Mechanisms of efficient As solubilization in soils and As accumulation by As-hyperaccumulator Pteris vittata.

Yong-He Han, Xue Liu, Bala Rathinasabapathi, Hong-Bo Li, Yanshan Chen, Lena Q Ma

Journal: Environmental pollution (Barking, Essex : 1987) 2017;227():569-577

PMID: 28501771

Full Text on Elsevier Science View on PubMed

Abstract

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 phytoremediation by P. vittata.

Address: State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu, 210046, China.; Horticultural Sciences Department, University of Florida, Gainesville, FL, 32611, United States.; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu, 210046, China. Electronic address: [email protected].; State Key Laboratory of Pollution Control and Resource Reuse, School of the Environment, Nanjing University, Jiangsu, 210046, China; Soil and Water Science Department, University of Florida, Gainesville, FL, 32611, United States. Electronic address: [email protected].

DOI: 10.1016/j.envpol.2017.05.001