Department of Environmental Science, Ateneo de Manila University, Quezon City, Philippines.
Department of Environmental Science, Ateneo de Manila University, Quezon City, Philippines; Institute of Biology, University of the Philippines, Diliman, Quezon City, Philippines.
Chemosphere. 2019 Dec;236:124380. doi: 10.1016/j.chemosphere.2019.124380. Epub 2019 Jul 20.
Pteris melanocaulon is noted to thrive very well in selected Cu-Au mines in the Philippines such as the Carmen Cu mine in Cebu and the Manila Mining Cu-Au mine in Surigao. Soil and plant samples were collected from field surveys as well as potted experiments. The computed bioaccumulation factor (BF) and translocation factor (TF) values from the analyses of As contents of the soil and the belowground and above ground components of the plant, apparently were comparable to known As hyperaccumulators Pteris vittata and Pityrogramma calomelanos. It is inferred with probability that the factors that influence the bioavailability of As as well as the uptake mechanisms for P. melanocaulon would be similar to the 2 known As hyperaccumulators. Previous works have noted P. melanocaulon as a very good Cu accumulator with very high Cu values in the belowground components and this study further identified it to be an excellent As hyperaccumulator with high As values in the aboveground components.
观音座莲在菲律宾的一些铜金矿中生长得很好，如宿务的卡门铜矿和苏里高的马尼拉矿业铜金矿。土壤和植物样本是从实地调查和盆栽实验中收集的。通过对土壤和植物地下及地上部分的砷含量进行分析，计算出的生物积累因子（BF）和迁移因子（TF）值与已知的砷超富集植物蜈蚣蕨和瓜皮草相当。可以有一定把握地推断，影响砷生物有效性的因素以及观音座莲对砷的吸收机制与这两种已知的砷超富集植物相似。以前的研究表明，观音座莲是一种很好的铜积累植物，其地下部分的铜含量非常高，本研究进一步证实它是一种极好的砷超富集植物，地上部分的砷含量很高。
