 320, 640 ve 1280 μM Mn2+ katyonuna maruz bırakılmıştır. Çalışmanın ilk bölümünde Mn2+ stresini takiben bitkilerin stres etkisine gitmiş olduklarını göstermek için lipit peroksidasyonu düzeyleri belirlenmiştir. İkinci bölümde CAT gen ürününün regülasyonu değerlendirmek için Mn2+ stresli domates bitkilerinde enzim aktivitesi ölçülmüştür. En yüksek lipit peroksidasyonu 1280 μM konsantrasyonda Mn2+ stresine maruz kalan bitkilerde gözlenmiştir. Farklı konsantrasyonlardaki Mnarasında pozitif bir korelasyona rastlanmamıştır. Bu çalışma ile ROS ile tetiklenen lipit peroksidasyonu seviyesinin Mn2+ stresinin konsantrasyonuna bağlı olduğu belirlenmiştir. Aynı zamanda Mn2+ stresine karşı oluşan antioksidan cevapların domates bitkisinde CAT enzim aktivitesinin değişimi olarak yansıyabildiği gözlenmiştir
Primary Language | Turkish |
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Journal Section | Research Article |
Authors | |
Publication Date | December 15, 2013 |
Published in Issue | Year 2013 Volume: 6 Issue: 3 |
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