Lead toxicity, uptake, and translocation in different rice cultivars

Liu, Jianguo; Li, Kunquan; Xu, Jiakuan; Zhang, Zujian; T, Ma; Lü, Xiaolong; Zhu, Qingsen

doi:10.1016/s0168-9452(03)00273-5

Cited by 143 publications

(73 citation statements)

References 33 publications

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“…Kadkhodaie et al (2012) reported that with increasing salinity, absorbable forms of heavy metals (Cd, Ni and Pb) increased in soil and consequently concentration of Cd, Ni and Pb increased in sunflower and Sudan grass when grown in such soils. Variation in Pb accumulation and transport of heavy metals amongst rice varieties has been previously observed (Liu et al, 2003;Niaz et al, 2010). Thus, successful rice crop production with better grain quality in saline and Pb stress conditions demands the selection of suitable variety having better salt (Arshadullah et al, 2011) and Pb tolerance (Wang et al, 2011).…”

Section: Introductionmentioning

confidence: 65%

“…Reduction in plant growth can be directly attributed to retardation of cell division by applied Pb, a result which supported by previous research. Liu et al (2003) previously reported a significant decrease in straw and grain yields of rice cultivars in response to Pb stress, when studying Pb toxicity, uptake and translocation in different rice cultivars at varying levels of applied Pb in contaminated soil.…”

Section: Discussionmentioning

confidence: 99%

“…The differences among rice varieties for decreased paddy yield (Fig. 1) can be reasoned by the fact that Pb toxicity variably affected yield components particularly number of filled grains and filled spikelet percentage by causing sterility at anthers synthesis (Liu et al, 2003).…”

Section: Discussionmentioning

confidence: 99%

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Growth and Physiological Responses of Two Rice Varieties to Applied Lead in Normal and Salt-Affected Soils

Iqbal¹,

Murtaza²,

Saqib³

et al. 2015

IJAB

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To cite this paper: Iqbal, M.M., G. Murtaza, Z.A. Saqib and R. Ahmad, 2015. Growth and physiological responses of two rice varieties to applied lead in saltaffected soils. AbstractIn arid and semi-arid regions of the world, soil salinity and heavy metal pollution occurring through various natural and anthropogenic means, is becoming major threat to safe crop production. The most feasible and effective approach is screening, breeding and cultivation of food crop varieties with low toxic metal accumulation. A pot study was conducted to investigate the growth and physiological responses of rice exposed to applied lead (Pb) in normal and salt-affected soils comprising four levels of Pb (0, 50, 100 and 150 mg kg -1 soil), two rice varieties (Shaheen basmati and KS-282) and two types of soil as normal and salt-affected soils. Increasing level of Pb decreased plant height, straw and paddy yields, photosynthetic and transpiration rates and stomatal conductance, more under salt-affected conditions. The cv. Shaheen basmati showed better response for growth, yield, physiological attributes and had lower Pb concentration in straw and paddy compared to cv. KS-282, at all levels of applied Pb in both normal and salt-affected soils. Thus, Shaheen basmati was found to be grown for Pb risk-free rice production and can be a good source for future rice breeding programs with the aim to produce low Pb accumulation and salt-tolerant rice varieties.

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Section: Introductionmentioning

confidence: 65%

Section: Discussionmentioning

confidence: 99%

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Growth and Physiological Responses of Two Rice Varieties to Applied Lead in Normal and Salt-Affected Soils

Iqbal¹,

Murtaza²,

Saqib³

et al. 2015

IJAB

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“…The tolerance, accumulation and transport of Pb varied greatly among rice varieties (Yang et al, 2000;Verma and Dubey, 2003;Liu et al, 2003). In present hydroponics experiment, when rice genotypes were raised against increasing rates of Pb, rice plants accumulated significant amounts of Pb in concentration-dependent manners.…”

Section: Discussionmentioning

confidence: 76%

Effects of Lead Salts on Growth, Chlorophyll Contents and Tissue Concentration of Rice Genotypes

Iqbal¹,

Murtaza²,

Naz³

et al. 2017

IJAB

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Lead (Pb) is one of the most abundant heavy metal pollutants and readily absorbed by plants that exerts toxic effects and also gets entered into human food chain. There are very few examples of genetic differences being exploited to produce low Pb rice food through decreased metal uptake from Pb-polluted environment. In this regard, solution culture screening has been proposed as a rapid technique for the identification of prospective rice genotypes. In a hydroponics study, fourteen rice genotypes were tested against varying rates of applied Pb, to investigate the effects of chloride, sulfate and nitrate salts of Pb on growth, chlorophyll contents and tissue concentration of rice genotypes. The plants were exposed to 0, 100 and 200 µM Pb as PbCl 2 , PbSO 4 and Pb(NO 3 ) 2, separately for 42 days. Thus, there were seven treatments arranged in completely randomized design each with four replications. The results showed that at a certain defined Pb rate (100 or 200 µM), the toxic effects of Pb as Pb(NO 3 ) 2 to rice plants were found significantly (p ≤ 0.05) higher than PbCl 2 and PbSO 4 treatments. At all applied Pb treatments, the Shaheen Basmati and KS-282 were found tolerant to Pb because of higher growth, total chlorophyll contents, low root and shoot Pb concentration. Therefore, these both genotypes were found to be a good source for future rice breeding programs or grown by the farmers for Pb risk-free rice production in Pb polluted environment.

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“…They can enter to environment through anthropogenic sources such as using superphosphate fertilizers and fossil fuels, industrial sludge sewage discharging and traffic as well as natural ways (Liu et al, 2003). Currently, concern to universal pollution by these metals is related to their bioaccumulation over the period of time in food chain and agricultural products, which is causing serious health risks for humans, animals and crops (Liu et al, 2003;Lie et al, 1990;Aghamirlou et al, 2015). As a result, the main route of exposure to these elements in human population is soil-crop-food pathway (Fu et al, 2008).…”

Section: Introductionmentioning

confidence: 99%

Assessment of Human Health Risk for Heavy Metals in Imported Rice and its Daily Intake in Iran

Yousefi¹,

Meserghani²,

Bahrami³

et al. 2016

Research J. of Environmental Toxicology

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This study investigated the amount of Pb, Cd, Cr, Ni, Zn and Cu in samples of imported Indian rice (Oryza sativa) available in Iranian markets. Twenty brands of Indian rice which widely-consumed were collected from Iranian local markets. Five samples of each brand were collected and analyzed. After the rice grains were digested through acid digestion method, Pb, Cd, Cr, Ni, Zn, Cu values of each brand were determined by atomic absorption spectrometer. The results showed that cadmium content could not be detected in rice samples (Cd<0.015 mg kgG 1 ).The mean values of lead, chromium, nickel, Zinc and Cu were 0.33±0.25, 0.631±0.43, 0.128±0.047, 3.47±2.12 and 2.08±0.33 mg kgG 1 , respectively. The results revealed that the mean value of lead in the samples was a little higher than recommended value by FAO/WHO guidelines. Moreover, with determining the degree of Provisional Tolerable Weekly Intake (PTWI) of Pb, Cd, Cr, Ni, Zn and Cu for one person receives less of these metals compared with the standards set by FAO/WHO. Of course, it should be noted that with the increasing rate of food sources contaminated with heavy metals and due to their bioaccumulation in body tissues and the subsequent health risks, it is recommended to use utter products.

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Lead toxicity, uptake, and translocation in different rice cultivars

Cited by 143 publications

References 33 publications

Growth and Physiological Responses of Two Rice Varieties to Applied Lead in Normal and Salt-Affected Soils

Growth and Physiological Responses of Two Rice Varieties to Applied Lead in Normal and Salt-Affected Soils

Effects of Lead Salts on Growth, Chlorophyll Contents and Tissue Concentration of Rice Genotypes

Assessment of Human Health Risk for Heavy Metals in Imported Rice and its Daily Intake in Iran

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