Mechanisms of efficient As solubilization in soils and As accumulation by As-hyperaccumulator Pteris vittata
2017
Han, Yong-He | Liu, Xue | Rathinasabapathi, Bala | Li, Hongbo | Chen, Yanshan | Ma, Lena Q.
Arsenic (As) in soils is of major environmental concern due to its ubiquity and carcinogenicity. Pteris vittata (Chinese brake fern) is the first known As-hyperaccumulator, which is highly efficient in extracting As from soils and translocating it to the fronds, making it possible to be used for phytoremediation of As-contaminated soils. In addition, P. vittata has served as a model plant to study As metabolisms in plants. Based on the recent advances, we reviewed the mechanisms of efficient As solubilization and transformation in rhizosphere soils of P. vittata and effective As uptake, translocation and detoxification in P. vittata. We also provided future research perspectives to further improve As hyperaccumulation by P. vittata.
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