Bacteria associated with the extraradical mycelium of an arbuscular mycorrhizal fungus in an As/Cu polluted soil

Gonzalez-Chavez, M.D.A. and Newsam, R.J. and Linderman, R. and Dodd, J.C. and Valdez-Carrasco, J.M. (2008) Bacteria associated with the extraradical mycelium of an arbuscular mycorrhizal fungus in an As/Cu polluted soil. Agrociencia, 42 (1). pp. 1-10. ISSN 1405-3195. (The full text of this publication is not available from this repository)

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Abstract

Synergistic interactions between bacteria and arbuscular mycorrhizal fungi (AMF) occur under natural soil conditions; however, in polluted soils there is little information regarding these relationships. Microscopy was used to study the interaction between the hyphae of an AM fungus (Glomus claroideum BEG134 from an As/Cu polluted soil) and bacteria in polluted soil cultures. BacLight (TM) staining showed viable bacteria mainly in the runner hyphae of the fungus associated with plants (Holcus lanatus L.) growing in polluted soils. Transmission electron microscopy revealed that a morphologically different bacterial population was intimately associated with the extraradical mycelium (ERM). Bacteria were embedded in the mucilaginous outer layer, encrusted at the outer layer, between hyphal wall layers, and inside hyphae. Crystals, comprising precipitated metal, were observed outside the ERM. The ecological relevance of this bacteria-AMF interaction is discussed.

Item Type: Article
Uncontrolled keywords: Glomus claroideum; bacterial interaction; endosymbiosis; mycorrhizosphere; rhizosphere synergism
Subjects: S Agriculture
Divisions: Faculties > Science Technology and Medical Studies > School of Biosciences
Depositing User: Suzanne Duffy
Date Deposited: 04 Mar 2009 09:28
Last Modified: 10 Mar 2009 14:32
Resource URI: http://kar.kent.ac.uk/id/eprint/15116 (The current URI for this page, for reference purposes)
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