Genotypic differences among rice cultivars in lead accumulation and translocation and the relation with grain Pb levels

Liu, Jianguo; Ma, Xinmei; Wang, Mingxin; Sun, Xiangwu

doi:10.1016/j.ecoenv.2012.12.007

Cited by 81 publications

(31 citation statements)

References 23 publications

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“…There is a wide range of genotypic variation existing among rice plants regarding uptake, translocation, and accumulation of Pb (Cheng et al 2006). A study conducted by Liu et al (2013) in China confirmed the genotypicspecific behavior of rice regarding Pb translocation from roots to shoot with higher translocation factors (TF) in hybrid indica followed by indica and japonica.…”

Section: Introductionmentioning

confidence: 58%

Lead toxicity in rice: effects, mechanisms, and mitigation strategies—a mini review

Ashraf

Kanu

et al. 2015

Environ Sci Pollut Res

219

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Lead (Pb) is a major environmental pollutant that affects plant morpho-physiological and biochemical attributes. Its higher levels in the environment are not only toxic to human beings but also harmful for plants and soil microbes. We have reviewed the uptake, translocation, and accumulation mechanisms of Pb and its toxic effects on germination, growth, yield, nutrient relation, photosynthesis, respiration, oxidative damage, and antioxidant defense system of rice. Lead toxicity hampers rice germination, root/shoot length, growth, and final yield. It reduces nutrient uptake through roots, disrupts chloroplastic ultrastructure and cell membrane permeability, induces alterations in leaves respiratory activities, produces reactive oxygen species (ROS), and triggers some enzyme and non-enzymatic antioxidants (as defense to oxidative damage). In the end, biochar amendments and phytoremediation technologies have been proposed as soil remediation approaches for Pb tainted soils.

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Section: Introductionmentioning

confidence: 58%

Lead toxicity in rice: effects, mechanisms, and mitigation strategies—a mini review

Ashraf

Kanu

et al. 2015

Environ Sci Pollut Res

219

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“…Certainly, heavy metal accumulation in plants is a function of complex interaction among soil, plant, and environmental factors. Numerous studies have shown that there are remarkable differences in heavy metal accumulation in grains, shoots, and roots of different rice cultivars Liu et al 2003Liu et al , 2013Liu et al , 2007. A significant genotypic variation in the Cd, Cr, As, Ni, and Pb concentrations in grains of nine rice genotypes was observed (Cheng et al 2006).…”

Section: Introductionmentioning

confidence: 93%

Heavy Metal Accumulation in Different Rice Cultivars as Influenced by Foliar Application of Nano-silicon

Wang

Gao

et al. 2016

Water Air Soil Pollut

104

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Silicon (Si) is one of beneficial elements for rice and is considered to enhance plant resistance to toxic metals. Nanofertilizers generally have a smaller particle size and specific characters and behaviors in soil and plants. Thus, nano-Si fertilizers may putatively have an advantage over traditional fertilizers in reducing heavy metal accumulation in rice straws and grains, but their effects still require investigation. Here, using a greenhouse pot culture experiment, we studied the effects of foliar application with organic or inorganic nano-Si on growth and yields, and heavy metal accumulation in six rice cultivars grown in soil artificially polluted with Cd, Pb, Cu, and Zn. Generally, hybrid cultivars had higher biomass and yields than conventional cultivars (P < 0.001), and nano-Si showed positive effects on at least four cultivars (P < 0.001). The average spike weight of six cultivars increased to 25.3 and 24.8 %, respectively, by inorganic and organic nano-Si. Hybrid cultivars generally had higher Cd concentrations in roots, shoots, and grains than conventional cultivars. In most cases, both organic and inorganic nano-Si reduced concentrations (P < 0.01) and bioconcentration factor (BCF) of the heavy metals in grains and decreased the translocation factor (TF) of heavy metals from roots to shoots and/or from shoots to grains, and the most pronounced effects were found on Cd. The average grain Cd concentration decreased to 27.1 and 23.8 %, respectively, by inorganic and organic nano-Si. In general, inorganic nano-Si had more pronounced effect than organic nano-Si on both rice growth and heavy metal accumulation. This present study firstly showed that nano-Si had positive effects on the growth and yields of rice grown in multi-metal-polluted soil and potentially reduced heavy metal accumulation in rice, especially the toxic Cd in grains. However, both rice cultivar and chemical form of Si fertilizers should be taken into account to develop efficient nano-Si fertilizers for preventing heavy metal-contaminated rice grains.

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“…In soil, lead is mainly derived through air deposition, such as vehicular emissions, fuel and trash burning and disposal. Plants, including rice (Oryza sativa L.) and vegetables, can accumulate lead through several pathways, including uptake from lead contaminated soil (Verma and Dubey, 2003;Yoon et al, 2006;Liu et al, 2013). It has been reported that rice and vegetables growing in lead contaminated mining areas can pose a potential health risk to the local population through the food chain (Zhang et al, 1998;Capdevila et al, 2003;Yang et al, 2004;Zhuang et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Effect of selenium fertilization on the accumulation of cadmium and lead in rice plants

et al. 2014

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Background and Aims The accumulation of cadmium and lead in rice (Oryza sativa L.) grains is a potential threat to human health. In this study, the effect of selenium fertilization on the uptake and translocation of cadmium and lead in rice plants was investigated. Methods Rice plants were cultivated using cadmium and lead contaminated soils with selenium addition at three concentrations (0, 0.5 and 1 mg kg −1 ). At maturity, plants were harvested, and element concentrations in rice tissues were analyzed by using ICP-MS.Results Selenium application significantly increased seleniumaccumulationinricegrain,andmarkedlydecreased cadmium and lead concentrations in rice tissues. In brown rice grains, selenium application reduced cadmium concentrations by 44.4%, but had nosignificant effect onlead accumulation. Selenium application significantly decreased metal mobility in soils, at 0.5 mg kg −1 treatment, the translocation factor of cadmium and lead from soil to ironplaquedecreased by71and 33% respectively. Conclusions The mechanism of selenium mitigating of heavy metal accumulation in rice could be decreasing metal bioavailability in soil. Selenium fertilization could be an effective and feasible method to enrich selenium and reduce cadmium levels in brown rice.

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Genotypic differences among rice cultivars in lead accumulation and translocation and the relation with grain Pb levels

Cited by 81 publications

References 23 publications

Lead toxicity in rice: effects, mechanisms, and mitigation strategies—a mini review

Lead toxicity in rice: effects, mechanisms, and mitigation strategies—a mini review

Heavy Metal Accumulation in Different Rice Cultivars as Influenced by Foliar Application of Nano-silicon

Effect of selenium fertilization on the accumulation of cadmium and lead in rice plants

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