Record ID No. |
2483 |
Author(s) |
Leung H M., Wu F Y., Cheung K C., Ye Z H., Wong M H. , 2010 |
Affiliation |
Croucher Institute for Environmental Sciences, Department of Biology, Hong Kong Baptist University, Kowloon, Hong Kong. mhwong@hkbu.edu.hk |
Title |
Synergistic effects of arbuscular mycorrhizal fungi and phosphate rock on heavy metal uptake and accumulation by an arsenic hyperaccumulator |
Source. Vol.(no):Page |
Journal of Hazardous Materials. 181(1/3):497-507p. |
Categories |
Arbuscular Mycorrhiza |
Subjects |
Soil plant relations |
Sub-subjects |
Heavy Metals |
Host |
Pteris vittata, Cynodon dactylon |
Organism |
Glomus mosseae |
Country |
Hong Kong, Asia |
Abstracts |
The effects of arbuscular mycorrhizal (AM) fungi and phosphate rock on the phytorextraction efficiency of a hyperaccumulator (Pteris vittata) and a non-hyperaccumulator (Cynodon dactylon) plant were studied. Both seedlings were planted in As contaminated soil under different treatments {(1) control (contaminated soil only), (2) indigenous mycorrhizas (IM), (3) mixed AM inoculum [indigenous mycorrhiza+Glomus mosseae (IM/Gm)] and (4) IM/Gm+phosphate rock (P rock)} with varying intensities (40%, 70% and 100%) of water moisture content (WMC). Significant As reduction in soil (23.8% of soil As reduction), increase in plant biomass (17.8 g/pot) and As accumulation (2054 mg/kg DW) were observed for P. vittata treated with IM/Gm + PR at 100% WMC level. The overall results indicated that the synergistic effect of mycorrhiza and P rock affected As subcellular distribution of the hyperaccumulator and thereby altered its As removal efficiency under well-watered conditions. |