Interactions of mycorrhizal fungi with Pteris vittata (As hyperaccumulator) in As-contaminated soils

H. M. Leung, Z. H. Ye, M. H. Wong*

*Corresponding author for this work

Research output: Contribution to journalJournal articlepeer-review

120 Citations (Scopus)

Abstract

A greenhouse trial was conducted to investigate the role of arbuscular mycorrhizas (AM) in aiding arsenic (As) uptake and tolerance by Pteris vittata (As hyperaccumulator) and Cynodon dactylon (a multi-metal root accumulator). Plants inoculated with lived and killed native mycorrhizas isolated from an As mine site were grown in a sterile and slightly acidic soil. The infectious percentage of mycorrhizas (0 mg/kg As: 26.4%, 50 mg/kg As: 30.3%, 100 mg/kg As: 40.6%) and the average biomass of shoots in infected P. vittata increased (0 mg/kg As: 2.45 g/pot, 50 mg/kg As: 2.48 g/pot, 100 mg/kg As: 10.9 g/pot) according to the increase of As levels when compared to control. The indigenous mycorrhizas enhanced As accumulation (0 mg/kg As: 3.70 mg/kg, 50 mg/kg As: 58.3 mg/kg; 100 mg/kg As: 88.1 mg/kg) in the As mine populations of P. vittata and also sustained its growth by aiding P absorption. For C. dactylon, As was mainly accumulated in mycorrhizal roots and translocation to shoots was inhibited.

Original languageEnglish
Pages (from-to)1-8
Number of pages8
JournalEnvironmental Pollution
Volume139
Issue number1
DOIs
Publication statusPublished - Jan 2006

Scopus Subject Areas

  • Toxicology
  • Pollution
  • Health, Toxicology and Mutagenesis

User-Defined Keywords

  • Arsenic
  • Brake fern
  • Hyperaccumulator
  • Mycorrhizae
  • Phosphate

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