Antioxidant Enzyme Responses to NaCl Stress in Cassia angustifolia

Agarwal, Sheela; Pandey, Vivek

doi:10.1023/b:biop.0000047152.07878.e7

Cited by 294 publications

(170 citation statements)

References 33 publications

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“…PPO activity increases during the progression of stress and is a possible tolerance mechanism as demonstrated in peach seedlings subjected to freezing stress (Szalay et al 2005) and salt-stressed C. angustifolia (Agarwal and Pandey 2004). PPO levels in Lablab indicated a possible role during early 24 h of exposure at lower concentration of salt up to 300 mM, in both, leaf, and root tissues.…”

Section: Discussionmentioning

confidence: 88%

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Biochemical responses of Hyacinth bean (Lablab purpureus) to salinity stress

D’souza

Devaraj

2009

Acta Physiol Plant

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Effect of salinity on Hyacinth bean, Lablab purpureus (HA-4 cultivar) was evaluated in 10-day old seedlings with 100-500 mM NaCl over 72 h of exposure. The stress reduced dry and fresh weight, leaf surface area, root and shoot length, total chlorophyll, and RWC. Oxidative stress markers, H 2 O 2 , glutathione, TBARS, proline, ascorbic acid, total phenols, and total soluble sugar contents were significantly elevated. Salinity enhanced antioxidant enzymes, POX, and GR activities and reduced that of CAT in concentration and time dependent manner in leaves. Antioxidant enzymes in roots showed inverse relationship with concentration and time of exposure. Metabolic enzyme b-amylase activity increased in both leaves and roots. Acid phosphatase decreased in leaves and elevated in roots. Intensity of constitutive isozymes correlated with in vitro levels under stress, but the protein band patterns differed from controls. Lablab showed reasonable tolerance up to 300 mM NaCl, but leaves and roots differed in their response.

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Section: Discussionmentioning

confidence: 88%

“…Such increase in root TBARS content was observed in number of plants, viz. O. sativa (Khan and Panda 2008) and C. angustifolia (Agarwal and Pandey 2004). Absence of significant increment in peroxidation in Lablab bean beyond 300 mM NaCl could be a result of inhibition of peroxidation by ROS at higher concentrations of NaCl.…”

Section: Discussionmentioning

confidence: 94%

Biochemical responses of Hyacinth bean (Lablab purpureus) to salinity stress

D’souza

Devaraj

2009

Acta Physiol Plant

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“…The role of POD as a stress enzyme in plants has been widely accepted. POD activity has been suggested as a potential biomarker for metal toxicity in plant species (Agawal and Pandey, 2004). Induction of POD activity has been documented under many stress conditions such as NaCl stress (Agawal and Pandey, 2004), high temperature (El-Shintinawy et al, 2004) and toxic concentrations of Cu, Pb, Zn, Cd and Al (Cakmak and Horst 1991;Guo et al, 2004;Radotic et al, 2000).…”

Section: Pb Effects On Antioxidant Enzymementioning

confidence: 99%

Oxidative Stress Induction by Lead in Leaves of Radish (Raphanus sativus) Seedlings

et al. 2011

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Oxidative stress was induced by lead acetate (Pb) in Raphanus sativus seedlings grown in a hydroponic system using sand as substrate. Thirty day old acclimated seeds were treated for 7 days with five Pb levels (0 as control, 100, 200, 500 and 1000 mg l -1 ). Parameters such as growth, oxidative damage markers (lipid peroxidation, protein oxidation and hydrogen peroxide contents) and enzymatic activities of catalase (CAT) and peroxidase (POD) were investigated. Lead concentration in plant tissues increased with increasing of Pb levels. Shoot fresh weight, chlorophyll and carotenoid concentration were significantly decreased at 100 mg l -1 Pb. Lipid peroxidation, protein oxidation and H 2 O 2 levels were increased at 500 and 1000 mg l -1 Pb compared to control treatment, in shoots. Peroxidase activity showed a straight correlation with H 2 O 2 concentration, whereas CAT activity decreased only in shoots. These changes in enzymatic and non-enzymatic antioxidants showed that the Pb exposition had a significant disturbance on Raphanus sativus plantlets and affect the biochemical and physiological processes.

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“…To alleviate adverse effects of reactive oxygen species, plants have evolved an antioxidant defense system that include enzymes like superoxide dismutase, peroxidase and catalase etc. (Agarwal and Pandey 2004).…”

mentioning

confidence: 99%

Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

Bano¹,

Ullah²,

Nosheen³

2012

Plant Soil Environ.

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The effect of drought stress and abscisic acid (ABA) applied at tillering stage (55 days after sowing) was compared in 2 wheat cultivars differing in drought tolerance. The activities of superoxide dismutase (SOD) and peroxidase (POD) and contents of endogenous ABA in plants were measured at 3 days of drought stress in cv. Chakwal-97 (drought tolerant) and cv. Punjab-96 (drought susceptible). ABA was applied at 10 -6 mol/L as presowing seed treatment for 18 h. Drought tolerant cultivar has a more efficient mechanism to scavenge reactive oxygen species as shown by a significant increase in the activity of antioxidant enzyme SOD. Under drought stress, ABA significantly increased the activities of SOD and POD, showing a significant decline on rewatering. The relative water content was significantly increased by ABA priming under drought stress in both wheat cultivars. The sensitive cultivar exhibiting lower endogenous ABA content was more responsive to ABA priming. On rewatering, the magnitude of recovery from drought stress was greater in tolerant cultivar. ABA was highly effective in improving grain weight of tolerant cultivar under drought stress.

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Antioxidant Enzyme Responses to NaCl Stress in Cassia angustifolia

Cited by 294 publications

References 33 publications

Biochemical responses of Hyacinth bean (Lablab purpureus) to salinity stress

Biochemical responses of Hyacinth bean (Lablab purpureus) to salinity stress

Oxidative Stress Induction by Lead in Leaves of Radish (Raphanus sativus) Seedlings

Role of abscisic acid and drought stress on the activities of antioxidant enzymes in wheat

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