Hostname: page-component-7c8c6479df-fqc5m Total loading time: 0 Render date: 2024-03-28T16:55:17.268Z Has data issue: false hasContentIssue false

Molecular and anatomical evidence for a three-way association between Pinus sylvestris and the ectomycorrhizal fungi Suillus bovinus and Gomphidius roseus

Published online by Cambridge University Press:  02 February 2001

Pål Axel OLSSON
Affiliation:
Department of Microbial Ecology, Ecology Building, Lund University, SE-223 62 Lund, Sweden
Babette MÜNZENBERGER
Affiliation:
Institute of Primary Production and Microbial Ecology, Dr.-Zinn-Weg 18, D-16225 Eberswalde, Germany. E-mail: pal_axel.olsson@mbioekol.lu.se
Shahid MAHMOOD
Affiliation:
Department of Microbial Ecology, Ecology Building, Lund University, SE-223 62 Lund, Sweden
Susanne ERLAND
Affiliation:
Department of Microbial Ecology, Ecology Building, Lund University, SE-223 62 Lund, Sweden
Get access

Abstract

Many intimate associations between different species of ectomycorrhizal fungi are inferred on the basis of the consistent co-occurrence of their fruit bodies. Suillus bovinus and Gomphidius roseus, where the latter never occurs without the former, is one example. This association was examined with PCR identification and light microscopy. S. bovinus and G. roseus were unambiguously separated on the basis of RFLPs of the PCR-amplified ITS region of ribosomal DNA. Tuberculate mycorrhizas of Pinus sylvestris sampled under fruit bodies of G. roseus and S. bovinus were investigated and the majority were identified as mixed associations involving both G. roseus and S. bovinus. Tuberculate mycorrhizas, which macroscopically resemble the ones of Suillus species, contained typical chlamydospores of G. roseus and they had haustoria where G. roseus hyphae penetrated the cortical root cells. Pine seedlings collected near the fruit bodies of the two species were mainly colonised by S. bovinus. Mycelial rhizomorphs collected under the fruit bodies of G. roseus were identified as S. bovinus, while both fungal species were present at the base of G. roseus fruit bodies. The significance of these observations and the possibility that G. roseus acts as a parasite are discussed.

Type
Research Article
Copyright
© The British Mycological Society 2000

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)