Assessment of biomarkers of cadmium stress in lettuce

Monteiro, Marta S.; Santos, Conceição; Soares, Amadeu M.V.M.; Mann, Reinier M.

doi:10.1016/j.ecoenv.2008.08.002

Cited by 139 publications

(71 citation statements)

References 39 publications

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“…Pea seedlings exposed to high Cd 2+ and Cu 2+ showed drastic decrease of chlorophyll a and chlorophyll b (Hattab et al 2009). Reduction of chlorophylls a and b in lettuce exposed to Cd 2+ contamination has also observed (Monteiro et al 2009). Copper was reported to modify the physiological processes related with chlorophyll degradation due to the peroxidation of chloroplast membranes (Baszynski et al 1988;Hattab et al 2009).…”

Section: +mentioning

confidence: 92%

“…Copper was reported to modify the physiological processes related with chlorophyll degradation due to the peroxidation of chloroplast membranes (Baszynski et al 1988;Hattab et al 2009). Cd 2+ may substitute Mg 2+ in the chlorophyll molecule, which might account for the decrease of chlorophylls a and b (Monteiro et al 2009). …”

Section: +mentioning

confidence: 99%

“…Since cereals, potatoes and vegetables account for 70% of the dietary intake (Grawe, 1996), and Cd is reported to have high mobility from soil to plants (Jansson, 2002;Liu et al 2007), the metal has been the subject of increasing interest of study (Yujing et al 2008). Understanding the factors related with the uptake of heavy metals by plants, the resultant stress response, and thus the damage caused to the physiological functioning of plants, have been suggested to be critical to the long-term safety and conservation of agricultural resources and ecosystems (Monteiro et al 2009). Consideration of the level of uptake, translocation, and accumulation of toxic metals in different plant parts is of significance, as it has been suggested that plants might react as the first line of defense against toxicity by reducing metal concentration in active organs or cells through selective exclusion during uptake, excretion, or retention in the roots (Wu et al 2005).…”

Section: Introductionmentioning

confidence: 99%

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Effects of heavy metals toxicity on the biochemical response in tomato plants grown in contaminated silt-soil

Saeed

Sohail

Rashi

et al. 2014

Bangladesh J. Sci. Ind. Res.

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Toxic effects of Cu 2+ , Zn 2+ and Cd 2+ in tomato plants were the reduction in vegetative growth of seedlings and also in flowering and fruiting. Toxicity of these heavy metals resulted in a reduction in chlorophyll a, chlorophyll b and soluble sugars, but in an increase in proline. Toxic metal stress caused a 71.71, 77.70 and 11.90% increase in the activities of peroxidase, catalase and ascorbic acid oxidase, respectively. With respect to the total uptake of Cd 2+ , the biggest sink for the metal was provided by roots with 72.80% retention followed by 22% in the stem. Accumulation of Cd 2+ and Zn 2+ gradually increased in the order of root, stem and leaves, but for Cu 2+ that was reversed, that is, it increased in the order of leaf, stem and root. A new consideration of metals bioavailability is discussed in terms of their respective solubility product constants, pH of precipitation, and metal complexation.

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Section: +mentioning

confidence: 92%

Section: +mentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Effects of heavy metals toxicity on the biochemical response in tomato plants grown in contaminated silt-soil

Saeed

Sohail

Rashi

et al. 2014

Bangladesh J. Sci. Ind. Res.

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“…These interactions between Cd and other essential nutrients may lead to physiological disarrays as well as a reduction in growth (ElBeltagi et al, 2010). Cadmium exposure significantly affected essential ions in roots and shoots has been explored in rice (Liu et al, 2003), wheat , barley (Wu and Zhang, 2002) and lettuce (Monteiro et al, 2009). These mineral nutrients also have specific of defensive role against lethal effects of Cd (Khan et al, 2007).…”

Section: Introductionmentioning

confidence: 99%

Alleviating Effect of Exogenous Application of Ascorbic Acid on Growth and Mineral Nutrients in Cadmium Stressed Barley (Hordeum vulgare) Seedlings

Ullah¹,

Javed²,

Wahid³

et al. 2015

IJAB

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An experiment was carried out in sand-filled pots under normal temperature (28±2ºC) to assess the role of exogenously applied ascorbic acid in alleviating the effect of cadmium (Cd) stress on four barley (Hordeum vulgare L.) genotypes (Jau-83, Jau-87, Paidar 91 and Haider 93). After germination, seedlings were exposed to different Cd concentrations (0, 100, 300, 500 and 700 µM CdCl2) along with AsA (200 mg L -1 ) and grown for 15 days. The results suggested that exposure to increased Cd levels caused a significant reduction in growth and mineral nutrients contents of barley seedlings. However, there was a noticeable difference in the effect of Cd on mineral concentrations among genotypes and the difference mainly coincided with differential accumulation of Cd in the shoot and root tissues. When AsA was applied to Cd-stressed plants, it decreased Cd accumulation in shoots and roots and also showed partial reversal of Cd stress effects. It was also observed that at the same Cd concentrations Cd tolerance index of Jau-83 was the highest among the four barley genotypes, indicating that Jau-83 had lower Cd contents in roots may be more tolerant to Cd stress. The application of AsA was effective in reducing the toxicity of increased Cd by reducing the root or shoots Cd contents, as well as by improving the seedling growth attributes and the mineral nutrients in barley.

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“…Based on the above results, Cd toxicity also brings about oxidative stress since the balance between ROS generation and removal was broken. Heavy metals, including Cd, are associated with oxidative stress, plant damage and changes of metabolism (nutrient uptake, contents of pigment, protein, chlorophyll synthesis, the profiles concentration or activity of isozymes) and enzyme concentration to stress metabolism (Clemens 2006, Ghani and Wahid 2007, Monteiro et al 2009). Metabolic reactions are all possible strategies for adaptation of plants to metal stress.…”

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confidence: 99%

Effects of cadmium on growth and antioxidant responses in Glycyrrhiza uralensis seedlings

Zheng¹,

Lv²,

Gao³

et al. 2010

Plant Soil Environ.

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In the present study, Glycyrrhiza uralensis (Leguminosae) seeds were germinated and grown with different concentrations (0, 0.05, 0.1, 0.2 and 0.4 mmol/l) of cadmium acetate, in order to investigate the effects of cadmium on the growth, uptake, superoxide dismutase (SOD), peroxidase (POD), catalase (CAT), polyphenol oxidase (PPO) and phenylalanine ammonia-lyase (PAL) activities in Glycyrrhiza uralensis seedlings. Uptake of Cd in different tissues of seedlings increased with increasing Cd concentrations in the tested medium, with most accumulation in the radicles. Results suggested that increased cadmium concentrations lead to decreased shoot elongation and seedling biomass. SOD activity in the cotyledons, hypocotyls and radicles increased gradually up to 0.2, 0.1 and 0.4 mmol/l, respectively. POD activity in the cotyledons, hypocotyls and radicles concentrations increased continuously with rising cadmium concentrations up to 0.2, 0.1 and 0.1 mmol/l, respectively. CAT activity in the cotyledons, hypocotyls and radicles increased gradually with increasing cadmium concentrations up to 0.2, 0.2 and 0.1 mmol/l, respectively. PPO activity showed significant increases in the cotyledons, hypocotyls and radicles at 0.4, 0.1 and 0.2 mmol/l cadmium, respectively. A significant change of PAL activity in the cotyledons, hypocotyls and radicles was observed with increasing cadmium concentrations up to 0.2, 0.4 and 0.2 mmol/l, respectively. Results of POD isoenzymes suggested that the staining intensities of isoform patterns were consistent with the changes of the activities assayed in solutions. These results suggested that Glycyrrhiza uralensis seedlings may have a better protection against oxidative stress by increasing antioxidant enzymes and PAL activity exposed to cadmium toxicity.

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Assessment of biomarkers of cadmium stress in lettuce

Cited by 139 publications

References 39 publications

Effects of heavy metals toxicity on the biochemical response in tomato plants grown in contaminated silt-soil

Effects of heavy metals toxicity on the biochemical response in tomato plants grown in contaminated silt-soil

Alleviating Effect of Exogenous Application of Ascorbic Acid on Growth and Mineral Nutrients in Cadmium Stressed Barley (Hordeum vulgare) Seedlings

Effects of cadmium on growth and antioxidant responses in Glycyrrhiza uralensis seedlings

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