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.
195
datasets available to search
ShareScore release 0.9.0
Dataset results
195 results for “Dinoflagellates”
Data from: Transcriptomic responses of the calanoid copepod Calanus finmarchicus to the saxitoxin producing dinoflagellate Alexandrium fundyense
Open the record for dataset details and reuse information.
Data from: New insights into carbon acquisition and exchanges within the coral-dinoflagellate symbiosis under NH4+ and NO3- supply
Open the record for dataset details and reuse information.
Data from: Ecologically differentiated, stress tolerant endosymbionts in the dinoflagellate genus Symbiodinium (Dinophyceae) Clade D are different species.
Open the record for dataset details and reuse information.
Data from: Intraspecific trait variation and trade-offs within and across populations of a toxic dinoflagellate
Open the record for dataset details and reuse information.
Data from: Are Niemann-Pick type C proteins key players in cnidarian-dinoflagellate endosymbioses?
Open the record for dataset details and reuse information.
Data from: New insights into the dynamics between reef corals and their associated dinoflagellate endosymbionts from population genetic studies.
Open the record for dataset details and reuse information.
Data from: Dinoflagellates with relic endosymbiont nuclei as models for elucidating organellogenesis
Open the record for dataset details and reuse information.
Data from: Comparison of spatial and temporal genetic differentiation in a harmful dinoflagellate species emphasises impact of local processes
Open the record for dataset details and reuse information.
Single cell transcriptomics of of Abedinium reveals a new early-branching dinoflagellate lineage
Open the record for dataset details and reuse information.
Stressor-induced ecdysis and thecate cyst formation in the armoured dinoflagellates Prorocentrum cordatum
<p>The culture of the dinoflagellates Prorocentrum cordatum was subjected to various stressors to induce the process of ecdysis. The stressors were centrifugation, vortexing, changes in temperature, salinity and pH, application of 2,3-dichlorobenzonitrile and tetracycline. The rates of complete ecdysis and ecdysis initiation, as well as mortality rate were calculated following the treatments. Rate of ecdysis induced by centrifugation was additionally estimated in the cultures at the different growth phases.</p>
Data from: Delimitation of the Thoracosphaeraceae (Dinophyceae), including the calcareous dinoflagellates, based on large amounts of ribosomal RNA sequence data
The phylogenetic relationships of the Dinophyceae (Alveolata) are not sufficiently resolved at present. The Thoracosphaeraceae (Peridiniales) are the only group of the Alveolata that include members with calcareous coccoid stages; this trait is considered apomorphic. Although the coccoid stage apparently is not calcareous, Bysmatrum has been assigned to the Thoracosphaeraceae based on thecal morphology. We tested the monophyly of the Thoracosphaeraceae using large sets of ribosomal RNA sequence data of the Alveolata including the Dinophyceae. Phylogenetic analyses were performed using Maximum Likelihood and Bayesian approaches. The Thoracosphaeraceae were monophyletic, but included also a number of non-calcareous dinophytes (such as Ensiculifera and Pfiesteria) and even parasites (such as Duboscquodinium and Tintinnophagus). Bysmatrum had an isolated and uncertain phylogenetic position outside the Thoracosphaeraceae. The phylogenetic relationships among calcareous dinophytes appear complex, and the assumption of the single origin of the potential to produce calcareous structures is challenged. The application of concatenated ribosomal RNA sequence data may prove promising for phylogenetic reconstructions of the Dinophyceae in future.
Data from: Functional relationship between a dinoflagellate host and its diatom endosymbiont
While we know much about the evolutionary patterns of endosymbiotic organelle origins, we know less about how the actual process unfolded within each system. This is partly due to the massive changes endosymbiosis appears to trigger, and partly because most organelles evolved in the distant past. The dinotoms are dinoflagellates with diatom endosymbionts, and they represent a relatively recent but nevertheless obligate endosymbiotic association. We have carried out deep sequencing of both the host and endosymbiont transcriptomes from two dinotoms, Durinskia baltica and Glenodinium foliaceum, to examine how the nucleocytosolic compartments have functionally integrated. This analysis showed little or no functional reduction in either the endosymbiont or host, and no evidence for genetic integration. Rather, host and endosymbiont seem to be bound to each other via metabolites, such as photosynthate exported from the endosymbiont to the host as indicated by the presence of plastidic phosphate translocators in the host transcriptome. The host is able to synthesize starch, using plant-specific starch synthases, as a way to store imported photosynthate.
Data from: Optimal nutrient exchange and immune responses operate in partner specificity in the cnidarian-dinoflagellate symbiosis
The relationship between reef-building corals and phototrophic dinoflagellates of the genus Symbiodinium is fundamental to the functioning of coral reef ecosystems. It has been suggested that reef corals may adapt to climate change by changing their dominant symbiont type to a more thermally tolerant one, although the capacity for such a community shift is potentially hindered by the compatibility of different host-symbiont pairings. Here we combined transcriptomic and metabolomic analyses to characterize the molecular, cellular, and physiological processes that underlie this compatibility, with a particular focus on Symbiodinium trenchii, an opportunistic, thermally tolerant symbiont that flourishes in coral tissues after bleaching events. Symbiont-free individuals of the sea anemone Exaiptasia pallida (commonly referred to as Aiptasia), an established model system for the study of the cnidarian-dinoflagellate symbiosis, were colonized with the "normal" (homologous) symbiont Symbiodinium minutum and the heterologous S. trenchii. Analysis of the host gene and metabolite expression profiles revealed that heterologous symbionts induced an expression pattern intermediate between the typical symbiotic state and the aposymbiotic state. Furthermore, integrated pathway analysis revealed that increased catabolism of fixed carbon stores, metabolic signaling, and immune processes occurred in response to the heterologous symbiont type. Our data suggest that both nutritional provisioning and the immune response induced by the foreign "invader" are important factors in determining the capacity of corals to adapt to climate change through the establishment of novel symbioses.
Data from: Intraspecific and interspecific variation in thermotolerance and photoacclimation in Symbiodinium dinoflagellates
Light and temperature are major drivers in the ecology and biogeography of symbiotic dinoflagellates living in corals and other cnidarians. We examined variations in physiology among 11 strains comprising five species of clade A Symbiodinium. We grew cultures at 26°C (control) and 32°C (high temperature) over a duration of 18 days while measuring growth and photochemical efficiency (Fv/Fm). Responses to thermal stress ranged from susceptible to tolerant across species and strains. Most strains exhibited a decrease in cell densities and Fv/Fm when grown at 32°C. Tolerance to high temperature (T32) was calculated for all strains, ranging from 0 (unable to survive at high temperature) to 1 (able survive at high temperature). There was substantial variation in thermotolerance across species and among strains. One strain had a T32 close to 1, indicating that growth was not reduced at 32°C for only this one strain. To evaluate the combined effect of temperature and light on physiological stress, we selected three strains with different levels of thermotolerance (tolerant, intermediate and susceptible) and grew them under five different light intensities (65, 80, 100, 240 and 443 µmol quanta m−2 s−1) at 26 and 32°C. High irradiance exacerbated the effect of high temperature, particularly in strains from thermally sensitive species. This work further supports the recognition that broad physiological differences exist not only among species within Symbiodinium clades, but also among strains within species demonstrating that thermotolerance varies widely between species and among strains within species.
Dinoflagellate cyst and pollen counts in combination with environmental parameters from the northern Gulf of Mexico
<p>Counts from dinoflagellate cysts and pollen from 21 surface sediments collected from the northern Gulf of Mexico. The dataset also includes the environmental parameters used for the redundancy analysis in the article. Supplement to: Yedema et al., (2023); Dinoflagellate cyst and pollen assemblages as tracers for marine productivity and river input in the northern Gulf of Mexico (https://doi.org/10.5194/jm-42-257-2023)</p>
Ocean climate and hydrodynamics drive decadal shifts in Northeast Atlantic dinoflagellates
<p>The abundance of large marine <em>dinoflagellates </em>has declined in the North Sea since 1958. Although hypotheses have been proposed to explain this diminution (increasing temperature and wind), the mechanisms behind this pattern have thus far remained elusive. In this article, we study the long-term changes in dinoflagellate biomass and biodiversity in relation to hydro-climatic conditions and circulation within the North-Atlantic. Our results show that the decline in biomass has paralleled an increase in biodiversity caused by a temperature-induced northward movement of subtropical taxa along the European shelf-edge, and facilitated by changes in oceanic circulation (subpolar gyre contraction). However, major changes in North Atlantic hydrodynamics in the 2010s (subpolar gyre expansion and low-salinity anomaly) stopped this movement, which triggered a biodiversity collapse in the North Sea. Further, North Sea dinoflagellate biomass remained low because of warming. Our results, therefore, reveal that regional climate warming and changes in oceanic circulation strongly influenced shifts in dinoflagellate biomass and biodiversity.</p> <p>The data provided here are the changes in <em>dinoflagellates </em>taxonomic richness and biomass in the Northeast Atlantic, the salinity and temperature optimums of each taxa and various hydroclimatic indices.</p>
Figures 25–27 in Diversity and distribution of species of the planktonic dinoflagellate genus Alexandrium (Dinophyta) from the tropical and subtropical Mexican Pacific Ocean
Figures 25–27: Alexandrium minutum, LM. (25) Empty cell in ventral view with the first apical plate (1′), ventral pore (arrow) and Po. (26) Outline of a cell. (27) Epitheca with plate tabulation and ventral pore (arrow).
The proteome of dinoflagellate symbionts during symbiosis establishment in a model cnidarian
<p>Supplemntary tables, Data and R scripts</p>
Figure 2 in Distribution and abundance of dinoflagellates from the coastal waters of Karachi, Pakistan, northern part of the Arabian Sea
Figure 2. Phytoplankton cell abundance (cellx103L-l) and dinoflagellates percentage (%) recorded from offshore and nearshore waters along the Sindh coast of Pakistan. A-B: Manora Island and Mubarak Village offshore waters; C-D: Manora Island and Mubarak Village nearshore waters.
Figure 1 in Distribution and abundance of dinoflagellates from the coastal waters of Karachi, Pakistan, northern part of the Arabian Sea
Figure 1. Map of the Karachi coast showing location in the coastal and near-shore waters off of Manora Island (MI-1; 10m contour line and MI-2; 50m contour line) and Mubarak Village (MV-1; 10 m contour line and MV-2; 50 m contour line).
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.