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Fornazier, Ricardo Francisco; Ferreira, Renato Rodrigues; Pereira, Guilherme Caldeira Quintino; Molina, Silvia; Smith, Richard J.; Lea, Peter J.; Azevedo, Ricardo Antunes

doi:10.1023/a:1019917705111

Cited by 74 publications

(6 citation statements)

References 27 publications

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“…It has been showed that H 2 O 2 was produced and metabolized by CAT (Li et al 2005); its activity is directly regulated by the concentration H 2 O 2 (Fornazier et al 2002). In leaves, CAT activity declined whereas POD activity increased.…”

Section: Discussesmentioning

confidence: 99%

Cadmium induction of lipid peroxidation and effects on root tip cells and antioxidant enzyme activities in Vicia faba L.

Zhang

Qin

et al. 2009

Ecotoxicology

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The effects of different concentrations (1-50 microM) of Cd on root growth, cell division and nucleoli in root tip cells, protective enzyme activities and lipid peroxidation in Vicia faba were investigated in order to better understand the processes of Cd-induced senescence. The results indicated that lower concentration of Cd (1 microM) had no obviously influence on the root growth during 24-48 h treatment, but higher concentrations (5-50 microM) inhibited significantly after 48 and 72 h. The mitotic index decreased with increasing of Cd concentration and duration of treatment except for the group exposed to 1 microM Cd. Cd induced c-mitosis, chromosome bridges, chromosome stickiness and lagging chromosomes. The rate of aberrant dividing cells increased with prolonging duration of treatment and increasing of Cd concentration. On nucleolus, some particulates containing the argyrophilic proteins were extruded from the nucleus into the cytoplasm in the cells stressed by Cd and some were scattered in the nucleus. After the treatment with Cd (10 microM Cd, 48 h), the nucleolus did not disaggregate normally and still remain its characteristic structure during metaphase and the particles of similar silver-stained materials were localized on chromosomes. In leaves, Catalase (CAT) activity declined but Peroxidase (POD) activity increased with increasing of the duration of treatment. In roots, CAT activity increased with increasing of the duration of treatment, POD activity increased during early days and then declined. Superoxide dismutase (SOD) activity showed an upward trend with increasing of the duration of treatment after 3 and 6 days, then declined both in leaves and roots (9 days). SOD and POD had highest activities at 50 microM Cd in leaves. CAT activity was lowest at 50 microM Cd. Malondialdehyde (MDA) content increased with the increasing of Cd concentrations and duration of treatment in leaves. In roots, MDA content showed an upward trend with increasing of the duration of treatment at early time and then declined.

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Section: Discussesmentioning

confidence: 99%

Cadmium induction of lipid peroxidation and effects on root tip cells and antioxidant enzyme activities in Vicia faba L.

Zhang

Qin

et al. 2009

Ecotoxicology

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“…Recent researches concerning heavy metals and other stresses have focused on natural growth plants (Gonnelli et al 2001;Shi et al 2003;Lou et al 2004;Chatzissavvidis et al 2008;Cui et al 2010;Lokhande et al 2010;Xu et al 2010). To our knowledge, very little is known about the toxicity of heavy metals and other stress factors in callus (Fornazier et al 2002;Taddei et al 2007;Sun et al 2010;Yang et al 2010) and no work has, so far, been carried out to research physiological changes under copper stress in A. philoxeroides callus.…”

Section: Introductionmentioning

confidence: 99%

Copper-induced oxidative stress in Alternanthera philoxeroides callus

Shi

Wang

et al. 2011

Plant Cell Tiss Organ Cult

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“…Noctor et al, [87] found that during drought stress conditions increased SOD activity is an indicator of drought tolerance in tomato. CAT also has the potential to mitigate oxidative stress [88]. The increased concentration of CAT and SOD converts toxic O 2 to H 2 O 2 and ultimately into water and molecular oxygen, reversing damage under adverse conditions, so both these play a role in scavenging ROS at the cellular level [89].…”

Section: Discussionmentioning

confidence: 99%

Promotion of Growth and Physiological Characteristics in Water-Stressed Triticum aestivum in Relation to Foliar-Application of Salicylic Acid

Parveen

Ashraf

Hussain

et al. 2021

Water

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The present work reports the assessment of the effectiveness of a foliar-spray of salicylic acid (SA) on growth attributes, biochemical characteristics, antioxidant activities and osmolytes accumulation in wheat grown under control (100% field capacity) and water stressed (60% field capacity) conditions. The total available water (TAW), calculated for a rooting depth of 1.65 m was 8.45 inches and readily available water (RAW), considering a depletion factor of 0.55, was 4.65 inches. The water contents corresponding to 100 and 60% field capacity were 5.70 and 1.66 inches, respectively. For this purpose, seeds of two wheat cultivars (Fsd-2008 and S-24) were grown in pots subjected to water stress. Water stress at 60% field capacity markedly reduced the growth attributes, photosynthetic pigments, total soluble proteins (TSP) and total phenolic contents (TPC) compared with control. However, cv. Fsd-2008 was recorded as strongly drought-tolerant and performed better compared to cv. S-24, which was moderately drought tolerant. However, water stress enhanced the contents of malondialdehyde (MDA), hydrogen peroxide (H2O2) and membrane electrolyte leakage (EL) and modulated the activities of antioxidant enzymes (superoxide dismutase (SOD), peroxidase (POD), and catalase (CAT), as well as accumulation of ascorbic acid (AsA), proline (Pro) and glycine betaine (GB) contents. Foliar-spray with salicylic acid (SA; 0, 3 mM and 6 mM) effectively mitigated the adverse effects of water stress on both cultivars. SA application at 6 mM enhanced the shoot and root length, as well as their fresh and dry weights, and improved photosynthetic pigments. SA foliage application further enhanced the activities of antioxidant enzymes (SOD, POD, and CAT) and nonenzymatic antioxidants such as ascorbic acid and phenolics contents. However, foliar-spray of SA reduced MDA, H2O2 and membrane permeability in both cultivars under stress conditions. The results of the present study suggest that foliar-spray of salicylic acid was effective in increasing the tolerance of wheat plants under drought stress in terms of growth attributes, antioxidant defense mechanisms, accumulation of osmolytes, and by reducing membrane lipid peroxidation.

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Cited by 74 publications

References 27 publications

Cadmium induction of lipid peroxidation and effects on root tip cells and antioxidant enzyme activities in Vicia faba L.

Cadmium induction of lipid peroxidation and effects on root tip cells and antioxidant enzyme activities in Vicia faba L.

Copper-induced oxidative stress in Alternanthera philoxeroides callus

Promotion of Growth and Physiological Characteristics in Water-Stressed Triticum aestivum in Relation to Foliar-Application of Salicylic Acid

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