Please use this identifier to cite or link to this item: http://hdl.handle.net/2440/64366
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Type: Journal article
Title: The diversity of arbuscular mycorrhizas of selected Australian Fabaceae
Author: Tibbett, M.
Ryan, M.
Barker, S.
Chen, Y.
Denton, M.
Edmonds-Tibbett, T.
Walker, C.
Citation: Plant Biosystems, 2008; 142(2):420-427
Publisher: Editrice Compositori Bologna
Issue Date: 2008
ISSN: 1126-3504
1724-5575
Statement of
Responsibility: 
Mark Tibbett, Megan H. Ryan, Susan J. Barker, Yinglong Chen, Matthew D. Denton, Tamara Edmonds-Tibbett & Christopher Walker
Abstract: Members of the Australian native perennial Fabaceae have been little explored with regard to their root biology and the role played by arbuscular mycorrhizal (AM) fungi in their establishment, nutrition and long-term health. The ultimate goal of our research is to determine the dependency of native perennial legumes on their co-evolved AM fungi and conversely, the impact of AM fungal species in agricultural fields on the productivity of sown native perennial legume pastures. In this paper we investigate the colonisation morphology in roots and the AMF, identified by spores extracted from rhizosphere soil, from three replicate plots of each of the native legumes, Cullen australasicum, C. tenax and Lotus australis and the exotic legumes L. pedunculatus and Medicago sativa. The plants were grown in an agricultural field. The level and density of colonisation by AM fungi, and the frequency of intraradical and extraradical hyphae, arbuscules, intraradical spores and hyphal coils all differed between host plants and did not consistently differ between native and exotic species. However, there were strong similarities between species in the same genus. The three dominant species of AM fungi in rhizosphere soil also differed with host plant, but one fungus (Glomus mosseae) was always the most dominant. Sub-dominant AM species were the same between species in the same genus. No consistent differences in dominant spores were observed between the exotic and native Fabaceae species. Our results suggest that plant host influences the mycorrhizal community in the rhizosphere soil and that structural and functional differences in the symbiosis may occur at the plant genus level, not the species level or due to provenance.
Keywords: Mycorrhizal fungi; perennial pastures; spores; colonisation; legumes; Glomus mosseae; Acaulospora; Archaeospora trappei
Rights: © 2008 Societa Botanica Italiana
RMID: 0020108034
DOI: 10.1080/11263500802151124
Appears in Collections:Agriculture, Food and Wine publications

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