Cadmium-mediated oxidative stress and ultrastructural changes in root cells of poplar cultivars

Ge, Weiting; Jiao, Yunqiu; Sun, Bai-Ye; Qin, Rong; Jiang, Wusheng; Liu, D.H.

doi:10.1016/j.sajb.2012.07.026

Cited by 45 publications

(14 citation statements)

References 34 publications

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“…For example, at 150 µM Cd there was almost 45% decrease of shoot length. Our results are consistent with those of Ge et al (2012) in poplar cultivars under Cd stress, Domínguez et al (2009) in oak seedlings treated with Cd and those of Wu et al (2010) in poplar plants under cadmium stress. They all noted that the obvious restriction of growth occurred in the fresh and dry weight of roots and aerial parts of stressed plants.…”

Section: Discussionsupporting

confidence: 91%

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Elloumi¹,

Zouari

Chaâri

et al. 2014

Biologia

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Almond (Prunus dulcis L.) seedlings were exposed to 0, 25, 50, 100 and 150 µM of CdCl2 in a solution culture under controlled conditions. The effects of cadmium (Cd) exposure on almond seedlings growth, stomatal architecture, gas exchange and physiological parameters were investigated. Under cadmium stress conditions, significant decrease in fresh and dry weight, length of shoot and chlorophyll content were observed. Stomatal conductance, transpiration and net photosynthetic rates were generally depressed by Cd stress, despite stomatal frequency values and stomatal pore size remained unchanged. Exposure to Cd severely restricted the starch content and increased soluble sugars.

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Section: Discussionsupporting

confidence: 91%

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Elloumi¹,

Zouari

Chaâri

et al. 2014

Biologia

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“…It is well established that increased ROS levels lead to oxidative stress and, in consequence, to lipid, protein, and nucleic acid damage [15,16]. Accordingly, in Cd-stressed plants, the accumulation of ROS is accompanied by higher lipid peroxidation, measured as an increase in the level of malondialdehyde (MDA) or thiobarbituric acid reactive substances (TBARS) [17][18][19][20]. Moreover, exposure to Cd results in elevated levels of carbonylated proteins, indicating protein oxidation [21][22][23][24][25].…”

Section: Introductionmentioning

confidence: 99%

NADPH oxidase is involved in regulation of gene expression and ROS overproduction in soybean (Glycine max L.) seedlings exposed to cadmium

et al. 2017

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Cadmium-induced oxidative burst is partially mediated by NADPH oxidase. The aim of the present research was to evaluate the role of NADPH oxidase in soybeans’ response to short-term cadmium stress. The application of an NADPH oxidase inhibitor, diphenyleneiodonium chloride (DPI), affected expression of two Cd-inducible genes, encoding DOF1 and MYBZ2 transcription factors. This effect was observed after 3 h of treatment. Interestingly, Cd-dependent increases in NADPH oxidase activity occurred only after a period of time ranging from 6 and 24 h of stress. Stimulation of the enzyme correlated in time with a significant accumulation of reactive oxygen species (ROS). Further analysis revealed that pharmacological inhibition of NADPH oxidase activity during 24 h of Cd stress does not affect Cd uptake, seedling growth, or the level of lipid peroxidation. The role of NADPH oxidase in the response of soybean seedlings to short-term Cd exposure is discussed.

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“…; Ge et al . ). Thus, cytoplasm clearance, supposedly preceding vacuolar cell death, is typical for metal‐stressed plants.…”

Section: Programmed Cell Death In Roots Under Stress Conditionsmentioning

confidence: 97%

The mystery of underground death: cell death in roots during ontogeny and in response to environmental factors

Bagniewska‐Zadworna

Arasimowicz‐Jelonek

2015

Plant Biol J

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Programmed cell death (PCD) is an essential part of the ontogeny of roots and their tolerance/resistance mechanisms, allowing adaptation and growth under adverse conditions. It occurs not only at the cellular and subcellular level, but also at the levels of tissues, organs and even whole plants. This process involves a wide spectrum of mechanisms, from signalling and the expression of specific genes to the degradation of cellular structures. The major goals of this review were to broaden current knowledge about PCD processes in roots, and to identify mechanisms associated with both developmental and stress-associated cell death in roots. Vacuolar cell death, when cell contents are removed by a combination of an autophagy-associated process and the release of hydrolases from a collapsed vacuole, is responsible for programming self-destruction. Regardless of the conditions and factors inducing PCD, its subcellular events usually include the accumulation of autophagosome-like structures, and the formation of massive lytic compartments. In some cases these are followed by the nuclear changes of chromatin condensation and DNA fragmentation. Tonoplast disruption and vacuole implosion occur very rapidly, are irreversible and constitute a definitive step toward cell death in roots. Active cell elimination plays an important role in various biological processes in the life history of plants, leading to controlled cellular death during adaptation to changing environmental conditions, and organ remodelling throughout development and senescence.

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Cadmium-mediated oxidative stress and ultrastructural changes in root cells of poplar cultivars

Cited by 45 publications

References 34 publications

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

Ecophysiological responses of almond (Prunus dulcis) seedlings to cadmium stress

NADPH oxidase is involved in regulation of gene expression and ROS overproduction in soybean (Glycine max L.) seedlings exposed to cadmium

The mystery of underground death: cell death in roots during ontogeny and in response to environmental factors

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