Effect of metallic nanoparticles on functional and structural properties of the photosynthetic apparatus

金属纳米颗粒对光合器官功能和结构特性的影响

基本信息

批准号：
93404-2012
负责人：
Popovic, Radovan
金额：
$ 1.99万
依托单位：
Université du Québec à Montréal
依托单位国家：
加拿大
项目类别：
Discovery Grants Program - Individual
财政年份：
2012
资助国家：
加拿大
起止时间：
2012-01-01 至 2013-12-31
项目状态：
已结题

来源：
https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=506506
关键词：
Effect metallic nanoparticles functional structural

项目摘要

The regulation of photosystem II structure and electron transport activity is strongly affected by environmental factors such as the presence of different pollutants which cause inhibitory effects. In this research program, we attempt to understand in which way structure and functions of photosnthetic apparatus are accommodated to cope with those environmental conditions. The high sensitivity of photosynthetic processes towards environmental stress can be used for the development of bioanalytical tools to evaluate the toxicological risk of contaminants in the environment. Due to the recent development of nanotechnology and the possibility of nanomaterials being found in the environment, an evaluation of the possible effects of different types of nanoparticles on photosynthetic organisms was initiated.Our hypothesis is that, under those conditions, the mechanism of energy dissipation will reflect the specificity of the inhibition mechanism induced by nanoparticles. Our research objective is to study the relationships between the effects of inhibitors, nanoparticles induced under strong light intensity and energy dissipation mechanisms. By using highly advanced spectroscopic studies and biochemical methods, experiments will be done in vitro and in vivo conditions. Results obtained will provide information which can explain how plants can survive and tolerate nanoparticles toxicity effects under different light conditions. These results will contribute to fundamental knowledge concerning the interaction between inhibitory effects of some nanoparticles and on photosynthetic electron transport the necessity and to evaluate the reliability of toxicity biomarkers to identify nanoparticles-induced effects.

光系统II结构和电子传输活性的调节受到环境因素的强烈影响，例如引起抑制作用的不同污染物的存在。在这个研究项目中，我们试图了解光合器官的结构和功能如何适应这些环境条件。光合作用过程对环境胁迫的高度敏感性可用于开发生物分析工具来评估环境中污染物的毒理学风险。由于纳米技术的最新发展以及在环境中发现纳米材料的可能性，开始评估不同类型的纳米颗粒对光合生物可能产生的影响。我们的假设是，在这些条件下，能量耗散的机制将反映了纳米颗粒诱导的抑制机制的特异性。我们的研究目标是研究抑制剂、强光诱导的纳米颗粒的作用与能量耗散机制之间的关系。通过使用高度先进的光谱研究和生化方法，将在体外和体内条件下进行实验。获得的结果将提供可以解释植物如何在不同光照条件下生存并耐受纳米颗粒毒性作用的信息。这些结果将有助于了解一些纳米颗粒的抑制作用与光合电子传输之间相互作用的必要性，并有助于评估毒性生物标志物的可靠性，以识别纳米颗粒诱导的作用。