Study Shows Warmer Temperatures, Can Lead to Higher Concentrations of Arsenic in Rice Grains
People all over the world devour rice in their everyday diets. However, along with its nutrient and caloric content material, rice can include small amounts of arsenic, which in large doses is a toxin related to a number of health situations and dietary-related cancers.
Now researchers on the University of Washington have discovered that warmer temperatures, at ranges expected underneath most climate change projections, can result in increased concentrations of arsenic in rice grains. The group will present these findings Dec. 10 on the American Geophysical Union’s Fall Meeting in San Francisco.
Arsenic happens naturally within the soil, although its focus is increased in areas that have traditionally used arsenic-based herbicides or the place irrigation water comprises arsenic. When farmers develop crops like rice underneath flooded circumstances, arsenic is drawn out of the soil and into the water.
To determine whether or not rice would draw up extra arsenic below hotter circumstances, the group collected soil from a paddy field in California. Again in Seattle, the researchers grew rice on this soil in temperature-controlled growth chambers.
Because the temperature increased, the group noticed increased uptake of arsenic to each a part of the plant the researchers looked at—including the rice grains.
Arsenic can be very toxin for rice plants too; they usually have mechanisms to guard themselves in opposition to higher levels of it. One methodology contains turning on a protein that sequesters arsenic in particular cells and tissues of the plant. However, when the researchers measured expression levels of this protein of their plants at higher temperatures, they noticed no difference in comparison with the plants grown at today’s relatively low temperatures.