Pterostylis nutans (Orchidaceae) has a specific association with two ceratobasidium root-associated fungi across its range in eastern Australia

Irwin, Mathew John and Bougoure, Jeremy James and Dearnaley, John David William (2007) Pterostylis nutans (Orchidaceae) has a specific association with two ceratobasidium root-associated fungi across its range in eastern Australia. Mycoscience, 48. pp. 231-239. ISSN 1340-3540

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Abstract

In this study, we have identified the root-associated fungi of a common species of terrestrial orchid across its range in eastern Australia. We have amplified and cloned fungal ITS DNA extracted from roots of 15 Pterostylis nutans R. Br. plants from six separate geographic localities. Sequencing and GenBank comparison demonstrated two species of Ceratobasidium fungi as the main fungal partners of the orchid. Uncommon fungal associates included homobasidiomycete species such as a Gymnomyces sp. and a Tricholoma sp., Leptodontidium orchidicola, and an unidentified soil fungus. These results demonstrate that specifi city for fungal partners occurs in P. nutans and reinforces the idea that conservation measures for endangered Australian orchids must include ex situ perpetuation of fungal symbionts as well as plant material.


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Item Type: Article (Commonwealth Reporting Category C)
Refereed: Yes
Item Status: Live Archive
Additional Information: The original publication is available at www.springerlink.com
Depositing User: Ms Debbie White
Faculty / Department / School: Historic - Faculty of Sciences - Department of Biological and Physical Sciences
Date Deposited: 11 Oct 2007 01:20
Last Modified: 02 Jul 2013 22:49
Uncontrolled Keywords: australian terrestrial orchids, Ceratobasidium,internal transcribed spacer (ITS), orchid mycorrhizas
Fields of Research (FOR2008): 06 Biological Sciences > 0699 Other Biological Sciences > 069999 Biological Sciences not elsewhere classified
06 Biological Sciences > 0605 Microbiology > 060505 Mycology
06 Biological Sciences > 0607 Plant Biology > 060799 Plant Biology not elsewhere classified
Identification Number or DOI: doi: 10.1007/s10267-007-0360-x
URI: http://eprints.usq.edu.au/id/eprint/3089

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