Keyan Zhao, Chih‐Wei Tung, Georgia C. Eizenga, Mark H. Wright et al.
Asian rice, Oryza sativa is a cultivated, inbreeding species that feeds over half of the world's population. Understanding the genetic basis of diverse physiological, developmental, and morphological traits provides the basis for improving yield, quality and sustainability of rice. Here we show the ...
Paul N. Williams, Adam H. Price, Andrea Raab, Sk Arafat Hossain et al.
Ingestion of drinking water is not the only elevated source of arsenic to the diet in the Bengal Delta. Even at background levels, the arsenic in rice contributes considerably to arsenic ingestion in subsistence rice diets. We set out to survey As speciation in different rice varieties from differen...
Andrew A. Meharg, Gareth J. Norton, Claire Deacon, Paul N. Williams et al.
Cereal grains are the dominant source of cadmium in the human diet, with rice being to the fore. Here we explore the effect of geographic, genetic, and processing (milling) factors on rice grain cadmium and rice consumption rates that lead to dietary variance in cadmium intake. From a survey of 12 c...
Gareth J. Norton, Mohammad Shafaei, Anthony J. Travis, Claire Deacon et al.
As the world’s population increases, demands on staple crops like rice (Oryza sativa L.) will also increase, requiring additional fresh water supplies for irrigation of rice fields. Safe alternate wetting and drying (AWD) is a water management technique that is being adopted across a number of count...
Gareth J. Norton, Alex Douglas, Brett Lahner, Elena Yakubova et al.
The mineral concentrations in cereals are important for human health, especially for individuals who consume a cereal subsistence diet. A number of elements, such as zinc, are required within the diet, while some elements are toxic to humans, for example arsenic. In this study we carry out genome-wi...
Gareth J. Norton, Guilan Duan, Tapash Dasgupta, Md. Rafiqul Islam et al.
The concentration of arsenic (As) in rice grains has been identified as a risk to human health. The high proportion of inorganic species of As (As(i)) is of particular concern as it is a nonthreshold, class 1 human carcinogen. To be able to breed rice with low grain As, an understanding of genetic v...
Gareth J. Norton, Md. Rafiqul Islam, Claire Deacon, Fang‐Jie Zhao et al.
For the world's population, rice consumption is a major source of inorganic arsenic (As), a nonthreshold class 1 carcinogen. Reducing the amount of total and inorganic As within the rice grain would reduce the exposure risk. In this study, grain As was measured in 76 cultivars consisting of Banglade...
Gareth J. Norton, Shannon R. M. Pinson, Jill Alexander, Susan McKay et al.
• Inorganic arsenic (As(i) ) in rice (Oryza sativa) grains is a possible threat to human health, with risk being strongly linked to total dietary rice consumption and consumed rice As(i) content. This study aimed to identify the range and stability of genetic variation in grain arsenic (As) in rice....
Rachel Bezanson, Ivo Labbé, Katherine E. Whitaker, Joel Leja et al.
Abstract In this paper we describe the survey design for the Ultradeep NIRSpec and NIRCam Observations before the Epoch of Reionization (UNCOVER) Cycle 1 JWST Treasury program, which executed its early imaging component in 2022 November. The UNCOVER survey includes ultradeep (∼29–30AB) imaging of ∼4...
Jacqueline L. Stroud, Gareth J. Norton, Md. Rafiqul Islam, Tapash Dasgupta et al.
Irrigation with arsenic contaminated groundwater in the Bengal Delta may lead to As accumulation in the soil and rice grain. The dynamics of As concentration and speciation in paddy fields during dry season (boro) rice cultivation were investigated at 4 sites in Bangladesh and West Bengal, India. Th...
Adam H. Price, Gareth J. Norton, David E. Salt, Oliver Ebenhoeh et al.
Abstract The crop management practice of alternate wetting and drying ( AWD ) is being promoted by IRRI and the national research and extension program in Bangladesh and other parts of the world as a water‐saving irrigation practice that reduces the environmental impact of dry season rice production...
Tapash Dasgupta, Shahid Akhtar Hossain, Andrew A. Meharg, Adam H. Price
• The genetics of arsenic tolerance in plants has not been extensively studied and no arsenic tolerance gene has been genetically mapped. • Screening 20 diverse genotypes of rice for reduced root growth in 13.3 m arsenate identified marked differences in tolerance. The most sensitive variety, Dawn, ...
Gareth J. Norton, Paul N. Williams, Eureka Adomako, Adam H. Price et al.
In a large scale survey of rice grains from markets (13 countries) and fields (6 countries), a total of 1578 rice grain samples were analysed for lead. From the market collected samples, only 0.6% of the samples exceeded the Chinese and EU limit of 0.2 μg g(-1) lead in rice (when excluding samples c...
Zahirul I. Talukder, Didier Tharreau, Adam H. Price
• The race specificity of quantitative trait loci (QTL) for partial resistance to blast (Magnaporthe grisea) disease was tested by using isolates for which no major resistance gene segregated in a mapping population based on rice (Oryza sativa) varieties Bala × Azucena. • Recombinant inbred lines we...
Jacqueline L. Stroud, Mujib Khan, Gareth J. Norton, Md. Rafiqul Islam et al.
Arsenic (As) contamination of paddy soils threatens rice cultivation and the health of populations relying on rice as a staple crop. In the present study, isotopic dilution techniques were used to determine the chemically labile (E value) and phytoavailable (L value) pools of As in a range of paddy ...