Lead and cadmium interactions in Cynodon nlemfuensis and sandy soil subjected to treated wastewater application under greenhouse conditions

Madyiwa, Simon; Chimbari, Moses John; Schutte, Frederik

doi:10.1016/j.pce.2004.08.006

Cited by 12 publications

(18 citation statements)

References 8 publications

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“…The higher the salt concentration in the soil, the higher was the negative effect of Pb on Cd accumulation. Along the same findings, Madyiwa et al (2004) reported that the simultaneous presence of Pb and Cd in the soil resulted in an increase in bioavailable soil concentrations of Cd. Salinity can also influence the bioavailability of Cd and Pb in the soil.…”

Section: Pb and CD Accumulation By T Smyrnensismentioning

confidence: 53%

“…Plants accumulated in their roots 4.3 times more than plants from single Pb treatment. On the contrary, Madyiwa et al (2004) found no significant difference in bio-available Pb levels between single and mixed treatments for the same dose of metal, suggesting that Cd did not influence the bio-available level of Pb in soils. Sekhar et al (2005) tested the effect of the presence of other metal ions (such as Cr, Ni, Zn, and Cd) on Pb accumulation by Hemidesmus indicus.…”

Section: Pb and CD Accumulation By T Smyrnensismentioning

confidence: 60%

“…Pb and Cd are known to influence eachothers' uptake by some plants when the two metals are present in the soil in significant amounts. This influence may be beneficial if it reduces the uptake of metal by plants; however, it could be detrimental if it increases uptake of the metal (Madyiwa, Chimbari, and Schutte, 2004).…”

Section: Introductionmentioning

confidence: 99%

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Pb and Cd Accumulation and Phyto-Excretion by Salt Cedar (Tamarix SmyrnensisBunge)

Kaduková

Manousaki

Kalogerakis

2008

International Journal of Phytoremediation

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The accumulation and excretion of lead (Pb) and cadmium (Cd) by salt cedar (Tamarix smyrnensis Bunge) were investigated in this study. Tamarix smyrnensis plants were exposed to the mixtures of Pb and Cd and high salinity for 10 wk. Subsequently, Pb and Cd uptake was quantified in the shoots and roots of the plants by ICP-AES. In addition, physiological parameters such as biomass production, shoot length, plant appearance, and chlorophyll content were examined. The roots accumulated the highest amount of Pb. Salinity was found to not have an important effect on Pb translocation to the leaves. Cd was translocated into the aerial part in a higher portion than Pb. Cd content in leaves of T. smyrnensis increased with the increasing salinity. The visible toxicity symptoms, if present, were connected only to the high salinity. The excretion of Pb and Cd by salt glands was observed and quantified. T. smyrnensis excreted a significant amount of metals on the leaf surface. This characteristic of salt cedar plants can be viewed as a novel phytoremediation process for the remediation of sites contaminated with heavy metals that we have termed "phyto-excretion."

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Section: Pb and CD Accumulation By T Smyrnensismentioning

confidence: 53%

Section: Pb and CD Accumulation By T Smyrnensismentioning

confidence: 60%

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Pb and Cd Accumulation and Phyto-Excretion by Salt Cedar (Tamarix SmyrnensisBunge)

Kaduková

Manousaki

Kalogerakis

2008

International Journal of Phytoremediation

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“…The high soil concentrations of the metals (Table 1) explain their extremely high tissue concentrations, except Cu, in all the plants sampled from the site. The elevated levels of heavy metals in soils is a result of long-term application of sewage sludge, an assertion which is supported by several other researchers (Madyiwa et al, 2004;Mapanda et al, 2005;Katanda et al, 2007;Bergkvistet al, 2003). A survey done by Snyman et al (2004) showed that 61% and 44% of sludges surveyed in South Africa exceeded the limits for Ni and Zn, with 35% exceeding the limits for at least two metals.…”

Section: Discussionmentioning

confidence: 71%

Accumulation of multiple heavy metals in plants grown on soil treated with sewage sludge for more than 50 years presents health risks and an opportunity for phyto-remediation

Mbangi

Muchaonyerwa

Zengeni

2018

WSA

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Long-term application of sewage leads to heavy metal accumulation in soils, causing serious risks to plants, humans, animals and the environment, and phytoremediation could be essential. A study was conducted to determine the concentration of heavy metals in self-seeding vegetables, amaranthus (Amaranthus dubius), tomato (Solanum lycopersicum), black nightshade (Solanum nigrum), Rumex pulcher and turf grass, grown on land treated with sewage sludge for over 50 years. A pot experiment was conducted to determine phytoremediation potential of Indian mustard (Brassica juncea), lucern (Medicago sativa), vetch (Vicia sativa), rape (Brassica napus) and ryegrass (Lolium perenne), using the same soil. Another pot experiment was conducted to determine effects on tissue metal composition of Indian mustard of adding increasing concentrations of EDTA. All the self-seeding vegetables had tissue Zn, Cu, Cr, Ni, Cd and Pb concentrations higher than toxicity thresholds. Turf grass tissue had higher concentrations of all the metals than all the self-seeding vegetables growing on the soil. Indian mustard and rape had the highest biomass and tissue concentration of most of the metals studied. Addition of EDTA to the soil drastically increased uptake of Zn, Cu, Cd and Pb but not Cr and Ni. The findings of this study imply that self-seeding vegetables and turf grass growing on the polluted soils pose serious health risks and that Indian mustard, and to some extent rape, have potential for phytoremediation, especially if grown on the soil treated with EDTA.

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“…On the other hand, Exhibit 1 presented that the combined pollution with Cd and Pb (at the two rates) negatively affected maize growth as compared with each pollution source alone (Pb alone or Cd alone) at all RS treatments. That may be due to the presence of both Pb and Cd in the soil followed in accretion in bioavailability soil concentrations of Cd, which has an inhibitory effect on biomass compared with Cd or Pb alone (Madyiwa, Chimbari, and Schutte (2004). Furthermore, Kadukova, Manousaki, and Kalogerakis (2006) stated that Cd's existence in the soil had a certain impact on the accumulation of Pb by plant roots that hurt plant growth.…”

Section: Resultsmentioning

confidence: 99%

Alleviation of cadmium and lead stress by A‐mycorrhizal fungi and rock phosphate on maize (Zea mays L.) growth under calcareous soil conditions

Seoud

Bakr²

2020

Environmental Quality Mgmt

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This research was carried out to investigate the impact of A‐mycorrhizal fungi (AMF) and rock phosphate (RP) (alone and combined) under polluted soil with lead (Pb) and cadmium (Cd) on maize plant growth and soil nutrients availability under calcareous soil conditions. A greenhouse pot experiment was designed as a two‐factor experiment, remediation sources (RS) as the sub‐main factor with four treatments [control, M (mixed of the two mycorrhizae species, Rhizoglomus irregulare and Rhizoglomus macrocarpium), RP, and M + RP], and soil pollution sources (PS) as the main factor with nine treatments [control, Pb1 (100 mg Pb /kg soil), Pb2 (500 mg Pb/kg soil), Cd1 (6 mg Cd/kg soil), Cd2 (24 mg Cd/kg soil), Pb1 + Cd1, Pb1 + Cd2, Pb2 + Cd1, Pb2 + Cd2]. The results showed that, under the same conditions of this study, we can recommend the use of coapplication of AMF and RP (M + RP) particularly in contaminated soil with Pb and/or Cd, which supports plants to (i) confront the pollution stress, (ii) improve plants growth and their nutrients content, and (iii) increase the soil available nutrients. Also, maize plants could be labeled as the accumulator of Pb based on (translocation factor > 1) as control and under calcareous soil conditions.

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Lead and cadmium interactions in Cynodon nlemfuensis and sandy soil subjected to treated wastewater application under greenhouse conditions

Cited by 12 publications

References 8 publications

Pb and Cd Accumulation and Phyto-Excretion by Salt Cedar (Tamarix SmyrnensisBunge)

Pb and Cd Accumulation and Phyto-Excretion by Salt Cedar (Tamarix SmyrnensisBunge)

Accumulation of multiple heavy metals in plants grown on soil treated with sewage sludge for more than 50 years presents health risks and an opportunity for phyto-remediation

Alleviation of cadmium and lead stress by A‐mycorrhizal fungi and rock phosphate on maize (Zea mays L.) growth under calcareous soil conditions

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