Mixed arbuscular mycorrhizal (AM) fungal application to improve growth and arsenic accumulation of Pteris vittata (As hyperaccumulator) grown in As-contaminated soil

H. M. LEUNG, A. O. W. LEUNG, Z. H. YE, K. C. CHEUNG, Kin Lam Ken YUNG

Research output: Contribution to journalArticlespeer-review

39 Citations (Scopus)

Abstract

A greenhouse pot experiment was conducted to study the effects of three types of single inoculum [indigenous mycorrhizas (IM) isolated from As mine, Glomus mosseae (GM) and Glomus intraradices (GI)] and two types of mixed inoculum (mixed with IM and either GM or GI) on the growth response of Pteris vittata (hyperaccumulator) and Cynodon dactylon (non-hyperaccumulator) at three levels of As concentrations (0, 100 and 200mgkg-1). Both mycorrhizal plants exhibited significantly higher biomass, and N and P accumulation in its tissue than the control. Among the mycorrhizal inoculum, the mixed inoculum IM/GM promoted substantially higher mycorrhizal colonization and arsenate reductase activity in P. vittata than C. dactylon, among all As levels. The portion of Paris arbuscular mycorrhizal structure (observed in colonized roots) together with the highest As translocation factor of 10.2 in P. vittata inoculated with IM/GM was also noted. It was deduced that IM/GM inoculum may be the best choice for field inoculation at any contaminated lands as the inoculum exhibited better adaptation to variable environmental conditions and hence benefited the host plants. Copyright © 2013 Published by Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)1367-1374
JournalChemosphere
Volume92
Issue number10
Early online dateJun 2013
DOIs
Publication statusPublished - Aug 2013

Citation

Leung, H. M., Leung, A. O. W., Ye, Z. H., Cheung, K. C., & Yung, K. K. L. (2013). Mixed arbuscular mycorrhizal (AM) fungal application to improve growth and arsenic accumulation of Pteris vittata (As hyperaccumulator) grown in As-contaminated soil. Chemosphere, 92(10), 1367-1374. https://doi.org/10.1016/j.chemosphere.2013.04.093

Keywords

  • Phytoremediation
  • Indigenous mycorrhiza
  • Arsenate reductase (AR)
  • Arsenic translocation factor
  • Glomus mosseae
  • Arsenic

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