Plant bioassays to assess toxicity of textile sludge compost

Araújo, Ademir Sérgio Ferreira de; Monteiro, Regina Teresa Rosim

doi:10.1590/s0103-90162005000300013

Cited by 115 publications

(52 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…Morera et al (2002) also reported a reduction in the HM toxicity due to adsorption of HMs by additional sources of OM and humic substances in sludge. Araùjo & Monteiro (2005) showed that seed coats constitute a barrier between the embryo and its immediate environment. According to these authors, the metals occurring in the substrate could be adsorbed by the seed coat, which would thus not affect the growth of the embryonic root.…”

Section: Discussionmentioning

confidence: 99%

Effects of sewage sludge on bio-accumulation of heavy metals in tomato seedlings

et al. 2017

View full text Add to dashboard Cite

The proposal to use sewage sludge (SS) on agricultural fields as a sustainable way to dispose of the waste is based on its high organic and nutrients content. However, the presence of heavy metals (HMs) in sludge can contaminate crops and accumulate in the food chain. The aim of this study was to assess changes in soil fertility, biochemical responses of tomato (Solanum lycopersicum L. cv. Rio Grande) seedlings and the availability of HMs with increased rate application of SS (0, 2.5, 5 and 7.5%). Leaf chlorophyll content, nutritional status, proline, membrane peroxidation, stomatal conductance and HM accumulation were investigated. Results showed that the soil pH decreased, whereas soil salinity, organic carbon, total N, available P and exchangeable Na, Ca, K and HM content increased significantly with increasing application rates of SS. Among the three HMs (Zn, Cu and Cr), Zn had the highest capacity for transferring from soil into plants. Low metal translocation was observed from roots to leaves. The 7.5% SS dose decreased biomass production and caused a decline in chlorophyll content and stomatal conductance. However, lipid peroxidation and proline contents increased. Therefore, the use of 2.5 and 5% doses of sewage sludge in agriculture would be an efficient and costeffective method to restore the fertility of soil and an environment-friendly solution for disposal problems.Additional key words: sewage sludge amendment; soil fertility; biochemical responses; Solanum lycopersicum.

show abstract

Section: Discussionmentioning

confidence: 99%

Effects of sewage sludge on bio-accumulation of heavy metals in tomato seedlings

et al. 2017

View full text Add to dashboard Cite

show abstract

“…They found that roots were inhibited by 70%, while shoots were reduced only by 50% in the presence of Zn.The inhibition of roots and shoots elongation caused by heavy metals can be due to their influence on cell division (Davies et al, 1991;Hargemeyer, Breckle, 1996), or their effect on cell wall elasticity and metabolic activities (Naseer et al, 2001). As we know, roots are the first part of the plant that comes in touch with contamination, they are more sensitive to toxicity by metals than shoots (Araujo, Monteiro, 2005;Shah et al, 2010;Yang et al, 2010;Yusuf et al, 2011). This sensibility reduced per consequence of the root/shoot ratio.…”

Section: Discussionmentioning

confidence: 99%

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

Rasafi

Nouri

Bouda

et al. 2016

Ekológia (Bratislava)

View full text Add to dashboard Cite

El Rasafi T., Nouri M., Bouda S., Haddioui A.: The effect of Cd, Zn and Fe on seed germination and early seedling growth of wheat and bean. Ekológia (Bratislava), Vol. 35, No. 3, p. 213-223, 2016. This study was conducted to evaluate the effect of metals on wheat and bean species. The method uses seed germination and early seedling growth of these plants in the presence of various levels (10, 50, 100, 250, 500, 750 and 1000 mg/L) of Cadmium (Cd), Iron (Fe) and Zinc (Zn). The inhibition caused by these metals was depending on the concentration used, the metal itself and the plant species. The species had reduced seed germination, root and shoot lengths, tolerance index and percentphyto-toxicity with increasing concentrations of metals. Cadmium was determined to be the most inhibitory metal on these parameters. This metal affected significantly the germination, root and shoot length of the species tested, as well as the tolerance index and percentphytotoxicity starting from 50 mg Cd/l. Under the Iron stress, in general, the inhibition of germination and root length of wheat was reduced from 500 mg Fe/l. The results showed also that the inhibitory effect of increase of Zn levels was seen in root, shoot and tolerance indices. The findings also revealed that the metal toxicity was as follow: Cd > Fe > Zn. Regarding species, the results showed that bean seemed to be more tolerant to the increase of the three metals than wheat.

show abstract

“…According to Seregin and Kozhevnikova, (2005), seed germination is the most resistant process to heavy metals; this resistance was due to weak penetration through the seed coat of heavy metals. The seed coat can be a barrier between the embryo and the environment in the immediate vecinity (Araùjo and Monteiro, 2005); it protects the embryo against the heavy metals toxicity, isolated embryo were more sensitive to heavy metals than seeds intact (Li et al, 2005).…”

Section: Effect Of Zinc On the Germinationmentioning

confidence: 99%

The Influence Of Zinc On Seed Germination And Growth In The First Ontogenetic Stages In The Species Cucumis Melo L.

Stratu¹,

Costica²

2015

Present Environment and Sustainable Development

View full text Add to dashboard Cite

Abstract. The paper presents the results of a study regarding the influence of treatment with zinc in different concentrations (50 mg∕l, 100 mg∕l, 200 mg ∕l, 300mg/l, 400 mg ∕l, 500 mg/l, 600 mg ∕l) on seed germination and growth in early ontogenetic stages of Cucumis melo L. We analyzed the following indicators: the percentage of germinated seeds; the length of root, the length of the hypocotyl and the length of the seedling; the number of the laterale roots; the tolerance index and the seedling vigor index. The results underline the specific variations of analysed indicators, depending on the concentrations used for the treatments of seeds. The concentrations used for treatment do not influence negatively the seed germination, but affected the seedling growth (especially the root elongation), the formation and growth process of lateral roots and the seedling vigour index. The delay effect of growth process is very pronounced in the case of high concentration. IntroductionThe heavy metals come from natural sources and from anthropogenic sources. In certain concentration, the heavy metals become pollutants with toxic potentially; they persist a long time in the environment because of their reduced mobility and can transferred along food chains. Environmental pollution with heavy metals presents a risk for plants, animals and for man. Some heavy metals (zinc, copper, etc) are important for the life of plants; other heavy metals (lead, cadmium, etc) do not have a biological role.

show abstract

Plant bioassays to assess toxicity of textile sludge compost

Cited by 115 publications

References 20 publications

Effects of sewage sludge on bio-accumulation of heavy metals in tomato seedlings

Effects of sewage sludge on bio-accumulation of heavy metals in tomato seedlings

The Effect of Cd, Zn and Fe on Seed Germination and Early Seedling Growth of Wheat and Bean

The Influence Of Zinc On Seed Germination And Growth In The First Ontogenetic Stages In The Species Cucumis Melo L.

Contact Info

Product

Resources

About