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.
103
datasets available to search
ShareScore release 0.7.1
Dataset results
103 results for “Dipterocarpaceae”
Figure 2 in Bornean caterpillar (Lepidoptera) constructs cocoon from Vatica rassak (Dipterocarpaceae) resin containing multiple deterrent compounds
Figure 2. Pieces of resin taken from the cocoon and imaged (A) using photomontage; and (B– D) environmental electron microscopy. Images (B–D) show the elaborate shearing patterns within the resin. The centre of image (D) shows what may be a score mark in the surface of the resin made by the caterpillar.
Fig 1 in Phylogenomics and a revised tribal classification of subfamily Dipterocarpoideae (Dipterocarpaceae)
Fig 1. Chronogram of Dipterocarpoideae based on plastome and nuclear sequences (combined dataset) plus outgroups inferred by BEAST 2. Node ages (in Ma) shown at nodes, with the 95% highest posterior density intervals (HPD; blue bars). All nodes with posterior probability (PP) 1, except nodes indicated with blue circles (PP = 0.79–0.99) or grey circles (PP = 0.33–0.69). Overlay with revised tribal classification: A1: Vaterieae; A2: Dipterocarpeae; A3: Dryobalanopseae; A4: Shoreeae; A5: Doona + Anthoshorea + Neobalanocarpus + Hopea clade; A6: Shorea sect. Doona; A7: S. sect. Anthoshorea; A8: Richetioides + Parashorea + Shorea + Rubroshorea clade; A9: S. sect. Richetioides; A10: S. sect. Shorea; A11: S. sect. Rubroshorea. Fossils used in this study (red circles): I, the crown age of Malvales divergence from Brassicales (Magallón & al., 2015) (102.7 Ma); II, stem age for the ancestral node leading to Sterculioideae (Hernández-Gutiérrez & Magallón, 2019) (78.89 Mr); III, Bombacacidites anne (66–56 Ma) (Van Der Hammen, 1954); IV, Malvaciphyllum macondicus (61.6–56 Ma) (Carvalho & al., 2011). Geological time scale shown in millions of years.
Data from: Nuclear and chloroplast DNA phylogeography reveals Pleistocene divergence and subsequent secondary contact of two genetic lineages of the tropical rainforest tree species Shorea leprosula (Dipterocarpaceae) in Southeast Asia
Tropical rainforests in Southeast Asia have been affected by climatic fluctuations during past glacial eras. To examine how the accompanying changes in land areas and temperature have affected the genetic properties of rainforest trees in the region, we investigated the phylogeographic patterns of a widespread dipterocarp species, Shorea leprosula. Two types of DNA markers were used: expressed sequence tag-based simple sequence repeats (EST-SSRs) and chloroplast DNA (cpDNA) sequence variations. Both sets of markers revealed clear genetic differentiation between populations in Borneo and those in the Malay Peninsula and Sumatra (Malay/Sumatra). However, in the southwestern part of Borneo genetic admixture of the lineages was observed in the two marker types. Coalescent simulation based on cpDNA sequence variation suggested that the two lineages arose 0.28 to 0.09 million years before present, and that following their divergence migration from Malay/Sumatra to Borneo strongly exceeded migration in the opposite direction. We conclude that the genetic structure of S. leprosula was largely formed during the middle Pleistocene and was subsequently modified by eastward migration across the subaerially exposed Sunda Shelf.
Data from: Forest fragmentation genetics in a formerly widespread island endemic tree: Vateriopsis seychellarum (Dipterocarpaceae)
Habitat fragmentation and changed land use have seriously reduced population size in many tropical forest tree species. Formerly widespread species with limited gene flow may be particularly vulnerable to the negative genetic effects of forest fragmentation and small population size. Vateriopsis seychellarum (Dipterocarpaceae) is a formerly widespread canopy tree of the Seychelles, but is now reduced to 132 adult individuals distributed in eleven sites. Using ten microsatellite loci, a genetic inventory of all adult trees and a sample of 317 progeny, we demonstrate that despite its restricted range, overall genetic diversity was relatively high (HE: 0.56). The juvenile cohort, however, had significantly lower allelic richness (adults RS: 3.91; juveniles RS: 2.83) and observed heterozygosity than adult trees (adults HO: 0.62; juveniles HO: 0.48). Rare alleles were fewer and kinship between individuals was stronger in juveniles. Significant fine-scale spatial genetic structure was observed in remnant adults, and parentage analysis indicated that more than 90% of sampled progeny disperse <25 m and pollen dispersed <50 m. The molecular data confirmed that two populations were derived entirely from self-fertilized offspring from a single surviving mother tree. These populations produce viable offspring. Despite this extreme genetic bottleneck, self-compatibility may provide V. seychellarum with some resistance to the genetic consequences of habitat fragmentation, at least in the short term. We discuss our findings in the context of other rare and threatened dipterocarp species which are vulnerable to mis-management of genetic resources and population fragmentation.
Data from: Exploring evolution and diversity of Chinese Dipterocarpaceae using next-generation sequencing
Tropical forests, a key-category of land ecosystems, are faced with the world's highest levels of habitat conversion and associated biodiversity loss. In tropical Asia, Dipterocarpaceae are one of the economically and ecologically most important tree families, but their genomic diversity and evolution remain understudied, hampered by a lack of available genetic resources. Southern China represents the northern limit for Dipterocarpaceae, and thus changes in habitat ecology, community composition and adaptability to climatic conditions are of particular interest in this group. Phylogenomics is a tool for exploring both biodiversity and evolutionary relationships through space and time using plastome, nuclear and mitochondrial genome. We generated full plastome and Nuclear Ribosomal Cistron (NRC) data for Chinese Dipterocarpaceae species as a first step to improve our understanding of their ecology and evolutionary relationships. We generated the plastome of Dipterocarpus turbinatus, the species with the widest distribution using it as a baseline for comparisons with other taxa. Results showed low level of genomic diversity among analysed range-edge species, and different evolutionary history of the incongruent NRC and plastome data. Genomic resources provided in this study will serve as a starting point for future studies on conservation and sustainable use of these dominant forest taxa, phylogenomics and evolutionary studies.
Isolation and characterization of twelve polymorphic microsatellite markers in the endangered Hopea hainanensis (Dipterocarpaceae)
<p>Using next-generation sequencing technology, 26 microsatellite markers were developed and genotyped by capillary electrophoresis for <i>Hopea</i> <i>hainanensis</i> Merrill & Chun, an endangered tree species in Hainan Island and northern Vietnam. Twelve markers were found to be polymorphic in this species. Primer transferability was tested with <i>H</i>. <i>chinensis</i> Hand.-Mazz. and <i>H</i>.<i> reticulata</i> Tardieu, in which 3 and 7 microsatellite markers were found to be polymorphic, separately. The 12 polymorphic microsatellite markers could be applied to population genetic studies aimed at <i>H</i>. <i>hainanensis</i> as well as its close relatives, facilitating the conservation and restoration of these endangered but valuable <i>Hopea</i> species.</p>
FIGURE 1. The best scoring RAxML tree obtained using a in A new species Pseudoplagiostoma dipterocarpicola (Pseudoplagiostomataceae, Diaporthales) found in northern Thailand on members of the Dipterocarpaceae
FIGURE 1. The best scoring RAxML tree obtained using a combined dataset of ITS, LSU, tef1-α and tub2 sequences. The tree is rooted to Togninia minima (AE F56), Togninia novae-zealandiae (CBS 110156) and Phaeoacremonium hungaricum (CBS 123036). ML and MP bootstrap values equal to or greater than 70% and BYPP equal to or greater than 0.95 are given at the nodes (ML/MP/BYPP). Ex-type strains are in black bold and the newly generated sequences are in red bold.
FIGURE 2 in A new species Pseudoplagiostoma dipterocarpicola (Pseudoplagiostomataceae, Diaporthales) found in northern Thailand on members of the Dipterocarpaceae
FIGURE 2. Pseudoplagiostoma dipterocarpicola (MFLU 21-0177, Holotype). a Conidiomata immerse on the twigs of host. b Specimen with conidiomata. c Section of conidiomata. d Peridium. e–g Conidiogenous cells. h–k Conidia. l Germinated conidium. m, n Colony on PDA (up-front, down-reverse). Scale bars: b = 500 μm, c = 50 μm, d = 20 μm, e–g = 10 μm. h–l = 5 μm.
FIGURE 6. Vatica abdulrahmaniana. A in Two new species of Vatica (Dipterocarpaceae) from Peninsular Malaysia
FIGURE 6. Vatica abdulrahmaniana. A. Crown in flower. B. Inner bark. C. Habit. D. Inflorescence (based on L.S.L. Chua FRI 47730, photographs by Lillian Swee-Lian Chua).
FIGURE 4 in Two new species of Vatica (Dipterocarpaceae) from Peninsular Malaysia
FIGURE 4. Size class distribution by dbh of Vatica mizaniana in Compartment 31, Jerangau Forest Reserve.
FIGURE 5. Vatica abdulrahmaniana. A. Fruiting leafy twig. B. Inflorescence. C. Flower bud. D. Bract. E in Two new species of Vatica (Dipterocarpaceae) from Peninsular Malaysia
FIGURE 5. Vatica abdulrahmaniana. A. Fruiting leafy twig. B. Inflorescence. C. Flower bud. D. Bract. E. Sepals (lanceolate and deltate type). F. Petal, abaxial (left), adaxial (right). G. Gynoecium. H. Longitudinal section of flower bud. I. Arrangement of anthers in flower bud. J. Stellate hairs. A & J based on Y. C. Chan FRI 65809, type collection; B,C,D,E,F,G,H and I based on L.S.L. Chua FRI 47730. Drawing by Mohd. Aidil Nordin.
FIGURE 1. Vatica mizaniana. A. Habit. B. Flower bud. C in Two new species of Vatica (Dipterocarpaceae) from Peninsular Malaysia
FIGURE 1. Vatica mizaniana. A. Habit. B. Flower bud. C. Petal, adaxial (left), abaxial (right). D. Sepal, abaxial (left), adaxial (right). E. Gynoecium. F. Longitudinal section of flower bud. G. arrangement of anthers in flower bud. H. Fruit, upper view (top), side view (bottom). I. Stellate hairs. A, H, I based on S. Damahuri FRI 46949, type collection (KEP); B,C,D,E,F,G based on W. S. Y. Yong FRI 65928 (KEP). Drawing by Mohd. Aidil Nordin.
FIGURE 3. Vatica mizaniana. A. Geographic distribution map. B in Two new species of Vatica (Dipterocarpaceae) from Peninsular Malaysia
FIGURE 3. Vatica mizaniana. A. Geographic distribution map. B. Spatial distribution of trees in the population at Compartment 31, Jerangau Forest Reserve.
FIGURE 2. Vatica mizaniana. A. Habit. B. Leafy twig. C, D in Two new species of Vatica (Dipterocarpaceae) from Peninsular Malaysia
FIGURE 2. Vatica mizaniana. A. Habit. B. Leafy twig. C, D. Dark purplish-black young twig and leaves. E. Fruit. (Based on Y. C. Chan FRI 46970 and S. Damanhuri FRI 46949, photographs by Lillian Swee-Lian Chua).
FIGURE 7 in Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia
FIGURE 7. Colour photographs of leaves: Monotes autennei. A. Duvigneaud 5260, B. Duvigneaud & Timperman 2545. M. katangensis: C. Duvigneaud & Timperman 2233; D. Duvigneaud & Timperman 2641. Scale bar = 5 cm.
FIGURE 8 in Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia
FIGURE 8. Colour photographs of leaves in members of Monotes. A1-A2. M. africanus (Duvigneaud 2006: 2 leaves). B. M. doryphorus (Duvigneaud 5267). C. M. hirtii (Duvigneaud 3513). D. M. katangensis (Duvigneaud & Timperman 2641). E. M. pearsonii (Duvigneaud 5233). Scale bar = 5 cm.
FIGURE 3 A–H in Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia
FIGURE 3 A–H. Details of lower surface of the leaf. A. Monotes adenophyllus var. adenophyllus (Duvigneaud 5112). B. M. adenophyllus var. homblei (Duvigneaud 4601). C. M. africanus (Duvigneaud 2006). D. M. autennei (Duvigneaud 5260). E. M. dasyanthus var. dasyanthus (Duvigneaud & Timperman 2341). F. M. dasyanthus var. heterotrichus (Duvigneaud 1141). G. M. dasyanthus var. mutetetwa (Duvigneaud 950). H. M. doryphorus (Duvigneaud 5267).
FIGURE 5 A–H in Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia
FIGURE 5 A–H. SEM photographs of leaf blade surfaces for 12 members of Monotes. A. M. adenophyllus var. adenophyllus, lower surface (Delevoy 524, type of M. delevoyi). B. M. autennei, lower surface (Duvigneaud 3267 (type of M. autennei)). C. M. autennei, upper surface (Duvigneaud 3267). D. M. hypoleucus var. angolensis, lower surface (Duvigneaud 950M2, type of M. oxyphyllinus). E. M. hypoleucus var. angolensis, upper surface (Duvigneaud 950M2). F. M. hypoleucus var. caloneurus, lower surface (Schmitz 1332 (type of M. schmitzii)). G. M. hypoleucus var. caloneurus, upper surface (Schmitz 1332 (type of M. schmitzii)). H. M. hypoleucus var. hypoleucus, lower surface (Welwitsch 1036 (type of M. hypoleucus)).
FIGURE 12 in Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia
FIGURE 12. Colour photographs of leaves: Monotes hypoleucus var. caloneurus. A. Duvigneaud 4764, B. Duvigneaud 4850, C. Duvigneaud 3203, D. Duvigneaud 3338, E. Duvigneaud 2123, F. Duvigneaud 5095, G. Duvigneaud & Timpeman 2109. Scale bar = 5 cm.
FIGURE 2 in Revision of the genus Monotes (Dipterocarpaceae) in D.R. Congo, with implications for Angola and its distinction from Marquesia
FIGURE 2. Inflorescence architecture in Monotes. A. Axillary cymes (M. adenophyllus, M. africanus, M. doryphorus, M. hypoleucus, M. glaber, M. magnificus, M. pearsonii). B. Short terminal congested panicle (often subtended by a variable number of axillary cymes) (M. dasyanthus, M. duvigneaudii, M. hirtii). C. Long terminal thyrses (M. autennei, M. katangensis). D. Axillary panicle or thyrse born below the leaves (M. rubriglans subsp. upembensis).
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.