Arsenic Behaviour from Groundwater and Soil to Crops: Impacts on Agriculture and Food Safety

Heikens, Alex; Panaullah, G. M.; Meharg, Andrew A.

doi:10.1007/978-0-387-35368-5_3

Cited by 104 publications

(95 citation statements)

References 75 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Irrigation water rich in As also affects crops. Some authors (cited by Heikens et al [19]) found that an As concentration of 0.2 mg L −1 in water causes negative effects on rice, whereas water with 0.6 mg As L −1 affected soybeans [13]. Arbuscular mycorrhizal (AM) fungi are biotrophic fungi located in the soil rhizosphere and the most common soil microorganisms that can establish mutual symbioses with higher plants.…”

Section: Introductionmentioning

confidence: 99%

The Arbuscular Mycorrhiza Rhizophagus intraradices Reduces the Negative Effects of Arsenic on Soybean Plants

Spagnoletti

Lavado

2015

Agronomy

View full text Add to dashboard Cite

Arsenic (As) in soils causes several detrimental effects, including death. Arsenic toxicity in soybean plants (Glycine max L.) has been little studied. Arbuscular mycorrhiza (AM) increase the tolerance of host plants to abiotic stress, like As. We investigated the effects of AM fungi on soybean grown in As-contaminated soils. A pot experiment was carried out in a glasshouse, at random with five replications. We applied three levels of As (0, 25, and 50 mg As kg −1 ), inoculated and non-inoculated with the AM fungus Rhizophagus intraradices (N.C. Schenck & G.S. Sm.) C. Walker & A. Schüßler. Plant parameters and mycorrhizal colonization were measured. Arsenic in the substrate, roots, and leaves was quantified. Arsenic negatively affected the AM percentage of spore germination and hyphal length. As also affected soybean plants negatively: an extreme treatment caused a reduction of more than 77.47% in aerial biomass, 68.19% in plant height, 78.35% in number of leaves, and 44.96% reduction in root length, and delayed the phenological evolution. Mycorrhizal inoculation improved all of these parameters, and decreased plant As accumulation (from 7.8 mg As kg ). AM inoculation showed potential to reduce As toxicity in contaminated areas. The AM fungi decreased As concentration in plants following different ways: dilution effect, less As intake by roots, and improving soybean tolerance to As.

show abstract

Section: Introductionmentioning

confidence: 99%

The Arbuscular Mycorrhiza Rhizophagus intraradices Reduces the Negative Effects of Arsenic on Soybean Plants

Spagnoletti

Lavado

2015

Agronomy

View full text Add to dashboard Cite

show abstract

“…While excess energy intake and a sedentary lifestyle are known risk factors for gaining weight, there has been increasing interest in the effects that environmental chemicals may have on the development of obesity (4) . Food and water provide us with essential nutrients; however, food and water are also sources of exposure to environmental chemicals, including pesticides (5,6) , food packaging and processing-derived contaminants such as bisphenol A (BPA) and phthalates (7)(8)(9)(10)(11)(12)(13)(14)(15) , and naturally occurring contaminants such as arsenic (16,17) . Chemicals detected in the food and water supply include endocrine-disrupting chemicals, a class of chemicals that interfere in some way with the normal functioning of the endocrine system and includes chemicals that may alter hormonal regulation of body weight.…”

mentioning

confidence: 99%

Bisphenol A exposure and associations with obesity among adults: a critical review

Oppeneer

Robien

2014

Public Health Nutr.

View full text Add to dashboard Cite

Objective: To review the literature on bisphenol A (BPA) exposure and obesity in human populations. Design: Systematic review of the literature via searches of PubMed, EMBASE, Web of Science and reference lists for articles published to 1 August 2014. Setting: China, Italy, Japan, Republic of Korea, Sweden, UK, USA. Subjects: Adults (≥18 years). Results: Eighteen articles were identified and included in the review. Twelve studies included secondary evaluations of BPA exposure and BMI, and six studies evaluated body composition as the primary outcome. All analyses were crosssectional and no study included in the review received a positive quality rating (twelve negative, six neutral). Eight studies observed a statistically significant positive association between urinary or serum BPA levels and BMI, and ten studies observed no association. Studies where BMI was a primary outcome and studies of neutral quality were more likely to observe an association. Conclusions: Study results are conflicting and significant methodological issues limit the ability to draw conclusions from these studies. Prospective studies that measure BPA exposure and changes in body weight and composition are needed to establish temporality, causality and the direction of any observed associations.

show abstract

“…Rice grown on As-contaminated paddy soil can accumulate high levels of As, approximately 10-fold larger than other cereals (Lombi et al 2009). Thus, As uptake by rice plants is recognized as a major route of As transfer into food chain which has the potential to become a new disaster for population in Southeast Asia (Heikens et al 2007). Therefore, it is crucial to understand the mechanism of As uptake by rice and to find strategies for reducing As accumulation in grain for enhanced food safety.…”

mentioning

confidence: 99%

Excessive sulfur supply reduces arsenic accumulation in brown rice

Fan¹,

Xia²,

Hu³

et al. 2013

PLANT SOIL ENVIRON

View full text Add to dashboard Cite

Arsenic (As), an extremely toxic metalloid pollutant, is distributed in soil through anthropogenic activities, such as pesticide and herbicide application, mining, or irrigation with contaminated groundwater . Rice grown on As-contaminated paddy soil can accumulate high levels of As, approximately 10-fold larger than other cereals (Lombi et al. 2009). Thus, As uptake by rice plants is recognized as a major route of As transfer into food chain which has the potential to become a new disaster for population in Southeast Asia (Heikens et al. 2007). Therefore, it is crucial to understand the mechanism of As uptake by rice and to find strategies for reducing As accumulation in grain for enhanced food safety.Paddy rice (Oryza sativa L.) oxygenates its rhizosphere, resulting in the formation of an iron oxyhydroxide plaque (Hansel et al. 2001 ABSTRACTThe objective of this study was to investigate the influence of excessive sulfur (S) supply on iron plaque formation and arsenic (As) accumulation in rice plants. A combined soil-sand pot experiment was conducted by using two As levels (0, 20 mg/kg) combined with three S concentrations (0, 60, 120 mg/kg). The results showed that excessive S supply significantly decreased As concentration in brown rice, but As concentration in root increased with increasing rate of S supply. Moreover, bioconcentration factors for leaves and stems were 8-35 fold of that for brown rice, indicating that As was mainly accumulated in rice leaves and stems instead of brown rice. Furthermore, excessive S supply significantly decreased translocation factor of As compared to treatment without S supply. These results indicated that excessive S may reduce As translocation from soils and roots to grain. The mechanism could be ascribed to excessive S that induced the decrease of As availability, the increase of iron plaque formation under As stress, and the increase of glutathione in rice leaves and roots. Therefore, excessive S can reduce As accumulation in brown rice exposed to As contaminated soils though it may result in loss of rice yield.

show abstract

Arsenic Behaviour from Groundwater and Soil to Crops: Impacts on Agriculture and Food Safety

Cited by 104 publications

References 75 publications

The Arbuscular Mycorrhiza Rhizophagus intraradices Reduces the Negative Effects of Arsenic on Soybean Plants

The Arbuscular Mycorrhiza Rhizophagus intraradices Reduces the Negative Effects of Arsenic on Soybean Plants

Bisphenol A exposure and associations with obesity among adults: a critical review

Excessive sulfur supply reduces arsenic accumulation in brown rice

Contact Info

Product

Resources

About