Our lab studies the ecological processes that structure natural communities and the links between community structure and the cycling of nutrients and energy through ecosystems. We focus primarily on fungi, as these organisms are incredibly diverse and are the primary agents of carbon and nutrient cycling in terrestrial ecosystems.
Much of our research focuses on plant-fungal root associations, better known as mycorrhizas, which constitute one of the most pervasive mutualisms in terrestrial ecosystems. We work on questions at three scales of this symbiosis, (1) how does environmental variation and functional variation in mycorrhizal fungi affect the symbiosis at the root tip scale, (2) how does dispersal contribute to the predictability of community assembly patterns at the landscape scale, and (3) how does biogeography affect mycorrhizal community structure and ecosystem function? By integrating these three levels of research we hope to build a 'roots-to-biomes' understanding of plant-microbe symbiosis.
Functional guild classification predicts the enzymatic role of fungi in litter and soil biogeochemistrySOIL BIOLOGY & BIOCHEMISTRYTalbot, J. M., Martin, F., Kohler, A., Henrissat, B., Peay, K. G.2015; 88: 441-456
Lack of host specificity leads to independent assortment of dipterocarps and ectomycorrhizal fungi across a soil fertility gradient.Ecology lettersPeay, K. G., Russo, S. E., McGuire, K. L., Lim, Z., Chan, J. P., Tan, S., Davies, S. J.2015; 18 (8): 807-816
Genetic isolation between two recently diverged populations of a symbiotic fungusMOLECULAR ECOLOGYBranco, S., Gladieux, P., Ellison, C. E., Kuo, A., LaButti, K., Lipzen, A., Grigoriev, I. V., Liao, H., Vilgalys, R., Peay, K. G., Taylor, J. W., Bruns, T. D.2015; 24 (11): 2747-2758
A continental view of pine-associated ectomycorrhizal fungal spore banks: a quiescent functional guild with a strong biogeographic patternNEW PHYTOLOGISTGlassman, S. I., Peay, K. G., Talbot, J. M., Smith, D. P., Chung, J. A., Taylor, J. W., Vilgalys, R., Bruns, T. D.2015; 205 (4): 1619-1631
Local-scale biogeography and spatiotemporal variability in communities of mycorrhizal fungiNEW PHYTOLOGISTBahram, M., Peay, K. G., Tedersoo, L.2015; 205 (4): 1454-1463
Missing checkerboards? An absence of competitive signal in Alnus-associated ectomycorrhizal fungal communitiesPEERJKennedy, P., Nhu Nguyen, N., Cohen, H., Peay, K.2014; 2
Metatranscriptomic analysis of ectomycorrhizal roots reveals genes associated with Piloderma-Pinus symbiosis: improved methodologies for assessing gene expression in situENVIRONMENTAL MICROBIOLOGYLiao, H., Chen, Y., Bruns, T. D., Peay, K. G., Taylor, J. W., Branco, S., Talbot, J. M., Vilgalys, R.2014; 16 (12): 3730-3742
Spore dispersal of basidiomycete fungi at the landscape scale is driven by stochastic and deterministic processes and generates variability in plant-fungal interactionsNEW PHYTOLOGISTPeay, K. G., Bruns, T. D.2014; 204 (1): 180-191
Endemism and functional convergence across the North American soil mycobiomePROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICATalbot, J. M., Bruns, T. D., Taylor, J. W., Smith, D. P., Branco, S., Glassman, S. I., Erlandson, S., Vilgalys, R., Liao, H., Smith, M. E., Peay, K. G.2014; 111 (17): 6341-6346
Ectomycorrhizal fungal traits reflect environmental conditions along a coastal California edaphic gradientFEMS MICROBIOLOGY ECOLOGYMoeller, H. V., Peay, K. G., Fukami, T.2014; 87 (3): 797-806
Sequence Depth, Not PCR Replication, Improves Ecological Inference from Next Generation DNA SequencingPLOS ONESmith, D. P., Peay, K. G.2014; 9 (2)
Genetic variation within a dominant shrub structures green and brown community assemblagesECOLOGYCrutsinger, G. M., Rodriguez-Cabal, M. A., Roddy, A. B., Peay, K. G., Bastow, J. L., Kidder, A. G., Dawson, T. E., Fine, P. V., Rudgers, J. A.2014; 95 (2): 387-398
Towards a unified paradigm for sequence-based identification of fungiMOLECULAR ECOLOGYKoljalg, U., Nilsson, R. H., Abarenkov, K., Tedersoo, L., Taylor, A. F., Bahram, M., Bates, S. T., Bruns, T. D., Bengtsson-Palme, J., Callaghan, T. M., Douglas, B., Drenkhan, T., Eberhardt, U., Duenas, M., Grebenc, T., Griffith, G. W., Hartmann, M., Kirk, P. M., Kohout, P., Larsson, E., Lindahl, B. D., Luecking, R., Martin, M. P., Matheny, P. B., Nguyen, N. H., Niskanen, T., Oja, J., Peay, K. G., Peintner, U., Peterson, M., Poldmaa, K., Saag, L., Saar, I., Schuessler, A., Scott, J. A., Senes, C., Smith, M. E., Suija, A., Taylor, D. L., Telleria, M. T., Weiss, M., Larsson, K.2013; 22 (21): 5271-5277
Strong coupling of plant and fungal community structure across western Amazonian rainforestsISME JOURNALPeay, K. G., Baraloto, C., Fine, P. V.2013; 7 (9): 1852-1861
Host plant genus-level diversity is the best predictor of ectomycorrhizal fungal diversity in a Chinese subtropical forestMOLECULAR ECOLOGYGao, C., Shi, N., Liu, Y., Peay, K. G., Zheng, Y., Ding, Q., Mi, X., Ma, K., Wubet, T., Buscot, F., Guo, L.2013; 22 (12): 3403-3414
Independent roles of ectomycorrhizal and saprotrophic communities in soil organic matter decompositionSOIL BIOLOGY & BIOCHEMISTRYTalbot, J. M., Bruns, T. D., Smith, D. P., Branco, S., Glassman, S. I., Erlandson, S., Vilgalys, R., Peay, K. G.2013; 57: 282-291
Rat invasion of islands alters fungal community structure, but not wood decomposition ratesOIKOSPeay, K. G., Dickie, I. A., Wardle, D. A., Bellingham, P. J., Fukami, T.2013; 122 (2): 258-264
Towards global patterns in the diversity and community structure of ectomycorrhizal fungiMOLECULAR ECOLOGYTedersoo, L., Bahram, M., Toots, M., Diedhiou, A. G., Henkel, T. W., Kjoller, R., Morris, M. H., Nara, K., Nouhra, E., Peay, K. G., Polme, S., Ryberg, M., Smith, M. E., Koljalg, U.2012; 21 (17): 4160-4170
Measuring ectomycorrhizal fungal dispersal: macroecological patterns driven by microscopic propagulesMOLECULAR ECOLOGYPeay, K. G., Schubert, M. G., Nguyen, N. H., Bruns, T. D.2012; 21 (16): 4122-4136
Flowers as Islands: Spatial Distribution of Nectar-Inhabiting Microfungi among Plants of Mimulus aurantiacus, a Hummingbird-Pollinated ShrubMICROBIAL ECOLOGYBelisle, M., Peay, K. G., Fukami, T.2012; 63 (4): 711-718
Phylogenetic relatedness predicts priority effects in nectar yeast communitiesPROCEEDINGS OF THE ROYAL SOCIETY B-BIOLOGICAL SCIENCESPeay, K. G., Belisle, M., Fukami, T.2012; 279 (1729): 749-758
Spongiforma squarepantsii, a new species of gasteroid bolete from BorneoMYCOLOGIADesjardin, D. E., Peay, K. G., Bruns, T. D.2011; 103 (5): 1119-1123
Rethinking ectomycorrhizal succession: are root density and hyphal exploration types drivers of spatial and temporal zonation?FUNGAL ECOLOGYPeay, K. G., Kennedy, P. G., Bruns, T. D.2011; 4 (3): 233-240
Evidence of dispersal limitation in soil microorganisms: Isolation reduces species richness on mycorrhizal tree islandsECOLOGYPeay, K. G., Garbelotto, M., Bruns, T. D.2010; 91 (12): 3631-3640
Testing the ecological stability of ectomycorrhizal symbiosis: effects of heat, ash and mycorrhizal colonization on Pinus muricata seedling performancePLANT AND SOILPeay, K. G., Bruns, T. D., Garbelotto, M.2010; 330 (1-2): 291-302
Potential link between plant and fungal distributions in a dipterocarp rainforest: community and phylogenetic structure of tropical ectomycorrhizal fungi across a plant and soil ecotoneNEW PHYTOLOGISTPeay, K. G., Kennedy, P. G., Davies, S. J., Tan, S., Bruns, T. D.2010; 185 (2): 529-542
Root tip competition among ectomycorrhizal fungi: Are priority effects a rule or an exception?ECOLOGYKennedy, P. G., Peay, K. G., Bruns, T. D.2009; 90 (8): 2098-2107
Spore heat resistance plays an important role in disturbance-mediated assemblage shift of ectomycorrhizal fungi colonizing Pinus muricata seedlingsJOURNAL OF ECOLOGYPeay, K. G., Garbelotto, M., Bruns, T. D.2009; 97 (3): 537-547
Fungal Community Ecology: A Hybrid Beast with a Molecular MasterBIOSCIENCEPeay, K. G., Kennedy, P. G., Bruns, T. D.2008; 58 (9): 799-810
A strong species-area relationship for eukaryotic soil microbes: island size matters for ectomycorrhizal fungiECOLOGY LETTERSPeay, K. G., Bruns, T. D., Kennedy, P. G., Bergemann, S. E., Garbelotto, M.2007; 10 (6): 470-480