Synergistic effects of arbuscular mycorrhizal fungi and phosphate rock on heavy metal uptake and accumulation by an arsenic hyperaccumulator

H. M. LEUNG, F. Y. WU, K. C. CHEUNG, Z. H. YE, Ming Hung WONG

Research output: Contribution to journalArticles

33 Citations (Scopus)

Abstract

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. Copyright © 2010 Elsevier B.V. All rights reserved.

Original languageEnglish
Pages (from-to)497-507
JournalJournal of Hazardous Materials
Volume181
Issue number1-3
DOIs
Publication statusPublished - 15 Sep 2010

Citation

Leung, H. M., Wu, F. Y., Cheung, K. C., Ye, Z. H., & Wong, M. H. (2010). Synergistic effects of arbuscular mycorrhizal fungi and phosphate rock on heavy metal uptake and accumulation by an arsenic hyperaccumulator. Journal of Hazardous Materials, 181(1-3), 497-507. doi: 10.1016/j.jhazmat.2010.05.042

Keywords

  • Phytoextraction
  • Arsenic
  • Hyperaccumulator
  • Mycorrhizae
  • Phosphate

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