ANTIOXIDANT RESPONSES OF PEANUT (ARACHIS HYPOGAEA L.) SEEDLINGS TO PROLONGED SALT-INDUCED STRESS

2015-01-01
KAVAS, MUSA
Akca, Oya Ercan
Akcay, Ufuk Celikkol
Peksel, Begum
Eroğlu, Seçkin
Öktem, Hüseyin Avni
Yucel, Meral
In this study, the effects of long-term NaCl treatment were investigated in two cultivars of peanut designated as drought-resistant and drought-sensitive. Growth parameters, changes in the concentrations of MDA, H2O2 and proline, and the activities of antioxidant enzymes were determined under salinity stress. Growth parameters indicated the superiority of cv. Florispan to cv. Gazipasa under milder salinity stress treatment. However, comparative analysis of the two cultivars showed that MDA, H2O2, ion leakage levels and photosystem II activities were not significantly different, except for the proline activity, which increased only in Florispan leaf tissues under 100 mM salt treatment. Among the processes that govern the tolerance in peanut tissues, proline level and the activity of glutathione reductase (GR) appeared to be only components that play an important part in salt stress protection.
ARCHIVES OF BIOLOGICAL SCIENCES

Suggestions

Drought-induced oxidative damage and antioxidant responses in peanut (Arachis hypogaea L.) seedlings
Akcay, U. Celikkol; Ercan, O.; Kavas, M.; Yildiz, L.; Yılmaz, Çetin; Öktem, Hüseyin Avni; YÜCEL, MUSTAFA (2010-05-01)
Two cultivars of peanut (Arachis hypogaea L.) which were designated as resistant (Florispan) and sensitive (Gazipasa) according to their growth retardation under drought stress conditions were compared for their oxidative damage and antioxidant responses. Sixteen days-old peanut seedlings were subjected to PEG-6000 solutions of two different osmotic potentials; -0.4 and -0.8 MPa, and various growth parameters, photosystem II activity, changes in malondialdehyde (MDA), hydrogen peroxide (H2O2) and proline le...
Antioxidant responses of shoots and roots of lentil to NaCl-salinity stress
Bandeoglu, E; Eyidogan, F; Yucel, M; Öktem, Hüseyin Avni (2004-01-01)
The effect of salt stress (100 mM and 200 mM NaCl) on antioxidant responses in shoots and roots of 14-day-old lentil (Lens culinaris M.) seedlings was investigated. Salt stress caused a significant decrease in length, wet-dry weight and an increase in proline content of both shoot and root tissues. In leaf tissues, high salinity treatment resulted in a 4.4 fold increase in H2O2 content which was accompanied by a significant level of lipid peroxidation and an increase in electrolyte leakage. Root tissues wer...
Thermostability and regulation of Clostridium thermocellum L-lactate dehydrogenase expressed in Escherichia coli
Assa, P; Ozkan, M; Özcengiz, Gülay (2005-01-01)
In this study, L-lactate dehydrogenase (L-LDH) of Clostridium thermocellum previously cloned aid expressed in Escherichia coli FMJ39 was partially purified and characterised. Optimum temperature and pH of the enzyme were found as 50 degrees C and 7.5, respectively. Different concentrations of Mn2+ did not affect the enzyme activity. Addition of 20-30 mM Mg2+, or the other hand, increased the LDH activity by about 10%. Relatively high concentrations of NaCl (2 M), fructose-1,6-diphosphate (FDP, 5 mM), ATP (1...
Enzymatic hydrolysis of fruit peels and other lignocellulosic biomass as a source of sugar for fermentation
Poçan, Pelin; Öztop, Halil Mecit; Hamamcı, Haluk; Department of Food Engineering (2015)
In this study, enzymatic hydrolysis of corn cobs, orange and pomegranate peels were evaluated. For the hydrolysis of corn cobs, effect of alkaline pretreatment was examined and it was found that glucose and reducing sugar yield (%) for the pretreated corn cobs increased from 7% to 21.5% and 14% to 33.6% respectively. Effect of cellobiase loading on hydrolysis efficiency was also investigated. It was observed that when cellobiase was added to hydrolysate in addition to cellulase, glucose and total reducing s...
Antioxidant responses of tolerant and sensitive barley cultivars to boron toxicity
Karabal, E; Yucel, M; Öktem, Hüseyin Avni (2003-06-01)
Effect of boron toxicity on antioxidant response of sensitive (Hamidiye) and tolerant (Anadolu) barley (Holgarium vulgar) cultivars was investigated. Eight days old hydroponically grown seedlings were subjected to 5 and 10 mM boric acid treatments for 5 days. Growth parameters (dry-wet weight), protein, proline, MDA, H2O2 contents, membrane damage and activities of superoxide dismutase (SOD). ascorbate peroxidase (APX), catalase (CAT) and glutathion reductase (GR) was evaluated in root and shoot tissues. Co...
Citation Formats
M. KAVAS et al., “ANTIOXIDANT RESPONSES OF PEANUT (ARACHIS HYPOGAEA L.) SEEDLINGS TO PROLONGED SALT-INDUCED STRESS,” ARCHIVES OF BIOLOGICAL SCIENCES, pp. 1303–1312, 2015, Accessed: 00, 2020. [Online]. Available: https://hdl.handle.net/11511/42771.