TY - JOUR T1 - Tree genotype influences ectomycorrhizal fungal community structure: Ecological and evolutionary implications JF - FUNGAL ECOLOGY Y1 - 2016 A1 - Lamit,LJ A1 - LM Holeski A1 - L Flores-Renteria A1 - TG Whitham A1 - CA Gehring AB - Although the eco-evolutionary dynamics of multicellular organisms are intertwined with the microorganisms that colonize them, there is only a rudimentary understanding of how a host's genotype influences its microbiome. We utilize Populus angustifolia to test whether communities of essential symbionts, ectomycorrhizal fungi (EMF), vary among host genotypes. Further, we test whether EMF communities covary among tree genotypes with the chemistry of senescent leaves and aboveground biomass, traits important to tree fitness, and carbon and nutrient cycling. We found: 1) EMF composition, colonization and the Basidiomycota to Ascomycota ratio varied among tree genotypes (broad-sense heritability=0.10鈥0.25). 2) EMF composition did not covary among genotypes with aboveground biomass but it did covary with senescent leaf chemistry ( rho =0.29), primarily due to a single genotype. These findings demonstrate a link between tree genotype and EMF communities, which has implications for fungal diversity, host-symbiont interactions and aboveground-belowground linkages in ecological and evolutionary contexts. VL - 24 UR - http://www.sciencedirect.com/science/article/pii/S1754504816300563 ER - TY - JOUR T1 - Tree genotype influences ectomycorrhizal fungal community structure: ecological and evolutionary implications. JF - Fungal Ecology Y1 - 2016 A1 - L.J. Lamit A1 - L. M. Holeski A1 - L. Flores-Rentería A1 - T. G. Whitham A1 - C. A. Gehring KW - Ectomycorrhizal fungi KW - Genotype Heritability KW - Populus KW - Senescent leaf chemistry AB -

Although the eco-evolutionary dynamics of multicellular organisms are intertwined with the microorganisms that colonize them, there is only a rudimentary understanding of how a host's genotype influences its microbiome. We utilize Populus angustifolia to test whether communities of essential symbionts, ectomycorrhizal fungi (EMF), vary among host genotypes. Further, we test whether EMF communities covary among tree genotypes with the chemistry of senescent leaves and aboveground biomass, traits important to tree fitness, and carbon and nutrient cycling. We found: 1) EMF composition, colonization and the Basidiomycota to Ascomycota ratio varied among tree genotypes (broad-sense heritability = 0.10–0.25). 2) EMF composition did not covary among genotypes with aboveground biomass but it did covary with senescent leaf chemistry (rho = 0.29), primarily due to a single genotype. These findings demonstrate a link between tree genotype and EMF communities, which has implications for fungal diversity, host-symbiont interactions and aboveground-belowground linkages in ecological and evolutionary contexts.

VL - 24 UR - https://www.sciencedirect.com/science/article/pii/S1754504816300563 IS - Part B ER - TY - JOUR T1 - Community specificity: life and afterlife effects of genes. JF - Trends in plant science Y1 - 2012 A1 - Whitham,Thomas G A1 - Gehring,Catherine A A1 - Lamit,Louis J A1 - Wojtowicz,Todd A1 - Evans,Luke M A1 - Keith,Arthur R A1 - Smith,David Solance KW - Animals KW - Arthropods KW - Biological Evolution KW - Ecosystem KW - Genotype KW - Herbivory KW - Host-Parasite Interactions KW - Models, Biological KW - Plants KW - Species Specificity AB -

Community-level genetic specificity results when individual genotypes or populations of the same species support different communities. Our review of the literature shows that genetic specificity exhibits both life and afterlife effects; it is a widespread phenomenon occurring in diverse taxonomic groups, aquatic to terrestrial ecosystems, and species-poor to species-rich systems. Such specificity affects species interactions, evolution, ecosystem processes and leads to community feedbacks on the performance of the individuals expressing the traits. Thus, genetic specificity by communities appears to be fundamentally important, suggesting that specificity is a major driver of the biodiversity and stability of the world's ecosystems.

VL - 17 SN - 1360-1385 UR - http://www.ncbi.nlm.nih.gov/sites/entrez?Db=pubmed&DbFrom=pubmed&Cmd=Link&LinkName=pubmed_pubmed&LinkReadableName=Related%20Articles&IdsFromResult=22322002&ordinalpos=3&itool=EntrezSystem2.PEntrez.Pubmed.Pubmed_ResultsPanel.Pubmed_RVDocSumhttp://www.ncbi. IS - 5 ER - TY - JOUR T1 - Genetically-based trait variation within a foundation tree species influences a dominant bark lichen . JF - Fungal Ecology Y1 - 2011 A1 - Lamit,LJ A1 - MA Bowker A1 - LM Holeski A1 - Næsborg,RR A1 - Wooley,SC A1 - M Zinkgraf A1 - Lindroth,RL A1 - TG Whitham A1 - CA Gehring VL - 4 N1 - [Original String]:Lamit LJ, Bowker MA, Holeski LM, Næsborg RR, Wooley SC, Zinkgraf M, Lindroth RL, Whitham TG, Gehring CA. 2011. Genetically-based trait variation within a foundation tree species influences a dominant bark lichen . Fungal Ecology 4:103-109. ER - TY - JOUR T1 - Hybridization among foundation tree species influences the structure of associated understory plant communities JF - Botany-botanique Y1 - 2011 A1 - Lamit,LJ A1 - Wojtowicz,T A1 - Kovacs,Z A1 - Wooley,SC A1 - M Zinkgraf AB - Understanding how genetic identity influences community structure is a major focus in evolutionary ecology, yet few studies examine interactions among organisms in the same trophic level within this context. In a common garden containing trees from a hybrid system (S. Wats. × James), we tested the hypothesis that the structure of establishing understory plant communities is influenced by genetic differences among trees and explored foliar condensed tannins (CTs) and photosynthetically active radiation (PAR) as mechanisms. Several findings support our hypothesis: () Understory biomass and cover increase along the genetic gradient from to . () Along the same hybridization gradient, species richness decreases and species composition shifts. () foliar CT concentrations and PAR decrease from to . () Understory species richness increases with foliar CTs; however, biomass, cover, and composition show no relationship with CTs, and no understory variables correlate with PAR. () Structural equation modeling suggests that foliar CTs are a primary mechanism linking overstory tree genetics with understory richness. Using an experimental system dominated by naturally colonizing exotic species, this study demonstrates that a genetic gradient created by tree hybridization can influence understory plants.Pour l'écologie évolutive, la compréhension de l'influence de l'identité génétique sur la structure des communautés constitue un enjeu majeur; pourtant, il existe peu d'études ayant examiné les interactions entre les organismes occupant la même échelle trophique dans ce contexte. Dans un jardin commun comportant des arbres provenant d'un système hybride (S. Wats.× James), les auteurs ont vérifié l'hypothèse à l'effet que la structure de la mise en place des communautés végétales de sous bois se fait sous l'influence des différences génétiques entre les arbres, en utilisant comme mécanismes les tannins foliaires condensés (CTs) et les radiations photosynthétiquement actives (PAR). Plusieurs constatations supportent cette hypothèse. () La biomasse de sous bois et la couverture augmentent le long d'un gradient génétique, à partir du jusqu'au . () Le long du même gradient d'hybridation, la richesse en espèces diminue et la composition en espèces se déplace. () La teneur en CT foliaires et les PAR des diminuent du vers le . () La richesse en espèces du sous-bois augmente avec les CTs foliaires, cependant, la couverture et la composition de la neige ne montrent pas de relation avec les CTs, et aucune variable du sous-bois ne montre de corrélation avec les PAR. () La modélisation de l'équation structurale suggère que les CTs constituent un mécanisme primaire liant la génétique des arbres de la canopée avec la richesse en sous-étage. 08 l'aide d'un système expérimental dominé par la colonisation naturelle avec des espèces exotiques, cette étude démontre qu'un gradient génétique créé par l'hybridation des arbres peut influencer les plantes de sous-bois. VL - 89 UR - http://www.ingentaconnect.com/content/nrc/bot/2011/00000089/00000003/art00003 IS - 3 ER -