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First fungal community analyses of endophytic ascomycetes associated with Viscum album ssp. austriacum and its host Pinus sylvestris

Title data

Peršoh, Derek ; Melcher, Martina ; Flessa, Fabienne ; Rambold, Gerhard:
First fungal community analyses of endophytic ascomycetes associated with Viscum album ssp. austriacum and its host Pinus sylvestris.
In: Fungal Biology. Vol. 114 (2010) Issue 7 . - pp. 585-596.
ISSN 1878-6162
DOI: https://doi.org/10.1016/j.funbio.2010.04.009

Abstract in another language

[PubMed]The endophytic fungal communities in the hemi-parasitic epiphyte Viscum album and in itsphorophyte Pinus sylvestris were compared to reveal the fungal distribution patterns in theirhosts. The ITS nrDNA of 208 multiple-isolated fungal strains was sequenced and a newlydesigned process was applied for assigning taxon names to the obtained sequences.Furthermore, the isolates were grouped as clusters, by subjecting a sequence similaritymatrix to various cluster analyses, the results of which were compared and verified by datafrom phylogenetic reconstructions. In contrast to a previously reported dominance ofLeotiomycetes among Pinus inhabiting fungi, the endophytic communities of the two hostplant species studied here were dominated by Xylariaceae (Sordariomycetes). This is inaccordance with the finding that host selectivity was only a minor factor in explaining thedistribution patterns of the endophytic fungi in Viscum and Pinus. Organ and, probably,tissue selectivity had a more pronounced effect. The composition and condition of the woodsin the surrounding, however, are concluded to be the major determinants, due to thefollowing circumstantial evidence: The highest similarities in fungal community compositionswere found for the leaves of the two host plant species, especially when considering only theolder leaves. The finding that the inhabitants of matured or senescent organs are less hostselectiveis in accordance with decreasing defence capabilities of ageing host plant tissueand an increased nutrient supply for saprobic taxa. Therefore, the composition of the fungalcommunities in ageing leaves seems to be predominantly ascribed to contagious spread andto depend on the spectrum of nearby sporulating fungal taxa. We suggest that because abroad range of suitable substrates for Xylariaceae was present in immediate vicinity of thestudy sites, these fungi also dominated among the recorded endophytic taxa.

Further data

Item Type: Article in a journal
Refereed: Yes
Additional notes: BAYCEER84168
Institutions of the University: Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Mycology
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology > Professorship Mycology > Professorship Mycology - Univ.-Prof. Dr. Gerhard Rambold
Research Institutions > Research Centres > Bayreuth Center of Ecology and Environmental Research- BayCEER
Faculties
Faculties > Faculty of Biology, Chemistry and Earth Sciences
Faculties > Faculty of Biology, Chemistry and Earth Sciences > Department of Biology
Research Institutions
Research Institutions > Research Centres
Result of work at the UBT: Yes
DDC Subjects: 500 Science
Date Deposited: 05 May 2015 12:10
Last Modified: 05 May 2015 12:10
URI: https://eref.uni-bayreuth.de/id/eprint/12797