Publication: Effects of Drought Stress on the Growth and Heavy Metal Accumulation by Chromolaena odorata Grown in Hydroponic Media
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Issued Date
2022
Resource Type
Language
eng
File Type
application/pdf
ISSN
74861
Rights Holder(s)
Scopus
Bibliographic Citation
Bulletin of Environmental Contamination and Toxicology. (2022)
Suggested Citation
Saeng-Ngam S., Jampasri K. Effects of Drought Stress on the Growth and Heavy Metal Accumulation by Chromolaena odorata Grown in Hydroponic Media. Bulletin of Environmental Contamination and Toxicology. (2022). doi:10.1007/s00128-021-03401-6 Retrieved from: https://hdl.handle.net/20.500.14740/10317
Author(s)
Abstract
This study aimed to investigate the effects of drought stress on cadmium (Cd) and zinc (Zn) accumulation in Chromolaena odorata grown in an artificially contaminated nutrient solution for 15 days. Polyethylene glycol (5% PEG) was used as a drought stressor. The presence of PEG did not affect the chlorophyll content and photochemical efficiency, while drought stress induced by PEG caused a decrease in water content in the plant tissues. The bioaccumulation factor (BAF) of Cd were higher than the BAF of Zn and accumulated mainly in the roots of C. odorata. The highest concentrations (4273.7 mg/kg Cd, 2135.4 mg/kg Zn) were found in the 20 mg/L treatment. The results suggested that Cd and Zn accumulation in C. odorata was not affected by PEG, while a translocation factor (TF) value < 1 was caused by either PEG or contaminants. Based on the hydroponic BAF criterion, the study confirmed that C. odorata was useful for phytoremediation of Cd with low drought stress. © 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.