Evaluation of toxic potential of metals in wheat crop grown in wastewater-contaminated soil in Punjab, Pakistan

Khan, Zafar Iqbal; Ahmad, Kafeel; Batool, Fauzia; Wajid, Kinza; Mehmood, Naunain; Ashfaq, Asma; Bashir, Humayun; Nadeem, Muhammad; Ullah, Saif

doi:10.1007/s11356-019-05715-9

Cited by 15 publications

(3 citation statements)

References 22 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Therefore, root tips play a vital role in ensuring the normal growth of plants under different environmental conditions. However, root tips are significantly affected by drought stress [36,37]. Therefore, our results on the development of root tips under drought are consistent with previous studies.…”

Section: Discussionsupporting

confidence: 93%

Involvement of the ABA- and H2O2-Mediated Ascorbate–Glutathione Cycle in the Drought Stress Responses of Wheat Roots

Li,

Gao,

Jiang

et al. 2024

Phyton

View full text Add to dashboard Cite

Abscisic acid (ABA), hydrogen peroxide (H 2 O 2 ) and ascorbate (AsA)-glutathione (GSH) cycle are widely known for their participation in various stresses. However, the relationship between ABA and H 2 O 2 levels and the AsA-GSH cycle under drought stress in wheat has not been studied. In this study, a hydroponic experiment was conducted in wheat seedlings subjected to 15% polyethylene glycol (PEG) 6000-induced dehydration. Drought stress caused the rapid accumulation of endogenous ABA and H 2 O 2 and significantly decreased the number of root tips compared with the control. The application of ABA significantly increased the number of root tips, whereas the application of H 2 O 2 markedly reduced the number of root tips, compared with that under 15% PEG-6000. In addition, drought stress markedly increased the DHA, GSH and GSSG levels, but decreased the AsA levels, AsA/DHA and GSH/GSSG ratios compared with those in the control. The activities of the four enzymes in the AsA-GSH cycle were also markedly increased under drought stress, including glutathione reductase (GR), ascorbate peroxidase (APX), monodehydroascorbate reductase (MDHAR) and dehydroascorbate reductase (DHAR), compared with those in the control. However, the application of an ABA inhibitor significantly inhibited GR, DHAR and APX activities, whereas the application of an H 2 O 2 inhibitor significantly inhibited DHAR and MDHAR activities. Furthermore, the application of ABA inhibitor significantly promoted the increases of H 2 O 2 and the application of H 2 O 2 inhibitor significantly blocked the increases of ABA, compared with those under 15% PEG-6000. Taken together, the results indicated that ABA and H 2 O 2 probably interact under drought stress in wheat; and both of them can mediate drought stress by modulating the enzymes in AsA-GSH cycle, where ABA acts as the main regulator of GR, DHAR, and APX activities, and H 2 O 2 acts as the main regulator of DHAR and MDHAR activities.

show abstract

Section: Discussionsupporting

confidence: 93%

Involvement of the ABA- and H2O2-Mediated Ascorbate–Glutathione Cycle in the Drought Stress Responses of Wheat Roots

Li,

Gao,

Jiang

et al. 2024

Phyton

View full text Add to dashboard Cite

show abstract

“…Higher values were observed for T. alaxandrium and lower for Z. mays for Zn and for Pb high for Z. mays and low for S. bicolor. Daily intake of metal The value of Zn was lower than tolerable daily intake 60 [21,22,25,37,38]. Higher value of intake was observed for T. alaxandrium and lower for Z. mays For Pb was determined by using formula of Sajjad et al [24].…”

Section: Bioconcentration Factormentioning

confidence: 99%

Assessment of Zn and Pb in buffaloes fed on forages irrigated with wastewater in Sahiwal, Sargodha, Pakistan

Nadeem¹

2020

PAB

Self Cite

View full text Add to dashboard Cite

This study was designed to find the Pb and Zn concentration in forages, soil and blood samples that were taken from polluted sites. Sampling was performed in two seasons from five sites in tehsil Sahiwal. Atomic Absorption Spectrophotometer (AAS) was used for estimation of metal concentration. The samples at site-V had higher values as compared to other sites. Zn was found lower in blood while higher in soil and forages while lead had positive and non-significant correlation in soil, forage and blood due to its accumulation in lower concentration. The value for pollution load index was lower than standard value for both metals. Transfer had lower values indicated that antagonistic effect of metals present in soil or the crops are resistant to metals. Daily intake of both metals had lower values. Health risk index values were higher for both metals than the standard value which indicates that both these metals are not good for animals grazing on sampling sites. EF values for both metals were in order of Pb>Zn but lower than standard. The result from present study showed that there is increase in the concentration of metal at sampling sites due to waste water irrigation.

show abstract

“…Such solid and liquid waste disposals cause either groundwater contamination through seepage, or could lead to streams, rivers, and ultimately in nearby seas through runoff process (Shah, 2014). Samples of effluent collected from textile, dyeing, calendaring, steel industry, hospitals and clinical laboratories, foundries and tanneries in Punjab, Pakistan were found with excessive amount of soluble salts, i.e., nitrogen (N), phosphorous (P), potassium (K) and heavy metals, i.e., cadmium, chromium, cobalt, copper, iron, manganese, nickel, and zinc, to name a few (Murtaza et al, 2010;Khan et al, 2019). The infiltration of rainfall and intervening running water channels through dump-yards cause chemical mixing the waste products which produces leachate.…”

Section: Introductionmentioning

confidence: 99%

Ground Water Quality Assessment in Industrial Zones of Central Punjab, Pakistan

Hassan

2022

PJS

View full text Add to dashboard Cite

Solid and liquid waste generation has increased tremendously in this era of industrialization. A large amount of domestic and industrial waste is disposed off without segregation practices. Inadequate waste management practices and lack of technologies endure contamination of ground water table, surface water resources and water supply infrastructure. The heavy metals and microbial byproducts present in leachates which deteriorate ground water quality and consequent health effects are prevalent and ever-increasing in industrial urban areas of Pakistan. The current study assesses the effects of leachate on water from open dumping sites of two cities (Gujranwala and Sialkot) during pre- and post-rain season. We have collected and analyzed ground water samples for the assessment of metals and compared with global and national quality standards. It was found that most of the pre-rain samples had pH value near to or higher than WHO/NEQS standards in both cities, while TDS, EC, hardness, nitrate, sulfates, chlorides and phosphates concentrations were found to be within WHO/NEQS permissible standards. The heavy metals (Zn, Fe, Cu, Cr, Ni, Cd, Co and Pb) were detected in higher concentration than NEQS/WHO standards, which was an indication of detrimental effects on ground water quality. It has been detected that all parameters had significantly increased and the concentration of most of the metals were above WHO standards in post rainfall season,. Increase in concentration of heavy metals especially, Cd, Zn, Fe, Cr, Cu, and Ni was the indication of deleterious effects on ground water quality originated from dumping sites. Hence it is deduced from the study that continuous disposal off all categories of solid waste in open dump sites could not only result in degradation of water quality but such a higher level of contamination could have damaging effects on human health and other organisms.

show abstract

Evaluation of toxic potential of metals in wheat crop grown in wastewater-contaminated soil in Punjab, Pakistan

Cited by 15 publications

References 22 publications

Involvement of the ABA- and H<sub>2</sub>O<sub>2</sub>-Mediated Ascorbate–Glutathione Cycle in the Drought Stress Responses of Wheat Roots

Involvement of the ABA- and H<sub>2</sub>O<sub>2</sub>-Mediated Ascorbate–Glutathione Cycle in the Drought Stress Responses of Wheat Roots

Assessment of Zn and Pb in buffaloes fed on forages irrigated with wastewater in Sahiwal, Sargodha, Pakistan

Ground Water Quality Assessment in Industrial Zones of Central Punjab, Pakistan

Contact Info

Product

Resources

About