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.

到处都生长着Larrea tridentata（杂酚油灌木） 西南地区往往是重金属污染的地区。 样品 的杂酚油灌木收集高铜，铅 污染. Larrea根，茎和叶进行了分析， 金属. 这些数据证明了Larrea tridentata吸收 重金属污染土壤中的铜和铅。 的植物 积累的重金属污染物可以用于新兴的 称为植物修复技术。 植物修复技术 承诺成为目前唯一具有成本效益的工艺， 去除金属污染物的范围。 初步XAS数据是 以帮助阐明金属结合的复杂性质 在叶、根和茎组织中的机制。 获得的结果 有助于我们理解植物的能力， 螯合金属 这一知识将增加潜在的使用 杂酚油可缓解土壤重金属污染 植物修复应用。