170 results found
    1. Biochemistry and Chemical Biology
    2. Evolutionary Biology

    Reverse evolution leads to genotypic incompatibility despite functional and active site convergence

    Miriam Kaltenbach et al.
    Enzyme evolution is reversible on a structural and functional (phenotypic) level, but through a different mutational pathway that leads to genotypic incompatibility with the ancestor.
    1. Ecology
    2. Evolutionary Biology

    The Natural History of Model Organisms: C. elegans outside the Petri dish

    Lise Frézal, Marie-Anne Félix
    To leverage the tools, resources and knowledge that exist for C. elegans so that we can study ecology, evolution and other aspects of biology, we need to understand the natural history of this important model organism.
    1. Evolutionary Biology
    2. Genetics and Genomics

    The role of structural pleiotropy and regulatory evolution in the retention of heteromers of paralogs

    Axelle Marchant et al.
    Regulatory evolution allows paralogs to escape from strucural pleiotropy.
    1. Ecology
    2. Evolutionary Biology

    Variable opportunities for outcrossing result in hotspots of novel genetic variation in a pathogen metapopulation

    Anna-Liisa Laine et al.
    In natural pathogen populations opportunities for sexual outcrossing vary, leading to spatial variation in genetic diversity and between-season survival.
    1. Genetics and Genomics
    2. Plant Biology

    The MADS-box transcription factor PHERES1 controls imprinting in the endosperm by binding to domesticated transposons

    Rita A Batista et al.
    Jumping of transposable elements provides DNA-binding sites for the MADS-box transcription factor PHERES1, allowing the regulation of imprinted genes and other key endosperm development genes.
    1. Developmental Biology
    2. Evolutionary Biology

    Extraocular, rod-like photoreceptors in a flatworm express xenopsin photopigment

    Kate A Rawlinson et al.
    A new opsin receptor is light-sensitive and expressed in a unique type of photoreceptor in a flatworm that encloses over 400 sensory cilia within its cell membrane.
    1. Microbiology and Infectious Disease

    Coordination of humoral immune factors dictates compatibility between Schistosoma mansoni and Biomphalaria glabrata

    Hongyu Li et al.
    A coordinated humoral immune response that includes recognition, effector and cytotoxic factors engages the cell-mediated immune response to defend a snail against infection by schistosome parasites.
    1. Ecology

    Substantial near-infrared radiation-driven photosynthesis of chlorophyll f-containing cyanobacteria in a natural habitat

    Michael Kühl et al.
    Cyanobacteria with chlorophyll f show substantial near-infrared radiation-driven photosynthesis and can play an important role for primary production in endolithic, intertidal habitats.
    1. Evolutionary Biology
    2. Plant Biology

    Asymmetrical diversification of the receptor-ligand interaction controlling self-incompatibility in Arabidopsis

    Maxime Chantreau et al.
    In-planta ancestral protein resurrection of the female determinant of self-incompatibility specificity in Arabidopsis halleri demonstrates that two allelic variants currently segregating as distinct receptor-ligand combinations diverged through an asymmetrical process.
    1. Ecology
    2. Epidemiology and Global Health

    Antagonism between parasites within snail hosts impacts the transmission of human schistosomiasis

    Martina R Laidemitt et al.
    Interactions among parasites in snails create cascading effects on their transmission and highlight that biodiversity has complex, context-dependent and important effects on human schistosomiasis transmission dynamics.

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