Metal accumulation and damage in rice (cv. Vialone nano) seedlings exposed to cadmium

Rascio, Nicoletta; Vecchia, Francesca Dalla; Rocca, Nicoletta La; Barbato, Roberto; Pagliano, Cristina; Raviolo, Marco; Gonnelli, Cristina; Gabbrielli, R.

doi:10.1016/j.envexpbot.2007.09.002

Cited by 122 publications

(59 citation statements)

References 65 publications

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“…In addition, the inhibition of seed germination was not observed in all five of the peanut cultivars, even in the presence of high concentrations of Cd 2+ (500 μM). This result was similar to the results observed in wheat, barley and rice (Titov et al 1995;Rascio et al 2008).…”

Section: +supporting

confidence: 91%

Effects of Cadmium on Growth, Oxidative Stress and Antioxidant Enzyme Activities in Peanut (Arachis hypogaea L.) Seedlings

Shan¹,

Liu²,

Li³

2012

JAS

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The effects of different cadmium (Cd) concentrations on growth, oxidative stress, and antioxidant enzymes activities in peanut seedlings of five cultivars were investigated in Hoagland's nutrient solution. The results indicated that the growth of seedlings and the maximal photochemical efficiency of Photosystem II were significantly reduced after treatment with 500 μM Cd 2+ for 4 days, but no significant difference was detected when exposed to 10 and 100 μM Cd 2+ , with the exception of FH3 being more sensitive to 100 μM Cd 2+ . The changes in H 2 O 2 and malondialdehyde contents indicated that Cd 2+ stress caused an accumulation of reactive oxygen species and induced oxidative stress when exposed to 100 and 500 μM Cd 2+ . The changes in total soluble protein (TSP) content and antioxidant enzyme activities were similar among the five cultivars. However, in the different concentrations of Cd 2+ , TSP content and antioxidant enzyme activities showed different trends when compared with control groups. Exposure to 100 μM Cd 2+ markedly enhanced activities of four antioxidant enzymes in both shoots and roots of all investigated cultivars. Additionally, cadmium stress had a more severe impact on roots as opposed to shoots of seedlings.

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Section: +supporting

confidence: 91%

Effects of Cadmium on Growth, Oxidative Stress and Antioxidant Enzyme Activities in Peanut (Arachis hypogaea L.) Seedlings

Shan¹,

Liu²,

Li³

2012

JAS

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“…This might be due to the inhibition of absorption and translocation of water (Poschenrieder, Barcelo, 1999). Similar results were presented by other researchers, too (Rascio et al, 2008). Also, the water use efficiency of Cd treated V. fabo plants increased.…”

Section: Discussionsupporting

confidence: 91%

The dynamics of photosynthetic parameters of Phaseolus vulgaris and Vicia fabo under strong cadmium stress

Januškaitienė¹

2014

biologija

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One of the most toxic metals is cadmium, which inputs include those from commercial fertilizers, sewage sludge and other wastes used as soil amendments and also atmospheric deposition. The aim of this experiment was to study the dynamics of photosynthetic parameters of bean (Phaseolus vul garis L.) and broad bean (Vicia fabo L.) under strong cadmium stress effect. Plants were sown in a neutral (pH 6.0-6.5) peat substrate, when 2nd true leaf unfolded, growth substrate was watered with 6 mM concentration CdSO 4 solution. Gas exchange parameters (photosynthetic rate (Pn), transpiration rate (Tn), intercellular CO 2 concentration (Ci) and water use efficiency (WUE)) were measured every day with portable photosynthesis system LI-6400. Content of photosynthetic pigments was analyzed in acetone extract using a spectrophotometer on the last 5th day of the experiment. On the first day of treatment the Pn of Cd treated P. vulgaris plants decreased only by 4.3% and statistically insignificant, while Pn of V. fabo decreased by 35.9% (p < 0.05). Pn of P. vulgaris was decreasing till 3rd day after treatment, when it was 96% (p < 0.05) lower compared to reference treatment. On the contrary, the lowest Pn of Cd treated V. fabo plants was on the first day and it started to increase from the second day till the last one. WUE of Cd treated P. vulgaris was decreasing till the third day too and it improved a little on the last one, but still it was 54% (p < 0.05) lower compared to the re ference. While WUE of V. fabo increased by 23% (p < 0.05) and 16% (p > 0.05) on the first and the last day after Cd treatment, respectively compared to the reference. The changes, detected on the last day of the experiment, of chorophyll a and b ratio were different too, i. e. for P. vulgaris it decreased by 5.7% (p > 0.05), and for V. fabo -increased by 1.4% (p > 0.05) compared to the reference. Also decrease of dry biomass of P. vulgaris was greater than that of V. fabo.

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“…Several heavy metals (e.g., Fe, Mn, Cu, Zn, Ni, and Mo) are required in traces as micronutrients by plants [1][2][3], while others (e.g., Cd, Cr, Hg, and Pb) are known as pollutants [4][5][6][7][8][9][10][11][12]. Major functions of heavy metals in plant metabolism are based on their involvement in oxidation/reduction processes [1,2,13].…”

Section: Heavy Metals: Micronutrients or Pollutants?mentioning

confidence: 99%

Heavy Metals in Crop Plants: Transport and Redistribution Processes on the Whole Plant Level

2015

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Abstract:Copper, zinc, manganese, iron, nickel and molybdenum are essential micronutrients for plants. However, when present in excess they may damage the plant or decrease the quality of harvested plant products. Some other heavy metals such as cadmium, lead or mercury are not needed by plants and represent pollutants. The uptake into the roots, the loading into the xylem, the acropetal transport to the shoot with the transpiration stream and the further redistribution in the phloem are crucial for the distribution in aerial plant parts. This review is focused on long-distance transport of heavy metals via xylem and phloem and on interactions between the two transport systems. Phloem transport is the basis for the redistribution within the shoot and for the accumulation in fruits and seeds. Solutes may be transferred from the xylem to the phloem (e.g., in the small bundles in stems of cereals, in minor leaf veins). Nickel is highly phloem-mobile and directed to expanding plant parts. Zinc and to a lesser degree also cadmium are also mobile in the phloem and accumulate in meristems (root tips, shoot apex, axillary buds). Iron and manganese are characterized by poor phloem mobility and are retained in older leaves.

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Metal accumulation and damage in rice (cv. Vialone nano) seedlings exposed to cadmium

Cited by 122 publications

References 65 publications

Effects of Cadmium on Growth, Oxidative Stress and Antioxidant Enzyme Activities in Peanut (Arachis hypogaea L.) Seedlings

Effects of Cadmium on Growth, Oxidative Stress and Antioxidant Enzyme Activities in Peanut (Arachis hypogaea L.) Seedlings

The dynamics of photosynthetic parameters of Phaseolus vulgaris and Vicia fabo under strong cadmium stress

Heavy Metals in Crop Plants: Transport and Redistribution Processes on the Whole Plant Level

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