Saman Seneweera

Saman Seneweera
University of Melbourne | MSD · Department of Agriculture and Food Systems

PhD

About

241
Publications
50,095
Reads
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4,840
Citations
Introduction
Saman Seneweera conducts research into understand the climate stress on crops physiological processes aiming to increase the crop yield potential. He use range of techniques including genetics, proteomics, metabolomics and ionomics to identify new physiological traits for crop improvements.
Additional affiliations
May 2018 - May 2021
National Institute of Fundamental Studies - Sri Lanka
Position
  • Managing Director
Description
  • CEO/CFO
January 2017 - January 2017
University of Southern Queensland 
Position
  • Professor
January 2013 - April 2017
University of Southern Queensland 
Position
  • Professor (Associate)
Education
January 1991 - January 1994

Publications

Publications (241)
Article
Full-text available
Dietary deficiencies of zinc and iron are a substantial global public health problem. An estimated two billion people suffer these deficiencies, causing a loss of 63 million life-years annually. Most of these people depend on C3 grains and legumes as their primary dietary source of zinc and iron. Here we report that C3 grains and legumes have lower...
Article
Full-text available
Though rice is the predominant source of energy and micronutrients for more than half of the world population, it does not provide enough zinc (Zn) to match human nutritional requirements. Moreover, climate change, particularly rising atmospheric carbon dioxide concentration, reduces the grain Zn concentration. Therefore, rice biofortification has...
Article
The present paper reviews current knowledge on how changes of plant metabolism under elevated CO2 concentrations (e[CO¬2]) can affect the development of the glyphosate resistance of C3 and C4 weeds. Among the chemical herbicides, glyphosate, which is a non-selective and post-emergence herbicide, is currently the most widely used herbicide in global...
Article
Full-text available
Phytic acid (PA) is the primary phosphorus (P) storage compound in the seeds of cereals and legumes. Low PA crops, which are considered an effective way to improve grain nutrient availability and combat environmental issues relating to seed P have been developed using mutational and reverse genetics approaches. Here, we identify molecular mechanism...
Article
Zinc (Zn) is an important micronutrient in the human body, and health complications associated with insufficient dietary intake of Zn can be overcome by increasing the bioavailable concentrations in edible parts of crops (biofortification). Wheat (Triticum aestivum L) is the most consumed cereal crop in the world; therefore, it is an excellent targ...
Article
Photosynthesis in wheat (Triticum aestivum L.) pericarps may contribute appreciably to wheat grain yield. Consequently, we investigated the temporal variation of traits related to photosynthesis and sucrose metabolism in the pericarps and flag leaves of three wheat genotypes, Huandoy, Amurskaja 75 and Greece 25, which are reported to differ in expr...
Article
Full-text available
There are four main waste products produced during the harvesting and milling process of sugarcane: cane trash, molasses, bagasse and mill mud-boiler ash mixture. This study investigates the value proposition of different techniques currently not being adopted by the industry in the utilisation of these wastes. The study addresses the technical cha...
Chapter
Full-text available
Angiotensin converting enzyme 2 (ACE2) is the driving force of the protective arm of the renin angiotensin system (RAS). ACE2 plays an unequivocal role in counterbalancing the deleterious effects of the classical RAS comprising ACE. A protective role for ACE2 in antagonising tissue injury and fibrosis has been well characterised in mouse models of...
Book
Full-text available
This book contains 29 chapters focusing on wheat, maize and sorghum molecular breeding. It aims to contribute the latest understandings of the molecular and genetic bases of abiotic stress tolerance, yield and quality improvement of wheat, maize and sorghum to develop strategies for improving abiotic stress tolerance that will lead to enhance produ...
Article
Production of rice grains at non-toxic levels of arsenic (As) to meet the demands of an ever-increasing population is a global challenge. There is currently a lack of investigation into integrated approaches for decreasing As levels in rice agro-ecosystems. By examining the integrated iron-modified rice hull biochar (Fe-RBC) and water management ap...
Chapter
Global food security is threatened by increasing population growth and the adverse effects of climate change. Of all the cereals, rice is the third‐most‐important, being the primary carbohydrate source for more than 2 billion people. To sustain future demand, rice production must increase by at least 60% by 2050. A dramatic improvement in the yield...
Article
The health risks associated with ingestion of arsenic (As) via consumption of rice are a global concern. This study investigated the effects of integrated biochar (BC)-water management approaches to As stress and to associated health risks in rice. Rice cultivars, Jayanthi and Ishikari, were grown, irrigated with As-containing water (1 mg L⁻¹), und...
Chapter
This book contains 29 chapters focusing on wheat, maize and sorghum molecular breeding. It aims to contribute the latest understandings of the molecular and genetic bases of abiotic stress tolerance, yield and quality improvement of wheat, maize and sorghum to develop strategies for improving abiotic stress tolerance that will lead to enhance produ...
Conference Paper
Full-text available
Arsenic (As) is a class one human chronic carcinogen and also not an essential element to plant growth and development. More importantly, the bioavailability of As and its consequent accumulation in rice grains could increase under flooded conditions. A poly-tunnel experiment was carried out to investigate the effect of As in soil on plant physiolo...
Conference Paper
Full-text available
Carbon dioxide concentration [CO2] in the atmosphere has been progressively rising from approximately 280 μmol/mol during the pre-industrial era to a current average of approximately 410 μmol/mol and is predicted to increase by up to 500 – 1000 μmol/mol by the year 2100. Elevated atmospheric CO2 (eCO2) causes warmer temperatures and more frequent d...
Article
Arsenic (As) in rice agroecosystems causes a loss of both rice yield and quality of rice grains. In this study, an integrated approach of biochar (BC) and alternative water management is proposed to reduce As content while sustaining essential elemental concentrations in rice. The rice cultivar, Jayanthi, was grown, irrigated with 1 mg L − 1 of As-...
Article
This article addresses particle size reduction technologies currently available and their potential application in bioenergy production from waste biomass. It is believed the reduction of the particle size of biomass wastes to nano-scale will have a significant impact on the quality, quantity, and price of biofuels. Currently, these technologies ha...
Poster
Full-text available
Pratylenchus thornei is an economically damaging root-lesion nematode that has a world wide distribution. It is one of the major threats for wheat production in Australia and is particularly damaging in the northern grain region of the country. This nematode causes damage to root cells causing nutrient deficiency and water stress, which results in...
Article
Full-text available
Main conclusion Site-specific changes of photosynthesis, a relatively new concept, can be used to improve the productivity of critical food crops to mitigate the foreseen food crisis. Abstract Global food security is threatened by an increasing population and the effects of climate change. Large yield improvements were achieved in major cereal cro...
Article
Full-text available
An Amendment to this paper has been published and can be accessed via a link at the top of the paper.
Article
Full-text available
Human exposure to As through rice consumption is a worldwide health concern. There is an urgent need to either remediate As contaminated paddy soils, or to screen for low As accumulating rice varieties, thereby limiting the build up of As in their grains. This review presents a number of agronomic, physico-chemical, and biological approaches that m...
Article
Full-text available
Abstract The increasing [CO2] in the atmosphere increases crop productivity. However, grain quality of cereals and pulses are substantially decreased and consequently compromise human health. Meta‐analysis techniques were employed to investigate the effect of elevated [CO2] (e[CO2]) on protein, zinc (Zn), and iron (Fe) concentrations of major food...
Article
Full-text available
The response of wheat to elevated carbon dioxide concentration (e[CO2]) is likely to be dependent on nitrogen supply. To investigate the underlying mechanism of growth response to e[CO2], two wheat cultivars were grown under different carbon dioxide concentration [CO2] in a chamber experimental facility. The changes in leaf photosynthesis, C and N...
Experiment Findings
The response of wheat to elevated carbon dioxide concentration (e[CO2]) is likely to be dependent on nitrogen supply. To investigate the underlying mechanism of growth response to e[CO2], two wheat cultivars were grown under different carbon dioxide concentration [CO2] in a chamber experimental facility. The changes in leaf photosynthesis, C and N...
Article
Foxtail millet (Setaria italica) is a nutrient-rich food source traditionally grown in arid and semi-arid areas, as it is well adapted to drought climate. Yet there is limited information as how the crop responses to the changing climate. In order to investigate the response of foxtail millet to elevated [CO2] and the underlying mechanism, the crop...
Article
Full-text available
Human exposure to arsenic (As) through the consumption of rice (Oryza sativa L.) is a worldwide health concern. In this paper, we evaluated the major causes for high inorganic As levels in cooked rice foods, and the potential of post-harvesting and cooking options for decreasing inorganic As content in cooked rice, focusing particularly on As endem...
Article
Full-text available
Human exposure to arsenic (As) through the consumption of rice (Oryza sativa L.) is a worldwide health concern. In this paper, we evaluated the major causes for high inorganic As levels in cooked rice foods, and the potential of post-harvesting and cooking options for decreasing inorganic As content in cooked rice, focusing particularly on As endem...
Article
Full-text available
Photoperiod and temperature are two important environmental factors affecting vegetative growth and yield of rice. The varietal diversity based on the response to temperature and photoperiod during vegetative growth was determined in a core collection of 40 Sri Lankan traditional rice accessions (SLTRA) and 2 improved and 2 wild rice types in terms...
Poster
Full-text available
The global energy demand continues to grow while the available fossil fuel resources are limited. Usage of fossil fuels results in a net increase of carbon dioxide in the atmosphere, leading to global warming. Second-generation biofuel production from lignocellulosic biomass is a promising alternative. Sugarcane bagasse is the most abundant lignoce...
Chapter
Full-text available
The expected rise in [CO2] concentration from 400 to 550 μmol mol⁻¹ by the middle of this century will have a significant impact on crop productivity and quality. For C3 plant species, photosynthesis, biomass, and yield will be substantially increased at elevated CO2 levels, whereas only a small increase will be observed for C4 plants. For both C4...
Article
Improving the micronutrient content and reducing the phytic acid (PA) in major staple food crops through plant breeding techniques are considered sustainable strategies to increase micronutrient bioavailability. This study documents the variation in PA and zinc (Zn) contents within the natural genetic variation of rice using the World Rice Core col...
Conference Paper
Full-text available
Results Objectives • Develop an understanding of how photosynthesis of different functional group response to e[CO 2 ]. • Understanding different abiotic factors (temperature, drought, and nitrogen) associated with the photosynthetic response to e[CO 2 ]. • Understanding how photosynthetic acclimation to e[CO 2 ] is associated with leaf nitrogen.
Conference Paper
Full-text available
The determination of the necessary storage volume of rainwater harvesting systems (RHS) for a reliable water supplies for households is not a trivial task. In most areas, rainfall is seasonal, intermittent and highly variable throughout the year and dry periods could linger for a few weeks or months. In contrast, household water demand is relativel...
Article
Full-text available
Increase in atmospheric CO2 concentration [CO2 ] and ambient temperature associated with changing climatic conditions will have significant impacts on agriculture crop productivity and quality. Independent effects of the above two environmental variables on the growth, yield and quality of strawberry were well documented. Higher temperatures over t...
Article
Full-text available
Declines of protein and minerals essential for humans, including iron and zinc, have been reported for crops in response to rising atmospheric carbon dioxide concentration, [CO2]. For the current century, estimates of the potential human health impact of these declines range from 138 million to 1.4 billion, depending on the nutrient. However, chang...
Article
Thiolated arsenic compounds are the sulfur analogous substructures of oxo-arsenicals as the arsinoyl (As = O) is substituted by an arsinothioyl (As = S) group. Relatively brief history of thioarsenic research, mostly in the current decade has endeavored to understand their consequences in the natural environment. However, thioarsenic related aspect...
Chapter
Micronutrients play a pivotal role in the growth, development, and function in humans and plants. Despite their beneficial effects, micronutrient deficiencies pose serious threats to crop yield and nutritional quality, which, in turn cause deleterious effects on the health and well-being of humans. Many staples are inherently poor sources of micron...
Article
Rice is the main staple carbohydrate source for billions of people worldwide. Natural geogenic and anthropogenic sources has led to high arsenic (As) concentrations in rice grains. This is because As is highly bioavailable to rice roots under conditions in which rice is cultivated. A multifaceted and interdisciplinary understanding, both of short-t...
Chapter
Full-text available
The negative effects of climate change on crop and animal production are evident across the world, slowing agricultural growth rates and declining the production rate. The grain and grass quality are also observed to decline under climate change, as are important concentrations of proteins and most essential nutrients such as zinc and iron. It is f...
Conference Paper
Expected rising CO2 concentration from 390 to 550 L CO2 L-1 by middle of this century will have significant impact on crop productivity and quality. For C3 species, photosynthesis, biomass, and yield was substantially increased at elevated CO2, but little increase observed in C4. For both C4 and C3 species, stomatal conductance was significantly r...
Article
Full-text available
Myo-inositol hexaphosphate, also known as phytic acid (PA), is the most abundant storage form of phosphorus in seeds. PA acts as a strong chelator of metal cations to form phytate and is considered an anti-nutrient as it reduces the bioavailability of important micronutrients. Although the major nutrient source for more than one-half of the global...
Conference Paper
Full-text available
Annual ryegrass (Lolium rigidum Gaud.), a troublesome weed in winter cropping systems is likely to increase competitiveness with major crops under climate change. To test this hypothesis, we grew wheat (Triticum aestivum L. cv. Yitpi) and annual ryegrass to measure the level of competition and competition-mediated plant defence responses. The exper...
Poster
Full-text available
Wheat (Triticum aestivum) is one of the major sources of food in the world. Production of wheat is under threat due to the migratory, root-lesion nematode Pratylenchus thornei, particularly in the northern grain region of Australia. P. thornei causes nutrient deficiency and water stress in wheat, which results in 38 million dollars’ economic loss p...
Chapter
Full-text available
Plant growth and development are affected by various abiotic stresses like drought, submergence, salinity and high and low temperature. These abiotic stresses cause average yield losses of greater than 50% in a majority of crop plants. Food production needs to be doubled by 2050 to meet the growing demands of an increasing global population. Signif...
Conference Paper
Wheat is one of the three major grains in the world and the staple diet because of nutritive value, handiness in processing and cultivation. Among wheat, durum and bread wheat are widely cultivated in the world. In the development and growth of wheat, it is unclear about the effect of high CO2 condition on wheat, and there are concerns about the ef...
Article
Full-text available
Plant responses to atmospheric carbon dioxide will be of great concern in the future, as carbon dioxide concentrations ([CO2]) are predicted to continue to rise. Elevated [CO2] causes increased photosynthesis in plants, which leads to greater production of carbohydrates and biomass. Which organ the extra carbohydrates are allocated to varies betwee...
Conference Paper
The increase in atmospheric carbon dioxide concentration ([CO2]) has a profound effect on growth and yield of C3 crops. Increased photosynthetic rate, together with lower stomatal conductance, have been identified as the key factors that promote plant growth at elevated [CO2]. However, growth response to elevated [CO2] could not be completely expla...
Conference Paper
The rapid growth of the global population brings with it increasing demands on food production. In the coming decades the atmospheric carbon dioxide (CO2) concentration is predicted to increase, which will affect global food production both positively and negatively. Wheat, one of the world’s most produced and consumed crops, produces a greater yie...
Article
Full-text available
Rice, Oryza sativa L. is the staple food of half of the world's population, mostly in Asia. Therefore, it is essential to increase rice yield to meet the rising food demand by the year 2050. This target is further challenged by rising atmospheric temperature, rainfall extreme events and limited land availability. The designing of C4 rice along with...
Poster
Objectives: 1.To investigate the effects of various temperatures (15°C, 20°C, 25°C, 30°C) on the mycelial growth and macroconidial production of Fusarium isolates that cause Fusarium head blight (FHB) and crown rot (CR) on wheat varieties. 2. To study the host-pathogen interaction between 3 selected wheat varieties and 9 Fusarium isolates—6 isolate...
Article
Full-text available
Strawberry (Fragaria x ananassa Duch.) is one of the most popular edible fruit worldwide. Strawberries are generally cultivated in open fields or under protected cropping, and are available all year round. Consumers prefer fruit with a bright red color, sweet taste, and distinct aroma. Over the past two decades, strawberry has shown one of the high...