State Key Laboratory of Plant Cell and Chromosome Engineering, Center of Agricultural Resources Research, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Shijiazhuang, Hebei 050021, China.
Environ Sci Technol. 2009 Nov 15;43(22):8488-95. doi: 10.1021/es9014647.
Arsenic (As) contaminated soils and waters are becoming major global environmental and human health risks. The identification of natural hyperaccumulators of As opens the door for phytoremediation of the arsenic contaminant. Pteris vittata is the first identified naturally evolving As hyperaccumulator. More than a decade after its discovery, we have made great progress in understanding the uptake, transport, and detoxification of As in the fern. The molecular mechanisms controlling As accumulation in P. vittata are now beginning to be recognized. In this review, we will try to summarize what we have learned about this As accumulator, with particular emphasis on the current knowledge of the physiological and molecular mechanisms of arsenic phytoremediation. We also discuss the potential strategies to further enhance phytoextraction abilities of P. vittata.
砷（As）污染的土壤和水正成为全球主要的环境和人类健康风险。砷的天然超富集植物的发现为砷污染物的植物修复开辟了道路。蜈蚣草是第一个被发现的自然进化的砷超富集植物。在发现后的十多年里，我们在理解蕨类植物对砷的吸收、运输和解毒方面取得了很大的进展。控制蜈蚣草砷积累的分子机制现在开始被认识。在这篇综述中，我们将试图总结我们对这种砷积累植物的了解，特别强调砷的生理和分子机制的植物修复的当前知识。我们还讨论了进一步提高蜈蚣草植物提取能力的潜在策略。
