Microalgae
Articles tagged with Microalgae
Climate change in the past: first indicators of resilience in tropical life, provided that global warming did not exceed 1.5 degrees
A recent study found that tropical algae were largely unaffected by periods of global warming up to 1.5 degrees Celsius in the distant past. This resilience provides valuable insights into the potential consequences of climate change and supports the goal of limiting global warming to 1.5 degrees.
Researchers rebuild microscopic circadian clock that can control genes
University of California San Diego scientists have solved how the circadian clocks within microscopic bacteria precisely control gene expression during the 24-hour cycle. The researchers identified six proteins needed to rebuild this clock, generating a simplified cyanobacterial system with a clock that only needs.
Scientists uncover hidden role of microalgae in spreading antibiotic resistance in waterways
New research reveals microalgae play a hidden role in spreading antibiotic resistance genes in natural water environments. The study highlights how microalgae create microenvironments that foster the growth and transmission of these genes, often found in bacteria.
Unexpected feedback in the climate system
Researchers found a surprising correlation between West Antarctic Ice Sheet retreat and marine algae growth over the past 500,000 years. The study suggests that global warming may lead to reduced CO2 uptake if the ice sheet continues to shrink.
More sustainable food and less waste by moving microalgae beyond being niche ingredients
The ALLIANCE project aims to develop optimised multi-product biorefineries for microalgae to increase utilisation efficiency and produce ingredients for various industries. By implementing circular production models, the partners will reduce waste generation and make sustainable microalgae-based products more affordable.
Harnessing algae for a greener way to create functional gold nanoparticles
Researchers at The University of Osaka have developed an eco-friendly method to produce highly stable and biocompatible gold nanoparticles using microalgae. This breakthrough enables the creation of safer and more effective cancer therapies with fewer side effects for patients.
Turbo Platform for Plant Research
Scientists have created a micro-algal platform that allows for automated and fast testing of chloroplast genetic modifications, opening up plant chloroplasts to high-throughput applications. This platform enables researchers to fine-tune genetic circuits and identify which modifications have real potential.
Algae and water fleas in lakes: Light color influences food webs
A recent study found that light color affects phytoplankton growth and nutrient cycling in lake ecosystems. The researchers discovered that the less light available to microalgae, the more important the color of light became for their growth.
Researchers reveal molecular assembly and efficient light harvesting of largest eukaryotic photosystem complex
Researchers discovered the largest eukaryotic photosystem I-fucoxanthin-chlorophyll supercomplex in coccolithophores, which can expand its light-harvesting cross-section by three to four times while maintaining over 95% energy conversion efficiency.
Diver-operated microscope brings hidden coral biology into focus
Researchers developed a cutting-edge microscope to study coral photosynthesis and health in their natural habitat. The BUMP imaging system provides unprecedented insights into coral reefs, advancing efforts to understand coral bleaching.
New 3D modeling method quantifies light-shading impact of freshwater microalgae
A novel 3D modeling method accurately quantifies the shading potential of over 800 microalgal species, affecting underwater light conditions and ecosystem balance. The study provides a comprehensive Projected Area Database for freshwater microalgae, enabling researchers to estimate the ecological impact of algal blooms.
Microalgae remove antibiotic residues from wastewater, reducing environmental contamination
Researchers have discovered that microalgae species can remove antibiotic residues from water, including sulfamethoxazole and trimethoprim. This process also produces biomass with potential commercial value, including biodiesel production.
With new database researchers may be able to predict rare milky seas bioluminescent, glowing event
A new database of 400 years of sightings compiled by researchers at Colorado State University may help anticipate when and where milky seas will occur. The archive includes eyewitness reports, satellite data, and individual accounts submitted to the Marine Observer Journal.
Study: Microalgae and bacteria team up to convert CO2 into useful products
Researchers have created a modular co-culture bioreactor that combines the photosynthetic finesse of microalgae with the production capabilities of bacteria Escherichia coli. The system successfully produces valuable compounds such as lycopene and green fluorescent protein.
Magnetic microalgae on a mission to become robots
Researchers developed magnetic micro swimmers covered in a thin coating of magnetic nanoparticles, unaffected by the coating. The algae maintained their swimming speed after magnetization and navigated 3D-printed channels using magnetic guidance.
Presence of potentially toxic microalgae confirmed in La Concha Bay
Researchers confirm presence of potentially toxic Ostreopsis ovata algae in La Concha Bay, highlighting importance of substrate type and need for further study. Continued monitoring is advised to determine level of concentration and control situation.
Why we need to expand the search for climate-friendly microalgae
Researchers highlight microalgae's capacity to mitigate CO2 emissions while driving sustainable industry, with 'smart microalgal bioprospecting' needed to unlock its full potential. Discovering new species with enhanced growth rates or lower resource demands could reduce costs and increase commercial viability.
Researchers see potential in cultivation of a special microalga
A new study from DTU National Food Institute finds that temperature and light intensity play a crucial role in the yield of various nutrients produced by the microalga Nannochloropsis oceanica. The research suggests a two-stage cultivation process to optimize nutrient production, paving the way for sustainable food production.
Freshwater alga could be the next superfood that feeds the world
A new study reveals that Chlorella Vulgaris, a freshwater microalga rich in protein and essential nutrients, holds immense promise as a sustainable and nutritious food source. The researchers emphasize the need for advancements in cultivation techniques, processing methods, and sensory improvements to enhance its appeal.
Phytochromes: The “eyes” that enable microalgae to find their way in the depths
Researchers discovered that diatoms possess phytochromes, which enable them to detect changes in the underwater light spectrum and sense their vertical position. This adaptation allows microalgae to adjust their biological activity in response to seasonal changes.
Greener and cleaner: Yeast-green algae mix improves water treatment
Researchers from Osaka Metropolitan University have discovered a combination of green algae and yeast that enhances wastewater treatment efficiency. The mixture boosts the growth environment, uptake of ammonium and phosphate ions, making it an effective solution for wastewater treatment facilities.
CRISPR/Cas9 modifies euglena to create potential biofuel source
Researchers at Osaka Metropolitan University used CRISPR/Cas9 to create a strain of Euglena that produces wax esters with shorter carbon chains, improving their cold flow and suitability as a biofuel feedstock. This breakthrough could potentially replace petroleum-based production of wax esters with biological sources.
Photosynthesis in near darkness
A new study reveals that Arctic microalgae can build up biomass through photosynthesis as early as March, despite barely above the horizon sun. This discovery shows that photosynthesis is possible under much lower light conditions than previously assumed, potentially expanding the global ocean's photosynthetic habitat.
3D laser printing with bioinks from microalgae
A research team at Heidelberg University has successfully developed a new generation of biocompatible materials for additive manufacturing using microalgae. The materials were extracted from the raw materials of diatom and green alga species and proved to be suitable as inks for high-resolution 3D laser printing.
Micromachines steered by microorganisms
Researchers created microscopic vehicles propelled by swimming green algae, which can be maneuvered by the algae. The team developed two types of vehicles: the rotator and the scooter, with the latter displaying erratic rolling motions.
Zombie cells in the sea: Viruses keep the most common marine bacteria in check
Research reveals phages infecting SAR11 bacteria, causing massive cell death and creation of 'zombie' cells. These cells, lacking ribosomes, are thought to be recycled for new phage DNA production, highlighting the importance of microbial interactions in the ocean.
Green-to-red transformation of Euglena gracilis using bonito stock and intense red light
Researchers at Tokyo University of Science discovered a simple method to increase Euglena gracilis carotenoid content ratio by exposing it to strong red-light irradiation in bonito stock. The approach has potential to enhance the nutritional profile and scalability of this edible microalga.
How seaweed became multicellular
Researchers found that macroalgae acquired new genes for cell adhesion, differentiation, communication, and transport from viruses, which played a critical role in their evolution to multicellularity. The study provides valuable genomic resources for further studies on the biology of macroalgae.
Microalgae with unusual cell biology
Researchers studied Prorocentrum cordatum to understand its molecular processes, revealing a unique photosynthetic machinery that may help it adapt to changing light conditions. The findings could lead to improved understanding of harmful algal blooms and their role in climate change.
Scientists use blue-green algae as a surrogate mother for "meat-like" proteins
Researchers from the University of Copenhagen have developed a new method to produce protein-rich, sustainable foods with improved texture. By inserting foreign genes into cyanobacteria, they can create fibrous strands resembling meat fibers, which could be used in plant-based products.
New research shows how pollutants from aerosols and river run-off are changing the marine phosphorus cycle in coastal seas
New research reveals how human activities affect the marine phosphorus cycle in coastal seas, leading to changes in coastal biodiversity and ecosystem services. The study identifies an 'Anthropogenic Nitrogen Pump' that reduces phosphate levels, limiting algae growth, and enhances the utilization of dissolved organic phosphorus.
Cracking 6mA code to enhance lipid accumulation in microalgae
The study reveals the critical role of 6mA in lipid accumulation in Nannochloropsis oceanica under high light conditions. Disruption of 6mA levels affects gene expression and biomass production, highlighting its importance in optimizing microalgae for industrial uses.
Research advances toward goal of net zero carbon emissions
Researchers at the University of Houston have discovered that microalgae can be used to sequester carbon dioxide and convert it into mass-produced proteins, lipids, and carbohydrates. This process has the potential to transform food production, treat wastewater, and produce sustainable biofuels.
Climate change coping mechanism discovered in humble algae
Algae have adapted to cope with nutrient starvation by evolving a new cellular machinery that allows them to use sunlight for growth without iron. This discovery holds promises for biotechnology developments that could enhance crop productivity and support marine ecosystems.
Shining a light on tiny, solar-powered animals
A study by Hokkaido University researchers has discovered a wide diversity of symbiotic, photosynthetic microalgae associated with small, worm-like animals called acoels. Acoels form relationships with single-celled microalgae, storing them below their outer surface and creating energy using sunlight.
Role of microhabitats in shaping diversity of periphytic diatom assemblages
Researchers study microhabitats in Lake Tisza and find that diverse macrovegetation supports unique microhabitat diversity for benthic diatoms. Water management planning is crucial for maintaining biodiversity in multipurpose lakes.
Ancient viruses discovered in coral symbionts’ DNA
Researchers discovered fragments of RNA viruses embedded in coral partners' genomes, dating back 160 million years. The discovery provides insights into how corals fight off viral infections and may hold the key to understanding the ecological impact of viruses on reef health.
Toxic effects of pesticides on the marine microalga Skeletonema costatum and their biological degradation
The study investigates toxic effects of pesticides (chlorpyrifos, acetochlor, dicofol) on S. costatum growth and chlorophyll-a content, revealing varying toxicity levels among the pesticides. Marine microalgae partially degrade pesticides, with acetochlor showing stronger persistence.
Diatoms provide an attractive habitat for bacteria
A new study reveals that different species of bacteria colonize specific areas on diatoms, reflecting their metabolic properties. The findings provide insight into the complex interactions between algae and bacteria in marine environments.
Researchers cultivate microalgae for biofuel production
The study analyzed the growth and productivity of Botryococcus terribilis under different cultivation systems. Stress increased the production of lipids and hydrocarbons by 49% and 29%, respectively, while proteins decreased. The microalgae's metabolites have potential applications in biofuel synthesis, cosmetics, and food.
Researchers pursue green technology to capture carbon dioxide emissions
Researchers have been awarded a three-year grant to develop a microalgae-based system to capture carbon dioxide emissions from power plants. The system will use algae to sequester carbon from flue gases, generating valuable bioproducts like nutraceuticals and biofuels.
Red algae-derived metal-polysaccharide shows promise for anti-microbial applications because of its long and dense spikes
Researchers at Ben-Gurion University of the Negev discovered a new compound derived from marine red microalga that exhibits effective antimicrobial activity against bacteria and fungus. The compound's unique structure, featuring long and dense spikes, allows it to poke holes in bacterial membranes and kill off infections.
New species of microalgae discovered
Scientists have identified a new species of microalgae, Medakamo hakoo, which has the smallest known genome of any freshwater algae. The discovery could lead to the mass production of substances such as functional foods, cosmetics, and biofuels at low cost.
Microalgae could be the future of sustainable superfood in a rapidly changing world, study finds
Researchers believe microalgae could be a new kind of superfood due to its high protein and nutrition content. Algae can produce 167 times more biomass than corn annually while using the same amount of land, making it a more efficient food source.
An Old Yellow Enzyme helps algae combat photooxidative stress
Researchers found that an algal strain with a defective Old Yellow Enzyme biocatalyst exhibits oxidative damage due to insufficient light energy dissipation. The study suggests that the enzyme plays a crucial role in maintaining photosynthetic balance.
Increase in marine heatwaves expected to affect organisms at bottom of food chain, study suggests
Researchers found that larvae of the Atlantic mangrove fiddler crab survived less in warmer water and underwent physiological changes due to higher acidity. Marine heatwaves will be harmful to species and those that feed on them, with potential economic losses to fisheries. Further research is needed to understand the effects.
Aston University researchers ‘feed’ leftover coffee grounds to microalgae to produce low emission biodiesel
Researchers at Aston University have developed a method to produce high-quality biodiesel from spent coffee grounds by growing microalgae on the grounds. This innovative approach reduces competition with food crops and decreases greenhouse gas emissions from palm tree cultivation.
Research project seeks solutions for profitable algae production – great potential for climate change mitigation
A two-year research project aims to overcome technical difficulties in large-scale algae cultivation, a promising method for climate change mitigation. The ROBA project focuses on developing economically feasible algal cultivation processes using advanced measurement technologies and bioprocess engineering.
Onshore algae farms could be ‘breadbasket for Global South’
Growing onshore algae in seawater-fed aquaculture systems along the Global South's coasts could increase food production by 50% and feed 10 billion people by 2050. Algae provide high protein content, essential amino acids, and minerals found in meat, making them a sustainable solution to climate change.
Algae as microscopic biorefineries
Researchers introduce synthetic catalysts into algae cells, enabling chemical reaction upgrades to produce building blocks for polymers and chemicals. The process reduces reliance on fossil raw materials, using atmospheric carbon dioxide as a carbon source.
Tiny swimming robots treat deadly pneumonia in mice
Researchers at the University of California San Diego developed microscopic robots called microrobots that can swim around in the lungs and deliver medication. The microrobots safely eliminated pneumonia-causing bacteria in mice, resulting in 100% survival rates, whereas untreated mice died within three days.
Engineering industrial microalgae for producing healthy biological oil
Researchers discover two specific enzymes that assemble medium-chain fatty acids in marine microalgae Nannochloropsis oceanica, elevating MCT production and enabling customizable oils. The study paves the way for engineering industrial microalgae into efficient sustainable feedstock.
Milking molecules from microbes
A team of researchers developed a low-energy and efficient way to harvest and concentrate valuable chemicals from microalgae, which can be grown on waste materials. This membrane-based process enables continuous extraction and concentration of secreted metabolites, paving the way for large-scale bio-factories.
How protists crack the walls of algae
A team of researchers from the University of Cologne identified a possible key enzyme that enables algae-eating protists to dissolve algal cell walls. The study, published in Current Biology, reveals new insights into the molecular toolkit used by these organisms to interact with their prey.
Climate resilient microalgae could help restore coral reefs
Researchers from Uppsala University developed a new method to predict temperature tolerance in individual microalgae symbionts, enabling the identification of climate resilient cells. This study aims to accelerate coral reef restoration efforts by introducing more robust coral symbionts to combat climate change.
Glowing spider fossils prompt breakthrough study of how they were preserved at Aix-en-Provence
Researchers at the University of Kansas discovered that microalgae-produced diatoms played a crucial role in preserving ancient spider fossils at Aix-en-Provence. The unique chemical process, similar to industrial vulcanization, stabilized carbon-based exoskeletons and promoted sulfurization, resulting in exceptional fossil preservation.
Scientists explore a genetic sensor of blue light to double oil productivity in industrial microalgae
A research team has discovered a genetic sensor of blue light that regulates oil synthesis in industrial microalga, leading to double the microalgal productivity of oils. This finding has major implications for microalgae-based conversion of carbon dioxide to biofuels.
Scientists led by NTU Singapore produce oils from microalgae that could replace palm oil in food production
Scientists at NTU Singapore have developed a method to produce and extract oils from a type of common microalgae, which are edible and have superior properties as those found in palm oil. The newly discovered method would serve as a healthier and greener alternative to palm oil.
Cell division in microalgae: mitosis revealed in detail for the first time
Researchers at Bielefeld University have identified five key characteristics of mitosis in the microalga Volvox carteri, including a porous nuclear envelope and crucial centrosome function. They used confocal laser scanning microscopy to capture high-resolution images of live cell division and gain insights into the complex process.