【水稻高砷含量与人体健康】Mayukh Banerjee Nilanjana Banerjee Pritha Bhattacharjee Debapriya Mondal Paul R. Lythgoe Mario Martínez Jianxin Pan David A. Polya & Ashok K. Giri. High arsenic in rice is associated with elevated genotoxic effects in humans. Scientific Reports 3 Article number: 2195 doi:10.1038-srep02195
Abstract
Arsenic in drinking water may cause major deleterious health impacts including death. Although arsenic in rice has recently been demonstrated to be a potential exposure route for humans there has been to date no direct evidence for the impact of such exposure on human health. Here we show for the first time through a cohort study in West Bengal India involving over 400 human subjects not otherwise significantly exposed to arsenic through drinking water elevated genotoxic effects as measured by micronuclei (MN) in urothelial cells associated with the staple consumption of cooked rice with >200 μg-kg arsenic. Further work is required to determine the applicability to populations with different dietary and genetic characteristics but with over 3 billion people in the world consuming rice as a staple food and several percent of this rice containing such elevated arsenic concentrations this study raises considerable concerns over the threat to human health.
【过渡金属对作物细菌性病害的影响】Helen Fones Gail M. Preston. The impact of transition metals on bacterial plant disease. FEMS Microbiology Reviews
Abstract
Metals play essential roles in many biological processes but are toxic when present in excess. This makes their transport and homoeostatic control of particular importance to living organisms. Within the context of plant–pathogen interactions the availability and toxicity of transition metals can have a substantial impact on disease development. Metals are essential for defensive generatio