Antioxidant parameters under salt stress in drought tolerant and susceptible wheat cultivars

Kaur, Lovlace; Zhawar, Vikramjit Kaur

doi:10.1007/s40502-015-0200-5

Cited by 4 publications

(3 citation statements)

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“…Moreover, MDA content increased in both 'Arta' and 'Darab2' cultivars but in 'Arta' there was no significant difference in MDA content between all treatments (Table 1). Sairam et al (2005), Esfandiari and Javadi (2014), Rahmani and Padervand (2016) and Kaur and Zhawar (2016) reported that MDA content increased in salt tolerant and sensitive wheat cultivars. Although, these researchers observed that the severity of damage in cell membranes or MDA content was more in salt sensitive cultivars as compared to salt tolerant ones.…”

Section: Resultsmentioning

confidence: 97%

“…In the other word, chloroplasts, mitochondria and peroxisomes are the major sources of ROS production in plant cells (Sharma et al, 2012). ROS are highly cytotoxic and can seriously react with vital biomolecules such as lipids, proteins, nucleic acid etc., causing lipid peroxidation, protein denaturing and DNA mutation, respectively (Kaur and Zhawar, 2016). Recent evidence suggests the cell membranes are the primary effect sites in salinity stress (Bita and Gerats, 2013) because reaction of ROS and unsaturated fatty acids cause peroxidation of essential membrane lipids in plasmalemma or intracellular organelles (Bita and Gerats, 2013).…”

Section: Introductionmentioning

confidence: 99%

“…ROS generated by abiotic stresses such as salinity must be scavenged for security of essential macromolecules from destructive effects of ROS and maintenance of normal growth (Caverzan et al, 2016;Kaur and Zhawar, 2016). Superoxide dismutase (SOD: EC 1.15.1.1) is the primary scavenger, which localized in chloroplasts, mitochondria, peroxisomes and cytosol.…”

Section: Introductionmentioning

confidence: 99%

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Response of ROS-Scavenging Systems to Salinity Stress in Two Different Wheat (Triticum aestivum L.) Cultivars

Esfandiari

Gohari

2017

Not Bot Horti Agrobo

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Salinity leads to oxidative stress in plant cells due to increased production of reactive oxygen species. The response of two wheat (Triticum aestivum L.) cultivars, salt sensitive ('Darab2') and salt-tolerant ('Arta') were studied to salinity-induced oxidative stress (0, 75 and 150 mM NaCl). Increasing of lipid peroxidation caused oxidative stress in both sensitive and tolerant cultivars. The result showed that reactive oxygen species (ROS) viz., superoxide and hydrogen peroxide increased in leaves of 'Darab2' under salinity stress. Under salinity stress, the salt-tolerant cv. 'Arta' showed higher activity of the ROS scavenging enzymes like ascorbate peroxidase and peroxidases than 'Darab2'. Furthermore, in sensitive cv. 'Darab2' the activities of these enzymes in leaves were unable to prevent the scavenging of H 2 O 2 . Unlike 'Arta', there were no significant differences in superoxide dismutases and glutathione reductase activities in sensitive cv. 'Darab2' under salinity stress. The amount of reduced glutathione, reduced/oxidized glutathione ratio in leaves of 'Darab2' was lower than 'Arta' under saline conditions. It seems that in salt tolerant cultivars like 'Arta', both enzymatic and non-enzymatic ROS scavenging machineries is critical point to overcome salinity-induced oxidative stress.

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Section: Resultsmentioning

confidence: 97%