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9 results for “Key Terms”
Data from: Maintaining local adaptation is key for evolutionary rescue and long-term persistence of populations experiencing habitat loss and a changing environment
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Data from: Evolution of a cross-feeding interaction following a key innovation in a long-term evolution experiment with Escherichia coli
<p>The evolution of a novel trait can profoundly change an organism's effects on its environment, which can in turn affect the further evolution of that organism and any coexisting organisms. We examine these effects and feedbacks following the evolution of a novel function in the Long-Term Evolution Experiment (LTEE) with <em>Escherichia</em> <em>coli</em>. A characteristic feature of <em>E. coli</em> is its inability to grow aerobically on citrate (Cit<sup>−</sup>). Nonetheless, a Cit<sup>+</sup> variant with this capacity evolved in one LTEE population after 31,000 generations. The Cit<sup>+</sup>clade then coexisted stably with another clade that retained the ancestral Cit<sup>−</sup> phenotype. This coexistence was shaped by the evolution of a cross-feeding relationship based on C<sub>4</sub>-dicarboxylic acids, particularly succinate, fumarate, and malate, that the Cit<sup>+</sup> variants release into the medium. Both the Cit<sup>−</sup> and Cit<sup>+</sup> cells evolved to grow on these excreted resources. The evolution of aerobic growth on citrate thus led to a transition from an ecosystem based on a single limiting resource, glucose, to one with at least five resources that were either shared or partitioned between the two coexisting clades. Our findings show that evolutionary novelties can change environmental conditions in ways that facilitate diversity by altering ecosystem structure and the evolutionary trajectories of coexisting lineages.</p>
Data from: Evolution of a cross-feeding interaction following a key innovation in a long-term evolution experiment with Escherichia coli
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FIGURE 2. Interpretative images illustrating morphological terms and measured characters. A in Four new species and a ribosomal phylogeny of Rhabdopleura (Hemichordata: Graptolithina) from New Zealand, with a review and key to all described extant taxa
FIGURE 2. Interpretative images illustrating morphological terms and measured characters. A, part of creeping tube (ct) of an unidentified Rhabdopleura (NIWA 158518) from Kermadec Ridge, with flat lateral margin (flm), faint oblique fusellar sutures and two ringed erect tubes (et) produced directly from the frontal surface of a creeping tube. B, distal end of an erect tube of Rhabdopleura francesca n. sp. (NIWA 158157), showing a vertical series of ring-like fuselli (f), the rim of each comprising a curled fusellar collar (fc). Tube diameter (td) is measured between fusellar collars; fusellus height (fh) is the distance between the bases of a pair of fusellar collars. C, transmitted-light image of part of a principal ('creeping') tube of R. emancipata n. sp. (NIWA 161211) showing a young zooid with contracted arm tentacles (at), stomach (st), rectum (r) and cephalic shield (cs), part of which is concealed by the reddish-brown stolon (black stolon or pectocaulus). D, aperture of an erect tube of R. francesca n. sp.; note the smooth-surfaced interior devoid of vertical fusellar fibrils. E, part of a creeping tube of an unidentified Rhabdopleura (NIWA 90267) from Cavalli Seamount with frontal fusellar sutures (fs, two arrowed). The white lines show the zigzag (zz) portion of the sutures (note the proximalwards shift to the left), with zigzags rendered as straight lines between points of intersection, regardless of suture curvature, to obtain measured angles (one example shown). F, close-up of part of R. francesca n. sp. (NIWA 158157) showing chains of dark 'dormant buds' (db) lying upon short stretches of the black stolon (bs); walls of enveloping creeping tubes almost invisible in image.
Data from: Improvement of non-key traits in radiata pine breeding programme when long-term economic importance is uncertain
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Identification of key regulatory pathways in response to long-term zinc supplementation in human primary retinal pigment epithelium: a multi-omics approach
GEO Series GSE156452. Homo sapiens. 12 samples. Type: Expression profiling by high throughput sequencing.
Pooled CRISPR screens identifies key regulators of bovine stem cell expansion for cultured meat [Long-Term screen]
GEO Series GSE280666. Bos taurus. 27 samples. Type: Other.
Pooled CRISPR screens identifies key regulators of bovine stem cell expansion for cultured meat [Short-Term screen]
GEO Series GSE280676. Bos taurus. 24 samples. Type: Other.
Data from: Long-term belowground effects of grassland management: the key role of liming
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.