The effect of arbuscular mycorrhizal fungi and phosphate amendement on arsenic uptake, accumulation and growth of pteris vittata in as-contaminated soil

Ho Man LEUNG, Fu Yong WU, Kwai Chung CHEUNG, Zhi Hong YE, Ming Hung WONG

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Abstract

This study investigated the contributions of mixed arbuscular mycorrhizal fungi (AMF) inoculum-i.e., mixed populations of indigenous mycorrhiza (Glomus intraradices, Glomus geosporum, Glomus mosseae) (IM) isolated from arsenic (As) contaminated soil and non-indigenous mycorrhiza such as G. mosseae (GM), which possess metal tolerance characteristics-and the addition of phosphate rock (PR) towards the uptake and accumulation of As by Pteris vittata (As hyperaccumlator) grown in As-contaminated soil. Regardless of As levels added to soil, plant growth was substantially improved in amended treatments when compared with the control. In addition, root surface area (0 mg/kg As: 15.2 cm²; 150 mg/kg As: 16.9 cm²; 300 mg/kg As: 20.7 cm²), chlorophyll contents (0 mg/kg As: 1.16 mg/g; 150 mg/kg As: 1.46 mg/g; 300 mg/kg As: 1.81 mg/g) and As translocation factor (0 mg/kg As: 0; 150 mg/kg As: 4.29; 300 mg/kg As: 5.22) in P. vittata of PR+IM/GM were also increased. Such combination could further enhance plant growth (indicated by higher N, P and chlorophyll contents) and As uptake by P. vittata. Copyright © 2010 Taylor & Francis Group, LLC.

Original languageEnglish
Pages (from-to)384-403
JournalInternational Journal of Phytoremediation
Volume12
Issue number4
DOIs
Publication statusPublished - 01 Apr 2010

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Citation

Leung, H. M., Wu, F. Y., Cheung, K. C., Ye, Z. H., & Wong, M. H. (2010). The effect of arbuscular mycorrhizal fungi and phosphate amendement on arsenic uptake, accumulation and growth of pteris vittata in as-contaminated soil. International Journal of Phytoremediation, 12(4), 384-403. doi: 10.1080/15226510903051740

Keywords

  • Arsenic
  • Brake fern
  • Hyperaccumulator
  • Mycorrhizae
  • Chlorophyll