Effects of Cadmium on Enzymatic and Non-Enzymatic Antioxidative Defences of Rice (<i>Oryza Sativa</i>L.)

Yu, Fangming; Liu, Kehui; Li, Mingshun; Zhou, Zhenming; Duan, Hua; Chen, Bin

doi:10.1080/15226514.2012.702807

Cited by 66 publications

(23 citation statements)

References 15 publications

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“…CAT and POD are the most important enzymes in the regulation of intracellular H 2 O 2 levels (Blokhina et al, 2003). Some researchers have indicated the activity of antioxidative enzymes to be elevated in plant tissues under Cd stress (Elobeid et al, 2012;He et al, 2013a;Yu et al, 2013). However, here, the activity of antioxidant enzymes (SOD, CAT, and POD) was inhibited or unchanged after various Cd treatments (Fig.…”

Section: Antioxidant Enzymesmentioning

confidence: 46%

Subcellular cadmium distribution and antioxidant enzymatic activities in the leaves of two castor ( Ricinus communis L.) cultivars exhibit differences in Cd accumulation

Zhang

Guo

Yang

et al. 2015

Ecotoxicology and Environmental Safety

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a b s t r a c tThe aims of this study were: (1) the study of cadmium (Cd) accumulation and toxicity in different castor cultivars (Ricinus communis L.); (2) to investigate changes in antioxidant enzymatic activities and the subcellular distribution of Cd in young and old leaves from two different castor cultivars, after exposure to two different Cd concentrations, and explore the underlying mechanism of Cd detoxification focusing on antioxidant enzymes and subcellular compartmentalization. The Cd concentration, toxicity, and subcellular distribution, as well as superoxide dismutase (SOD), catalase (CAT), and peroxidase (POD) activities were measured in Zibo-3 and Zibo-9 cultivars after exposure to two different concentrations of Cd (2 mg/L and 5 mg/L) for 10 days. This research revealed Cd accumulation characteristics in castor are root4 stem4 young leaf 4old leaf. Castor tolerance was Cd dose exposure and the cultivars themselves dependent. Investigation of subcellular Cd partitioning showed that Cd accumulated mainly in the heat stable protein (HSP) and cellular debris fractions, followed by the Cd rich granule (MRG), heat denatured protein (HDP), and organelle fractions. With increasing Cd concentration in nutrient solution, the decreased detoxified fractions (BDM) and the increased Cd-sensitive fractions (MSF) in young leaves may indicate the increased Cd toxicity in castor cultivars. The BDM-Cd fractions or MSF-Cd in old leaves may be linked with Cd tolerance of different cultivars of castor. The antioxidant enzymes that govern Cd detoxification were not found to be active in leaves. Taken together, these results indicate Cd tolerance and toxicity in castor can be explained by subcellular partitioning.Crown

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Section: Antioxidant Enzymesmentioning

confidence: 46%

Subcellular cadmium distribution and antioxidant enzymatic activities in the leaves of two castor ( Ricinus communis L.) cultivars exhibit differences in Cd accumulation

Zhang

Guo

Yang

et al. 2015

Ecotoxicology and Environmental Safety

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“…Some kinase genes were also overexpressed in seedlings grown with As 2 O 3 45x, suggesting the importance of those signal proteins in response to environmental stimuli. Literature reports suggested that the oxidative tissue damage induced by heavy metals [ 58 , 59 ] could result also in the elevation of Ca 2+ concentration in plant cells, in which Ca 2+ played an important role in free radical scavenger induction [ 60 , 61 ].…”

Section: Resultsmentioning

confidence: 99%

Transcriptome Profiling of Wheat Seedlings following Treatment with Ultrahigh Diluted Arsenic Trioxide

Marotti

Betti

Bregola

et al. 2014

Evidence-Based Complementary and Alternative Medicine

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Plant systems are useful research tools to address basic questions in homeopathy as they make it possible to overcome some of the drawbacks encountered in clinical trials (placebo effect, ethical issues, duration of the experiment, and high costs). The objective of the present study was to test the hypothesis whether 7-day-old wheat seedlings, grown from seeds either poisoned with a sublethal dose of As2O3 or unpoisoned, showed different significant gene expression profiles after the application of ultrahigh diluted As2O3 (beyond Avogadro's limit) compared to water (control). The results provided evidence for a strong gene modulating effect of ultrahigh diluted As2O3 in seedlings grown from poisoned seeds: a massive reduction of gene expression levels to values comparable to those of the control group was observed for several functional classes of genes. A plausible hypothesis is that ultrahigh diluted As2O3 treatment induced a reequilibration of those genes that were upregulated during the oxidative stress by bringing the expression levels closer to the basal levels normally occurring in the control plants.

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“…Reports have shown reduction in rice growth and biomass, which might possibly be as a result of different Cd-mediated toxicity mechanisms in rice [10]. Various other studies have also reported that the toxic effects of Cd increased rice seedlings oxidative stress by releasing reactive oxygen species (ROS) like malondialdehyde (MDA) contents, hydrogen peroxide (H 2 O 2 ), and electrolyte leakage which affects rice growth and performance [10,11]. Cadmium toxicity also altered leaf and root ultrastructure and caused structural damage to photosynthetic apparatus of rice [12].…”

Section: Introductionmentioning

confidence: 99%

Cadmium Uptake and Distribution in Fragrant Rice Genotypes and Related Consequences on Yield and Grain Quality Traits

Kanu

Ashraf

et al. 2017

Journal of Chemistry

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Cadmium (Cd) toxicity has varying consequences on plants growth and development. This research focused on examining the influence of Cd toxicity on fragrant rice genotypes and its consequences on yield, yield related parameters, and grain quality traits. Randomized complete block design comprising five different fragrant rice cultivars (Meixiangzhan 2, Xiangyaxiangzhan, Guixiangzhan, Basmati, and Nongxiang 18) and four Cd levels (0, 50, 100, and 150 mg/kg soil) was used. The results showed that, with increased levels of soil Cd toxicity, Cd uptake in roots and distribution to other organs increased in dose dependent manner. Uptake and accumulation were higher in roots than in shoots with the highest uptake in both roots and shoots observed in Meixiangzhan 2, followed by Nongxiang 18, Basmati, Xiangyaxiangzhan, and Guixiangzhan cultivars. With increased Cd toxicity, yield and yield parameters were affected in all cultivars. Grain quality was also found affected under Cd stress condition. The results suggested that soil Cd toxicity has negative consequences on rice performance and uptake varies among cultivars. Conclusively, Cd toxicity impaired rice yield formation and grain quality by altering yield components (panicles number, spikelet per panicles, and spikelet setting (%)); however, Guixiangzhan variety performed better, while Meixiangzhan 2 performed less in terms of minimum Cd uptake and distribution to grains, yield, and grain quality reduction under Cd stress condition.

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Effects of Cadmium on Enzymatic and Non-Enzymatic Antioxidative Defences of Rice (Oryza SativaL.)

Cited by 66 publications

References 15 publications

Subcellular cadmium distribution and antioxidant enzymatic activities in the leaves of two castor ( Ricinus communis L.) cultivars exhibit differences in Cd accumulation

Subcellular cadmium distribution and antioxidant enzymatic activities in the leaves of two castor ( Ricinus communis L.) cultivars exhibit differences in Cd accumulation

Transcriptome Profiling of Wheat Seedlings following Treatment with Ultrahigh Diluted Arsenic Trioxide

Cadmium Uptake and Distribution in Fragrant Rice Genotypes and Related Consequences on Yield and Grain Quality Traits

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