Chromium-induced physio-chemical and ultrastructural changes in four cultivars of Brassica napus L.

Gill, Rafaqat Ali; Zang, Lili; Ali, Basharat; Farooq, Muhammad Ahsan; Cui, Peng; Yang, Shuxu; Ali, Shafaqat; Zhou, Weijun

doi:10.1016/j.chemosphere.2014.06.029

Cited by 326 publications

(201 citation statements)

References 51 publications

Supporting

Mentioning

175

Contrasting

Unclassified

Order By: Relevance

“…4c), and higher oxidative damages (Fig. 5) were observed in the sensitive cultivar Zheda 622 than cultivar ZS 758 (tolerant), confirming the earlier reported genotypic difference in metals tolerance between the two cultivars Gill et al 2015). Combined effects of Cd and Cu caused further plant growth inhibition, chlorophyll loss and oxidative stress compared to alone Cd and Cu stress.…”

Section: Plant Growth Chlorophyll Accumulation and Oxidative Stresssupporting

confidence: 82%

See 1 more Smart Citation

Interactive effects of cadmium and copper on metal accumulation, oxidative stress, and mineral composition in Brassica napus

Mwamba

Ali

et al. 2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

Heavy metals' frequent occurrence and toxicity caused considerable concerns in assessing the interactive effects of metals on exposed plants. Therefore, a hydroponic study was conducted to assess the growth response and physio-chemical changes in Brassica napus plants under single and combined stress of two environmentally alarming metals (Cd and Cu). Results showed that 15-day metal exposure to different metal concentrations (0, 50, 200 lM) significantly enhanced Cd accumulation, while lesser extent of Cu was observed in plant tissues. Nonetheless, Cu caused more pronounced oxidative damages and plant growth retardation. Both metals showed similar trend of changes in mineral composition, although Cu proved more damaging effect on K and Mn contents, and Cd on Zn contents. In combined treatments, Cd stimulated Cu uptake, notably at low concentration, while its own uptake was restricted by the presence of Cu. At either level of concentration, combined stress of these metals exacerbated plant growth inhibition and caused further oxidative damages compared to their individual stress. However, metals synergistic effects occurred only in conditions where Cu uptake was enhanced by Cd. A greater synergistic effect was observed in sensitive cultivar Zheda 622 as compared to the tolerant cultivar ZS 758. As to mineral composition, no metals synergistic effects were noted. This study highlighted the ecotoxicological significance of Cd-led Cu uptake in B. napus, which was assumed to drive metals' synergistic toxicity, and showed that the relationship between Cd-led Cu uptake and plant growth responses could vary with respect to cultivar.

show abstract

Section: Plant Growth Chlorophyll Accumulation and Oxidative Stresssupporting

confidence: 82%

“…Zheda 622 and ZS 758) earlier detected as differing in metals tolerance Gill et al 2015) were obtained from the College of Agriculture and Biotechnology, Zhejiang University, and used in this study. Mature seeds were germinated in plastic pots (170 mm 9 220 mm) filled with peat soil.…”

Section: Plant Materials and Growth Conditionsmentioning

confidence: 99%

Interactive effects of cadmium and copper on metal accumulation, oxidative stress, and mineral composition in Brassica napus

Mwamba

Ali

et al. 2016

Int. J. Environ. Sci. Technol.

View full text Add to dashboard Cite

show abstract

“…Soil and ground water contamination due to excessive use of Cr by various anthropogenic activities has become a serious problem for plants and animals over the past few decades (Gill et al 2015, Shanker et al 2005. Cr is a transition element classified into the group VI-B of the periodic table with a ground-state electronic configuration of Ar 3d 5 4s 1 .…”

Section: Introductionmentioning

confidence: 99%

“…This aberration in thylakoid membrane might have some negative impact on photosynthesis and excitation energy transfer imbalance may also occur (Ali et al 2013a). Nevertheless, it is not clear at what concentration Cr induces the ultrastructural changes in chloroplasts and causes the inhibition of photosynthesis (Ali et al 2013a,b;Gill et al 2015).…”

Section: Introductionmentioning

confidence: 99%

Investigation of deleterious effects of chromium phytotoxicity and photosynthesis in wheat plant

2016

View full text Add to dashboard Cite

Increasing human and industrial activities lead to heavy metal pollution. Heavy metal chromium (Cr) is considered to be a serious environmental contaminant for the biota. Phytotoxic effects of Cr were studied in wheat plants. Growth parameters were largely inhibited as a result of disturbances in the plant cell metabolism in response to Cr toxicity. Chromium toxicity led to decline in a number of active reaction centres of PSII, rate of electron transport, and change in PSII heterogeneity. Chromium did not cause any change in heterogeneity of the reducing side. A significant change in antenna size heterogeneity of PSII occurred in response to Cr toxicity. Chromium seems to have extensive effects on the light harvesting complex of PSII.

show abstract

“…Besides the direct interaction of Cr with nucleic acids (e.g., promoting DNA-DNA cross-links), it has also been demonstrated that Cr(VI) may increase the generation of reactive oxygen species (ROS), leading to indirect cytotoxic effects [7][8][9][10]. The correlation of the antioxidant status with genotoxic damage remains a matter of debate.…”

Section: Introductionmentioning

confidence: 99%

Bridging a Gap between Cr(VI)-Induced Oxidative Stress and Genotoxicity in Lettuce Organs after a Long-Term Exposure

Monteiro

Sario

Mendes

et al. 2018

International Journal of Agronomy

View full text Add to dashboard Cite

Chromium (Cr) contamination in arable soils and irrigating water remains a priority, particularly due to the challenges posed to crop production and food safety. Long-term Cr(VI) effects remain less addressed than short-term ones, particularly regarding organspecific genotoxic profiles. Here we used the crop Lactuca sativa growing in a protected horticultural system and irrigated for 21 days with Cr(VI) (up to 200 mg/L). Besides the oxidative stress, the genotoxicity was evaluated. Shoots and roots showed distinctive oxidative stress status and genotoxic effects, in a dose-dependent manner. While 50 mg/L stimulated antioxidant activities and no major genotoxic effects were found, plants exposed to ≥150 showed an increase of oxidative disorders, together with cytostatic and DNA damage effects, and some mitotic impairment. Leaves showed less oxidative signs at 50 mg/L, while at 150/200 mg/L the antioxidant battery was stimulated. In Cr treated plants, the highest dose increased the DNA damage, reinforcing the idea that DNA breaks were related to mitotic disorders in higher doses. In conclusion, long-term exposure data show a highly responsive root, with a quadratic response meaning higher defenses at lower Cr doses, and higher oxidative and DNA damage and cytostatic effect at a higher dose.

show abstract

Chromium-induced physio-chemical and ultrastructural changes in four cultivars of Brassica napus L.

Cited by 326 publications

References 51 publications

Interactive effects of cadmium and copper on metal accumulation, oxidative stress, and mineral composition in Brassica napus

Interactive effects of cadmium and copper on metal accumulation, oxidative stress, and mineral composition in Brassica napus

Investigation of deleterious effects of chromium phytotoxicity and photosynthesis in wheat plant

Bridging a Gap between Cr(VI)-Induced Oxidative Stress and Genotoxicity in Lettuce Organs after a Long-Term Exposure

Contact Info

Product

Resources

About