Symbiosis

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  Subject Areas on Research

  • 50 million years of genomic stasis in endosymbiotic bacteria. 
  • A conservative test of genetic drift in the endosymbiotic bacterium Buchnera: slightly deleterious mutations in the chaperonin groEL. 
  • A keystone mutualism underpins resilience of a coastal ecosystem to drought. 
  • A phylogenetic estimation of trophic transition networks for ascomycetous fungi: are lichens cradles of symbiotrophic fungal diversification? 
  • A three-stage symbiosis forms the foundation of seagrass ecosystems. 
  • Antibiotic and antimalarial quinones from fungus-growing ant-associated Pseudonocardia sp. 
  • Assessing population structure and host specialization in lichenized cyanobacteria. 
  • Biofilms in the large bowel suggest an apparent function of the human vermiform appendix. 
  • Biofilms in the normal human large bowel: fact rather than fiction. 
  • Biogeography and ecological setting of Indian Ocean hydrothermal vents. 
  • Biological nitrogen fixation by alternative nitrogenases in boreal cyanolichens: importance of molybdenum availability and implications for current biological nitrogen fixation estimates. 
  • Biotic interactions and plant invasions. 
  • CO2-enrichment and nutrient availability alter ectomycorrhizal fungal communities. 
  • Can't take the heat: high temperature depletes bacterial endosymbionts of ants. 
  • Characterization of symbiont populations in life-history stages of mussels from chemosynthetic environments. 
  • Community analysis reveals close affinities between endophytic and endolichenic fungi in mosses and lichens. 
  • Comparative genomics of Mortierella elongata and its bacterial endosymbiont Mycoavidus cysteinexigens. 
  • Comparison of the evolutionary dynamics of symbiotic and housekeeping loci: a case for the genetic coherence of rhizobial lineages. 
  • Conflicting selection in the course of adaptive diversification: the interplay between mutualism and intraspecific competition. 
  • Contemporaneous radiations of fungi and plants linked to symbiosis. 
  • Cospeciation between bacterial endosymbionts (Buchnera) and a recent radiation of aphids (Uroleucon) and pitfalls of testing for phylogenetic congruence. 
  • Cospeciation of gut microbiota with hominids. 
  • Cultivation of epithelial-associated microbiota by the immune system. 
  • Decay of mutualistic potential in aphid endosymbionts through silencing of biosynthetic loci: Buchnera of Diuraphis. 
  • Decoupling of genome size and sequence divergence in a symbiotic bacterium. 
  • Deep divergence and rapid evolutionary rates in gut-associated Acetobacteraceae of ants. 
  • Dependence of the cyanobacterium Prochlorococcus on hydrogen peroxide scavenging microbes for growth at the ocean's surface. 
  • Diversity and host range of foliar fungal endophytes: are tropical leaves biodiversity hotspots? 
  • Diversity and phylogenetic affinities of foliar fungal endophytes in loblolly pine inferred by culturing and environmental PCR. 
  • Ecological dynamics of mutualist/antagonist communities. 
  • Ecosystem engineers activate mycorrhizal mutualism in salt marshes. 
  • Ectomycorrhizal fungal diversity and community structure on three co-occurring leguminous canopy tree species in a Neotropical rainforest. 
  • Endosymbiont evolution: predictions from theory and surprises from genomes. 
  • Endosymbiont gene functions impaired and rescued by polymerase infidelity at poly(A) tracts. 
  • Endosymbiosis. 
  • Endosymbiosis: lessons in conflict resolution. 
  • Endosymbiosis: the evil within. 
  • Evidence for genetic drift in endosymbionts (Buchnera): analyses of protein-coding genes. 
  • Evolution of complex symbiotic relationships in a morphologically derived family of lichen-forming fungi. 
  • First impressions in a glowing host-microbe partnership. 
  • For better or worse: genomic consequences of intracellular mutualism and parasitism. 
  • Fungal and algal gene expression in early developmental stages of lichen-symbiosis. 
  • Gene expression levels influence amino acid usage and evolutionary rates in endosymbiotic bacteria. 
  • Genetic isolation between two recently diverged populations of a symbiotic fungus. 
  • Genetic variation in horizontally transmitted fungal endophytes of pine needles reveals population structure in cryptic species. 
  • Genome evolution in an insect cell: distinct features of an ant-bacterial partnership. 
  • Genome evolution in bacterial endosymbionts of insects. 
  • Genome sequence of Blochmannia pennsylvanicus indicates parallel evolutionary trends among bacterial mutualists of insects. 
  • Geographic variation in algal partners of Cladonia subtenuis (Cladoniaceae) highlights the dynamic nature of a lichen symbiosis. 
  • Greater carbon allocation to mycorrhizal fungi reduces tree nitrogen uptake in a boreal forest. 
  • Gut immune maturation depends on colonization with a host-specific microbiota. 
  • High frequency temperature variability reduces the risk of coral bleaching. 
  • Host-symbiont stability and fast evolutionary rates in an ant-bacterium association: cospeciation of camponotus species and their endosymbionts, candidatus blochmannia. 
  • How habitat-modifying organisms structure the food web of two coastal ecosystems. 
  • IGHV1-69 B cell chronic lymphocytic leukemia antibodies cross-react with HIV-1 and hepatitis C virus antigens as well as intestinal commensal bacteria. 
  • In vivo imaging and genetic analysis link bacterial motility and symbiosis in the zebrafish gut. 
  • Insights from the first putative biosynthetic gene cluster for a lichen depside and depsidone. 
  • Integrated proteomics and metabolomics suggests symbiotic metabolism and multimodal regulation in a fungal-endobacterial system. 
  • Integrating quality and quantity of mutualistic service to contrast ant species protecting Ferocactus wislizeni. 
  • Interaction type influences ecological network structure more than local abiotic conditions: evidence from endophytic and endolichenic fungi at a continental scale. 
  • Intraspecific phylogenetic congruence among multiple symbiont genomes. 
  • Intraspecific variation in symbiont genomes: bottlenecks and the aphid-buchnera association. 
  • Investigating niche partitioning of ectomycorrhizal fungi in specialized rooting zones of the monodominant leguminous tree Dicymbe corymbosa. 
  • Lichens. 
  • Macroevolution of Specificity in Cyanolichens of the Genus Peltigera Section Polydactylon (Lecanoromycetes, Ascomycota). 
  • Major fungal lineages are derived from lichen symbiotic ancestors. 
  • Metatranscriptomic Study of Common and Host-Specific Patterns of Gene Expression between Pines and Their Symbiotic Ectomycorrhizal Fungi in the Genus Suillus. 
  • Metatranscriptomic analysis of ectomycorrhizal roots reveals genes associated with Piloderma-Pinus symbiosis: improved methodologies for assessing gene expression in situ. 
  • Moving beyond microbiome-wide associations to causal microbe identification. 
  • Multiple origins of high reciprocal symbiotic specificity at an intercontinental spatial scale among gelatinous lichens (Collemataceae, Lecanoromycetes). 
  • Mutation exposed: a neutral explanation for extreme base composition of an endosymbiont genome. 
  • Mutual visual signalling between the cleaner shrimp Ancylomenes pedersoni and its client fish. 
  • Mutualism meltdown in insects: bacteria constrain thermal adaptation. 
  • Natural selection on extrafloral nectar production in Chamaecrista fasciculata: the costs and benefits of a mutualism trait. 
  • Nonhomogeneous model of sequence evolution indicates independent origins of primary endosymbionts within the enterobacteriales (gamma-Proteobacteria). 
  • Novel forms of structural integration between microbes and a hydrothermal vent gastropod from the Indian Ocean. 
  • One nutritional symbiosis begat another: phylogenetic evidence that the ant tribe Camponotini acquired Blochmannia by tending sap-feeding insects. 
  • Parallel acceleration of evolutionary rates in symbiont genes underlying host nutrition. 
  • Patterns of gut bacterial colonization in three primate species. 
  • Photoautotrophic symbiont and geography are major factors affecting highly structured and diverse bacterial communities in the lichen microbiome. 
  • Phylogeny of Wolbachia pipientis based on gltA, groEL and ftsZ gene sequences: clustering of arthropod and nematode symbionts in the F supergroup, and evidence for further diversity in the Wolbachia tree. 
  • Phylogeny of lichen- and non-lichen-forming omphalinoid mushrooms and the utility of testing for combinability among multiple data sets. 
  • Proteomic analysis of an unculturable bacterial endosymbiont (Blochmannia) reveals high abundance of chaperonins and biosynthetic enzymes. 
  • Purifying selection, sequence composition, and context-specific indel mutations shape intraspecific variation in a bacterial endosymbiont. 
  • Reciprocal gut microbiota transplants from zebrafish and mice to germ-free recipients reveal host habitat selection. 
  • Reduced selective constraint in endosymbionts: elevation in radical amino acid replacements occurs genome-wide. 
  • Remaining flexible in old alliances: functional plasticity in constrained mutualisms. 
  • Rhizobium gone native: unexpected plasmid stability of indigenous Rhizobium leguminosarum. 
  • Sequence context of indel mutations and their effect on protein evolution in a bacterial endosymbiont. 
  • Slow algae, fast fungi: exceptionally high nucleotide substitution rate differences between lichenized fungi Omphalina and their symbiotic green algae Coccomyxa. 
  • Small genome of Candidatus Blochmannia, the bacterial endosymbiont of Camponotus, implies irreversible specialization to an intracellular lifestyle. 
  • Strategies of genomic integration within insect-bacterial mutualisms. 
  • Strong fungal specificity and selectivity for algal symbionts in Florida scrub Cladonia lichens. 
  • The Global Synanthrome Project: A Call for an Exhaustive Study of Human Associates. 
  • The demographic consequences of mutualism: ants increase host-plant fruit production but not population growth. 
  • The ectomycorrhizal fungal community in a neotropical forest dominated by the endemic dipterocarp Pakaraimaea dipterocarpacea. 
  • The function and affinity maturation of HIV-1 gp120-specific monoclonal antibodies derived from colostral B cells. 
  • The tripartite associations between bacteriophage, Wolbachia, and arthropods. 
  • Unprecedented loss of ammonia assimilation capability in a urease-encoding bacterial mutualist. 
  • Vertical transmission of biosynthetic plasmids in aphid endosymbionts (Buchnera). 
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  Keywords of People

  • Wernegreen, Jennifer Jo, Associate Professor of Environmental and Evolutionary Genomics in the Division of Environmental Sciences and Policy, Environmental Sciences and Policy