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.
23
datasets available to search
ShareScore release 0.9.0
Dataset results
23 results for “Opuntioideae”
Data from: Phylogenomics in Cactaceae: a case study using the chollas sensu lato (Cylindropuntieae, Opuntioideae) reveals a common pattern out of the Chihuahuan/Sonoran Deserts
PREMISE OF THE STUDY: Although numerous phylogenetic studies have been conducted in Cactaceae, whole plastome datasets have not been employed. We used the chollas to develop a plastome dataset for phylogeny reconstruction to test species relationships, biogeography, clade age and morphological evolution. METHODS: We developed a plastome dataset for most known diploid members of the chollas, 42 taxa, as well as for other members of Cylindropuntieae. Paired-end, raw reads from genome skimming were referenced-mapped onto a de novo plastome assembly of one species of cholla, Cylindropuntia bigelovii, which were used to build our plastome dataset that was analyzed using various methods. KEY RESULTS: Our plastome dataset resolved the phylogeny of the chollas, including most inter- and intraspecific relationships. Tribe Cylindropuntieae arose during the early Miocene in southern South America, ca. 18 mya, and is supported as sister to the South American clade Tephrocacteae. The (Micropuntia (Cylindropuntia + Grusonia)) clade most likely originated in the Chihuahuan Desert region around 16 mya, and then migrated into other North American desert regions. Key morphological characters for recognizing traditional taxonomic series (e.g., spiny fruit) in Cylindropuntia are mostly homoplasious. CONCLUSIONS: This study provides the first comprehensive plastome phylogeny for any clade within Cactaceae. Although widespread throughout western North American deserts, the most recent common ancestor of the chollas s.l. likely arose in the Chihuahuan Desert region during the mid-Miocene, with much of their species diversity arising in the early to mid-Pliocene, showing a strikingly similar pattern to other western North American Desert groups.
FIGURE 3 in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 3. Tacinga × flammea. A. Habit, cultivated plant; B. Habit, plant in habitat; C. Flower bud, lateral view; D. Flower, lateral view; E. Flower, frontal view; F. Fruit, lateral view; G. Fruit, longitudinal section to show pulp color and seeds.
FIGURE 4 in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 4. Seeds and areoles of the three new taxa of Tacinga. A–C. Tacinga armata, A. Lateral view of seed; B. Longitudinal section of seed, showing the embryo shape and position; C. Areole; D–F. Tacinga gladispina, D. Lateral view of seed, E. Longitudinal section of seed, showing the embryo shape and position, F. Areole; G–I. Tacinga × flammea, G. Lateral view of seed, H. Longitudinal section of seed, showing the embryo shape and position, I. Areole. Drawn by Juliana Freitas.
FIGURE 7 in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 7. All known species of Tacinga. A. T. armata; B. T. braunii; C–D. T. × flammea; E. T. funalis; F–G. T. gladispina; H–I. T. inamoena; J. T. lilae; K–L. T. palmadora; M. T. × quipa; N–O. T. saxatilis; P–Q. T. subcylindrica; R. T. werneri.
FIGURE 6 in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 6. Mitotic metaphases of the three new taxa of Tacinga after the CMA/DAPI fluorescent dying. A. Tacinga armata (2n = 66 = 2SM + 42M); B. Tacinga gladispina (2n = 44 = 4SM + 40M); C. Tacinga × flammea (2n = 55 = 6SM + 49M). Yellow arrows indicate chromosomes with terminal or interstitial CMA+ bands. Insets highlight the pairs of chromosomes with CMA+ bands.
FIGURE 5 in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 5. Distribution maps of new taxa. A. Brazil outline map highlighting the states of Bahia (BA), Minas Gerais (MG), Paraíba (PB) and Pernambuco (PE); B–D. Distribution of new taxa in elevation maps of BA, MG, PE and PB; B. T. armata in PE and PB, red filled circles; C. T. gladispina in BA, red filled star; D. T. × flammea in MG, red filled triangle.
FIGURE 2. Tacinga gladispina. A in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 2. Tacinga gladispina. A. Habit, plant in habitat; B. Stem-segment with flower bud and immature fruits; C. Flower, frontal view; D. Flowers, lateral view; E. Mature fruit, showing funiculus; F. Mature fruit, longitudinal section to show pulp color and seeds.
FIGURE 1. Tacinga armata. A. Stem-segments with a in Novelties in Cactaceae from Eastern Brazil: Adding two new species and one new nothospecies to Tacinga (Opuntioideae)
FIGURE 1. Tacinga armata. A. Stem-segments with a young fruit, under cultivation; B. Stem-segments with flowers and fruits, plant in habitat; C. Areoles, stem-segment close-up; D. Flower, lateral view; E. Flower, frontal view; F. Young fruit, lateral view; G. Mature fruit, lateral view; H. Mature fruit, longitudinal section to show pulp color and seeds; I. Shooting from a fallen mature fruit; J. Plant in natural habitat; K. Plant in natural habitat (left), sympatric with T. palmadora (plant at right); L. Panoramic view of species' habitat.
FIGURE 6. Maximum clade credibility tree for the Opuntia s.s., including O in Opuntia delafuentiana (Cactaceae: Opuntioideae), a new xoconostle from central Mexico
FIGURE 6. Maximum clade credibility tree for the Opuntia s.s., including O. delafuentiana. Character support values along branches for maximum likelihood and parsimony non-parametric bootstrap respectively. Bold branches correspond with Bayesian posterior probabilities of 0.95 or above. Clade names follows Majure et al. (2012).
FIGURE 5 in Opuntia delafuentiana (Cactaceae: Opuntioideae), a new xoconostle from central Mexico
FIGURE 5. Micromorphologic differences of four species of Opuntia producing xoconostles. Images from the scanning electron microscope of the epidermic cells in spines of the apical and middle part. A. O. joconostle, apical part of the spine with epidermic cells very short and wide. B. O. joconostle, middle part of the spine with epidermic cells of 88.58 μm long and 16.98 μm wide, epidermic cells with fissures between each other and smooth texture. C. O. joconostle, glabrous epidermis, anticlinal walls with rugose texture and paracytic stomata. D. O. matudae, apical part of the spine with short and narrow epidermic cells. E. O. matudae, middle part of the spine with epidermic cells of 105.01 μm long and 21.20 μm wide, epidermic cells with fissures between the cells and smooth texture. F. O. matudae, glabrous epidermis, anticlinal walls with rugose texture and paracytic stomata. G. O. oligacantha, apical part of the spine with long and narrow epidermic cells. H. O. oligacantha, middle part of the spine with epidermic cells of 87.19 μm long and 10.10 μm wide, continuous epidermic cells without fissures between the cells and rugose texture. I. O. oligacantha, pubescent epidermis, anticlinal walls with rugose texture and paracytic stomata. J. O. delafuentiana, apical part of the spine with epidermic cells long and wide. K. O. delafuentiana, middle part of the spine with epidermic cells of 92.02 μm long and 10.76 μm wide, continuous epidermic cells without fissures between the cells and rugose texture. L. O. delafuentiana, pubescent epidermis, anticlinal walls with smooth texture and paracityc stomata.
FIGURE 4. —A. Polyhedric pollen grain, 14–16 in Opuntia delafuentiana (Cactaceae: Opuntioideae), a new xoconostle from central Mexico
FIGURE 4. —A. Polyhedric pollen grain, 14–16 pores (x800). —B. Zoom of a pollen grain: reticle, foramens and part of two pores, with wide and glabrate walls (x2500). —C. Lenticular seed, irregular lateral aril, wider in the inferior left side (x25). —D. Basal view of the seed, lateral hilo-micropilar region, deep, micropile and funicle included, testa punteate (x30). —E. Lateral aril cells (x90). Reference specimen: C. Martínez-González 4 (MEXU).
FIGURE 3. —A in Opuntia delafuentiana (Cactaceae: Opuntioideae), a new xoconostle from central Mexico
FIGURE 3. —A. Areole with short trichomes, glochides, base of a triangular central spine and four radial spines (x25). —B. Apical part of a spine, short epidermic cells (x125). —C. Middle part of a spine, continuous epidermic cells without fissures between the cells and with rugose texture (x110). —D. Glochides with prominent apexes of the epidermic cells (x250). —E. Pubescent epidermis, epidermic cells with smooth anticlinal walls (x400). —F. Paracytic stomata (x500). Reference specimen: C. Martinez-González 4 (MEXU).
FIGURE 2. —A y B in Opuntia delafuentiana (Cactaceae: Opuntioideae), a new xoconostle from central Mexico
FIGURE 2. —A y B. Acute floral bud, segments of the perianth brown, acuminate apex, reddish, obovate pericarpel, prominent tubers, areoles with short trichomes, pinkish, brown glochides and some areoles with brown bristles. —C. Flower in anthesis, superior view, interior segments yellow, obovate with an emarginate apex. —D. Longitudinal cut of the flower, yellowish filaments and white anthers, white style, green lobes of the stigma. —E. Elliptic to obovate fruits, yellowish with green-whitish tones, 4–6 series of areoles, spines absent, glochides brown-yellowish. —F. Longitudinal cut of the fruit, 5.8 cm long, wide walls, green whitish and acids, funicles whitish, semidry and insipid. Reference specimen: C. Martínez-González 4 (MEXU).
FIGURE 1. —A. Bushy habit, 1.13 m in Opuntia delafuentiana (Cactaceae: Opuntioideae), a new xoconostle from central Mexico
FIGURE 1. —A. Bushy habit, 1.13 m height. Native plant from Villa de Tezontepec Municipality, Hidalgo, Mexico. —B. Obovate cladodes, spines present on the areoles. —C. Young cladode, prominent tubers, areoles with short trichomes, pinkish, setose hairs, white, leaves subulate, erect, reddish and with an uncinate apex. Reference specimen: C. Martínez-González 4 (MEXU).
Pleistocene aridification underlies the evolutionary history of the Caribbean endemic, insular giant, Consolea (Opuntioideae)
<p><span><span><span><span><span><span><span><span><span><span><span><strong>Premise:</strong> The Caribbean islands are renowned for their small size but high species diversity, and cacti make up a fascinating component of seasonally dry tropical forest (SDTF) there. <i>Consolea</i> consist of nine species of dioecious, hummingbird pollinated trees endemic to the West Indies, which form a conspicuous element of the SDTF. Several species are threatened by anthropogenic disturbance, disease, sea-level rise and invasive species, and are of conservation concern. However, no comprehensive phylogeny yet exists for the clade. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span><strong>Methods:</strong> We reconstructed the phylogeny of <i>Consolea</i>, sampling all species using plastome data to determine relationships, understand the evolution of key morphological characters and test their biogeographic history. We estimated divergence times to determine the role climate change may have played in shaping the current diversity of the clade. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span><strong>Results: </strong><i>Consolea</i> appears to have evolved very recently during the latter part of the Pleistocene on Cuba/Hispaniola likely from a South American ancestor, and from there moved into the Bahamas, Jamaica, Puerto Rico, Florida and the Lesser Antilles. The tree growth form is a synapomorphy of <i>Consolea</i> and likely aided in the establishment and diversification of the clade. </span></span></span></span></span></span></span></span></span></span></span></p> <p><span><span><span><span><span><span><span><span><span><span><span><strong>Conclusions:</strong> Pleistocene aridification associated with glaciation likely played a role in shaping the current diversity of <i>Consolea</i>, and insular gigantism may have been a key innovation leading to the success of these species to invade the often dense SDTF. This in-situ Caribbean radiation provides a window into the generation of species diversity and the complexity of the SDTF community within the Antilles.</span></span></span></span></span></span></span></span></span></span></span></p>
FIGURE 5. Opuntia olmeca. A in Opuntia tehuacana and O. olmeca (Cactaceae, Opuntioideae) are to be considered as ascribed to a single species: morphological and molecular evidences
FIGURE 5. Opuntia olmeca. A. Elliptical to obovate green fruits, absent spines. B. Longitudinal cut of the fruit, wide walls, white funicles with reddish tones. Photographs by Martínez-González.
FIGURE 6 in Opuntia tehuacana and O. olmeca (Cactaceae, Opuntioideae) are to be considered as ascribed to a single species: morphological and molecular evidences
FIGURE 6. Maximum credibility phylogram of clades, using Bayesian inference of Opuntia s.s. species and related groups. The phylogenetic position of O. tehuacana and O. olmeca is shown in bold. The support of clades is represented by a corresponding thick line with subsequent Bayesian probability PP ≥ 0.95.
FIGURE 4. Opuntia olmeca. A. Elliptical cladode. B in Opuntia tehuacana and O. olmeca (Cactaceae, Opuntioideae) are to be considered as ascribed to a single species: morphological and molecular evidences
FIGURE 4. Opuntia olmeca. A. Elliptical cladode. B. Parasitic stoma, isodiametric, epidermal cells with a multicellular aspect. C. Flower bud, top view. D. Acute flower buds, green perianth segments with reddish apex, obovate to elliptical pericarp. E. Yellow flower in anthesis. F. Side view of the flower, outer segments of obovate perianth. Photographs by Martínez-González.
FIGURE 2. Opuntia tehuacana. A in Opuntia tehuacana and O. olmeca (Cactaceae, Opuntioideae) are to be considered as ascribed to a single species: morphological and molecular evidences
FIGURE 2. Opuntia tehuacana. A. Subcircular to obovate cladodes. B. Parasitic stomas, isodiametric, multicellular epidermal cells. C. Flower bud, top view. D. Acute flower buds, reddish perianth segments, subcircular pericarp. E. Subcircular, green fruit. F. Longitudinal cut of the fruit, wide walls, white funicles with reddish tones. Photographs by Martínez-González.
FIGURE 3. Opuntia olmeca. A. Shrubby habit, 1.00 m high. B. Defined trunk, grayish scaly bark with light brown tones. C in Opuntia tehuacana and O. olmeca (Cactaceae, Opuntioideae) are to be considered as ascribed to a single species: morphological and molecular evidences
FIGURE 3. Opuntia olmeca. A. Shrubby habit, 1.00 m high. B. Defined trunk, grayish scaly bark with light brown tones. C. Juvenile cladode, prominent tubers, areolas with short yellowish trichomes. Photographs by Martínez-González.
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.