Physiological and Biochemical Changes in<i>Brassica juncea</i>Plants under Cd-Induced Stress

Kapoor, Dhriti; Kaur, Satwinderjeet

doi:10.1155/2014/726070

Cited by 73 publications

(32 citation statements)

References 36 publications

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“…In the present study, antioxidant enzymes such as SOD, CAT and POD activity, that scavenge free radicals to protect against oxidant damage (Kapoor et al 2014), increased remarkably under Cd stress (Table 6). However, exogenous GB application enhanced the activity of all enzymes.…”

Section: Discussionsupporting

confidence: 55%

Exogenous glycinebetaine alleviates the detrimental effect of Cd stress on perennial ryegrass

Lou

Yang

et al. 2015

Ecotoxicology

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Glycinebetaine (GB) is an important organic osmolyte that accumulates in many plant species in response to abiotic stresses including heavy metals. The objective of this study was to investigate whether exogenous GB would ameliorate the adverse effect of cadmium (Cd) stress on perennial ryegrass (Lolium perenne). Fifty-three days old seedlings were exposed to hydroponic culture for 7 days with six treatments: T1 (control), T2 (0 mM Cd + 20 mM GB), T3 (0 mM Cd + 50 mM GB), T4 (0.5 mM Cd + 0 mM GB), T5 (0.5 mM Cd + 20 mM GB), T6 (0.5 mM Cd + 50 mM GB). Cd stress resulted in a remarkable decrease in turf quality, vertical shoot growth rate (VSGR), normalized relative transpiration (NRT) and Chlorophyll (Chl) content; with significant increases in electric conductivity (EL), malondialdehyde (MDA) content, superoxide dismutase (SOD), catalase (CAT), peroxidase (POD) activity, oxalic and tartaric acid content. Exogenous application of GB decreased EL and MDA content in Cd stressed plants, and increased turf quality, VSGR, NRT, Chl content, SOD, CAT, POD activity, oxalic, tartaric acid content, and the gene expression level of SOD and POD when compared with Cd stressed without GB. Perennial ryegrass with 20 mM GB application suppressed the Cd accumulation in both shoots and roots. A lower translocation factor of Cd was found in GB treated plants than non-GB treated plants, and the lowest translocation factor was observed in the 20 mM GB application. These results suggested that GB could alleviate the detrimental effect of Cd on perennial ryegrass and the amelioration was mainly related to the elevation in SOD, CAT, and POD at enzyme and gene expression levels, which reduced Cd content in shoots and improved cell membrane stability by reducing oxidation of membrane lipids. These findings lead us to conclude that application of GB with 20 mM is the best strategy to ameliorate the detrimental impacts of Cd stress on perennial ryegrass.

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Section: Discussionsupporting

confidence: 55%

Exogenous glycinebetaine alleviates the detrimental effect of Cd stress on perennial ryegrass

Lou

Yang

et al. 2015

Ecotoxicology

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“…Similarly, observations have been made in many plants species [34][35][36]. Other results that support what has been shown here, are those by Kapoor et al [37] with his study on Brassica juncea L. under Cd stress, Rastgoo et al [38] with their study on Aeluropus littoralis under copper, nickel and zinc. It has been proposed that Cu at toxic concentration interferes with enzymes associated with chlorophyll biosynthesis and protein composition of photosynthetic membranes [39].…”

Section: Effect Of Strontium On Photosynthetic Pigmentssupporting

confidence: 90%

Effect of Metal Stress due to Strontium and The Mechanisms of Tolerating it by Amaranthus caudatus L.

Ramasubramanian¹

2016

Biochem Physiol

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Heavy metals are major environmental pollutants when present in high concentration in soil and have toxic effects on growth and development of plants. Experiment were carried out to find out the effect of different levels of strontium element commonly used in the fireworks -cottage industries of this area and the predominant pollutant on growth, biochemical and enzymatic characteristics of Amaranthus caudatus Linn. widely cultivated in this area. This study is aimed at assessing the stress tolerant ability of Amaranthus caudatus Linn. The seedlings of Amanranthus caudatus L. were treated with various concentration of strontium (2 mM, 4 mM, 6 mM, 8 mM, 10 mM) for ten days and its effect on the morphometric, biochemical and enzymatic characters were analyzed. After ten days of treatment, the growth parameters such as leaf area, fresh weight, dry weight, shoot and root length were found decreased than in the control. Biochemical characteristics such as the content of chlorophyll, carotenoid, soluble sugar and protein also decreased with the increase in the concentration of strontium. In contrary, the content of free amino acid, proline, leaf nitrate and the activities of anti-oxidative enzymes such as catalase and peroxidase were found increased with the increase in the concentration of strontium while the activity of nitrate reductase was found decreased. The result suggest that Amaranthus caudatus Linn. has been affected adversely by metal stress due to strontium but at the same time the plant adopts mechanisms such as accumulation of anthocyanin and enhanced activities of antioxidant enzymes to overcome the ill effects of the metal ions. Citation: Kalingan M, Rajagopal S, Venkatachalam R (2016) Effect of Metal Stress due to Strontium and The Mechanisms of Tolerating it byAmaranthus caudatus Linn.

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“…Author found carotenoid content variation in the range from 527 mg*kg ). Similarly, higher carotenoid content was also found by Kapoor et al (2014) in experiment with Brassica juncea. Artemyeva and Solovyeva (2006) detected lower carotenoid content in mibuna and mizuna leaves as it was found in this study, concretely about 30% (mibuna) and 36% (mizuna).…”

Section: Total Carotenoid Contentsupporting

confidence: 60%

Less-known Leaf Vegetables Grown in Slovak Republic Conditions: New Sources of Antioxidants

Šlosár

Mezeyová

Hegedüsová

2016

JCEA

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Physiological and Biochemical Changes inBrassica junceaPlants under Cd-Induced Stress

Cited by 73 publications

References 36 publications

Exogenous glycinebetaine alleviates the detrimental effect of Cd stress on perennial ryegrass

Exogenous glycinebetaine alleviates the detrimental effect of Cd stress on perennial ryegrass

Effect of Metal Stress due to Strontium and The Mechanisms of Tolerating it by Amaranthus caudatus L.

Less-known Leaf Vegetables Grown in Slovak Republic Conditions: New Sources of Antioxidants

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