699 results found
    1. Plant Biology

    The plant pathogen Pseudomonas aeruginosa triggers a DELLA-dependent seed germination arrest in Arabidopsis

    Hicham Chahtane et al.
    Arabidopsis seed germination can be repressed by a Pseudomonas factor.
    1. Plant Biology

    A chloroplast retrograde signal, 3’-phosphoadenosine 5’-phosphate, acts as a secondary messenger in abscisic acid signaling in stomatal closure and germination

    Wannarat Pornsiriwong et al.
    Molecular signals from chloroplasts can synergistically interact with the plant hormone, abscisic acid (ABA), to regulate non-canonical signaling pathways mediating fundamental cellular processes including stomatal closure, seed dormancy and germination.
    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. 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. Structural Biology and Molecular Biophysics

    Pausing guides RNA folding to populate transiently stable RNA structures for riboswitch-based transcription regulation

    Hannah Steinert et al.
    The discontinuous speed of transcription enables riboswitch molecules to adopt meta-stable structures in response to the presence of their cognate ligand, thereby gene-regulation by means of structure induced transcription termination can occur.
    1. Plant Biology

    Dormancy-specific imprinting underlies maternal inheritance of seed dormancy in Arabidopsis thaliana

    Urszula Piskurewicz et al.
    A genomic imprinting program in the endosperm of Arabidopsis mature seeds is dynamically adjusted according to seed dormancy levels and regulates germination.
    1. Plant Biology

    Non-canonical RNA-directed DNA methylation participates in maternal and environmental control of seed dormancy

    Mayumi Iwasaki et al.
    Seed-specific and cold-induced DNA methylation is deposited in the seed progeny to form a transient and transgenerational memory of past environmental conditions to optimize seed germination timing.
    1. Cell Biology
    2. Microbiology and Infectious Disease

    Point of View: Is cell size a spandrel?

    Ariel Amir
    Analysis of experiments on bacteria suggests that the dependence of cell size on growth rate is not an adaptation but a causal consequence of a regulatory mechanism that controls DNA replication.
    1. Chromosomes and Gene Expression

    HIV: The two sides of Tat

    Matjaz Barboric, Koh Fujinaga
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    1. Ecology
    2. Plant Biology

    The Natural History of Model Organisms: Planting molecular functions in an ecological context with Arabidopsis thaliana

    Ute Krämer
    Research in molecular ecology and evolution is increasingly utilizing the model plant Arabidopsis thaliana, placing a spotlight on its natural history.

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