Differential distribution of and similar biochemical responses to different species of arsenic and antimony in Vetiveria zizanioides
- 31 October 2020
- journal article
- research article
- Published by Springer Science and Business Media LLC in Environmental Geochemistry and Health
- Vol. 42 (11), 3995-4010
- https://doi.org/10.1007/s10653-020-00658-4
Abstract
Vetiver grass (Vetiveria zizanioides L. Nash) has a great application potential to the phytoremediation of heavy metals pollution. However, few studies explored the bioavailability and distribution of different speciations of As and Sb in V. zizanioides. This study aimed to clarify the allocation and accumulation of two inorganic species arsenic (As(III) and As(V)) and antimony (Sb(III) and Sb(V)) in V. zizanioides, to understand the self-defense mechanisms of V. zizanioides to these metal(loids) elements. Thus, an experiment was conducted under greenhouse conditions to identify distribution of As and Sb in plant roots and shoots. Antioxidant enzymes (superoxide dismutase, SOD) and changes of subcellular structures were tested to evaluate metal(loids) tolerance capacities of V. zizanioides. This study demonstrated that V. zizanioides had higher capacity to accumulate Sb than As. For Sb absorption, Sb(III) content is significantly higher than Sb(V) in tissues of V. zizanioides under all concentration levels, despite the oxidation of Sb(III) on the nutrient solution surface. Additional Sb was mainly accumulated in plant roots due to Sb immobilization by transforming it into precipitates. As was more easily transferred to aerial tissues and had low accumulation rates, probably due to its restricted uptake rather than restricted transport. In many cases, two inorganic species of As and Sb showed almost same biotoxicity to V. zizanioides estimated from its biomass, SOD activity, and MDA content as well as functional groups. In summary, the results of this study provide new insights into understanding allocation, accumulation and phytotoxicity effects of arsenic and antimony in V. zizanioides. [GRAPHICS] .Keywords
Funding Information
- The National Natural Science Foundation of China (31672262; 31802350)
- Fundamental Research Funds for the Central Universities (19lgzd28)
- the Hundred Talents Program through Sun Yat-sen University (38000-18821107)
This publication has 73 references indexed in Scilit:
- Arsenic hazards in coal fly ash and its fate in Indian scenarioResources, Conservation and Recycling, 2011
- Induction of Lead‐Binding Phytochelatins in Vetiver Grass [Vetiveria zizanioides (L.)]Journal of Environmental Quality, 2009
- Antimony uptake by different plant species from nutrient solution, agar and soilEnvironmental Chemistry, 2009
- Transporters of arsenite in rice and their role in arsenic accumulation in rice grainProceedings of the National Academy of Sciences of the United States of America, 2008
- Aquaglyceroporins: ancient channels for metalloidsJournal of Biology, 2008
- The Role of Mycorrhizae Associated with Vetiver Grown in Pb‐/Zn‐Contaminated Soils: Greenhouse StudyRestoration Ecology, 2007
- Modelling chronic exposure to contaminated soil: A toxicokinetic approach with the terrestrial snail Helix aspersaEnvironment International, 2006
- A critical analysis of the causes of boron toxicity in plantsPlant, Cell & Environment, 2004
- Phosphate transport in Arabidopsis: Pht1;1 and Pht1;4 play a major role in phosphate acquisition from both low‐ and high‐phosphate environmentsThe Plant Journal, 2004
- The occurrence of superoxide anion in the reaction of reduced phenazine methosulfate and molecular oxygenBiochemical and Biophysical Research Communications, 1972