Alleviation of chromium toxicity by glycinebetaine is related to elevated antioxidant enzymes and suppressed chromium uptake and oxidative stress in wheat (Triticum aestivum L.)

Ali, Shafaqat; Chaudhary, Aaifa; Rizwan, Muhammad; Anwar, Hafiza Tania; Adrees, Muhammad; Farid, Mujahid; Irshad, Muhammad; Hayat, Tahir; Anjum, Shakeel Ahmad

doi:10.1007/s11356-015-4193-4

Cited by 176 publications

(97 citation statements)

References 54 publications

(69 reference statements)

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“…Meanwhile, the excessive oxalic and tartaric acids in roots under Cd stress may contribute to a lower translocation factor with 20 mM GB application plants to non-GB treatment. Furthermore, GB played an important role in effective protection against lead and chromium (Ali et al 2015;Bhatti et al 2013).…”

Section: Discussionmentioning

confidence: 99%

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: Discussionmentioning

confidence: 99%

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

Lou

Yang

et al. 2015

Ecotoxicology

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“…Oxidative stress may occur in plants when they are exposed to various environmental stresses, both biotic and abiotic, including heavy metal stress (Adrees et Ali et al, 2015aAli et al, , 2015bHabiba et al, 2015;Noman et al, 2015). However, Si application may reduce oxidative stress in plants by reducing the production of reactive oxygen species (ROS) and by enhancing the activities of antioxidant enzymes.…”

Section: Enhancement In Antioxidant Defense Systemmentioning

confidence: 99%

“…It has been widely reported that accumulation of heavy metals in plants may cause many biochemical, structural and physiological changes (Nagajyoti et al, 2010;Afshan et al, 2015). Heavy metals negatively affected plant growth, biomass and photosynthesis (Wuana and Okieimen, 2011;Adrees et al, 2015;Ali et al, 2015aAli et al, , 2015b. In an excess, heavy metals also affect the accumulation and translocation of essential elements by plants (Wagner, 1993;Wuana and Okieimen, 2011;Zia-ur-Rehman et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Mechanisms of silicon-mediated alleviation of heavy metal toxicity in plants: A review

Adrees

Ali

Rizwan

et al. 2015

Ecotoxicology and Environmental Safety

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714

248

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“…Different actions have been taken to reduce heavy metal uptake and toxicity in plants including exogenous application of different materials such as humic substances Noman et al 2015), osmoprotectants (Adrees et al 2015c;Ali et al 2015b), soil amendments (Rehman et al 2015) and silicon (Rizwan et al 2012;Adrees et al 2015b;Keller et al 2015). Silicon (Si) is the second most abundant element of the earth's crust and is considered a quasi-essential element for plant growth and development (Epstein and Bloom 2005).…”

Section: Downloaded By [University Of Otago] At 22:57 24 July 2015mentioning

confidence: 99%

Silicon alleviates nickel toxicity in cotton seedlings through enhancing growth, photosynthesis, and suppressing Ni uptake and oxidative stress

Khaliq

Ali

Hameed

et al. 2015

Archives of Agronomy and Soil Science

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107

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2015): Silicon alleviates nickel toxicity in cotton seedlings through enhancing growth, photosynthesis and suppressing Ni uptake and oxidative stress Silicon alleviates nickel toxicity in cotton, Archives of Agronomy and Soil Science To link to this article: http://dx. AbstractCotton (Gossypium hirsutum L.) is a well-known and economically most beneficial crop worldwide while nickel (Ni) toxicity is widespread problem in crops grown on Nicontaminated soils. We investigated the response of silicon (Si) in cotton under Ni stress with respect to growth, biomass, gas exchange attributes, enzymatic activities and Ni uptake and accumulation. For this, plants were grown in hydroponics for 12 weeks with three levels of Ni (0, 50 and 100 µM) in the presence or absence of 1 mM Si. Results showed that Ni Downloaded by [University of Otago] at 22:57 24 July 2015 A c c e p t e d M a n u s c r i p t significantly reduced the plant growth, biomass, gas exchange attributes and pigment contents while Si application mitigated these adverse effects under Ni stress. Nickel stress significantly decreased antioxidant enzymes activities while increased malondialdehyde (MDA), hydrogen peroxide (H 2 O 2 ) and electrolyte leakage (EC) in leaves and roots. The application of Si enhanced the activities of antioxidant enzymes and reduced MDA, H 2 O 2 and EC in plants.Nickel application significantly increased Ni concentration and accumulation in leaf, stem and roots while Si application significantly decreased Ni in these plant parts. The present study indicates that Si could improve cotton growth under Ni stress by lowering Ni uptake and reactive oxygen species (ROS) and by increasing antioxidant enzymes activities.

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Alleviation of chromium toxicity by glycinebetaine is related to elevated antioxidant enzymes and suppressed chromium uptake and oxidative stress in wheat (Triticum aestivum L.)

Cited by 176 publications

References 54 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

Mechanisms of silicon-mediated alleviation of heavy metal toxicity in plants: A review

Silicon alleviates nickel toxicity in cotton seedlings through enhancing growth, photosynthesis, and suppressing Ni uptake and oxidative stress

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