Non-symbiotic soil microbes are more strongly influenced by altered tree biodiversity than arbuscular mycorrhizal fungi during initial forest establishment.

Autor:	Grossman JJ; Arnold Arboretum, Harvard University, 1300 Centre St., Boston, MA 02131, USA.; Department of Ecology, Evolution, and Behavior, University of Minnesota -- Twin Cities, 1475 Gortner Ave., St. Paul, MN, 55108, USA., Butterfield AJ; Department of Chemical Engeineering, University of Minnesota -- Duluth, 1303 Ordean Ct., Duluth, MN 55812, USA., Cavender-Bares J; Department of Ecology, Evolution, and Behavior, University of Minnesota -- Twin Cities, 1475 Gortner Ave., St. Paul, MN, 55108, USA., Hobbie SE; Department of Ecology, Evolution, and Behavior, University of Minnesota -- Twin Cities, 1475 Gortner Ave., St. Paul, MN, 55108, USA., Reich PB; Department of Forest Resources, University of Minnesota -- Twin Cities, 1530 Cleveland Ave. N., St. Paul, MN 55108, USA.; Hawkesbury Institute for the Environment, Western Sydney University, Locked Bag 1797, Penrith 2751, NSW, Australia., Gutknecht J; Department of Soil, Water, and Climate, University of Minnesota --Twin Cities, 1991 Upper Buford Circle, St. Paul, MN 55108, USA., Kennedy PG; Department of Plant and Microbial Biology, University of Minnesota -- Twin Cities, 1475 Gortner Ave., St. Paul, MN 55108, USA.
Jazyk:	angličtina
Zdroj:	FEMS microbiology ecology [FEMS Microbiol Ecol] 2019 Oct 01; Vol. 95 (10).
DOI:	10.1093/femsec/fiz134
Abstrakt:	While the relationship between plant and microbial diversity has been well studied in grasslands, less is known about similar relationships in forests, especially for obligately symbiotic arbuscular mycorrhizal (AM) fungi. To assess the effect of varying tree diversity on microbial alpha- and beta-diversity, we sampled soil from plots in a high-density tree diversity experiment in Minnesota, USA, 3 years after establishment. About 3 of 12 tree species are AM hosts; the other 9 primarily associate with ectomycorrhizal fungi. We used phospho- and neutral lipid fatty acid analysis to characterize the biomass and functional identity of the whole soil bacterial and fungal community and high throughput sequencing to identify the species-level richness and composition of the AM fungal community. We found that plots of differing tree composition had different bacterial and fungal communities; plots with conifers, and especially Juniperus virginiana, had lower densities of several bacterial groups. In contrast, plots with a higher density or diversity of AM hosts showed no sign of greater AM fungal abundance or diversity. Our results indicate that early responses to plant diversity vary considerably across microbial groups, with AM fungal communities potentially requiring longer timescales to respond to changes in host tree diversity. (© FEMS 2019.)
Databáze:	MEDLINE
Externí odkaz:	Zobrazit plný text záznamu