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First record of Rhizoscyphus ericae in Southern Hemisphere´s Ericaceae
- 1.0477420 - BÚ 2018 RIV DE eng J - Článek v odborném periodiku
Bruzone, M. C. - Fehrer, Judith - Fontenla, S. B. - Vohník, Martin
First record of Rhizoscyphus ericae in Southern Hemisphere´s Ericaceae.
Mycorrhiza. Roč. 27, č. 2 (2017), s. 147-163. ISSN 0940-6360. E-ISSN 1432-1890
Grant CEP: GA MŠMT(CZ) 7AMB14AR003; GA MŠMT 7AMB12AR014
Institucionální podpora: RVO:67985939
Klíčová slova: ericoid mycorrhiza * Rhizoscipus Ericae * Southern Hemisphere
Obor OECD: Ecology
Impakt faktor: 2.778, rok: 2017
Ericoid mycorrhiza is arguably the least investigated mycorrhizal type, particularly when related to the number of potential hosts and the ecosystems they inhabit. Little is known about the global distribution of ericoid mycorrhizal (ErM) fungi, and this holds true even for the prominent ErM mycobiont Rhizoscyphus ericae. Earlier studies suggested R. ericae might be low in abundance or absent in the roots of Southern Hemisphere's Ericaceae, and our previous investigations in two Argentine Patagonian forests supported this view. Here, we revisited the formerly investigated area, albeit at a higher altitude, and screened fungi inhabiting hair roots of Gaultheria caespitosa and Gaultheria pumila at a treeless alpine site using the same methods as previously. We obtained 234 isolates, most of them belonging to Ascomycota. In contrast to previous findings, however, among 37 detected operational taxonomic units (OTUs), OTU 1 comprised the highest number of isolates. Most of the OTUs and isolates belonged to the Helotiales, and 82.5 % of isolates belonged to OTUs shared between both Gaultheria species. At the alpine site, ericoid mycorrhizal fungi dominated, followed by dark septate endophytes and aquatic hyphomycetes probably acting as root endophytes. Our results suggest that the distribution of R. ericae is influenced, among others, by factors related to altitude such as soil type and presence/absence and type of the neighboring vegetation. Our study is the first report on R. ericae colonizing Ericaceae roots in the Southern Hemisphere and extends the known range of this prominent ErM species to NW Patagonia.
Trvalý link: http://hdl.handle.net/11104/0273815
Počet záznamů: 1