IMASL   20939
INSTITUTO DE MATEMATICA APLICADA DE SAN LUIS "PROF. EZIO MARCHI"
Unidad Ejecutora - UE
artículos
Título:
Changes in ectomycorrhizal fungal community composition and declining diversity along a 2-million year soil chronosequence
Autor/es:
HANS LAMBERS; FELIPE ALBORNOZ; NICOLE E. WHITE; MICHAEL BUNCE; ETIENNE LALIBERTÉ; TESTE, F.P.; DÁITHÍ C. MURRAY
Revista:
MOLECULAR ECOLOGY
Editorial:
WILEY-BLACKWELL PUBLISHING, INC
Referencias:
Lugar: Londres; Año: 2016
ISSN:
0962-1083
Resumen:
Ectomycorrhizal (ECM) fungal communities co-vary with host plant communities along soil fertility gradients, yet it is unclear whether this reflects changes in host composition,fungal edaphic specialisation, or priority effects during fungal community establishment. We grew two co-occurring ECM plant species (to control for host identity) in soils collected along a 2-million year chronosequence representing a strong soil fertility gradient, and used soil manipulations to disentangle effects of edaphic properties from those due to fungal inoculum. Ectomycorrhizal fungal community composition changed and richness declined with increasing soil age; these changes were linked to pedogenesis driven shifts in edaphic properties, particularly pH and resin-exchangeable and organic phosphorus. However, when differences in inoculum potential or soil abiotic properties among soil ages were removed while host identity was held constant, differences in ECM fungal communities and richness among chronosequence stages disappeared. Our results show that ECM fungal communities strongly vary during long-term ecosystem development, even within the same hosts. However, these changes could not be attributed to short-term fungal edaphic specialisation or differences in fungal inoculum (i.e. density and composition) alone. Rather, they must reflect longer-term ecosystem-level feedback between soil, vegetation and ECM fungi during pedogenesis.DOI: 10.1111/mec.13778