Find research datasets worth reusing
Search datasets from major research repositories and use ShareScore to quickly assess how well each record supports discovery, access, and reuse.
10
datasets available to search
ShareScore release 0.9.0
Dataset results
10 results for “Plukenetia”
FIG. 5 in Plukenetia kwangoensis sp. nov. (Euphorbiaceae, Acalyphoideae, Plukenetieae), a new species of Plukenetia L. sect. Hedraiostylus (Hassk.) Müll.Arg. from Democratic Republic of Congo
FIG. 5. — Distribution of Plukenetia kwangoensis L.J.Gillespie, sp. nov. in the Democratic Republic of Congo,central Africa: A, location of the single known collection, Germain 2617, indicated by orange square, corresponding to inset B; B, approximate locality in Nseke Gambi savanna, Kwango Province shown by orange circle.
FIG. 3. — Plukenetia kwangoensis L.J in Plukenetia kwangoensis sp. nov. (Euphorbiaceae, Acalyphoideae, Plukenetieae), a new species of Plukenetia L. sect. Hedraiostylus (Hassk.) Müll.Arg. from Democratic Republic of Congo
FIG. 3. — Plukenetia kwangoensis L.J.Gillespie, sp. nov., Germain 2617 (BR0000015669865): A, staminate flowers; B, pistillate flower; C, immature fruit. Scale bars: A, B, 1 mm; C, 2 mm.
FIG. 4. — Plukenetia kwangoensis L.J in Plukenetia kwangoensis sp. nov. (Euphorbiaceae, Acalyphoideae, Plukenetieae), a new species of Plukenetia L. sect. Hedraiostylus (Hassk.) Müll.Arg. from Democratic Republic of Congo
FIG. 4. — Plukenetia kwangoensis L.J.Gillespie, sp. nov., Germain 2617 (MO): A, pollen grain, polar view; B, closeup of foveolate tectum. Scale bars: 5 µm.
FIG. 2. — Plukenetia kwangoensis L.J in Plukenetia kwangoensis sp. nov. (Euphorbiaceae, Acalyphoideae, Plukenetieae), a new species of Plukenetia L. sect. Hedraiostylus (Hassk.) Müll.Arg. from Democratic Republic of Congo
FIG. 2. — Plukenetia kwangoensis L.J.Gillespie, sp. nov., holotype specimen: R.G.A. Germain 2617 (BR0000015669865).
FIG. 1. — Plukenetia kwangoensis L.J in Plukenetia kwangoensis sp. nov. (Euphorbiaceae, Acalyphoideae, Plukenetieae), a new species of Plukenetia L. sect. Hedraiostylus (Hassk.) Müll.Arg. from Democratic Republic of Congo
FIG. 1. — Plukenetia kwangoensis L.J.Gillespie, sp. nov., Germain 2617 (MO): A, habit; B, pistillate flower; C, immature fruit; D, mature fruit; E, seed. Illustration by Jessica Cosham. Scale bars: A, 1 cm; B, C, E, 1 mm; D, 5 mm.
Data from: A revised sectional classification of Plukenetia L. (Euphorbiaceae, Acalyphoideae) with four new species from South America
<p><span><span><span><span><span><span><span><span><span><span><span>We present a phylogenetic classification for <i>Plukenetia</i> (Euphorbiaceae, Acalyphoideae) based on morphology and molecular phylogenetic studies using nuclear (ETS, ITS, <i>KEA1 </i>introns 11 and 17, <i>TEB </i>exon 17) and plastid (<i>matK</i>, <i>ndhF</i>, <i>psbA-trnH</i>) DNA data. <i>Plukenetia</i> comprises 25 species divided into six sections, with three new sections and four new species described here. The circumscription of <i>Plukenetia</i> is unaltered from recent treatments and we continue to recognize <i>Romanoa </i>as distinct. The sections of <i>Plukenetia</i> correspond with the subclade system proposed by Cardinal-McTeague and Gillespie (2016): P1 = <i>P.</i> sect. <i>Fragariopsis</i> comb. et stat. nov.; P2 = <i>P.</i> sect. <i>Penninerviae</i> sect. nov.; P3 = <i>P.</i> sect. <i>Plukenetia</i>; P4 = <i>P.</i> sect. <i>Angostylidium</i>; and P5 = <i>P. </i>sect. <i>Hedraiostylus</i> + <i>P.</i> sect. <i>Madagascarienses </i>sect. nov. The sections are distinguished by a combination of leaf venation, staminate flower morphology, pistillate flower number, style morphology, fruit type, and seed size. Additionally, we describe three new species from South America belonging to sect. <i>Penninerviae</i>: <b><i>Plukenetia brevistyla </i></b>and<b><i> Plukenetia megastyla</i> </b>from the Amazon basin and <b><i>Plukenetia chocoensis</i></b>from the Chocó Biogeographic Region of Colombia. The new Amazonian species are morphologically similar to <i>P. brachybotrya</i> but distinguished by their style shape and size. The new Colombian species is morphologically similar to <i>P. penninervia</i> but distinguished by its elongate basilaminar extrafloral nectaries, presence of abaxial laminar extrafloral nectaries, and longer inflorescences. We also describe a new species from sect. <i>Plukenetia</i>, <b><i>Plukenetia sylvestris</i></b>, which is widespread in central and southern Peru. This species is suggested to be the wild progenitor of the cultivated <i>P. carolis-vegae</i>, differing by its smaller seeds/fruits and fewer stamens. Molecular data, including a new ETS phylogeny sampling <i>P. brevistyla</i>, support our new taxa as distinct. Keys to the sections and species of <i>Plukenetia</i> are provided<i> </i>and we designate 12 new lectotypes for <i>Plukenetia</i> and <i>Romanoa</i>.</span></span></span></span></span></span></span></span></span></span></span></p>
Data from: A revised sectional classification of Plukenetia L. (Euphorbiaceae, Acalyphoideae) with four new species from South America
Open the record for dataset details and reuse information.
Data from: Seed size evolution and biogeography of Plukenetia (Euphorbiaceae), a pantropical genus with traditionally cultivated oilseed species
Background: Plukenetia is a small pantropical genus of lianas and vines with variably sized edible oil-rich seeds that presents an ideal system to investigate neotropical and pantropical diversification patterns and seed size evolution. We assessed the biogeography and seed evolution of Plukenetia through phylogenetic analyses of a 5,069 character molecular dataset comprising five nuclear and two plastid markers for 86 terminals in subtribe Plukenetiinae (representing 20 of ~23 Plukenetia species). Two nuclear genes, KEA1 and TEB, were used for phylogenetic reconstruction for the first time. Our goals were: (1) produce a robust, time-dependent evolutionary framework for Plukenetia using BEAST; (2) reconstruct its biogeographical history with ancestral range estimation in BioGeoBEARS; (3) define seed size categories; (4) identify patterns of seed size evolution using ancestral state estimation; and (5) conduct regression analyses with putative drivers of seed size using the threshold model. Results: Plukenetia was resolved into two major groups, which we refer to as the pinnately- and palmately-veined clades. Our analyses suggest Plukenetia originated in the Amazon or Atlantic Forest of Brazil during the Oligocene (28.7 Mya) and migrated/dispersed between those regions and Central America/Mexico throughout the Miocene. Trans-oceanic dispersals explain the pantropical distribution of Plukenetia, including from the Amazon to Africa in the Early Miocene (17.4 Mya), followed by Africa to Madagascar and Africa to Southeast Asia in the Late Miocene (9.4 Mya) and Pliocene (4.5 Mya), respectively. We infer a single origin of large seeds in the ancestor of Plukenetia. Seed size fits a Brownian motion model of trait evolution and is moderately to strongly associated with plant size, fruit type/dispersal syndrome, and seedling ecology. Biome shifts were not drivers of seed size, although there was a weak association with a transition to fire prone semi-arid savannas. Conclusions: The major relationships among the species of Plukenetia are now well-resolved. Our biogeographical analyses support growing evidence that many pantropical distributions developed by periodic trans-oceanic dispersals throughout the Miocene and Pliocene. Selection on a combination of traits contributed to seed size variation, while movement between forest edge/light gap and canopy niches likely contributed to the seed size extremes in Plukenetia.
Data from: Seed size evolution and biogeography of Plukenetia (Euphorbiaceae), a pantropical genus with traditionally cultivated oilseed species
Open the record for dataset details and reuse information.
Data from: Dealing with AFLP genotyping errors to reveal genetic structure in Plukenetia volubilis (Euphorbiaceae) in the Peruvian Amazon
Open the record for dataset details and reuse information.
ScienceDex guides
Understand access before you commit
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.