Evaluation of Thai rice cultivars with low-grain cadmium

Sriprachote, Anongnat; Kanyawongha, Pornthiwa; Pantuwan, G.; Ochiai, Kumiko; Matoh, Tōru

doi:10.1080/00380768.2012.715070

Cited by 15 publications

(7 citation statements)

References 7 publications

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“…It is thus regarded as a serious global problem with an impact on stability of ecosystems and on safety of food sources. Safe food sources with reduced cadmium content have been sought to decrease exposure by cadmium [44].…”

Section: Discussionmentioning

confidence: 99%

Effect of Accumulation of Heavy Metals in the Red Fox Intestine on the Prevalence of Its Intestinal Parasites

Borkovcová

Fišer

Bednářová

et al. 2020

Animals

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The aim of this study was (i) to compare levels of accumulated heavy metals in the fox intestines with and without parasites. Moreover, our research also dealt with (ii) examination of the relationship between heavy metal content in fox intestines and between the presence of fox intestinal parasites. The intestines of 34 hunter-killed foxes were dissected to detect the occurrence of parasites. In 15 intestinal samples, parasitic intestinal helminths were found. Heavy metal content in small intestine tissue and in parasites was determined using atomic absorption spectrometry (AAS). The prevalence of parasites was significantly dependent on Cd content in the host’s small intestine (p < 0.01). To conclude, the authors suggest that parasites are sensitive to Cd levels; their prevalence in the intestines of the fox host decreases to zero with increasing Cd content.

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Section: Discussionmentioning

confidence: 99%

Effect of Accumulation of Heavy Metals in the Red Fox Intestine on the Prevalence of Its Intestinal Parasites

Borkovcová

Fišer

Bednářová

et al. 2020

Animals

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“…Sriprachote et al [22] had revealed that growing on the same contaminated paddy fields in Mae Sot District, specific Thai-rice cultivars RD5 (0.108 mg kg -1 ), RD15, KNU1 (0.125 mg kg -1 ) and KNU2 (0.179 mg kg -1 ) had significantly lower Cd concentrations in their grain than the prevailing cultivars KDML105 and RD6 (0.740 mg kg -1 ). The current survey for 6-years monitoring which the authors had encouraged the farmer to grow the promising low grain-Cd rice cultivar RD15 instead of the prevailing cultivar KDML105, since 2012, in harmony with the previous research [22], under the same conditions, the RD15 had lower Cd concentration than the one determined from the KDML105. Comparison between both cultivars, the RD15 had 80% of Cd lower than the KDML105.…”

Section: Discussionmentioning

confidence: 99%

“…Genetic variations in Cd accumulations in rice grains are reported [18][19][20][21]. Sriprachote et al [22] have studied varietal difference in Cd uptake among prevailing Indica rice cultivars in the contaminated paddy fields of the Pha Te Village of Mae Sot District, and concluded that RD15 cultivar had lowest Cd concentration in grain (0.197 mg kg -1 ) compared with the prevailing cultivar KDML105 (0.58 mg kg -1 ), and lower than the maximum concentration of 0.4 mg kg -1 polished rice. The results indicated that by selecting rice genotype with low-grain Cd cultivars, human Cd intake from rice consumption and the resulting health risk could be reduced.…”

Section: Introductionmentioning

confidence: 99%

Six Years Monitoring of the Promising Low Grain-Cd Accumulating Rice, RD15 Cultivar Grown on Cd-contaminated Paddy Soils

et al. 2020

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The experiment was conducted on the Cd-contaminated paddy field, two of Thai rice cultivars, the prevailing KDML105 and RD15 were included together with determining grain-Cd accumulation. The results had revealed that the RD15 contained Cd in grains not only lower than KDML105 but also lower than the critical level as proposed by Codex (0.4 mg kg-1 polished rice). Thus, the RD15 was selected as the promising low grain-Cd accumulating rice cultivar, and farmers were encouraged to grow this cultivar. The grains of prevailing and promising rice cultivars were annually collected for Cd analysis. After six-years monitoring, the results revealed that the average concentration of Cd in KDML105 was 0.658 mg kg-1, which exceeded the critical level. On the other hand, the average concentration observed in RD15 (0.127 mg kg-1) was lower than the critical level. The human dietary intake of Cd through rice consumption was calculated, comparing to the provisional tolerable weekly intake (PTWI) as adopted by FAO/WHO (7 ug Cd kg-1 BW per week), the PTWI of KDML105 was far exceeded the critical level. Contrary, the RD15 had the PTWI lower than the critical level. Present results indicated that, by cultivating RD15 the promising low-grain Cd cultivar, Cd intake together with health risk of human could be reduced.

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“…The concept of planting pollution-safe cultivars or low Cd-accumulating varieties in contaminated areas to accumulate the pollutant in their grains at a sufficiently low level for safe consumption has been previously proposed (Yu et al 2006;Sriprachote et al 2012a;2012b). Based on the lower Cd content in the grain, these authors suggested that alternative varieties of rice should be grown in Cd-contaminated areas.…”

Section: Discussionmentioning

confidence: 99%

Reduction of cadmium uptake in rice endophytically colonized with the cadmium-tolerant bacterium Cupriavidus taiwanensis KKU2500-3

Punjee

Siripornadulsil

2018

Can. J. Microbiol.

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The effects of the cadmium (Cd)-tolerant bacterium Cupriavidus taiwanensis KKU2500-3 on the growth, yield, and Cd concentration in rice grains were investigated in the rice variety Phitsanulok 2 (PL2), which was cultivated in a hydroponic greenhouse. The numbers of Cd-tolerant bacteria isolated from the roots and shoots of plants under the RB (rice with bacteria) and RBC (rice with bacteria and Cd) treatments ranged from 2.60 to 9.03 and from 3.99 to 9.60 log cfu·g of PL2, respectively. This KKU2500-3 strain was successfully colonized in rice, indicating that it was not only nontoxic to the plants but also became distributed and reproduced throughout the plants. Scanning electron microscopy analysis revealed attachment of the bacterium to the root surface, whereas the internally colonized bacteria were located in the vascular tissue, cell wall, and intercellular space. Although the Cd contents found in PL2 were very high (189.10 and 79.49 mg·kg in the RC (rice with Cd) and RBC roots, respectively), the Cd accumulated inside the rice seeds at densities of only 3.10 and 1.31 mg·kg, respectively; thus, the bacteria reduced the Cd content to 57.74% of the control content. Therefore, the colonizing bacteria likely acted as an inhibitor of Cd translocation in PL2.

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Evaluation of Thai rice cultivars with low-grain cadmium

Cited by 15 publications

References 7 publications

Effect of Accumulation of Heavy Metals in the Red Fox Intestine on the Prevalence of Its Intestinal Parasites

Effect of Accumulation of Heavy Metals in the Red Fox Intestine on the Prevalence of Its Intestinal Parasites

Six Years Monitoring of the Promising Low Grain-Cd Accumulating Rice, RD15 Cultivar Grown on Cd-contaminated Paddy Soils

Reduction of cadmium uptake in rice endophytically colonized with the cadmium-tolerant bacterium Cupriavidus taiwanensis KKU2500-3

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