Response of antioxidants in sunflower (Helianthus annuus L.) grown on different amendments of tannery sludge: its metal accumulation potential

Singh, Surinder; Saxena, Ruchi; Pandey, Kanti Bhooshan; Bhatt, Kavita; Sinha, Sarita

doi:10.1016/j.chemosphere.2004.07.049

Cited by 99 publications

(53 citation statements)

References 29 publications

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“…This result was in agreement with the reaction of Sonneratia apetala with salt stress (Liao and Chen 2007). The content of proline in stems increased with the increased PAH stress and showed negative correlations with the activities of SOD and CAT (see Table 2), which are in agreement with those reported by Singh et al (2004). The complementary action of enzymatic and non-enzymatic antioxidant systems in stems may support the argument that different plant organs might activate different defensive systems to avoid excessive ROS (Li et al 2008), and the antioxidant system may have organ-specific feature.…”

Section: Discussionsupporting

confidence: 80%

“…Significant accumulations (p≤0.01) of proline were found both in leaves and roots under all treatments, though it increased only at 5PAH and 10PAH for stems accompanied by the decrease of SOD, POD and CAT activities. The negative correlation between the proline content and the activities of SOD and POD in stems (Table 2) suggested that accumulation of proline may relieve the damage by the stress, and compensate the inhibition of the antioxidant enzymes in stems (Parida et al 2002, Singh et al 2004.…”

Section: Discussionmentioning

confidence: 99%

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Effects of polycyclic aromatic hydrocarbons exposure on antioxidant system activities and proline content in Kandelia candel

Song

Wang

Sun

et al. 2011

Oceanological and Hydrobiological Studies

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The antioxidant system effects of Kandelia candel were investigated under four different levels of PAH stress. The activities of antioxidant enzymes including superoxide dismutase (SOD), catalase (CAT) and peroxidase (POD), the responses to the change of malondialdehyde (MDA) contents and the accumulation of proline in K. candel were determined. Our results suggested that the activities of SOD, CAT, POD increased significantly in leaves and roots of K. candel (p≤0.05) with the increase of the external PAH concentrations, while in stems, the activities of these antioxidant enzymes were all significantly * Corresponding author: yswang@scsio.ac.cn; Tel/Fax: 8620-89023102(O) inhibited (p≤0.01). We also observed an increase of MDA in leaves, stems and roots, and an obvious correlation between MDA content and PAH concentrations in three locations, which showed that the change of MDA content could be used as a biomarker of K. candel under PAH stress. The proline content was found remarkably enhanced in leaves, stems and roots. However, a significant inverse correlation was observed between the proline content and SOD (r=-0.99, p≤0.01), POD (r=-0.95, p≤0.05) activities in stems. This study suggested that the antioxidative system of K. candel has an obvious organ-dependent feature when exposed to PAH contamination as revealed by discriminant analysis (DA).

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Section: Discussionsupporting

confidence: 80%

Section: Discussionmentioning

confidence: 99%

Effects of polycyclic aromatic hydrocarbons exposure on antioxidant system activities and proline content in Kandelia candel

Song

Wang

Sun

et al. 2011

Oceanological and Hydrobiological Studies

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“…Plants produce ascorbic acid for many functions (45) and rhizospheres often contain the breakdown products of ascorbic acid, which facilitates electron transfer during mineral weathering (46). Plants produce more ascorbic acid when grown in soils contaminated with heavy metals including copper (47). Fungi, which proliferate over plants (48) and bacteria (23) in metal-contaminated soils, can stabilize excess copper (49) by extracellular cation binding or oxalate precipitation (23), but mechanisms probably also require enzymes, thiol-rich proteins and peptides, and antioxidants (23,48,50).…”

Section: Mechanism Of Cumentioning

confidence: 99%

Formation of Metallic Copper Nanoparticles at the Soil−Root Interface

Manceau

Nagy

Marcus

et al. 2008

Environ. Sci. Technol.

222

117

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Copper is an essential element in the cellular electron-transport chain, but as a free ion it can catalyze production of damaging radicals. Thus, all life forms attempt to prevent copper toxicity. Plants diminish excess copper in two structural regions: rare hyperaccumulators bind cationic copper to organic ligands in subaerial tissues, whereas widespread metal-tolerant plants segregate copper dominantly in roots by mechanisms thought to be analogous. Here we show using synchrotron microanalyses that common wetlands plants Phragmites australis and Iris pseudoacorus can transform copper into metallic nanoparticles in and near roots with evidence of assistance by endomycorrhizal fungi when grown in contaminated soil in the natural environment. Biomolecular responses to oxidative stress, similar to reactions used to abiotically synthesize Cu0 nanostructures of controlled size and shape, likely cause the transformation. This newly identified mode of copper biomineralization by plant roots under copper stress may be common in oxygenated environments.

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“…However, the Root Pb concentration of corn and sunflower grown in cow manure amended soil did not show any significant differences, but the TF value of sunflower was significantly greater than corn. It may be concluded that metal accumulation in roots may be dependent on plant physiology or soil rhizosphere condition that affect heavy metal availability or it may be due to binding heavy metal with sulphydryl groups that prevent the heavy metal translocation from root to shoot [29].…”

Section: Effect Of Organic and Inorganic Sources On Plant Pb Concentrmentioning

confidence: 99%

Phytoavailability of Lead (Pb) for Corn and Sunflower as Affected by Pb-enriched Sewage Sludge and Cow Manure

Baghaie¹,

Khoshgoftarmanesh²,

Afyuni³

2016

JRST

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This experiment was aimed to investigate the influence of Pb enriched sewage sludge and cow manure on Pb availability to sunflower (Helianthus annuus L.) and corn (Zea mays L. Single cross 704). a loamy sand soil was treated with organic and inorganic Pb salt. Lead was extracted in 1:2.5 soil: water using metal chelating exchange resin membranes. The ViSuaL minTeQ computer program was used to estimate concentrations of various soluble inorganic and organic species of Pb in the 1:2.5 soil: water extracts and chemical composition data obtained was considered as input data. Regardless of plant type, Pb bioavailability in soil amended with organic amendments was greater than in soil amended with Pb(no 3 ) 2 salt. The soil Pb solution in sewage sludge and cow manure treatments was mainly complexed with dissolve organic carbon (PbDoC) and the other species of the metal in soil solution were low. a strong relationship between concentrations of soil Pb extracted by the Ca-saturated Chelex membrane with shoots and root corn Pb concentration showed that the resin membrane extraction can be used to estimate Pb phytoavailability of soil. according to the results, inorganic and organic components of organic treatments significantly affect Pb phytoavailability.

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Response of antioxidants in sunflower (Helianthus annuus L.) grown on different amendments of tannery sludge: its metal accumulation potential

Cited by 99 publications

References 29 publications

Effects of polycyclic aromatic hydrocarbons exposure on antioxidant system activities and proline content in Kandelia candel

Effects of polycyclic aromatic hydrocarbons exposure on antioxidant system activities and proline content in Kandelia candel

Formation of Metallic Copper Nanoparticles at the Soil−Root Interface

Phytoavailability of Lead (Pb) for Corn and Sunflower as Affected by Pb-enriched Sewage Sludge and Cow Manure

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