Arsenic in the hyperaccumulator Pteris vittata: A review of benefits, toxicity, and metabolism

0584267 - BC 2024 RIV NL eng J - Článek v odborném periodiku
Zhao, F. - Han, Y. - Shi, H. - Wang, G. - Zhou, Ming-Xi - Chen, Y.
Arsenic in the hyperaccumulator Pteris vittata: A review of benefits, toxicity, and metabolism.
Science of the Total Environment. Roč. 896, OCT 2023 (2023), č. článku 165232. ISSN 0048-9697. E-ISSN 1879-1026
Institucionální podpora: RVO:60077344
Klíčová slova: Pteris vittata * Arsenic * Hormesis * Phytoremediation * Elemental defense * Vacuolar sequestration
Obor OECD: Biochemistry and molecular biology
Impakt faktor: 9.8, rok: 2022
Způsob publikování: Open access
https://www.sciencedirect.com/science/article/pii/S004896972303855X?via%3Dihub

Arsenic (As) is a toxic metalloid, elevated levels of which in soils are becoming a major global environmental issue that poses potential health risks to humans. Pteris vittata, the first known As hyperaccumulator, has been successfully used to remediate As-polluted soils. Understanding why and how P. vittata hyperaccumulates As is the core theoretical basis of As phytoremediation technology. In this review, we highlight the beneficial effects of As in P. vittata, including growth promotion, elemental defense, and other potential benefits. The stimulated growth of P. vittata induced by As can be defined as As hormesis, but differs from that in non-hyperaccumulators in some aspects. Furthermore, the As coping mechanisms of P. vittata, including As uptake, reduction, efflux, translocation, and sequestration/detoxification are discussed. We hypothesize that P. vittata has evolved strong As uptake and translocation capacities to obtain beneficial effects from As, which gradually leads to As accumulation. During this process, P. vittata has developed a strong As vacuolar sequestration ability to detoxify overloaded As, which enables it to accumulate extremely high As concentrations in its fronds. This review also provides insights into several important research gaps that need to be addressed to advance our understanding of As hyperaccumulation in P. vittata from the perspective of the benefits of As.
Trvalý link: https://hdl.handle.net/11104/0352342