Metal availability and uptake by sorghum plants grown in soils amended with sludge from different treatments

Mendoza, Jorge; Garrido, Tatiana; Castillo, G. F. Torres del; Martin, Nilsa San

doi:10.1016/j.chemosphere.2006.05.012

Cited by 68 publications

(31 citation statements)

References 24 publications

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“…In the past decade, there have been only a few studies dealing with the interactive effects of a combination of heavy metals on plants (Yang et al 2004), which have prompted the development of bioremediation (Arora and Sharma 2009) and phytoremediation (Mendoza et al 2006) strategies. Although phenotypic, physiological and biochemical analyses have been executed in different plant species and genotypes to explore the Cu stress response (Kasim 2006), Cu-induced alterations at the protein level have been overlooked.…”

Section: Introductionmentioning

confidence: 99%

Leaf proteome characterization in the context of physiological and morphological changes in response to copper stress in sorghum

et al. 2016

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Copper (Cu) is an essential micronutrient required for normal growth and development of plants; however, at elevated concentrations in soil, copper is also generally considered to be one of the most toxic metals to plant cells due to its inhibitory effects against many physiological and biochemical processes. In spite of its potential physiological and economical significance, molecular mechanisms under Cu stress has so far been grossly overlooked in sorghum. To explore the molecular alterations that occur in response to copper stress, the present study was performed in ten-day-old Cu-exposed leaves of sorghum seedlings. The growth characteristics were markedly inhibited, and ionic alterations were prominently observed in the leaves when the seedlings were exposed to different concentrations (0, 100, and 150 µM) of CuSO4. Using two-dimensional gels with silver staining, 643 differentially expressed protein spots (≥1.5-fold) were identified as either significantly increased or reduced in abundance. Of these spots, a total of 24 protein spots (≥1.5-fold) from Cu-exposed sorghum leaves were successfully analyzed by MALDI-TOF-TOF mass spectrometry. Of the 24 differentially expressed proteins from Cu-exposed sorghum leaves, 13 proteins were up-regulated, and 11 proteins were down-regulated. The abundance of most identified protein species, which function in carbohydrate metabolism, stress defense and protein translation, was significantly enhanced, while that of another protein species involved in energy metabolism, photosynthesis and growth and development were severely reduced. The resulting differences in protein expression patterns together with related morpho-physiological processes suggested that these results could help to elucidate plant adaptation to Cu stress and provide insights into the molecular mechanisms of Cu responses in C4 plants.

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Section: Introductionmentioning

confidence: 99%

Leaf proteome characterization in the context of physiological and morphological changes in response to copper stress in sorghum

et al. 2016

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“…However, some researchers found high contents of the elements in plants grown on contaminated soils (O'Neill 1990). Mendoza et al (2006) found high contents of Ni and Cu in shoots of sorghum which is grown in soil amended with sewage sludge.…”

Section: Uptake Of Heavy Metals By Sorghum Grainsmentioning

confidence: 95%

Effect of liming on the distribution of heavy metals in untreated industrial sewage sludge produced in Pakistan for the cultivation of Sorghum bicolor (L.)

et al. 2007

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The recycling of sewage sludge on agriculture land represents an alternative, advantageous, disposal of this waste material. The aim of the present study was to evaluate the feasibility of using industrial sewage sludge, produced in Pakistan, as a fertiliser. Agricultural soil amended with 25% (w/w) sewage sludge with or without lime treatment was used for growing a variety of sorghum (PARC-SS-1). The mobility of the heavy metals (HMs) (Cd, Cu, Cr, Ni, Pb and Zn) and metalloid (As) in the untreated industrial waste water sewage sludge (UIWS) samples were assessed by applying a modified BCR (Community Bureau of Reference) sequential extraction procedure. The single extraction procedure comprised of the application of mild extractant (CaCl 2 ) and water for the estimation of the proportion of easily soluble metal fractions. The precision and accuracy of BCR was evaluated by using a certified reference material of soil amended with sewage sludge BCR 483. The plant available metal contents, as extracted by the deionised water and 0.01 M CaCl 2 solution and exchangeable fraction of BCR sequential, decreased with lime application in the range of 10-44% for As, Cr, Ni, Pb and Zn, except in the cases of Cd and Cu, where their mobility was increased by 10% and 24%, respectively. Sludge amendment enhanced the dry weight yield of sorghum and the increase was more obvious after liming up to 25%. The uptake of HMs were lower in test samples (3.2-21.8%), except for Cu and Cd, which was higher (4%), while they were below the permissible limit of these metals. The present experiment demonstrates that liming was important in factors facilitating the growth of sorghum in sludge-amended soil.

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“…The contents obtained for As, Cr, Ni, and Pb are generally lower that what reported in other researches (O'Neill 1990). Mendoza et al (2006), for example, found much more Ni and Cu in shoots of sorghum cropped in sewage sludge amended soils.…”

Section: Total Trace and Potentially Toxic Metals In Sorghum Grainmentioning

confidence: 99%

The feasibility of using an industrial sewage sludge produce in Pakistan as agricultural fertilizer used for cultivation ofSorghum bicolorL

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et al. 2007

Archives of Agronomy and Soil Science

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In the present study we evaluate the feasibility of using untreated industrial sewage sludge by liming before use as a fertilizer, produced in Pakistan. In a pots experiment, limed industrial sewage sludge (LSW) and non-limed sewage sludge (NLSW), were amended with soil separately and grown sorghum. After maturity, the sorghum grains were analysed for total contents of potentially toxic metals (TPTM), As, Cd, Cr, Cu, Ni, Pb and Zn. The proportion of different mobility fractions of each element in LWS and NLSW, a modified BCR sequential extraction procedure (Community Bureau of Reference) and single extractions with mild extractants (deionized water and CaCl 2 ) were used. In LSW, the availability of most of the elements under study was reduced, probably due to the increased pH of soil, while this was the reverse in the cases of Cd and Cu, their mobility was slightly increased by lime-treated sludge. The sorghum grains grown in LSW have low level As, Cr, Ni, Pb and Zn as compared to grains grown in NLSW, except Cu and Cd, which, however, never exceeded legal limits. Thus the research showed that liming, by augmenting soil alkalinity, allows a safe agricultural use even of industrial sludge, which is environmentally hazardous for its great content of heavy metals.

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Metal availability and uptake by sorghum plants grown in soils amended with sludge from different treatments

Cited by 68 publications

References 24 publications

Leaf proteome characterization in the context of physiological and morphological changes in response to copper stress in sorghum

Leaf proteome characterization in the context of physiological and morphological changes in response to copper stress in sorghum

Effect of liming on the distribution of heavy metals in untreated industrial sewage sludge produced in Pakistan for the cultivation of Sorghum bicolor (L.)

The feasibility of using an industrial sewage sludge produce in Pakistan as agricultural fertilizer used for cultivation ofSorghum bicolorL

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