1,850 results found
    1. Plant Biology

    Flowering time and seed dormancy control use external coincidence to generate life history strategy

    Vicki Springthorpe, Steven Penfield
    Models of plant behaviour show that flowering early in a warming world is an adaptive strategy to insulate progeny seed behaviour from the affects of climate change.
    1. Ecology

    Implications of being born late in the active season for growth, fattening, torpor use, winter survival and fecundity

    Britta Mahlert et al.
    Being born late in the active season is associated with a fast life history in a hibernating species, the garden dormouse (Eliomys quercinus).
    1. Genomics and Evolutionary Biology
    2. Plant Biology

    Multiple alleles at a single locus control seed dormancy in Swedish Arabidopsis

    Envel Kerdaffrec et al.
    Natural variation for an adaptively important life history trait is largely due to variation at a single, major-effect locus with multiple alleles, demonstrating that not all complex traits are massively polygenic.
    1. Biochemistry and Chemical Biology
    2. Genes and Chromosomes

    Bridged filaments of histone-like nucleoid structuring protein pause RNA polymerase and aid termination in bacteria

    Matthew V Kotlajich et al.
    Bridged H-NS filaments inhibit transcript elongation by bacterial RNA polymerase by enhancing backtracking and increasing Rho-dependent termination at a subset of pause sites that are normally poor Rho substrates.
    1. Neuroscience

    The activity-dependent histone variant H2BE modulates the life span of olfactory neurons

    Stephen W Santoro, Catherine Dulac
    A genome-organizing protein that is present only in the olfactory system of mice has been found to orchestrate changes in the relative numbers of different odor-sensing neurons on the basis of how active these neurons are.
    1. Ecology

    Hibernation: Life in the fast lane

    C Loren Buck
    Dormice born late in the year start to prepare for winter sooner than mice born earlier in the year.
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    1. Neuroscience

    Output variability across animals and levels in a motor system

    Angela Wenning et al.
    Population output variability in a motor control system varies across levels (CPG, motor neurons, muscles) and can be ascribed to life history differences among animals and in some cases to differences between bilaterally homologous elements.
    1. Biochemistry and Chemical Biology

    A reverse transcriptase ribozyme

    Biswajit Samanta, Gerald F Joyce
    An RNA enzyme is shown to function as a reverse transcriptase, an activity thought to be crucial for the transition from RNA to DNA genomes during the early history of life on Earth.
    1. Developmental Biology and Stem Cells
    2. Genes and Chromosomes

    Maternal LSD1/KDM1A is an essential regulator of chromatin and transcription landscapes during zygotic genome activation

    Katia Ancelin et al.
    The maternally provided histone demethylase LSD1/KDM1A has an instrumental role at the beginning of life, shaping the histone methylation landscape and the transcriptional repertoire of the early mouse embryo.

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