IMBIV   05474
INSTITUTO MULTIDISCIPLINARIO DE BIOLOGIA VEGETAL
Unidad Ejecutora - UE
artículos
Título:
Richness, species composition and functional groups in Agaricomycetes communities along a vegetation and elevational gradient in the Andean Yungas of Argentina
Autor/es:
PASTOR, N; SOTERAS, F; NOUHRA, E; GEML, J
Revista:
BIODIVERSITY AND CONSERVATION
Editorial:
SPRINGER
Referencias:
Año: 2018 vol. 27 p. 1849 - 1871
ISSN:
0960-3115
Resumen:
The Neotropics are among the least explored regions from a mycological per-spective. A few recent molecular studies in South America have shown high fungal diver-sity as well as numerous groups of mostly undescribed taxa. Through soil metabarcoding analysis we compared richness and species composition among macrofungal communities, belonging to Agaricales, Russulales, Boletales and Phallomycetidae groups, in three eleva-tional forests types in the subtropical Yungas of Northwestern Argentina (Piedmont for-est; Montane forest, Montane cloud forest). The aims of this study were to assess richness of taxonomic and functional groups along the elevation gradient and to assess the rela-tionships between environmental variables and species composition in the studied fungal communities. The results have shown rich Agaricomycetes communities, diversely struc-tured among forests habitats. The elevation gradient differentially affected the richness and distribution of Agaricales, Russulales, Boletales and Phallomycetidae. Based on fungal trophic modes and guilds, the gradient also affected the ectomycorrhizal taxa distribution. When considering the basidiomata growth forms (agaricoid, boletoid, gasteroid, etc.), only the secotioid type showed significant elevational differences. Additional analyses indicated that saprotrophic nutritional mode was dominant along the entire gradient, being partially replaced by biotrophic modes at higher elevations. Fungal communities in the Montane cloud forests are most dissimilar when compared with communities at the Piedmont forest and Montane forest, which is consistent with the different biogeographic origins of these forests. DNA metabarcoding sequence analysis provided detailed information on the diver-sity and taxonomic and functional composition of macrofungal communities.