Back to Search
Start Over
Physiological responses, tolerance efficiency, and phytoextraction potential of Hylotelephium spectabile (Boreau) H. Ohba under Cd stress in hydroponic condition.
- Source :
-
International Journal of Phytoremediation . 2021, Vol. 23 Issue 1, p80-88. 9p. - Publication Year :
- 2021
-
Abstract
- A sand hydroponic experiment with different concentrations of 0, 5, 10, 20, 40 mg L−1 Cd was used to study the growth and physiological response of Hylotelephium spectabile (Boreau) H. Ohba. and its phytoextraction potential for Cd. The results showed that total plant biomass under 5 mg L−1 Cd treatment was slightly affected. The content of malondialdehyde (MDA) in leaf exposed to Cd was higher, and the POD and CAT activity exhibited a positive response to the low level of Cd addition (5 mg·L−1). The photosynthesis pigments were slightly inhibited, and the ultrastructure of chloroplast remained intact after treatment with 10 mg L−1 Cd. The maximum leaf Cd content (603 mg·kg−1) was found in 5 mg L−1 Cd treatment, then decreased with the Cd level increased. The maximum Cd content in the shoots far exceeds the threshold level (100 mg kg−1) for a Cd-hyperaccumulator plant with the value of translocation factor (TFshoot/root) for Cd reaching up to 5.62. In conclusion, H. spectabile showed normal growth and physiological response and high shoot Cd accumulation under 5 mg L−1 Cd stress, which made it to be a good candidate for phytoextraction of low-level Cd polluted environment. [ABSTRACT FROM AUTHOR]
Details
- Language :
- English
- ISSN :
- 15226514
- Volume :
- 23
- Issue :
- 1
- Database :
- Academic Search Index
- Journal :
- International Journal of Phytoremediation
- Publication Type :
- Academic Journal
- Accession number :
- 148040124
- Full Text :
- https://doi.org/10.1080/15226514.2020.1797628