http://dx.doi.org/10.1016/j.chemosphere.2013.04.093">
 

Document Type

Journal Article

Department/Unit

Department of Biology

Title

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

Language

English

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. © 2013.

Keywords

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

Publication Date

2013

Source Publication Title

Chemosphere

Volume

92

Issue

10

Start Page

1367

End Page

1374

Publisher

Elsevier

ISSN (print)

00456535

ISSN (electronic)

18791298

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