MOLECULAR LEVEL CHARACTERIZATION OF HEAVY METAL SPECIATION IN CREOSOTE TISSUE

杂酚油组织中重金属形态的分子水平表征

• 批准号: 6437680
• 负责人: JORGE GARDEA-TORRESDEY
• 金额: $ 14.32万
• 依托单位: STANFORD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2001
• 资助国家: 美国
• 起止时间: 2001-03-01 至 2002-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6437680
• 关键词: biomaterials; biomedical resource; plants; proteins; spectrometry; structural biology

Larrea tridentata (creosote bushes) are found growing throughout the southwest often in regions of heavy metal contamination. Samples of creosote bushes were collected with high copper, and lead contamination. Larrea roots, stems and leaves were analyzed for these metals. The data demonstrate Larrea tridentata's ability to uptake copper, and lead from heavy metal contaminated soils. Plants which accumulate heavy metal contaminants can be used in an emerging technique know as phytoremediation. Phytoremediation holds the promise of being the only cost effective process currently on the horizon for removing metal contaminates. Preliminary XAS data were obtained to help elucidate the complex nature of metal binding mechanisms in the leaves, roots and stem tissues. Results obtained have contributed to our understanding of the plants ability to sequester metals. This knowledge will increase the potential use of creosote to alleviate heavy metal contaminated soils in phytoremediation applications.

Larrea tridentata（杂酚油灌木）遍布各处 西南地区常处于重金属污染地区。 样品 收集的杂酚油灌木丛含有高铜和铅 污染。 对 Larrea 的根、茎和叶进行了分析 金属。 数据证明了 Larrea tridentata 的吸收能力 重金属污染土壤中的铜和铅。 植物有哪些 积累的重金属污染物可用于新兴的 技术称为植物修复。 植物修复拥有 承诺成为目前唯一具有成本效益的流程 去除金属污染物的地平线。 初步 XAS 数据为 获得有助于阐明金属结合的复杂性质 叶、根和茎组织中的机制。 获得的结果 有助于我们了解植物的能力 螯合金属。 这些知识将增加潜在的用途 杂酚油缓解土壤重金属污染 植物修复应用。