Drought-induced oxidative damage and antioxidant responses in peanut (Arachis hypogaea L.) seedlings

Akçay, Ufuk Çelikkol; Ercan, Oya Akça; Kavas, Musa; Yıldız, Leyla; Yılmaz, Can; Öktem, Hüseyin Avni; Yucel, Meral

doi:10.1007/s10725-010-9445-1

Cited by 79 publications

(20 citation statements)

References 46 publications

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“…Encountering water stress and various other abiotic stresses, such as salinity and extremes of tem perature, the cell membrane will be vulnerable to rad ical species such as ROS, resulting in MDA elevation. This study confirms that MDA indeed increased with increasing severity of water shortage, as has been reported previously [24]. It also suggests that at least some cell membrane damage occurred under water stress.…”

Section: Leaf Physiological Traits Cell Function and Wuesupporting

confidence: 92%

Water use efficiency by alfalfa: Mechanisms involving anti-oxidation and osmotic adjustment under drought

Liu

Yang

2012

Russ J Plant Physiol

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Water use and mechanisms relating to osmotic adjustment and anti oxidation were investigated in alfalfa (Medicago sativa L.) plants under reduced water availability. Water use efficiency (WUE), MDA and proline contents, and antioxidant enzyme activities were measured in three alfalfa cultivars under three levels of soil water availability in a greenhouse pot experiment. WUE was determined indirectly using discriminat ing carbon isotope composition. WUE increased with the severity of water deficit. Under all water regimes examined, cv. Longdong showed the greatest WUE values and the least reduction in biomass production under a 50% soil field water capacity. Stomatal density increased with increasing water deficit, but stomatal conductance decreased. This suggests that water stress can increase WUE by modifying stomatal regulation of the balance between the rates of CO 2 assimilation and water loss. The maintenance of leaf physiological function and leaf water status suggests that alfalfa has some mechanisms to maintain cell function when the plant is subjected to water deficit. The increase in the MDA content under drought conditions indicates that some degree of damage to cell membranes is unavoidable, whereas other results showing increases in the con tents of proline and soluble sugars and activities of superoxide dismutase, peroxide dismutase, and catalase indicate how cell function may be to some extent maintained to result in the higher WUE. Alfalfa is shown to exhibit cultivar specific differences in WUE with the maintenance of cell function under water deficit being related to anti oxidation and osmotic adjustment. blue tetrazolium; P nleaf net photosynthetic rate; POD-peroxide dismutase; RWCleaf relative water content; SD-stomatal density; SOD-super oxide dismutase; SS-soluble sugars; WUE-water use efficiency; δ 13 C-discriminating carbon isotope composition.

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Section: Leaf Physiological Traits Cell Function and Wuesupporting

confidence: 92%

Water use efficiency by alfalfa: Mechanisms involving anti-oxidation and osmotic adjustment under drought

Liu

Yang

2012

Russ J Plant Physiol

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“…Since it is the lowest osmotic potential examined, -0.5 MPa was the potential that inhibited most the water uptake by the seeds. According to Celikkol-Akcay et al (2010), this low availability of water added to a high production of reactive oxygen species may lead to oxidation and inactivation of antioxidant enzymes, such as SOD.…”

Section: Resultsmentioning

confidence: 99%

Germination and antioxidant action in melon seeds exposed to salt stress

Pinheiro

Silva

et al. 2016

Pesqui. Agropecu. Trop.

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Salinity influences all germination stages and may adversely affect the seedlings establishment in the field. This study aimed at assessing the effects of salt stress on the physiological potential of melon (Cucumis melo L.) seeds. Germination and activity of superoxide dismutase (SOD), catalase (CAT) and peroxidase (POX) enzymes were assessed at the osmotic potentials of 0.0 MPa, -0.1 MPa, -0.2 MPa, -0.3 MPa, -0.4 MPa and -0.5 MPa. The enzymatic activity was assessed after 24 h, 48 h and 72 h of imbibition. Seed germination was zero at -0.5 MPa and 91 % and 85 % at -0.1 MPa and -0.2 MPa, respectively. In general, the activity of SOD, CAT and POX enzymes increased with the salt-induced stress, in the different times of imbibition, and these increases were more evident at -0.4 MPa and -0.5 MPa. The salt stress induced by NaCl diminishes the germination rate of melon seeds, particularly from the osmotic potential of -0.2 MPa. There is a significant increase in the activity of SOD, CAT and POX enzymes, mainly after 48 h of exposure.

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“…The protective roles of the antioxidant enzymes during drought stress have been reported in a number of crop plants including wheat (AGARWAL et al 2005, SAIRAM andSAXENA 2005) and rice (SHARMA and DUBEY 2005), and also in peanut under simulated water defi cit stress condition using various concentrations poly-ethylene glycol (CELIKKOL-AKCAY et al 2010). However, studies related to stage-specifi c response of peanut crop due to water deficit stress under fi eld conditions are lacking.…”

Section: Introductionmentioning

confidence: 99%

Physiological responses of peanut (Arachis hypogaea L.) cultivars to water deficit stress: status of oxidative stress and antioxidant enzyme activities

Chakraborty

Singh²,

Kalariya³

et al. 2015

Acta Botanica Croatica

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-From a fi eld experiment, the changes in oxidative stress and antioxidant enzyme activities were studied in six Spanish peanut cultivars subjected to 25−30 days of water defi cit stress at two different stages: pegging and pod development stages. Imposition of water defi cit stress signifi cantly reduced relative water content, membrane stability and total carotenoid content in all the cultivars, whereas total chlorophyll content increased at pegging stage but decreased at pod developmental stage. Chlorophyll a/b ratio increased under water defi cit stress in most of the cultivars suggesting a greater damage to chlorophyll b rather than an increase in chlorophyll a content. Oxidative stress measured in terms of H 2 O 2 , superoxide radical content and lipid peroxidation increased under water defi cit stress, especially in susceptible cultivars such as DRG 1, AK 159 and ICGV 86031. Relationship among different physiological parameters showed that the level of oxidative stress, in terms of production of reactive oxygen species, was negatively correlated with activities of different antioxidant enzymes such as superoxide dismutase, catalase, peroxidase, ascorbate peroxidase and glutathione reductase. In conclusion, the study shows that water defi cit stress at pod development stage proved to be more detrimental than at pegging stage. The higher activities of antioxidant enzymes in the tolerant cultivars like ICGS 44 and TAG 24 were responsible for protection of oxidative damage and thus provide better tolerance to water defi cit stress.

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Drought-induced oxidative damage and antioxidant responses in peanut (Arachis hypogaea L.) seedlings

Cited by 79 publications

References 46 publications

Water use efficiency by alfalfa: Mechanisms involving anti-oxidation and osmotic adjustment under drought

Water use efficiency by alfalfa: Mechanisms involving anti-oxidation and osmotic adjustment under drought

Germination and antioxidant action in melon seeds exposed to salt stress

Physiological responses of peanut (Arachis hypogaea L.) cultivars to water deficit stress: status of oxidative stress and antioxidant enzyme activities

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