Understanding the Influence of Zinc on Grain Cadmium Accumulation and Bioaccessibility in Rice
type: CreativeWork
description: The effect of cadmium and zinc on mineral concentrations in three cultivars of rice Interactions between the essential mineral zinc (Zn) and the toxic heavy metal cadmium (Cd) play an important role in regulating transport of both minerals to rice grains. Understanding these interactions is crucial for limiting cadmium and increasing zinc transfer to the food chain. Previous studies on the matter have had conflicting results suggesting synergistic and antagonistic relationships between the minerals. The goal of this work was to identify the effect of external cadmium and zinc on the uptake and translocation of both minerals from roots to grains of rice that differ in grain cadmium concentrations. Our results suggest zinc affects cadmium translocation and accumulation to the grain while cadmium does not have an effect on zinc. Cadmium synergy or antagonism with other essential minerals were also recorded and differed between rice lines. Differential expression of established transport proteins OsNramp5, OsHMA2, and OsHMA3, play a vital role in contributing to differences in grain cadmium. These results add to the knowledge of cadmium and zinc transport in one of the most consumed plant foods in the world and can assist fortification efforts to establish rice lines that are both safe and nutritious. The effect of exogenous cadmium and zinc applications on cadmium, zinc, and essential mineral bioaccessibility in three lines of rice that differ in grain cadmium concentration Diets high in cadmium (Cd) and low in zinc (Zn) threaten human health. While both are detrimental to the well-being of millions globally, diets affected by both simultaneously are especially dangerous as the impacts are exaggerated. Rice is particularly adept at accumulating high concentrations of cadmium and low concentrations of zinc in grains. Several strategies to limit cadmium and increase zinc from rice grain have been explored but total mineral concentration in rice grain is an unreliable mea…
abstract: The effect of cadmium and zinc on mineral concentrations in three cultivars of rice Interactions between the essential mineral zinc (Zn) and the toxic heavy metal cadmium (Cd) play an important role in regulating transport of both minerals to rice grains. Understanding these interactions is crucial for limiting cadmium and increasing zinc transfer to the food chain. Previous studies on the matter have had conflicting results suggesting synergistic and antagonistic relationships between the minerals. The goal of this work was to identify the effect of external cadmium and zinc on the uptake and translocation of both minerals from roots to grains of rice that differ in grain cadmium concentrations. Our results suggest zinc affects cadmium translocation and accumulation to the grain while cadmium does not have an effect on zinc. Cadmium synergy or antagonism with other essential minerals were also recorded and differed between rice lines. Differential expression of established transport proteins OsNramp5, OsHMA2, and OsHMA3, play a vital role in contributing to differences in grain cadmium. These results add to the knowledge of cadmium and zinc transport in one of the most consumed plant foods in the world and can assist fortification efforts to establish rice lines that are both safe and nutritious. The effect of exogenous cadmium and zinc applications on cadmium, zinc, and essential mineral bioaccessibility in three lines of rice that differ in grain cadmium concentration Diets high in cadmium (Cd) and low in zinc (Zn) threaten human health. While both are detrimental to the well-being of millions globally, diets affected by both simultaneously are especially dangerous as the impacts are exaggerated. Rice is particularly adept at accumulating high concentrations of cadmium and low concentrations of zinc in grains. Several strategies to limit cadmium and increase zinc from rice grain have been explored but total mineral concentration in rice grain is an unreliable mea…
author: Tavarez, Michael A.
keywords: Agriculture, Biology, Food Science, Laboratory and Basic Science Research, Molecular Biology, Rice, Cadmium, Zinc, Bioaccessibility
date published: 2021-09-01T07:00:00Z
date modified: 2026-07-24T01:59:21Z
provider: City University of New York - Graduate Center
publisher: Networked Digital Library of Theses and Dissertations
type: WebPage
source organization: The Graduate School and University Center of The City University of New York