Cell diatoms. Medical search. Frequent questions

Living diatoms make up a significant portion of the Earth's biomass: they generate about 20 to 50 percent of the oxygen produced on the planet each year, take in over 6.7 billion tonnes of silicon each year from the waters in which they live, and constitute nearly half of the organic material found in the oceans. (wikipedia.org)
Cell biomass, lipid and chitin productivity by the marine diatom Cyclotella sp was studied in a batch and fed-batch cultivation under sequential co-limitation of two macronutrients, silicon and nitrogen in a bubble column photobioreactor. (confex.com)
In large areas of the ocean deemed high nitrate, low chlorophyll (HNLC) regions, dissolved macronutrient (nitrogen, phosphorus, silica) concentrations are high in the surface but diatom biomass is consistently low. (uri.edu)
The result is a substantial global decrease in diatom biomass. (us-ocb.org)
Depending on foraminiferal species, and in addition to diatom biomass, diatom frustule shape, size and species are key factors driving the abundance and diversity of foraminifera in mudflat habitats. (lu.se)

Diatoms are a type of plankton called phytoplankton, the most common of the plankton types. (wikipedia.org)
In summary, my thesis enhances our understanding of the evolutionary potential of phytoplankton in general, and metal tolerance in diatoms specifically. (gu.se)
Diatoms dominated the phytoplankton community in all mesocosms, irrespective of inoculum. (int-res.com)
Seaweed are large plants made up of many cells and phytoplankton are small, single-celled plants. (cdc.gov)
Dinoflagellates and diatoms are two different types of phytoplankton and are most often found in salt water or brackish water, including in estuaries. (cdc.gov)
Two major groups of marine phytoplankton, diatoms and dinoflagellates, produce HAB toxins. (medscape.com)

A diatom (Neo-Latin diatoma) is any member of a large group comprising several genera of algae, specifically microalgae, found in the oceans, waterways and soils of the world. (wikipedia.org)
We focus on two groups of marine unicellular algae that master such processes, one of which are diatoms. (zeiss.com)
Protein phosphorylation regulates actomyosin-driven vesicle movement in cell extracts isolated from the green algae, Chara corallina. (bio.net)
Taking inspiration from the structure of diatom algae frustules and motivated by the need for new detecting strategies for emerging nanopollutants in water, we analyze the potential of nanoporous silica tablets as metering devices for the concentration of biomolecules or nanoparticles in water. (springer.com)
Taking inspiration from the exoskeleton (frustule) of diatom algae [ 23 ], in this work, we conceptualize nanoporous metering tablets for the concentration of some classes of biomolecules and nanoparticles in water. (springer.com)
These shellfish are filter feeders and, therefore, accumulate toxins produced by microscopic algae in the form of dinoflagellates and diatoms. (medscape.com)
DEs are a type of naturally occurring soft siliceous sedimentary rock, consisting of the fossilized exoskeleton of unicellular algae, which are called diatoms. (bvsalud.org)

The unique feature of diatoms are that they are surrounded by a cell wall made of silica (hydrated silicon dioxide), called a frustule. (wikipedia.org)
The main difference between these and free living diatoms is that they have lost their cell wall of silica, making them the only known shell-less diatoms. (wikipedia.org)
These tiny cells can form an extracellular cell wall that is made from simple materials like silica or calcium carbonate with exquisite morphologies, unequaled by any man-made process. (zeiss.com)
Diatoms are one group of unicellular organisms that can form silica elements within their cells and then exocytose them. (zeiss.com)
One of the challenges for diatoms is that the silica building blocks (soluble molecules of silicic acid) are very dilute in sea water (about 0.1 mM when it takes more than 1 mM to get above saturation levels). (zeiss.com)
Valves showing variation in silicification reflect an ecomorphological response to available silica, while valves with size-related variations show morphological modification brought about by vegetative cell divisions. (go.jp)
Diatoms use silicic acid to create their silica cell wall, which is made during cell division. (confex.com)
In my first project, we demonstrate for seven species of diatoms that the presence of chemical grazer cues induces thickening of their silica shells at the cost of reduced growth rates. (dtu.dk)
Diatoms build silica shells and produce organic carbon at the ocean surface. (us-ocb.org)
Today, much of the silica dissolves relatively quickly as the particles consisting of dead diatoms sink (e.g. after blooms). (us-ocb.org)
Their most conspicuous feature is a silica shell formed around their cells. (us-ocb.org)
As a result of lower seawater pH, the silica shells of diatoms dissolve more slowly. (us-ocb.org)
Ultimately, this loss of silica from the surface ocean causes a global decline in diatoms, reaching -10% by the year 2100 and -26% by 2200. (us-ocb.org)
It is well known that the biological control of oceanic silica cycling is dominated by diatoms, with sponges and radiolarians playing additional roles. (lu.se)

Dinoflagellates and diatoms can make the water different colors, including red, brown, or golden. (cdc.gov)
Blooms caused by dinoflagellates and diatoms are called algal blooms. (cdc.gov)
Dinoflagellates and diatoms can cause harm to people and animals by making toxins or growing too dense. (cdc.gov)

Diatoms are protists that form massive annual spring and fall blooms in aquatic environments and are estimated to be responsible for about half of photosynthesis in the global oceans. (wikipedia.org)
The Southern Ocean (SO) is the largest of these environments, and when exogenous Fe is supplied to this region, large diatoms blooms and subsequent carbon export are promoted. (uri.edu)
ABSTRACT: Many diatom species have the ability to form benthic resting stages, but the importance of these stages as a supply for planktonic blooms is uncertain. (int-res.com)
Harmful algal blooms of dinoflagellates or diatoms are often called red tides because they can make the water appear red. (cdc.gov)
Four distinct blooms were documented with cell densities ranging from 3.2쎷 to 5.0쎹 cells l-1. (researchgate.net)

Diatoms have two distinct shapes: a few (centric diatoms) are radially symmetric, while most (pennate diatoms) are broadly bilaterally symmetric. (wikipedia.org)
and Haynesina germanica is feeding almost solely on medium-large pennate diatoms. (lu.se)

Another classification divides plankton into eight types based on size: in this scheme, diatoms are classed as microalgae. (wikipedia.org)
Under different nutrient starvation, microalgae can accumulate large quantities of neutral lipid in the form of triacylglycerol (TAG) within the cell cytoplasm [ 11 ]. (hindawi.com)
New research has uncovered fresh insight into how diatoms - microalgae that produce the oxygen for every fifth breath we take - survive in the harsh environment of polar sea ice. (essex.ac.uk)

article{7081839, abstract = {{Although sexual reproduction is believed to play a major role in the high diversification rates and species richness of diatoms, a mechanistic understanding of diatom life cycle control is virtually lacking. (ugent.be)

Across the 9 species of diatoms examined, including the 3 single-celled species (Ditylum brightwellii, Thalassiosira pseudonana, and T. weissflogii), 4 chain-forming coastal bloom diatoms (T. aestivalis, Skeletonema costatum, Chaetoceros debilis and C. compressum) and 2 large floating open ocean species (Ethmodiscus sp. (edu.au)
The ubiquitous nitrate-storing diatom Skeletonema marinoi was studied as both axenic cultures and laboratory-produced diatom-bacteria aggregates. (frontiersin.org)

Diatoms are unicellular organisms: they occur either as solitary cells or in colonies, which can take the shape of ribbons, fans, zigzags, or stars. (wikipedia.org)

We explored the inducibility of stickiness in six species of diatoms. (dtu.dk)

Unusually for autotrophic organisms, diatoms possess a urea cycle, a feature that they share with animals, although this cycle is used to different metabolic ends in diatoms. (wikipedia.org)
Diatoms are classified as eukaryotes, organisms with a nuclear envelope-bound cell nucleus, that separates them from the prokaryotes archaea and bacteria. (wikipedia.org)
It is an asymmetric cell division that occurs rarely in some unicellular and acellular organisms. (physicsforums.com)
When diatoms shrink, they may become less desirable prey for larger organisms, potentially disrupting the flow of energy in the ecosystem. (physicsforums.com)
While it is known that more acidic seawater will create difficulties for calcifying organisms (e.g. corals or coccolithophores), diatoms have so far been considered to be resilient against, or even benefit from, ocean acidification. (us-ocb.org)
This finding is in sharp contrast to the previous consensus of ocean research, which sees calcifying organisms as losers, but diatoms being little affected, or even a winner of ocean acidification. (us-ocb.org)
Diatoms are single cell organisms living in fresh water. (canadiannaturephotographer.com)
Diatoms are found in nearly all marine and freshwater habitats and are important to the world's eco-system as they are responsible for 20% of the world's photosynthesis - the process by which organisms harvest energy from the sun - and play a key role in the ecology of sea ice. (essex.ac.uk)
This coupling allows the identification of the organisms found in or around three foraminiferal species through molecular tools combined with a direct counting of foraminifera and diatoms present in situ through microscopy methods. (lu.se)
A biofilm is an assemblage of microbial cells that is irre- organisms could attach. (cdc.gov)

Here, a sex-inducing pheromone (SIP+) of the benthic pennate diatom Seminavis robusta was identified by comparative metabolomics, subsequently purified, and physicochemically characterized. (ugent.be)
Diatoms also grow attached to benthic substrates, floating debris, and on macrophytes. (wikipedia.org)
This enables the transition from vegetative cells in the surface to resting stages that can survive the winter in the benthic zone. (dtu.dk)
Mesocosms were inoculated with various combinations of benthic and/or planktonic cells, sampled from the coastal SE Arabian Sea, and the development of the planktonic community was followed. (int-res.com)

Other diatoms in symbiosis with nitrogen-fixing cyanobacteria are among the genera Hemiaulus, Rhizosolenia and Chaetoceros. (wikipedia.org)

Chapter 4 investigated how three SO diatoms ( Fragilariopsis cylindrus , Pseudo-nitzschia arenysensis , and Thalassiosira tumida ) interact with associated bacterial communities under Fe stress. (uri.edu)
Published in the leading ISME Journal , the study, led by Professor Graham Underwood at Essex and Professor Thomas Mock from the University of East Anglia, focused on the polar diatom Fragilariopsis cylindrus, which is able to thrive under the harsh conditions of sea ice. (essex.ac.uk)

When conditions change from replete to deplete, diatoms form aggregates that sink rapidly to the bottom. (dtu.dk)
In my third project, we discovered that some diatoms form aggregates in the presence of grazer cues. (dtu.dk)
what they do is the CO2 in from the atmosphere into this complex food web where much of it is recycled and comes right back out again, but some of it stays as organic carbon in the form of aggregates, dead cells, fecal pellets from zooplankton. (learner.org)
Diatom-bacteria aggregates are key for the vertical transport of organic carbon in the ocean. (frontiersin.org)
Since some of the aggregate-forming diatom species store nitrate intracellularly, we explored the fate of intracellular nitrate and its availability for microbial metabolism within anoxic diatom-bacteria aggregates. (frontiersin.org)
When exposed to a light:dark cycle and oxic conditions, S. marinoi stored nitrate intracellularly in concentrations >60 mmol L -1 both as free-living cells and associated to aggregates. (frontiersin.org)
Intracellular nitrate was used up within 2-3 days after shifting diatom-bacteria aggregates to dark and anoxic conditions. (frontiersin.org)

Diatoms are major primary producers in the oceans with short generation times, flexible reproductive strategies, and high standing genetic diversity. (gu.se)
Figure 1: Slower solubility of diatom shells in acidified oceans leads to global diatom decline. (us-ocb.org)
Warmer oceans make it harder for diatoms to do so. (aeqai.com)

This endosymbiont has lost its photosynthetic properties, but has kept its ability to perform nitrogen fixation, allowing the diatom to fix atmospheric nitrogen. (wikipedia.org)
Nitrate is used by diatoms to produce cellular material and nitrogen bearing metabolites, such as chitin. (confex.com)
Low nutrient medium addition rate shuts down lipid production, and is selective for chitin production, and cell production rate is limited by the addition of silicon and nitrogen. (confex.com)
In high nutrient medium addition rate, lipid production is maintained during cell production, chitin production is maintained, but reduced, and the cell production rate is not limited by the addition of silicon and nitrogen. (confex.com)
Our results revealed that PBS degradation and re-synthesis comprise a rapid response to nitrogen fluctuations, with coordinated populations of cells undergoing pigment modifications. (osti.gov)
Thirty-one percent of the diatom-derived nitrate was converted to nitrogen gas, indicating that a substantial fraction of the intracellular nitrate pool of S. marinoi becomes available to the aggregate-associated bacterial community. (frontiersin.org)
Hence, aggregate-associated diatoms accumulate nitrate from the surrounding water and sustain complex nitrogen transformations, including loss of fixed nitrogen, in anoxic, pelagic microniches. (frontiersin.org)

During the cultivation in the photobioreactors the cell suspension was assayed for cell number density, dissolved silicon and nitrate concentrations in the media. (confex.com)
Stable 15 N isotope incubations under dark and anoxic conditions revealed that axenic S. marinoi is able to reduce intracellular nitrate to ammonium that is immediately excreted by the cells. (frontiersin.org)

2020. Differences in metal tolerance among strains, populations, and species of marine diatoms-importance of exponential growth for quantification. (gu.se)
Their analyses of data from experiments, field observations, and model simulations suggest that ocean acidification could drastically reduce diatom populations. (us-ocb.org)

The two pennates F. cylindrus and P. arenysensis recruited distinct bacterial communities from the centric T. tumida , but the +Fe and -Fe bacterial communities were not significantly different for all three diatoms. (uri.edu)

In Chapter 3, metatranscriptomic sequencing was used to examine the gene expression response of a SO diatom community and their associated bacteria to Fe-amendment incubations during the 2016 WAP cruise. (uri.edu)

This work sought to determine SO diatom biogeography and investigate their potential Fe-limitation coping strategies. (uri.edu)
Chapters 1 and 2 focused on determining diatom biogeography and community structure in the western Antarctic Peninsula (WAP), the Ross Sea Polynya (RSP), and surrounding HNLC Antarctic Circumpolar Current (ACC) waters. (uri.edu)
Ultimately, this dissertation work adds to our understanding of diatoms as important players in the SO ecosystem by assessing their biogeography and responses to varying Fe concentrations using molecular techniques that capture their highly diverse nature. (uri.edu)

Most diatoms produce a sticky, slimy substance called EPS (extracellular polymeric substances) which protects them from changes in the environment. (essex.ac.uk)
Biofilm-associated cells can be differentiated from their suspended counterparts by generation of an extracellular polymeric substance (EPS) matrix, reduced growth rates, and the up- and down-regulation of specific genes. (cdc.gov)
Two major thrusts in the last decade cells that is enclosed in an extracellular polymeric substance have dramatically impacted our understanding of biofilms: the matrix. (cdc.gov)

Although there are limitations due to the lack of species coverage in DNA sequence databases and to the difficulty to compare morphological and molecular data, this study highlights the relevance of combining molecular with morphological tools to study trophic interactions and microbiome communities of protists at the single-cell scale. (lu.se)

It has been shown that for dead marine diatom cells or diatom cells which are severely stressed metabolically, larger cells sink faster than small cells as dictated by Stokes' Law. (edu.au)
In several marine diatom species between 5 and 100 Î¼m in diameter, deviations from the maximum slope of the volume versus sinking rate relationship could be used to quantify the physiological reduction of sinking rates. (edu.au)
Here we tested the efficacy of SCG to generate a draft genome assembly from a single sample, in this case a cell belonging to the broadly distributed MAST-4 uncultured marine stramenopiles. (nature.com)
Here we used SCG to generate the first draft genome assembly from a cell belonging to the broadly distributed group of MAST-4 uncultured marine stramenopiles 18 . (nature.com)
Regulation of the expressions of HCO3- uptake and intracellular carbonic anhydrase in response to CO2 concentration in the marine diatom Phaeodactylum sp. (bio.net)
2022. Intraspecific variation in metal tolerance modulate competition between two marine diatoms. (gu.se)
In at least two mass mortality events in Monterey Bay, California, planktivorous fish were implicated as vectors of the neurotoxin domoic acid (DA) from diatoms to sea birds and marine mammals. (researchgate.net)
Since diatoms are one of the most important plankton groups in the ocean, their decline could lead to a significant shift in the marine food web or even a change in the ocean carbon sink. (us-ocb.org)
The marine diatom Amphiprora paludosa synthesized 65.64% lipid under 0.026 mM of Fe-EDTA [ 13 ]. (hindawi.com)

DA was detected in fish viscera samples whenever toxic diatom densities reached 䒟 cells l-1 in surface waters, suggesting that anchovies and sardines regularly consume toxic diatoms when present. (researchgate.net)
The resulting dissolved silicon is returned to the surface by upwelling waters, where it supports the growth of more diatoms. (us-ocb.org)

As early as 1973, F have primarily been characterized as planktonic, freely Characklis (4) studied microbial slimes in industrial water sys- suspended cells and described on the basis of their growth tems and showed that they were not only very tenacious but characteristics in nutritionally rich culture media. (cdc.gov)

The shells of dead diatoms can reach as much as a half-mile (800 m) deep on the ocean floor, and the entire Amazon basin is fertilized annually by 27 million tons of diatom shell dust transported by transatlantic winds from the African Sahara, much of it from the Bodélé Depression, which was once made up of a system of fresh-water lakes. (wikipedia.org)
Diatomaceous earth (diatomite) is a collection of diatom shells found in the earth's crust. (wikipedia.org)
From previous quantification of the defensive value of thicker shells, we demonstrate that the trade-off is near neutral, i.e., that the benefits (lower mortality rate) is near equal the costs (lower growth rate), and that this may help explain why diatoms are a particularly diverse group. (dtu.dk)
However, this is not an advantage-it causes diatom shells to sink into deeper water layers before chemically dissolving and being converted back into the inorganic nutrient silicic acid. (us-ocb.org)
This means this nutrient is more efficiently exported to the deep ocean and so becomes scarcer in the light-flooded surface layer where diatoms require it to form new shells. (us-ocb.org)
Their cells are covered with silicon shells and the shell of every species has a unique appearance. (lu.se)

Cells isopolar, bilaterally symmetrical, valves linear-lanceolate or elliptical. (museumwales.ac.uk)

Diatoms shrink as a survival mechanism in response to unfavorable environmental conditions. (physicsforums.com)
However, sinking is also of crucial survival value to diatoms and a part of their life cycle. (dtu.dk)
The hydrographic conditions and timing of formation, survival, and germination of diatom resting stages in SE Arabian Sea are discussed. (int-res.com)

Fe addition elicited varying responses by different diatom genera, with more prevalent diatoms experiencing more differential regulation of Fe-responsive pathways and proteins. (uri.edu)
In addition, some diatom genera expressed components of a putative Fe-siderophore uptake system, including an Fe-siderophore outer membrane receptor protein and corresponding ABC transporter components. (uri.edu)

The induction of cell cycle arrest by a pheromone, chemically distinct from the one used to attract the opposite mating type, highlights the existence of a sophisticated mechanism to increase chances of mate finding, while keeping the metabolic losses associated with the release of an attraction pheromone to a minimum. (ugent.be)
Our work is the first to show the metabolic pathway and changing chemistry of the EPS that protect the diatoms. (essex.ac.uk)

There are many questions regarding how diatoms concentrate silicon in their cells, in which organelles, and to what concentrations. (zeiss.com)
Warm colors indicate higher Si concentrations both in the cell wall and the cell interior. (zeiss.com)
Dr. Gal and his team published their breakthrough of a new methodology that uses cryo electron microscopy (cryoEM) and energy dispersive X-ray spectroscopy (EDS) to measure silicon concentrations within cells using ZEISS Crossbeam . (zeiss.com)
cells then become sticky and due to high cell concentrations, they collide, stick together, and sink out. (dtu.dk)

One promising approach to study these lineages is single cell genomics (SCG), whereby an individual cell is captured from nature and genome data are produced from the amplified total DNA. (nature.com)
A new study led jointly between the University of Essex and the University of East Anglia is a world first in showing how this slime is produced by a key polar diatom species for which the genome sequence recently became available. (essex.ac.uk)
Looking to future research on diatom EPS, Professor Mock added: "Using the latest genome-editing tools such as CRISPR/Cas, we are very keen to target some of the genes involved in the production of EPS to identify their specific role, which can be very relevant for biotechnological applications such as tolerance to freezing or enhancing secretion of bioactive compounds. (essex.ac.uk)

However, cross-contamination from contemporary cells at the sediment surface made age determination inconclusive. (gu.se)
I re-directed focus on the contemporary diatom population present on the sediment surface. (gu.se)
The most significant differences among inoculum types were altered species composition, and the timings of the maximum cell abundances, which lagged behind in the sediment mesocosms. (int-res.com)
In the sediment the cells of the genus Pediastrum are well preserved because there is silicon in the cell walls. (lu.se)

Diatoms are a group of highly diverse photosynthetic eukaryotes that account for about 40% of oceanic primary production. (uri.edu)

Domoic acid is produced by the diatom Nitzschia pungens . (medscape.com)

Diatoms are the most important primary producers in the ocean and play an important role in transferring carbon dioxide (CO 2 ) from the atmosphere into the deep ocean. (us-ocb.org)

Cryo electron microscopy and EDS offer insights on how diatoms efficiently work with inorganic materials. (zeiss.com)
This genetic inventory was sufficient to place the cell within the ToL using multigene phylogenetics and provided preliminary insights into the complex evolutionary history of horizontal gene transfer (HGT) in the MAST-4 lineage. (nature.com)
Using these partial data we included the MAST-4 cell in the ToL using multigene phylogenetics and gained insights into its complex evolutionary history of horizontal gene transfer (HGT). (nature.com)

The advantage of cryoEM is that the cells are vitrified in their pristine biological state, without any alteration of the cellular composition. (zeiss.com)
Lévy walks are observed in various biological movements and agents, ranging from cells and insects to mammals, including humans. (google.com)
Within this work, and considering the discussed background, another D. tertiolecta clone (CCMP 1320) was selected and tested against several cancer cell lines, and a bioactivity-guided fractionation approach allowed to identify the source of the biological activity observed within the extracts of this green alga. (frontiersin.org)
In fact, the shell of the diatom appears to be the strongest known biological material relative to its density. (dtu.dk)
The course gives an introduction on the general (cell) biological processes in life forms, next to dealing with major concepts in energy generation (heterotrophs and autotrophs) as well as genetics and genetic information. (ugent.be)
After a summer sampling trip to Michigan's Lake of the Clouds, students at the University of Michigan's Biological Station have uncovered three new diatom species, according to a release from the school. (lakescientist.com)

Live cells were not observed but spines on both apices suggest that this species may not form the zigzag colonies typical of common Grammatophora species. (go.jp)
Cyanobacteria can be found as single cells or as groups that form threads, balls, or sheets. (cdc.gov)
Biofilms may form on a wide variety of surfaces, isms (based on cell morphology). (cdc.gov)

The oldest fossil evidence for diatoms is a specimen of extant genus Hemiaulus in Late Jurassic aged amber from Thailand. (wikipedia.org)
Only a few cells of the ichtyotoxic (ichtyo = fish) genus Pseudochattonella were recorded on this cruise. (smhi.se)

We knew how important EPS were in the ecology of diatoms, but had never discovered how they adapt to the changing environment, or shown the links between field measurements, cell culture work and gene expression," explained Professor Underwood. (essex.ac.uk)

As such, SO diatoms are major players in the global carbon cycle and were the focus of this dissertation. (uri.edu)
Diatoms play an important role in the ocean carbon cycle. (dtu.dk)

My inspiration comes from microscopic images of various cells and microorganisms as the basis of all life. (frankisart.com)

Although 'vegetative division' can have different meanings in difference contexts, in your link it seems to mean just mitotic (normal cell division) as distinct from meiotic divisions , which reduce the number of chromosomes by half to make germ cells. (physicsforums.com)

In the bacterial metatranscriptome, upregulation of Fe-siderophore uptake genes was observed, possibly indicating increased competition for Fe among the stimulated diatom-associated bacterial community. (uri.edu)
On the 2016 WAP cruise, a bacterial addback experiment was completed with these previously antibiotic-treated diatoms under Fe-rich (+Fe) and Fe-limited (-Fe) conditions. (uri.edu)

An estab- lished biofilm structure comprises microbial cells and EPS, has a defined architecture, and provides an optimal environment for the exchange of genetic material between cells. (cdc.gov)

4. How does shrinking affect diatoms' role in the ecosystem? (physicsforums.com)
Shrinking can affect diatoms' role in the ecosystem by altering their position in the food chain. (physicsforums.com)

A dominance of spring bloom related diatoms were evident. (smhi.se)
DA was only detected in fish when toxic diatom species were also present in the water, suggesting that the toxin is quickly depurated and that fish are only dangerous vectors during the bloom period. (researchgate.net)

Lipid production in diatoms is a way of energy storage. (confex.com)
The qualitative analyses of neutral lipid bodies under stress conditions were performed by confocal microscopy and revealed bright golden-yellow lipid droplets in stress exposed cells. (hindawi.com)

Here we used a MAST-4 cell as a model to test SCG methods with uncultured taxa. (nature.com)

2016. "A Sex-Inducing Pheromone Triggers Cell Cycle Arrest and Mate Attraction in the Diatom Seminavis Robusta. (ugent.be)

This allowed us to differentiate 2 different components of sinking rate control, the ballasting component (driven by changes in cell composition and volume) which, when dominant, causes sinking rates to be proportional to cell volume and the energy-requiring, protoplast and vacuolar component which, when active, allows sinking rates to become independent of cell volume. (edu.au)
Diatom-targeted high-throughput molecular barcoding data and corresponding environmental metadata were analyzed to determine diatom community composition and the factors driving their structure. (uri.edu)

Effects of chloroplast DNA content on the cell proliferation and aging in Chlamydomonas reinhardtii. (bio.net)

Previous ensemble studies have shown that cyanobacteria respond to changes in nutrient availability by modifying the structure of PBS complexes, but this process has not been visualized for individual pigments at the single-cell level due to spectral overlap. (osti.gov)
Trophic strategies of intertidal foraminifera explored with single-cell microbiome metabarcoding and morphological methods : What is on the menu? (lu.se)

In fed-batch, experiments are carried in two stages, stage one for cell synchronization, and stage two for the controlled addition of nutrients. (confex.com)

It is now well documented how a thicker shell decrease mortality rate in diatoms. (dtu.dk)

However, no correlation between sinking rate and cell volume was found for rapidly growing cells maintained at saturating irradiances. (edu.au)
Not only could they provide quantitative measurements of intracellular silicon levels, but they also found out that these cells keep a constant pool of this element in their cells. (zeiss.com)
We further tested the effect of nutrient limitation (Si and N) on the stickiness of five diatom species and found to our surprise that nutrient limitation did not increase the stickiness. (dtu.dk)

Diatoms can shrink in response to changes in temperature, light, salinity, and nutrient availability. (physicsforums.com)
In my thesis, I use the Baltic Sea and metal pollution as a model system to study the evolution of diatoms in response to global change. (gu.se)

Whereas the transfer of DA from planktivorous fish to piscivorous predators has been well established, the relationship between toxin levels in plankton-feeding fish and the regional abundance of DA-producing diatoms has not been documented. (researchgate.net)

The deliberate addition of silicic acid controls cell division, henceforth the production of stress-induced metabolites, such is lipids. (confex.com)

Similar to plants, diatoms convert light energy to chemical energy by photosynthesis, but their chloroplasts were acquired in different ways. (wikipedia.org)
Diatoms and plants make most of the oxygen on Earth. (aeqai.com)

Then, they developed a sophisticated procedure to measure the concentration of silicon with EDS, while taking advantage of the 3D information to understand where in the cell they are measuring. (zeiss.com)
Authors showed that a fraction from D. tertiolecta CCMP364 containing 95% of violaxanthin displayed 50% growth inhibition on the MCF7 breast cancer cell line at a concentration of 11.7 μg/mL. (frontiersin.org)

Organisms5

Chemicals and Drugs6

Phenomena and Processes2

Health Care1

Biomass5

Phytoplankton6

Algae7

Silica14

Dinoflagellates and diatoms3

Blooms5

Pennate diatoms2

Microalgae3

Abstract1

Skeletonema2

Unicellular organisms1

Species of diatoms1

Organisms10

Benthic4

Chaetoceros1

Fragilariopsis2

Aggregates7

Oceans3

Nitrogen7

Nitrate2

Populations2

Cylindrus1

Bacteria1

Biogeography3

Extracellular3

Protists1

Marine9

Waters2

Planktonic1

Shells6

Bilaterally1

Survival3

Genera2

Metabolic2

Concentrations4

Genome3

Sediment4

Eukaryotes1

Domoic1

Primary producers1

Insights3

Biological6

Form3

Genus2

Ecology1

Carbon2

Microorganisms1

Distinct1

Bacterial2

Microbial1

Ecosystem2

Bloom2

Lipid2

Uncultured taxa1

20161

Composition2

Chloroplast1

Single cell2

Stages1

Decrease1

Found3

Response2

Abundance1

Metabolites1

Plants2

Concentration2