Enumeration and characterization of arsenate-resistant bacteria in arsenic free soils

Jackson, Colin R.; Dugas, Sandra L.; K, Harrison

doi:10.1016/j.soilbio.2005.04.010

Cited by 77 publications

(53 citation statements)

References 15 publications

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“…Rice, the most important staple food in Asia, has been considered to be a major source of Cd and As intake by humans in some parts of Japan, India and China (Tsukahara et al 2003;Mondal and Polya, 2008;Liang et al 2010). Minimizing the intake of Cd and As from rice in the diet is therefore an important health issue, and it is desirable to limit the concentrations of heavy metals in rice grains to control the potential health risks (Jackson et al 2005;Granta et al 2008).…”

Section: Introductionmentioning

confidence: 99%

Effect of water management on cadmium and arsenic accumulation by rice (Oryza sativa L.) with different metal accumulation capacities

Yuan

et al. 2013

J Soils Sediments

111

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Purpose Water management affects the bioavailability of cadmium (Cd) and arsenic (As) in the soil and hence their accumulation in rice grains and grain yields. However, Cd and As show opposite responses to soil water content, but information, particularly on irrigation, is missing on a field scale. The purpose of the present study was therefore to find a water management regime that can lower accumulation of both Cd and As in grain without yield loss. Materials and methods Two rice (Oryza sativa L.) cultivars, A16 and A159, with different grain Cd accumulation capacities were employed in field plot experiments with four water management regimes comprising aerobic, intermittent, conventional practice and flooded. The dynamics of Cd and As bioavailability in the soil and Cd and As concentrations in roots, straw and grains were determined at the early tillering, full tillering, panicle initiation, filling and maturity stages of crop growth. Results and discussion The lower water content regimes (aerobic and intermittent) mostly led to higher soil HClextractable Cd than the higher soil water content regimes (conventional and flooded). HCl-extractable As in contrast was favoured by the higher soil water content treatments. Conventional and flooded irrigation accordingly gave higher plant As concentrations but lower Cd compared to aerobic and intermittent irrigation. Cd concentrations in roots and straw of both varieties increased with growth stage, especially in aerobic and intermittent regimes, while As concentrations in plants showed little change or a slight decrease. As the water irrigation volume increased from aerobic to flooded, brown rice Cd decreased from 1.15 to 0.02 mgkg −1 in cultivar A16 and from 1.60 to 0.05 mgkgin cultivar A159, whereas brown rice As increased. Aerobic and flooded treatments produced approximately 10-20 % lower grain yields than intermittent and conventional treatments. Cultivars with low Cd accumulation capacity show higher brown rice grain As than those with high Cd uptake capacity.Conclusions Of the four water management regimes, the conventional irrigation method (flooding maintained until full tillering followed by intermittent irrigation) ensured high yield with low Cd and As in the brown rice and so remains the recommended irrigation regime.

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Section: Introductionmentioning

confidence: 99%

Effect of water management on cadmium and arsenic accumulation by rice (Oryza sativa L.) with different metal accumulation capacities

Yuan

et al. 2013

J Soils Sediments

111

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“…They were identified as belonging to four genera capable of tolerating high As concentrations (Chitpirom, et al, 2009;Escalante et al, 2009). Among the four genera, Pseudomonas is the most widely reported genus detected in As contaminated soils (Achour et al, 2007;Escalante, et al, 2009;Huang et al, 2010), As-free soils (Jackson et al, 2005), and natural groundwater (Liao et al, 2011).…”

Section: Discussionmentioning

confidence: 99%

“…The MIC of As(III) and As(V) for each bacteria was determined in to be the range 10 to 500 mM; however, these values could not directly compare with other reports because of the differences in growth conditions (Chitpirom, et al, 2009;Jackson, et al, 2005;Liao, et al, 2011;Pepi, et al, 2011). To screen for bacteria that could regulate and change As oxidation states, As speciation was determined using HPLC-AFS.…”

Section: Discussionmentioning

confidence: 99%

Arsenic interception by cell wall of bacteria observed with surface-enhanced Raman scattering

Tian

Zhuang

et al. 2012

Journal of Microbiological Methods

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“…Resistances to other heavy metals were determined for zinc chloride (ZnCl 2 ), copper sulphate (CuSO 4 2 ) and silver nitrate (AgNO 3 ). We used the cup method which includes boring a hole in a media containing lawn culture and placing metal solutions in the hole to observe growth around it.…”

Section: Determination Of Heavy Metal Resistancementioning

confidence: 99%

“…These biochemical mechanisms for said detoxification are basically centered on redox reactions and changes between the As (III) and As (V) oxidation states which alter the speciation of arsenic found in the surrounding aqueous medium. Many bacteria have been identified that exhibit resistance or can grow in concentrations of arsenic considered lethal [4]. As opposed to artificial chemical approach, microorganisms have been reported to be able to efficiently remove soluble and particulate forms of metals usually from di- Figure 1.…”

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confidence: 99%

Isolation of Arsenic Resistant Escherichia coli from Sewage Water and Its Potential in Arsenic Biotransformation

Bista

Shakya

2017

JTLS

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Arsenic contamination in drinking water from ground water poses a threat to the health of a large population in developing countries in Asia. This has sparked great interests in the potential of different microbes in arsenic resistance and removal from water. This study involves isolation of arsenic resistant Escherichia coli from sewage water from Kathmandu University and investigation of its attributes. Arsenic resistant E. coli was successfully isolated which could survive in high concentration of arsenic. The maximum tolerance of arsenite was 909.79 mg/L (sodium arsenite) and 3120.1 mg/L arsenate (sodium arsenate) which is well above most natural concentration of arsenic in ground water. This particular E. coli tolerated multiple heavy metal like silver nitrate, cobalt sulphate, cadmium chloride, nickel chloride, mercury chloride, copper sulphate, and zinc chloride at concentration 20 µM, 1 mM, 0.5mM, 1mM, 0.01 mM, 1 mM, and 1 mM respectively which are concentrations known to be toxic to E. coli. Biotransformation of arsenite to arsenate was also checked for by a qualitative silver nitrate technique. This E. coli was able to transform arsenate to arsenite. It showed some sensitivity to Ciprofloxacin, Gentamicin and Nalidixic Acid. As E. coli and its genome are very widely studied, these particular properties have a lot of potential in microbial remediation or microbial recovery of metals and possible recombination approaches.

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Enumeration and characterization of arsenate-resistant bacteria in arsenic free soils

Cited by 77 publications

References 15 publications

Effect of water management on cadmium and arsenic accumulation by rice (Oryza sativa L.) with different metal accumulation capacities

Effect of water management on cadmium and arsenic accumulation by rice (Oryza sativa L.) with different metal accumulation capacities

Arsenic interception by cell wall of bacteria observed with surface-enhanced Raman scattering

Isolation of Arsenic Resistant Escherichia coli from Sewage Water and Its Potential in Arsenic Biotransformation

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