Potentially toxic element contamination in soil and accumulation in maize plants in a smelter area in Kosovo

Nannoni, Francesco; Rossi, Sara; Protano, Giuseppe

doi:10.1007/s11356-016-6411-0

Cited by 26 publications

(10 citation statements)

References 49 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Generally, heavy metal stress usually exerts negative effects on organisms and causes oxidative damage in the cells (Gallego et al, 2012;Nannoni et al, 2016). In the present study, the SOD activity, MDA, soluble protein, GSH, and melanin concentrations in the DSE fungi were evaluated to determine the effects of Cd stress on the antioxidant substances.…”

Section: Discussion Dse Tolerance To CD Stressmentioning

confidence: 97%

Dark Septate Endophytes Improve the Growth and the Tolerance of Medicago sativa and Ammopiptanthus mongolicus Under Cadmium Stress

Hou

Zhao

et al. 2020

Front. Microbiol.

View full text Add to dashboard Cite

Although the ecological function of dark septate endophytes (DSEs) is well studied, little is known about the responses of the host plant to DSEs obtained from other plants, especially under conditions of heavy metal stress. This study aimed to investigate how DSEs from a heavy-metal habitat affect non-host plants in cadmium (Cd) stress soils, which then provides a basis for the application of DSEs in the cultivation of different plant and soil remediation strategies for polluted ecosystems. We isolated and identified two species of DSE (Acrocalymma vagum and Scytalidium lignicola) inhabiting the roots of Ilex chinensis (host plant) which are grown in metal-polluted habitats. Then, the Cd stress tolerance of the DSEs was tested using a pure culture of which the Cd concentration has been adjusted. Subsequently, we examined the performance of non-host plants (Medicago sativa and Ammopiptanthus mongolicus) which were inoculated with DSEs under Cd stress in a growth chamber. The results indicated that the two DSEs could grow under Cd stress in vitro, even when not exhibiting high levels of tolerance to Cd. The superoxide dismutase (SOD), malondialdehyde (MDA), glutathione (GSH), soluble protein, and melanin of the DSE fungi reached maximal levels at concentrations of 30-60 mg Cd/L, indicating the important preventive strategies adopted by the DSE fungi in environments contaminated by Cd. Despite a decreased biomass of DSE hyphae with enhanced Cd concentrations, the accumulation of Cd in the DSE hyphae tended to show an increasing trend. Both DSEs were effective colonizers of the non-host plants. A. vagum and S. lignicola inoculation significantly promoted the biomass and the root architecture of the two non-host plants under Cd stress. A. vagum inoculation increased the total nitrogen (TN) of A. mongolicus, whereas inoculation with S. lignicola significantly increased the organic carbon (OC) of M. sativa. In particular, the DSE inoculation significantly improved the accumulation of Cd in plant tissues under Cd stress, demonstrating a potential application in the bio-remediation of heavy-metalpollution areas. Our findings suggest that the DSE inoculation improved the root growth and nutrient absorption of non-host plants, altered the soil Cd concentration, and facilitated plant growth and survival under Cd stress. These results contribute to a better understanding of DSE-plant interactions in habitats contaminated by heavy metals.

show abstract

Section: Discussion Dse Tolerance To CD Stressmentioning

confidence: 97%

Dark Septate Endophytes Improve the Growth and the Tolerance of Medicago sativa and Ammopiptanthus mongolicus Under Cadmium Stress

Hou

Zhao

et al. 2020

Front. Microbiol.

View full text Add to dashboard Cite

show abstract

“…In particular, soil Cd pollution is always severe in farmland around mining and smelting areas (Li et al 2014). Therefore, plants grown on polluted farmland absorb and accumulate abundant amounts of Cd in the plants (Nannoni et al 2016). How these plants tolerate Cd toxicity has garnered much attention.…”

Section: Introductionmentioning

confidence: 99%

Effects of a root-colonized dark septate endophyte on the glutathione metabolism in maize plants under cadmium stress

Zhan

Ming

et al. 2017

Journal of Plant Interactions

View full text Add to dashboard Cite

A high Cd-tolerant dark septate endophyte (DSE), Exophiala pisciphila, was inoculated into maize (Zea mays L.) roots under Cd stress. The Cd content, enzymes activity and thiol compound content relevant to glutathione (GSH) metabolism in maize leaves were analyzed. The Cd content in maize shoots increased with increasing Cd stress, but the DSE significantly reduced the Cd content at the 40 mg/ kg Cd treatment. Cd stress increased the enzyme activity of glutathione reductase (GR), glutathione S-transferase (GST) and glutathione peroxidase (GSH-Px) as well as the thiol compound contents of sulfur, thiols (-SH) and oxidized glutathione (GSSG). The content of reduced GSH and the GSH/GSSG ratio reached a peak at the 5 mg/kg Cd treatment but then decreased with increasing Cd stress. Furthermore, the DSE significantly enhanced the GR and GSH-Px activity and increased the contents of-SH and GSH under low Cd stress (5 and 10 mg/kg), but decreased the γglutamylcysteine synthetase and GST activity under high Cd stress (20 and 40 mg/kg). Highly positive correlations between the Cd content with enzymes activity and enzymes activity with thiol compound content were observed. Results indicated that DSE played a role in activating GSH metabolism in maize leaves under Cd stress.

show abstract

“…In this study, the pot and field experiments, outdoor investigations, and analyses of literature data indicated (Chisholm 1972, William 1976, Cooperative Group of Agricultural Environment Background Value 1986, Li et al 1989, Fang et al 1991, Xiao et al 1992, Wang 1993, Zhang and Dong 2001, Myung et al 2002, Gulz et al 2005, Liu et al 2005, Li et al 2008, Wang et al 2008, Prabpai et al 2009, Baig et al 2010, Adomako et al 2011, D' Angelo et al 2012, Neidhardt et al 2012, Opaluwa et al 2012, Jin et al 2013, Yang et al 2014, Rosas-Castor et al 2014a,b, Du et al 2015, Wen et al 2016, Nannoni et al 2016, Wu et al 2016, Qiu et al 2017, Lu et al 2017, of which As concentrations of 140 maize grains fell into the range of 0.004-0.35 mg/kg (Figure 4), significantly lower than the food and feed limit values for maize in China (0.50 and 2.0 mg/kg, respectively). Further comparison with the limit values for maize in Switzerland (4.0 mg/kg) (Rosas-Castor et al 2014b) Plant, Soil and Environment, 65, 2019 (9): 425-434 Original Paper https://doi.org/10.17221/155/2019-PSE that grain As of maize was far below the acceptable limit in China, and thus, maize could be recommended for planting in As-contaminated farmlands.…”

Section: Discussionmentioning

confidence: 99%

Is maize suitable for substitution planting in arsenic-contaminated farmlands?

Cao¹,

Bai²,

Zeng³

et al. 2019

Plant Soil Environ.

View full text Add to dashboard Cite

The efficacy of using maize (Zea mays L.) as a suitable substitute for other crops with high arsenic (As) accumulation in As-contaminated farmlands remains debated. Here, the As uptake capacity and the stability of accumulated As of different maize cultivars were studied using pot and field experiments, outdoor investigations and literature data analysis. When the total and available soil As levels were 238.8 and 8.1 mg/kg, respectively, grain As ranged from 0.03 to 0.07 mg/kg, significantly lower than the acceptable As limit (0.5 mg/kg) for maize in China. The results of field investigations and literature data analysis also supported this observation. Maize is a crop with low grain As, thus, making it suitable for substitution planting in As-contaminated farmlands. Further, grain As concentration varied among different maize cultivars. The planting of normal and waxy maize is prioritized over the sweet maize as the first one has lower available bio-concentration factor (aBCF) of 0.007 for grain and higher accumulated As stability among its cultivars (CV < 10%) than those for sweet maize (aBCF = 0.01 and CV = 35.5%). Arsenic compartmentalization in the roots and low As upward migration into the grain were responsible for the low grain As of maize.

show abstract

Potentially toxic element contamination in soil and accumulation in maize plants in a smelter area in Kosovo

Cited by 26 publications

References 49 publications

Dark Septate Endophytes Improve the Growth and the Tolerance of Medicago sativa and Ammopiptanthus mongolicus Under Cadmium Stress

Dark Septate Endophytes Improve the Growth and the Tolerance of Medicago sativa and Ammopiptanthus mongolicus Under Cadmium Stress

Effects of a root-colonized dark septate endophyte on the glutathione metabolism in maize plants under cadmium stress

Is maize suitable for substitution planting in arsenic-contaminated farmlands?

Contact Info

Product

Resources

About