Arsenic exposure from food exceeds that from drinking water in endemic area of Bihar, India

Mondal, Debapriya; Rahman, Mohammad Mahmudur; Suman, S.; Sharma, P.K.; Siddique, Abu; Rahman, Md. Aminur; Bari, Abdul; Kumar, Ranjit; Bose, N; Singh, Shatrunjay Kumar; Ghosh, Ashok; Polya, David A.

doi:10.1016/j.scitotenv.2020.142082

Cited by 47 publications

(15 citation statements)

References 39 publications

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“…Metals such as arsenic, cadmium, chromium, lead and mercury are commonly occurring metals, and rank among the priority metals of public-health risk. Among these, arsenic contamination in drinking water and food crops, especially in rice, is a growing concern, particularly in countries like India, Bangladesh and China [18,40,41]. Unlike in any other crops, the water embedded conditions in the paddy fields make the environment suitable for the accumulation of inorganic forms of arsenic, specially arsenite As(III) that is highly toxic to cells [42,43].…”

Section: Discussionmentioning

confidence: 99%

Discerning the role of a functional arsenic-resistance cassette in the evolution and adaptation of a rice pathogen

et al. 2021

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Arsenic is highly toxic element to all forms of life and is a major environmental contaminant. Understanding acquisition, detoxification and adaptation mechanisms in bacteria that are associated with the host in arsenic-rich conditions can provide novel insights into the evolutionary dynamics of host–microbe–environment interactions. In the present study, we have investigated an arsenic-resistance mechanism acquired during the evolution of a particular lineage in the population of Xanthomonas oryzae pv. oryzae, which is a serious plant pathogen infecting rice. Our study revealed the horizontal acquisition of a novel chromosomal 12 kb ars cassette in X. oryzae pv. oryzae IXO1088 that confers high resistance to arsenate/arsenite. The ars cassette comprises several genes that constitute an operon induced in the presence of arsenate/arsenite. Transfer of the cloned ars cassette to X. oryzae pv. oryzae BXO512, which lacks the cassette, confers an arsenic-resistance phenotype. Furthermore, the transcriptional response of X. oryzae pv. oryzae IXO1088 under arsenate/arsenite exposure was analysed using RNA sequencing. Arsenic detoxification and efflux, oxidative stress, iron acquisition/storage, and damage repair are the main cellular responses to arsenic exposure. Our investigation has provided insights into the existence of a novel detoxification and adaptation mechanism within the X. oryzae pv. oryzae population to deal with high-arsenic conditions outside the rice plant.

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Section: Discussionmentioning

confidence: 99%

Discerning the role of a functional arsenic-resistance cassette in the evolution and adaptation of a rice pathogen

et al. 2021

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“…It may also affect the morphology and physiology of the plants and reduce the overall crop production. In addition, bioaccumulation of metals and metalloids in crops has potential to inter into food chain [33,34]. The quality of water used for industrial activities is also important as inappropriate water in industrial operation can cause corrosion or scaling on material/container surface resulting an increase in the maintenance and operational costs [35].…”

Section: Supplementary Informationmentioning

confidence: 99%

Integration of multivariate statistics and water quality indices to evaluate groundwater quality and its suitability in middle Gangetic floodplain, Bihar

2021

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This study is conducted along the middle Gangetic floodplain, to investigate the hydrogeochemical characteristics and suitability of groundwater for irrigation and human consumptions. Altogether 65 groundwater samples were collected and analyzed for major ions and water quality parameters. pH of all the samples except 1 is found > 7, which suggests alkaline aquifer condition. Groundwater samples predominately belong to Ca-Mg-HCO3 water type followed by Na-HCO3, Mg-HCO3 and Mg-SO4 water types. Hierarchical cluster analysis (HCA) combines groundwater into two distinct groups, Group 1 is found as less mineralized as the average EC value is found 625.3 μS/cm, while it is found 1375 μS/cm for Group 2. The results of correlation analysis and PCA suggest influence of natural and anthropogenic activities on groundwater. PCA extracts four major PCs which describes 71.7% of total variance. PC1 indicates influence of both lithogenic and anthropogenic activities on groundwater quality. PC2 and PC3 infer natural factors, and PC4 suggests influence of anthropogenic activities on groundwater. Exceeding concentration of F−, Fe and Mn above WHO guidelines are found as major public health concern. WQI of all except 4 groundwater samples suggests excellent to good water quality; however, 23% of the samples are not suitable based on WPI values. Irrigation indices suggest that groundwater is mostly suitable for irrigation; however, 10.7%, 12.3% and 3% samples for RSBC, MAR and KR, respectively, exceed the recommended limits and are unsuitable for irrigation. A proper management strategy and quality assurance is recommended before groundwater consumption and use in the study area.

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“…Groundwater irrigation has increased arsenic in rice grains due to arsenic deposition in paddy soils. In As-endemic parts of Bihar, India, a recent study found that As exposure through food exceeded that from drinking water [11]. The average As concentration in rice straw was 22 times that of rice grain [12].…”

Section: Introductionmentioning

confidence: 99%

Translocation of Soil Arsenic towards Accumulation in Rice: Magnitude of Water Management to Minimize Health Risk

Jahan

Abedin

Islam

et al. 2021

Water

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Globally, the risk of arsenic (As) contamination in soil and rice is well documented across the globe. In Bangladesh, drinking water and rice are two major exposure pathways of As to humans. Therefore, the efficiency of recent technologies to reduce rice As and associated human health risks still need to be deeply investigated. In this direction, a pot experiment was performed to investigate the impact of soil As and agronomic irrigation management on rice (cv. BRRI dhan28) growth, yield, As accumulation, and finally, health risks to humans from consuming rice. Treatment combinations were made with three levels of As (0, 20, and 40 mg kg−1) having two irrigation procedures, including alternate wetting and drying (AWD) and traditional continuous flooding (CF). According to the findings, As pollution in the soil lowered the yield contributing features and rice yield, including panicle length, filled grains per panicle, sterile grains per panicle, 1000-grain weight, grain yield, and straw yield. AWD water management significantly improved the growth performance and productivity of rice. Grain yield was increased by 13% in AWD compared to CF. Rice grain and straw As concentrations were increased to 0.56 mg kg−1 and 15.10 mg kg−1, respectively, in soil with 40 mg kg−1 As and CF water management. AWD treatment significantly reduced grain and straw As contents by 16% and 28%, respectively. Increased grain, straw, and total As uptake was noticed with higher soil As concentrations. The study also found that rising soil As raised non-carcinogenic risks (HQ > 1) and carcinogenic risks (CR > 1.010–4) while AWD lowered health risks compared to CF. Thus, rice farming using AWD irrigation could be a viable and long-term solution for reducing As contamination in rice and associated human health hazards.

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Arsenic exposure from food exceeds that from drinking water in endemic area of Bihar, India

Cited by 47 publications

References 39 publications

Discerning the role of a functional arsenic-resistance cassette in the evolution and adaptation of a rice pathogen

Discerning the role of a functional arsenic-resistance cassette in the evolution and adaptation of a rice pathogen

Integration of multivariate statistics and water quality indices to evaluate groundwater quality and its suitability in middle Gangetic floodplain, Bihar

Translocation of Soil Arsenic towards Accumulation in Rice: Magnitude of Water Management to Minimize Health Risk

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