Articles tagged with Cyanobacteria
A growing concern is rising algal bloom toxicity due to eutrophication and climate change, impacting aquatic organisms and ecosystem health. Toxic cyanobacteria like Microcystis sp. are becoming more prevalent in nutrient-rich waters, posing a risk to human drinking water safety.
Researchers aim to miniaturize and automate nitrogen fixation, making it available only when needed. By placing the apparatus in plant cells, they hope to reduce energy requirements and environmental problems associated with current methods.
Researchers found evidence of an early manganese-oxidizing photosystem in ancient South African marine sedimentary rocks, which predates the evolution of oxygenic cyanobacteria. This discovery supports the idea that manganese oxidation provided a stepping-stone for water-oxidizing photosynthesis.
Scientists at the University of California, Davis have successfully engineered a strain of photosynthetic cyanobacteria to grow without light. This breakthrough allows for cost-effective and controllable biofuel production in diurnal conditions.
Multicellular cyanobacteria developed over 2.3 billion years ago, coinciding with the Great Oxidation Event that increased atmospheric oxygen levels. This event is considered a significant climate shift, as multicellularity allowed for more efficient metabolism and paved the way for diverse life forms.
Researchers engineered blue-green algae to grow chemical precursors for fuels and plastics, a step towards replacing fossil fuels. The U.S. Department of Energy aims to obtain a quarter of industrial chemicals from biological processes by 2025.
Cyanobacteria produce a previously unknown molecule called AEG, which is thought to be the first genetic material. This discovery challenges our understanding of the evolution of life on Earth and has potential applications in gene silencing.
A Florida Tech researcher has been awarded a $400,000 NSF grant to develop ferrates, which can effectively remove cyanotoxins from drinking water. The project will explore the use of ferrates in both laboratory and field settings to combat the growing problem of cyanobacteria in water reservoirs.
Researchers at Arizona State University have developed a novel method that utilizes heat to enhance the yield and reduce costs of high-energy biofuels production. This breakthrough could pave the way for more widespread adoption of renewable energy sources, as the new process is more efficient and cost-effective than previous methods.
Researchers found a unique partnership between tiny algae and specialized bacteria that fix nitrogen from the atmosphere, supporting the oceans' fertilization and contributing to global carbon cycles. The discovery provides insights into an early stage in photosynthesis evolution, analogous to chloroplasts in plants.
Research by the University of Zurich reveals that global warming is compromising successful lake clean-ups by reducing water turnover and promoting harmful algal blooms. The warmer temperatures are particularly affecting large lakes in Central Europe, where overfertilization has led to cyanobacteria growth.
Cyanobacteria populations are increasing globally due to global warming, producing more toxins that harm humans and the environment. In Spain, toxic cyanobacteria blooms in wetlands have been linked to high mortality rates among wildlife and potential human health risks.
Researchers from Queen Mary University of London have identified a biological mechanism controlling electron transport in cyanobacteria, which could lead to more efficient solar-powered biofuel production. The discovery was made by exposing cells to different light conditions and observing the changes in electron transport pathways.
A Scripps-led study reveals that the nuisance seaweed Leptolyngbya crossbyana produces honaucins with potent anti-inflammation and bacteria-controlling properties. These compounds could one day treat chronic inflammatory conditions, bacterial infections, acne, and other skin conditions.
Using computer simulations at the Ohio Supercomputer Center, researchers aim to engineer cyanobacteria to thrive in diverse illumination conditions. By understanding light sensing and harvesting in Anabaena sensory rhodopsin bacteria, they hope to develop new properties for alternative energy via microbial conversion of light energy.
John Waterbury, a WHOI scientist emeritus, has been awarded the NAS Gilbert Morgan Smith Medal for his path-breaking discovery and characterization of ecologically important marine microorganisms. This achievement marked major advances in understanding marine food webs and nutrient cycling in ocean ecosystems.
A team of scientists led by Donald Bryant has corrected a decades-old assumption about how cyanobacteria make energy and synthesize cell materials. They discovered that these bacteria can complete the TCA cycle in a slightly different way, allowing them to produce energy.
University of Florida researchers have developed a compound that targets and reduces growth factors and tyrosine kinases in colon cancer cells, leading to effective tumor suppression without toxicity. The modified apratoxin S4 shows promise as a novel anticancer therapy.
Researchers at Ruhr-University Bochum have successfully removed a molecular switch in cyanobacteria that prevents premature breakdown of energy reserves. This allows for the use of excess energy for biotechnological purposes, such as hydrogen production.
A new model predicts which cyanobacterial genes are central to capturing energy from sunlight and other critical processes. The model identifies key bottleneck genes that control the expression of essential proteins.
A new study reveals that bacteria living in mosses on tree branches contribute to nutrient dynamics, sustaining the long-term productivity of coastal temperate rainforests. Large, ancient trees provide habitat for mosses and cyanobacteria, which fix nitrogen and fertilize the forest.
A research team at Arizona State University has developed a process that reprograms photosynthetic microbes to secrete high-energy fats, eliminating the need for costly additional processing steps. This breakthrough could make renewable biofuels more commercially viable.
Researchers discover that bacteria associated with mosses on tree branches are essential for nutrient dynamics, enabling the long-term productivity of coastal temperate rainforests. The study highlights the importance of preserving large old-growth trees to maintain these forests' health.
A marine bacterium uses a biochemical trick to recycle iron, conserving precious metal for photosynthesis and nitrogen production. This strategy, called 'hot bunking,' allows the organism to thrive in iron-poor waters, increasing ocean productivity.
Research from the University of Gothenburg reveals that cyanobacteria like Nodularia spumigena become more toxic when facing eutrophication conditions, producing hepatotoxin nodularin. This toxin attacks the liver, posing a risk to humans and livestock consuming contaminated water.
Researchers from Arizona State University have discovered a calcium-driven pump mechanism in endolithic cyanobacteria, which dissolves carbonate substrates. This finding has implications for coral reefs and mussel aquaculture, addressing a long-standing geochemical paradox.
A USGS study found that taste-and-odor compounds are commonly associated with cyanotoxin presence, highlighting the need for increased surveillance and public alert systems. Cyanotoxins can be poisonous to people, aquatic life, pets, and livestock, causing symptoms like skin rashes, stomach upset, seizures, or death.
Researchers at Arizona State University have improved cyanobacteria growth conditions for biofuel production, enabling high biomass yields and efficient CO2 utilization. The findings provide a vital foundation for optimizing photobioreactor technology.
Researchers at Arizona State University have successfully engineered photosynthetic cyanobacteria to secrete fatty acids, which can be converted into oil for use as a renewable biofuel. This breakthrough could significantly increase the energy yield of biofuels while minimizing environmental impact.
Researchers have discovered how cyanobacteria's rate of cell division is regulated by the same circadian clocks that control human sleep patterns. The study found that cells divide once per day at specific points in the 24-hour cycle, with implications for understanding cellular renewal and cancer.
A team of researchers from Arizona State University has developed a process that removes a key obstacle to producing lower-cost, renewable biofuels. The team has programmed a photosynthetic microbe to self-destruct, making the recovery of high-energy fats and their biofuel byproducts easier and potentially less costly.
ASU has been awarded two grants totaling over $10 million to support high-risk, high-reward advances in alternative energy research. The projects focus on developing ultra-high-energy metal-air batteries and using photosynthetic bacteria to produce automotive fuel from sunlight, water, and carbon dioxide.
Researchers find novel cyanobacterial lineage in lichens, with implications for ecosystem research and the study of symbiotic relationships. The discovery suggests that photobionts are selected based on their compatibility with mycobionts, leading to an increase in certain strains.
A Michigan State University researcher is studying the ancient evolutionary dynamic between marine bacteria and fast-mutating viruses. The project aims to understand how cyanobacteria evolve resistance to viruses and its implications for environmental and climate studies.
A new microbe, discovered in the open ocean, lacks genes needed for photosynthesis, yet provides natural fertilizer to the oceans by fixing nitrogen. Its unique metabolism may have implications for understanding carbon and nitrogen cycles in ocean ecosystems.
Researchers are discovering microbes that can efficiently produce inexpensive, environmentally friendly biofuels as alternatives to oil. These microorganisms can ferment biomass into ethanol and biodiesel, reducing our reliance on fossil fuels and mitigating climate change.
Researchers from the University of Texas at Austin have discovered a new source for biofuels in cyanobacteria, which can be grown on non-agricultural lands using salty water. The microbe produces cellulose and sugars that can be converted into ethanol, offering a potential alternative to traditional sources such as corn and sugarcane.
Cyanobacteria blooms are becoming more frequent and widespread due to global warming, posing a threat to human health and water ecosystems. The algae can cause digestive, neurological, and skin diseases in humans, and deplete oxygen in water reservoirs.
Researchers at Arizona State University aim to create an environmentally friendly energy source by harnessing the power of sunlight and bacteria to produce hydrogen. The project uses microbial photosynthesis to generate hydrogen, which can be converted into a clean fuel without releasing CO2 into the atmosphere.
Researchers found that biological clocks influence gene activity by controlling chromosome coiling in cyanobacteria, suggesting a universal theme for higher organisms. The study provides direct evidence of the regulatory mechanism, which could explain why some genes are active during the day and night.
Scientists have discovered a common coastal strain of cyanobacteria that thrives in choppy, polluted waters. The study found that this strain has evolved unique metal-processing biology missing in its open-ocean relative, enabling it to absorb and process essential metals.
Researchers have sequenced 99% of a cyanobacterium's genome, mapped its proteome, and analyzed global transcriptional activity. The study aims to understand the biological processes governing carbon fixation and hydrogen production in these organisms.
Researchers discovered that single-celled cyanobacterium Synechococcus fixes nitrogen gas at night, converting it into biologically useful compounds. This finding sheds light on how hot-spring microbial communities obtain essential nutrients, and highlights the complex metabolic strategies of these microorganisms.
A newly isolated compound, nostocarboline, has been shown to be a potent inhibitor of cholinesterase, a brain chemical linked to Alzheimer's disease progression. Its potency is comparable to an existing cholinesterase inhibitor, and it holds promise as a potential treatment for mild to moderate forms of the disease.
A University of Colorado study found that freeze-dried microbial mats in an Antarctic streambed revived quickly after water was reintroduced, demonstrating the persistence and adaptability of life in extreme environments. The research, led by Professor Diane McKnight, sheds light on the resilience of microorganisms in polar ecosystems.
Researchers found that marine viruses, known as cyanophages, require light to attach to and infect cyanobacteria, which are crucial for ocean health. This discovery could lead to more effective methods of controlling harmful algal blooms in the environment.
Researchers have uncovered a new hypothesis on the origins of cyanobacteria, which gave rise to chloroplasts in plant cells. The study suggests these bacteria first emerged in freshwater systems and gradually adapted to brackish and marine environments over time.
A team of researchers, led by Himadri Pakrasi, aims to model the networks that cyanobacteria, Arabidopsis, and Physcomitrella use to cope with radicals. This study has potential applications for human biology and could lead to new therapies.
Scientists have sequenced the genomes of four types of cyanobacteria, including Prochlorococcus and Synechococcus, which play a critical role in regulating atmospheric carbon dioxide. The completed genome sequences provide insights into how these single-celled organisms convert solar energy into living biomass.
Researchers propose that Oxygen-making microbes came later, around 100 million years after the emergence of Sulfur-loving bacteria. This revised evolutionary history may explain the lack of cyanobacteria fossils in ancient iron formations and resolve biochemical contradictions.
Scientists propose that a shift from carbon dioxide to methane in the greenhouse world may have triggered the emergence of complex life forms. Methane, which takes less energy to maintain than carbon dioxide, led to a drop in CO2 levels and the rise of oxygenic photosynthesis.
Researchers found a new protein supercomplex linking PSI and PSII in cyanobacteria, increasing light harvesting ability by 72%. This adaptation enables oxygen production even in low iron conditions, with significant global environmental implications. The discovery suggests an evolutionary link between the two photosynthetic complexes.