Cadmium-Induced Changes in Chloroplast Lipids and Photosystem Activities in Barley Plants

Vassilev, Andon; Lidon, Fernando C.; Scotti, Paula; Graca, M. Da; Yordanov, Ivan

doi:10.1023/b:biop.0000024295.27419.89

Cited by 96 publications

(58 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…In recent studies, increased lipid peroxidation has been observed in plants under heavy metal stress, such as tomato (Krupa & Baszynski 1985;Quariti et al 1997;Ben Ammar et al 2005), wheat (Malik et al 1992), barley (Vassilev 2004), and mustard (Gaur & Grupa 1994;Nouairi et al 2006). Results of the current study indicate that MDA content substantially increased with all concentrations of Pb +2 contamination.…”

Section: +2supporting

confidence: 58%

Effects of lead (PB) and cadmium (CD) elements on lipid peroxidation, catalase enzyme activity and catalase gene expression profile in tomato plants

AYDIN¹,

BÜYÜK²,

İlker;³

et al. 2016

Tarım Bilimleri Dergisi

View full text Add to dashboard Cite

Heavy metals are significant abiotic stress factor, affecting various response mechanisms in plants. These responses include: changes in membrane composition, production of small molecules and free radicals, and alterations in the activities of antioxidant enzymes and their gene expressions. For this reason, lipid peroxidation levels (MDA), catalase enzyme activity, and gene expression profiles, quantified by real-time PCR, were analyzed in tomato plants exposed to various concentrations (0, 80, 160, 320, 640 and 1280 μM) of Cd 2+ and Pb 2+ . All concentration of Cd +2 or Pb +2 contamination led to increased lipid peroxidation and catalase enzyme activity, except for 320 and 640 μM Cd +2 contamination levels. As a result, gene expression patterns at the mRNA level and changes in MDA content under different concentrations of Pb +2 and Cd +2 contamination revealed a positive correlation, although no correlation was found between gene expression patterns at the mRNA level and catalase enzyme activity. These results might be explained by the regulation of genes at the transcriptional, posttranscriptional, and also translational or posttranslational levels.

show abstract

Section: +2supporting

confidence: 58%

Effects of lead (PB) and cadmium (CD) elements on lipid peroxidation, catalase enzyme activity and catalase gene expression profile in tomato plants

AYDIN¹,

BÜYÜK²,

İlker;³

et al. 2016

Tarım Bilimleri Dergisi

View full text Add to dashboard Cite

show abstract

“…Therefore, the exposure of heavy metals might not affect photosynthesis as quickly as it does growth, as was shown in exposure experiments of Cu and Cr. Cu 2+ can oxidize membrane lipids, resulting in an increased quantity of active oxygen which can break the thylakoid layer structure, thus affecting photosynthesis of the plant [15,16]. The results showed that photosynthesis rates remained at normal levels longer than growth rates did under the stress of Cu 2+ .…”

Section: Comparison Of the Effects On The Growth And Photosynthesismentioning

confidence: 99%

Effects of five heavy metals at sub-lethal concentrations on the growth and photosynthesis of Chlorella vulgaris

Ouyang

Kong

et al. 2012

Chin. Sci. Bull.

View full text Add to dashboard Cite

The impact of sub-lethal concentrations (0.05, 0.5, 5 μmol L −1 ) of the heavy metals copper (Cu), chromium (Cr), zinc (Zn), cadmium (Cd) and lead (Pb) on the growth and photosynthesis of Chlorella vulgaris was studied during 96 h exposure experiments. The results showed that the effects of these five metals on the growth of Chlorella vulgaris were dependent on both concentration and exposure time. It was found that 5 μmol L −1 treatments of Cu, Cr, Zn, Cd and Pb significantly inhibited the growth of Chlorella vulgaris, and the effect became weaker with an increase in exposure duration. Different effects on chlorophyll fluorescence were found for different metals, with Cu and Cr having an inhibiting effect and Zn and Cd having a promoting effect. The effects of heavy metals upon the growth and photosynthesis of Chlorella vulgaris were independent of each other and not causally related.heavy metal, sub-lethal, Chlorella vulgaris, growth, photosynthesis Citation:Ouyang H L, Kong X Z, He W, et al. Effects of five heavy metals at sub-lethal concentrations on the growth and photosynthesis of Chlorella vulgaris.

show abstract

“…For instance, Cd not only inhibits growth (Lunáčková et al 2003, Dong et al 2005), but also brings about changes in various physiological and biochemical characteristics such as water balance, nutrient uptake (Vassilev et al 1997, Dražić et al 2006, Scebba et al 2006) and photosynthetic electron transport around photosystems PS I and PS II (Siedlecka and Baszynski 1993, Skórzyńska-Polit and Baszynski 1995, Vassilev et al 2004. Similarly, Cr inhibits electron transport, reduces CO 2 fixation, chloroplast disorganization (Zeid 2001;Davies et al 2002;Shanker 2003), decreases water potential, increases transpiration rate, reduces diffusive resistance, and causes a reduction in tracheary vessel diameter (Vazques et al 1987).…”

Section: Effect On Plant Physiologymentioning

confidence: 99%

Heavy Metal Toxicity in Plants

Shah

Ahmad

Masood

et al. 2010

Plant Adaptation and Phytoremediation

View full text Add to dashboard Cite

Although many metal elements are essential for the growth of plants in low concentrations, their excessive amounts in soil above threshold values can result in toxicity. This detrimental effect varies with the nature of an element as well as plant species. Heavy metal toxicity in plants depends on the bioavailability of these elements in soil solution, which is a function of pH, organic matter and cation exchange capacity of the soil. Nonessential metals/metalloids such as Hg, Cd, Cr, Pb, As, and Sb are toxic both in their chemically combined or elemental forms, and plants responses to these elements vary across a broad spectrum from tolerance to toxicity. For example, the bioaccumulation of heavy metals in excessive concentrations may replace essential metals in pigments or enzymes disrupting their function and causing oxidative stress. Heavy metal toxicity hinders the growth process of the underground and aboveground plant parts and the activity of the photosynthetic apparatus, which is often correlated with progress in senescence. To avoid the toxicity, plants have developed specific mechanisms by which toxic elements are excluded, retained at root level, or transformed into physiologically tolerant forms. In this chapter, we have discussed the toxic effects of heavy metals on plant growth and their detoxification mechanisms that enable them to tolerate high levels of metals in the soil environment.

show abstract

Cadmium-Induced Changes in Chloroplast Lipids and Photosystem Activities in Barley Plants

Cited by 96 publications

References 22 publications

Effects of lead (PB) and cadmium (CD) elements on lipid peroxidation, catalase enzyme activity and catalase gene expression profile in tomato plants

Effects of lead (PB) and cadmium (CD) elements on lipid peroxidation, catalase enzyme activity and catalase gene expression profile in tomato plants

Effects of five heavy metals at sub-lethal concentrations on the growth and photosynthesis of Chlorella vulgaris

Heavy Metal Toxicity in Plants

Contact Info

Product

Resources

About