Robin D. Graham
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View article: Measuring Genotypic Variation in Wheat Seed Iron First Requires Stringent Protocols to Minimize Soil Iron Contamination
Measuring Genotypic Variation in Wheat Seed Iron First Requires Stringent Protocols to Minimize Soil Iron Contamination Open
Measuring genotypic variation in Fe is an important task for plant breeders trying to biofortify wheat ( Triticum aestivum L.), but levels of Fe are often enhanced in wheat seed due to soil derived contamination. Seed Al levels can be used…
View article: The Mechanism of Boron Mobility in Wheat and Canola Phloem
The Mechanism of Boron Mobility in Wheat and Canola Phloem Open
Low-molecular-weight borate complexes were isolated from canola (Brassica napus) and wheat (Triticum aestivum) phloem exudates, as well as the cytoplasm of the fresh-water alga Chara corallina, and identified using matrix-assisted laser de…
View article: Multiple genetic loci for zinc uptake and distribution in barley (<i>Hordeum vulgare</i>)
Multiple genetic loci for zinc uptake and distribution in barley (<i>Hordeum vulgare</i>) Open
Micronutrient malnutrition, often called 'hidden hunger', affects over two billion people globally. This is particularly problematic in developing countries where widespread zinc (Zn) deficiency exists as a result of a predominantly plant-…
View article: Quantitative trait loci for reducing sugar concentration in the barley root tip under boron toxicity
Quantitative trait loci for reducing sugar concentration in the barley root tip under boron toxicity Open
Boron (B) is an essential trace element for higher plants yet it becomes toxic when present at high concentrations. The site of B toxicity in plant roots is located in the root tip, and B tolerance is associated with the concentration of r…
View article: Increased consumption of wheat biofortified with selenium does not modify biomarkers of cancer risk, oxidative stress, or immune function in healthy Australian males
Increased consumption of wheat biofortified with selenium does not modify biomarkers of cancer risk, oxidative stress, or immune function in healthy Australian males Open
Increased intake of selenium (Se) may reduce the risk of degenerative diseases including cancer but excessive intake may be toxic. Wheat is a major source of dietary Se in humans. However, the effect of Se from wheat that is agronomically …
View article: The effect of selenium, as selenomethionine, on genome stability and cytotoxicity in human lymphocytes measured using the cytokinesis-block micronucleus cytome assay
The effect of selenium, as selenomethionine, on genome stability and cytotoxicity in human lymphocytes measured using the cytokinesis-block micronucleus cytome assay Open
A supranutritional intake of selenium (Se) may be required for cancer prevention, but an excessively high dose could be toxic. Therefore, the effect on genome stability of seleno-L-methionine (Se-met), the most important dietary form of Se…
View article: The mechanism of boron tolerance for maintenance of root growth in barley (<i>Hordeum vulgare</i> L.)
The mechanism of boron tolerance for maintenance of root growth in barley (<i>Hordeum vulgare</i> L.) Open
Cultivar differences in root elongation under B toxic conditions were observed in barley ( Hordeum vulgare L.). A significant increase in the length and width of the root meristematic zone (RMZ) was observed in Sahara 3771 (B tolerant) whe…
View article: How to use the world's scarce selenium resources efficiently to increase the selenium concentration in food
How to use the world's scarce selenium resources efficiently to increase the selenium concentration in food Open
The world's rare selenium resources need to be managed carefully. Selenium is extracted as a by-product of copper mining and there are no deposits that can be mined for selenium alone. Selenium has unique properties as a semi-conductor, ma…
View article: Distribution and Remobilization of Iron and Copper in Wheat
Distribution and Remobilization of Iron and Copper in Wheat Open
The results reported here represent good evidence for the high reproductive mobility of both Fe and Cu in wheat.
View article: A critical analysis of the causes of boron toxicity in plants
A critical analysis of the causes of boron toxicity in plants Open
This study investigated the main factors contributing to boron toxicity in plants. Growth was rapidly inhibited by internal B concentrations in the range 1–5 m m across a range of plant types that included monocot, dicot and algal species.…
View article: Exploiting Micronutrient Interaction to Optimize Biofortification Programs: The Case for Inclusion of Selenium and Iodine in the<i>HarvestPlus</i>Program
Exploiting Micronutrient Interaction to Optimize Biofortification Programs: The Case for Inclusion of Selenium and Iodine in the<i>HarvestPlus</i>Program Open
Biofortification of staple food crops with micronutrients by either breeding for higher uptake efficiency or fertilization can be an effective strategy to address widespread dietary deficiency in human populations. Selenium and iodine defi…
View article: Breeding for micronutrients in staple food crops from a human nutrition perspective
Breeding for micronutrients in staple food crops from a human nutrition perspective Open
Over three billion people are currently micronutrient (i.e. micronutrient elements and vitamins) malnourished, resulting in egregious societal costs including learning disabilities among children, increased morbidity and mortality rates, l…
View article: Biofortification: a global challenge program
Biofortification: a global challenge program Open
This article 'Biofortification: a global challenge program' appeared in the International Rice Research Notes series, created by the International Rice Research Institute (IRRI) to expedite communication among scientists concerned with the…
View article: High-selenium wheat: biofortification for better health
High-selenium wheat: biofortification for better health Open
The metalloid Se is ubiquitous in soils, but exists mainly in insoluble forms in high-Fe, low-pH and certain leached soils, and hence is often of limited availability to plants. Consequently, it is often supplied by plants to animals and h…
View article: The efficiency of boron utilisation in canola
The efficiency of boron utilisation in canola Open
Boron (B) deficiency is a common abiotic stress in many countries and is known to reduce canola yields. Growing B-efficient canola cultivars on deficient soils can reduce the impact of this deficiency, but to date little is known of the me…
View article: The Consultative Group on International Agricultural Research (CGIAR) Micronutrients Project: Justification and Objectives
The Consultative Group on International Agricultural Research (CGIAR) Micronutrients Project: Justification and Objectives Open
The general objective of the Consultative Group on International Agricultural Research (CGIAR) Micronutrients Project is to assemble the package of tools that plant breeders will need to produce mineral- and vitamin-dense cultivars. The ta…
View article: Breeding for Trace Minerals in Wheat
Breeding for Trace Minerals in Wheat Open
In the search for genetic material with high iron and zinc concentration in wheat grain, a significant positive correlation has been found between iron and zinc concentrations, suggesting that these two traits may be combined relatively ea…
View article: A strategy for breeding staple-food crops with high micronutrient density
A strategy for breeding staple-food crops with high micronutrient density Open
Food-based approaches to addressing micronutrient malnutrition in much of the human population have hitherto been based mainly on balancing cereal-based diets with vegetables, and to a lesser extent, animal products. Although high in micro…
View article: Effects of Ni Deficiency on Some Nitrogen Metabolites in Cowpeas (<i>Vigna unguiculata</i> L. Walp)
Effects of Ni Deficiency on Some Nitrogen Metabolites in Cowpeas (<i>Vigna unguiculata</i> L. Walp) Open
Cowpeas grown in nutrient solutions, from which Ni had been removed by a ligand exchange technique, accumulated urea in most tissues. Urea levels were highest (up to 3.1 percent dry weight) in necrotic leaf tips. Urea accumulation in Ni-de…
View article: Effect of the Shoot on the Transmembrane Potentials of Root Cortical Cells of Sunflower
Effect of the Shoot on the Transmembrane Potentials of Root Cortical Cells of Sunflower Open
Transmembrane potentials (PD) of root cortical cells were measured between the vacuole and the external solution while the roots remained attached to the plants. External solution concentration was varied by using a range of dilutions of a…