Effects of arsenic and its interaction with phosphorus on yield and arsenic accumulation in rice

Begum, Mahfuza; Akter, J; Jahiruddin, M.; Islam, Rafiqul

doi:10.3329/jbau.v6i2.4822

Cited by 6 publications

(8 citation statements)

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“…Straw N-content was lowest (0.536%) with 0 ppm As treatment and lowest grain N-content (0.470%) was recorded at 30 ppm As treatment. This finding agrees with Begum et al; who reported that the N content in grain and straw increased with increasing addition of arsenic. Different rice varieties showed significant effect on N content in grain but in case of straw it had insignificant effect ( Table 1).…”

Section: Resultssupporting

confidence: 93%

Effects of arsenic and moisture regime on nutrient content and their uptake by NERICA rice

Bhattacherjee

Chowdhury

Rahman

et al. 2016

J Bangladesh Agric Univ

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A pot experiment was carried out in the net house of Bangladesh Institute of Nuclear Agriculture (BINA) to study nutrient content and their uptake by different rice varieties (NERICA-1, NERICA-10 and BRRI dhan48) in response to different levels of arsenic (As) under varying moisture regimes. Three levels of As were added viz. 0, 30, 60 ppm to the pot soil from sodium arsenate (Na2HAsO4. 7H2O). After establishment of crops the moisture level of soil was adjusted to maintain flooded, 50% and 100% field capacity condition during crop growing period. The experiment was laid out in a Completely Randomized Design (CRD), with three replications. The amount of N, P, K, S and Zn was calculated as per their rate of application and was applied to the individual pot. Higher levels of As adversely affected the nutrient content and their uptake by rice except N contents. Nitrogen content increased with the increase of As level. Higher amount of nutrient content and uptake was recorded in BRRI dhan48 and flood condition enhanced higher nutrient content as well as uptake by rice. This study suggests the possible management of moisture regime and considering less As susceptible variety, which might reduce the toxic effects of As on nutrient uptake.J. Bangladesh Agril. Univ. 12(2): 291-296, December 2014

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Section: Resultssupporting

confidence: 93%

Effects of arsenic and moisture regime on nutrient content and their uptake by NERICA rice

Bhattacherjee

Chowdhury

Rahman

et al. 2016

J Bangladesh Agric Univ

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“…1. It has also been reported that the nitrogen concentrations in grain and straw increased with increasing addition of As (Begum et al, 2008). In this experiment, the nitrogen concentration was increased with As treatments and the highest concentrations of nitrogen in grain and shoot were observed in rice plants treated with As and M. minuta, which indicates that the presence of M. minuta did not affect the uptake of nitrogen in rice plants.…”

Section: Effect Of As and M Minuta On Nitrogen Status Of Ricesupporting

confidence: 52%

Nitrogen, phosphorus and potassium status of rice co-planted with a novel phytoremediator, Marsilea minuta L.

Hassi

Hossain

Huq

2018

Bangladesh J. Agric. Res

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A pot experiment was carried out to assess the effects of arsenic and aquatic fern (Marsilea minuta L.), when applied as a phytoremediator, on the nutrient content (nitrogen, phosphorus, and potassium) of rice. Two sets of pot experiments were conducted in the net house on rice (Oryza sativa L.) together with aquatic fern (M. minuta) and on aquatic fern (M. minuta) alone where soils were treated with 1 mg/L As-solution at 80% arsenite and 20% arsenate. No significant difference was found in the nitrogen, phosphorus, and potassium concentrations of rice, in the absence of arsenic, whether grown in the presence of M. minuta or not. The uptake of total nitrogen, phosphorus, and potassium was found to be 36%, 23%, and 22% more, respectively in rice plants treated with M. minuta and arsenic over the control treatment, although the results were statistically insignificant. However, a significant negative relationship was found between arsenic and root nitrogen (P-value of 0.0017) when grown together with arsenic and M. minuta. A significant positive relationship was found between arsenic and shoot phosphorus (P-value of 0.0025) as well as arsenic and shoot and root potassium (P-values were 0.0045 and 0.0115, respectively). The results indicate that Marsilea minuta might be used as a phytoremediator of As together with rice plants.

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“…Use of flooded paddies for rice production became preferred over millennia, however, because the flood water protects rice plants from weeds, insects, drought, temperature extremes, and some diseases, including rice blast. Because roots uptake As through phosphorus (P) and silica (Si) transporters, application of P (Begum et al, 2008;Choudhury et al, 2011) and Si fertilizers has also been evaluated as a mitigation strategy (Seyfferth and Fendorf, 2012;Matsumoto et al, 2015;Seyfferth et al, 2016, Seyfferth et al, 2018. Our research focuses instead on identifying rice genes and physiological factors that can reduce grain-As in a variety of production systems.…”

Section: Introductionmentioning

confidence: 99%

Relationships Among Arsenic-Related Traits, Including Rice Grain Arsenic Concentration and Straighthead Resistance, as Revealed by Genome-Wide Association

et al. 2022

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There is global concern that rice grains and foods can contain harmful amounts of arsenic (As), motivating breeders to produce cultivars that restrict As accumulation in grains to protect human health. Arsenic is also toxic to plants, with straighthead disorder (StHD), causing panicle sterility, being observed in rice. The genetic variation in StHD resistance suggests that plants have evolved mechanisms that reduce As toxicity, possibly via regulation of As uptake, transport, or detoxification/sequestration. Because these mechanisms could also underlie the wide (3- to 100-fold) differences in grain As concentration (grain-As) observed among diverse rice genotypes, it was hypothesized that some genes reduce both grain-As content and StHD susceptibility and may be detectable as co-located StDH and As quantitative trait loci (QTL). We used a machine-learning Bayesian network approach plus high-resolution genome-wide association study (GWAS) to identify QTL for grain-As and StHD resistance within the USDA Rice Minicore Collection (RMC). Arsenic enters roots through phosphorus (P) and silica (Si) transporters, As detoxification involves sulfur (S), and cell signaling to activate stress tolerance mechanisms is impacted by Si, calcium (Ca), and copper (Cu). Therefore, concentrations of Si, P, S, Ca, and Cu were included in this study to elucidate physiological mechanisms underlying grain-As and StHD QTL. Multiple QTL (from 9 to 33) were identified for each of the investigated As-associated traits. Although the QTL for StHD, Si, and grain-As did not overlap as heavily as our hypothesis predicted (4/33 StHD and 4/15 As QTL co-located), they do provide useful guidance to future research. Furthermore, these are the first StHD and Si QTL to be identified using high-density mapping, resulting in their being mapped to shorter, more precise genomic regions than previously reported QTL. The candidate genes identified provide guidance for future research, such as gene editing or mutation studies to further investigate the role of antioxidants and ROS scavenging to StHD resistance, as indicated by candidate genes around the commonly reported qStHD8-2 QTL. Other genes indicated for future study for improving grain-As and StHD include several multidrug and toxic compound extrusion (MATE) genes, F-box genes, and NIPs not documented to date to transport As.

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Effects of arsenic and its interaction with phosphorus on yield and arsenic accumulation in rice

Cited by 6 publications

References 0 publications

Effects of arsenic and moisture regime on nutrient content and their uptake by NERICA rice

Effects of arsenic and moisture regime on nutrient content and their uptake by NERICA rice

Nitrogen, phosphorus and potassium status of rice co-planted with a novel phytoremediator, Marsilea minuta L.

Relationships Among Arsenic-Related Traits, Including Rice Grain Arsenic Concentration and Straighthead Resistance, as Revealed by Genome-Wide Association

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