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1,918 results for “molecular evidence”
Supporting Data - Taxonomic reassessment of Tetrapygus niger (Arbacioida, Echinoidea): molecular and morphological evidence support its placement in Arbacia
<p>This dataset contains the accession numbers and links of the sequences of the specimens analyzed by this work, other sequences used for the analyses can be found in the original article. The species from which the sequences were extracted are: Tetrapygus niger Molina, 1782; Arbacia dufresnii Blainville, 1825; Arbacia spatuligera Valenciennes, 1846 and Coelopleurus floridanus A. Agassiz, 1872. The accession numbers for the Cytochrome Oxidase subunit I (COI) and 28S of the nuclear genome are presented separately.</p><p>In addition, the morphological data of Tetrapygus niger (Test diameter, test height and peristome diameter) presented in this study are shown, as well as their collectors, corresponding collection, country and locality.</p>
Direct molecular evidence for an ancient, conserved developmental toolkit controlling post-transcriptional gene regulation in land plants
<p>In plants, miRNA production is orchestrated by a suite of proteins that control transcription of the pri-miRNA gene, post-transcriptional processing and nuclear export of the mature miRNA. Post-transcriptional processing of miRNAs is controlled by a pair of physically-interacting proteins, HYL1 and DCL1. However, the evolutionary history and structural basis of the HYL1-DCL1 interaction is unknown. Here we use ancestral sequence reconstruction and functional characterization of ancestral HYL1 <em>in vitro</em> and in <em>Arabidopsis thaliana </em>to better understand the origin and evolution of the HYL1-DCL1 interaction and its impact on miRNA production and plant development. We found the ancestral plant HYL1 evolved high affinity for both double-stranded RNA (dsRNA) and its DCL1 partner before the divergence of mosses from seed plants (~500 Ma), and these high-affinity interactions remained largely conserved throughout plant evolutionary history. Structural modeling and molecular binding experiments suggest that the second of two double-stranded RNA-binding motifs (DSRMs) in HYL1 may interact tightly with the first of two C-terminal DCL1 DSRMs to mediate the HYL1-DCL1 physical interaction necessary for efficient miRNA production. Transgenic expression of the nearly 200 Ma-old ancestral flowering-plant HYL1 in <em>A. thaliana</em> was sufficient to rescue many key aspects of plant development disrupted by HYL1<sup>-</sup> knockout and restored near-native miRNA production, suggesting that the functional partnership of HYL1-DCL1 originated very early in and was strongly conserved throughout the evolutionary history of terrestrial plants. Overall, our results are consistent with a model in which miRNA-based gene regulation evolved as part of a conserved plant ‘developmental toolkit’.</p>
Figure 1 in Molecular evidence on evolutionary switching from particle-feeding to sophisticated carnivory in the calanoid copepod family Heterorhabdidae: drastic and rapid changes in functions of homologues
Figure 1. Morphology-based phylogenetic trees of the heterorhabdids. A and B, Ohtsuka et al. (1997); C, Park (2001).
FIG. 3 in New molecular and morphological evidences favor a combination of Blechnum bakeri C.Chr. in Cranfillia Gasper & V.A.O.Dittrich (Blechnaceae, Polypodiopsida), thus extending the distribution of Cranfillia to Madagascar and East Africa
FIG. 3. — Spores of Cranfillia and Austroblechnum as observed with SEM: A, B, C. bakeri Vázquez Ferreira & S.Molino, comb. nov. (MA389177); C, D, C. mucronata (MA655870 & UC1615719, respectively); E, F, A. lherminieri (Bory ex Kunze) Gasper & V.A.O.Dittrich (BA57587). Thick and straight muri are visible in Cranfillia, as well as the spongy-trabecular middle layer of the perine (B and D). Smooth and micro-granulated perine ornamentation is observed in A. lherminieri. Scale bar: A, 17 µm; B, 9 µm; C, 7 µm; D, 1 µm; E, 8 µm; F, 2 µm.
FIG. 2 in New molecular and morphological evidences favor a combination of Blechnum bakeri C.Chr. in Cranfillia Gasper & V.A.O.Dittrich (Blechnaceae, Polypodiopsida), thus extending the distribution of Cranfillia to Madagascar and East Africa
FIG. 2. — Morphology of sterile pinnae in Cranfillia species: A, Sterile frond of C. fullagari (K001092750); B-E, Basal pinnae morphology; B, C. opaca (US1431859); C, C. bakeri Vázquez Ferreira & S.Molino, comb. nov. (P00483198); D, C. mucronata (P01389538); E, C. nigra (K001092713). Scale bar: A, 28 mm; B, 6 mm; C, 10 mm; D, 17 mm; E, 7 mm.
FIG. 1 in New molecular and morphological evidences favor a combination of Blechnum bakeri C.Chr. in Cranfillia Gasper & V.A.O.Dittrich (Blechnaceae, Polypodiopsida), thus extending the distribution of Cranfillia to Madagascar and East Africa
FIG. 1. — Majority rule consensus phylogenetic tree for the genus Cranfillia estimated by Bayesian inference on the combined plastid DNA dataset (rbcL, rps4, rps4-trnS, trnL/trnL-trnF), with support values from the Maximum likelihood method and Bayesian inference. Unless mentioned next to the nodes, support values are bootstraps (BS) = 100 and posterior probabilities (PP) = 1. Scale bar is for branch lengths of the phylogram (substitutions/site).
FIG. 3 in Morphological and molecular evidence for a new species, Mannia gradsteinii sp. nov. (Aytoniaceae) from southwestern China
FIG. 3. — Mannia gradsteinii sp. nov.: A, C, D, transverse section of segments; B, epidermal pores; E, F, ventral scales with appendages. All from Y.L. Xiang & P.F. Wang 20170428-12 (holo-, HSNU). Scale bars: A, E, F, 250 μm; B-D, 200 μm.
FIG. 2 in Morphological and molecular evidence for a new species, Mannia gradsteinii sp. nov. (Aytoniaceae) from southwestern China
FIG. 2. — Mannia gradsteinii sp. nov.: A, habit in the field; B, dorsal surface of thallus; C, D, female receptacle, dorsal and ventral view respectively; E-H, SEM micrographs of spores; E, F, distal view; G, proximal view; H, side view. All from Y.L. Xiang & P.F. Wang 20170428-12 (holo-, HSNU). Scale bars: A, 1 cm; B, 2 mm; C, D, 5 mm; E-H, 20 μm.
FIG. 4 in Morphological and molecular evidence for a new species, Mannia gradsteinii sp. nov. (Aytoniaceae) from southwestern China
FIG. 4. — Mannia gradsteinii sp. nov.: A, B, light microscopy micrographs of spores; A, distal view; B, proximal view; C, elater; D, capsule wall; E, F, transverse section of archegoniophore stalks. All from Y.L. Xiang & P.F. Wang 20170428-12 (holo-, HSNU). Scale bars: A-D, 50 μm; E, F, 200 μm.
FIG. 1 in Morphological and molecular evidence for a new species, Mannia gradsteinii sp. nov. (Aytoniaceae) from southwestern China
FIG. 1. — Phylogeny of Mannia Corda illustrating the position of Mannia gradsteinii sp. nov., inferred from combined dataset (trnL-F and 26S) and topology displayed as the best-scoring ML tree in IQtree. ML bootstrap values BS ≥ 65 and Bayesian posterior probabilities values PP ≥ 0.90 are shown at left and at right, respectively.
figure 17 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 17 Doryphoribius monstruosus (Maucci, 1991) comb. nov. (PCM, holotype): A – the buccal apparatus (arrowhead indicates ventral lamina); B – claws I; C – claws IV. Scale bars in micrometres
figure 16 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 16 Buccal apparatus morphology of Doryphoribiidae fam. nov. and Hexapodibiidae members equipped with ventral lamina (arrowheads): A – Apodibius nuntius Binda, 1984; B – Doryphoribius korganovae Biserov, 1994; C – Doryphoribius bindae Lisi, 2011; D – Hexapodibius micronyx; E – Parhexapodibius castrii (Ramazzotti, 1964); F – Parhexapodibius ramazzottii Manicardi & Bertolani, 1987. Scale bars = 10 µm
figure 15 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 15 Hexapodibius micronyx, the buccal apparatus: A – habitus (ventral view, the arrowhead points the ventral lamina); B – habitus (dorsal view); C – buccal crown and ventral lamina (ventral view); D – furca; E – pharynx. Scale bars in micrometres
figure 14 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 14 Thulinius ruffoi, the buccal apparatus: A – habitus; B – mouth opening (the incised arrowhead indicates the first band of teeth, whereas the empty incised arrowhead – the second band of teeth); C – buccal crown (dorsal view); D – furca. Scale bars in micrometres
figure 13 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 13 Grevenius pushkini comb. nov., the buccal apparatus: A – habitus; B – mouth opening (the incised arrowhead indicates the first band of teeth, whereas the empty incised arrowhead – the second band of teeth); C – oral cavity armature; D – buccal crown (dorsal view); E – buccal crown (lateral view); F – pharynx (dorsal view); G – pharynx (lateral view). Scale bars in micrometres
figure 12 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 12 Hypothesised claw evolution scheme within the class Eutardigrada. Common Eutardigrade Ancestor (CEA) exhibited asymmetric (anisonych/heteronych) claws. Most significant changes in the overall morphology of claws are marked with numerals: (1) – secondary branch elongation; (2) – claw reduction, basal portion indistinctly merged with cuticle; (3) – branch curving; (4) – miniaturisation; (5) – evolution of true lunulae; (6) – claws tripartite; (7) – claw symmetry, claws bipartite; (8) – primary branch elongation, secondary branch reduction, lunulae transformed into longitudinal bars, exclusively aquatic. Drawings are based on SEM and/or PCM microphotographs. Phylogenetic relationships are based on the consensus results from recent published works (Bertolani et al., 2014a; Cesari et al., 2016; Guidetti et al., 2016) and the present study
figure 2 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 2 The phylogeny of Isohypsibioidea Sands et al., 2008 based on concatenated 18S rRNA and 28S rRNA seqences. New families and genera are marked in bold. Values above branches indicate Bayesian posterior probability values (BI), whereas those under branches show bootstrap values (ML). Branches with support below 0.9 in BI (70% in ML) were collapsed. Scale bar and branch lengths refer to the Bayesian analysis
figure 11 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 11 Claws of aquatic isohypsibioids, i.e. Doryphoribiidae fam. nov. (PCM): A – Grevenius granulifer comb. nov.; B – Grevenius pushkini comb. nov.; C – Grevenius sismicus (Maucci, 1978) comb. nov.; D – Grevenius karenae (Zawierucha, 2013) comb. nov.; E – Grevenius monoicus (Bertolani, 1981) comb. nov.; F – Grevenius longiunguis (Pilato, 1974) comb. nov.; G – Thulinius ruffoi; H – Pseudobiotus megalonyx. Note singular bars (incised arrowheads) and pseudolunulae (empty incised arrowheads). Asterisks indicate evident internal and anterior claw primary branch widening, the claw curvature forms an obtuse angle (A–C, E) or the expansion is knob-like (D, F). Scale bars = 10 µm Downloaded from Brill.com 12/12/2023 02:59:51PM via Open Access. This is an open access article distributed under the terms of the prevailing CC-BY license at the time of publication. http://creativecommons.org/licenses/by-nc/4.0
figure 3 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 3 Nominal species for the recently transferred or newly erected genera of Isohypsibioidea (PCM): A – Fractonotus verrucosus (Richters, 1900) (Isohypsibiidae); B – Dianea sattleri (Richters, 1902) comb. nov. (Isohypsibiidae); C – Ursulinius pappi (Iharos, 1966) comb. nov. (Isohypsibiidae); D – Grevenius granulifer (Thulin, 1928) comb. nov. (Doryphoribiidae fam. nov.). Scale bars = 50 µm
figure 9 in Deceptive conservatism of claws: distinct phyletic lineages concealed within Isohypsibioidea (Eutardigrada) revealed by molecular and morphological evidence
figure 9 Modified Isohypsibius type claws (Isohypsibiidae, PCM): A – Fractonotus gilvus (Biserov, 1986), note weakly developed pseudolunulae (empty incised arrowheads); B – Dianea sattleri comb. nov.; C – Eremobiotus ovezovae Biserov, 1992; D – Eremobiotus sp. nov. Scale bars = 10 µm
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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.