Relationships between mycobiont identity, photobiont specificity and ecological preferences in the lichen genus Peltigera (Ascomycota) in Estonia (northeastern Europe)

Show full item record



Permalink

http://hdl.handle.net/10138/309419

Citation

Juriado , I , Kaasalainen , U , Jylhä , M J & Rikkinen , J 2019 , ' Relationships between mycobiont identity, photobiont specificity and ecological preferences in the lichen genus Peltigera (Ascomycota) in Estonia (northeastern Europe) ' , Fungal Ecology , vol. 39 , pp. 45-54 . https://doi.org/10.1016/j.funeco.2018.11.005

Title: Relationships between mycobiont identity, photobiont specificity and ecological preferences in the lichen genus Peltigera (Ascomycota) in Estonia (northeastern Europe)
Author: Juriado, Inga; Kaasalainen, Ulla; Jylhä, Maarit J; Rikkinen, Jouko
Contributor organization: Finnish Museum of Natural History
Faculty of Biological and Environmental Sciences
Organismal and Evolutionary Biology Research Programme
Botany
Viikki Plant Science Centre (ViPS)
Plant Biology
Biosciences
Lichens
Teachers' Academy
Date: 2019-06
Language: eng
Number of pages: 10
Belongs to series: Fungal Ecology
ISSN: 1878-0083
DOI: https://doi.org/10.1016/j.funeco.2018.11.005
URI: http://hdl.handle.net/10138/309419
Abstract: We studied the genotype diversity of cyanobacterial symbionts in the predominately terricolous cyanolichen genus Peltigera (Peltigerales, Lecanoromycetes) in Estonia. Our sampling comprised 252 lichen specimens collected in grasslands and forests from different parts of the country, which represented all common Peltigera taxa in the region. The cyanobacteria were grouped according to their tRNA(Leu) (UAA) intron sequences, and mycobiont identities were confirmed using fungal ITS sequences. The studied Peltigera species associated with 34 different "Peltigera-type" Nostoc trnL genotypes. Some Peltigera species associated with one or a few trnL genotypes while others associated with a much wider range of genotypes. Mycobiont identity was the primary factor that determined the presence of the specific Nostoc genotype within the studied Peltigera thalli. However, the species-specific patterns of cyanobiont selectivity did not always reflect phylogenetic relationships among the studied fungal species but correlated instead with habitat preferences. Several taxa from different sections of the genus Peltigera were associated with the same Nostoc genotype or with genotypes in the same habitat, indicating the presence of functional guild structure in the photobiont community. Some Nostoc trnL genotypes were only found in the Peltigera species of moist and mesic forest environments, while another set of Nostoc genotypes was typically found in the Peltigera species of xeric habitats. Some Nostoc trnL genotypes were only found in the Peltigera taxa that are common on alvars and may have specialized to living in this unusual and threatened habitat type. (C) 2018 Elsevier Ltd and British Mycological Society. All rights reserved.
Subject: 1181 Ecology, evolutionary biology
Cryptic species
Habitat ecology
Lichenized fungi
Cyanobacteria
Nostoc
Photobiont selectivity
Substrate specificity
GENETIC DIVERSITY
SYMBIOTIC CYANOBACTERIA
POPULATION-STRUCTURE
HOST SPECIALIZATION
FORMING ASCOMYCOTA
MEDIATED GUILDS
BOREAL FOREST
LARGE SUBUNIT
SELECTIVITY
CYANOLICHENS
Peer reviewed: Yes
Rights: cc_by_nc_nd
Usage restriction: openAccess
Self-archived version: acceptedVersion


Files in this item

Total number of downloads: Loading...

Files Size Format View
Juriado_et_al._2018.pdf 656.8Kb PDF View/Open

This item appears in the following Collection(s)

Show full item record