Articles tagged with Protists
Researchers discovered salicylic acid plays a central role in protecting potato roots from Spongospora subterranea, a soilborne pathogen causing powdery scab. The study used a cutting-edge 'hairy root' system to rapidly test root-pathogen interactions, providing vital insights for developing resistant potato varieties.
Researchers establish culture of persistent flagellated protist from seawater, challenging current understanding that Endomyxa lack flagella. The discovery offers insights into evolutionary history and biological diversity of Endomyxa.
A recent study published in MDPI reveals that plants, fungi, bacteria, protists, and even some viruses employ venom-like mechanisms to solve critical problems. The research expands our understanding of venom beyond animal organisms, highlighting its broader evolutionary significance.
Researchers discovered symbiotic bacteria accompanying single-celled protists in the ocean's upper layer. The bacteria, including close relatives of pathogenic species like Coxiella and Rickettsia, may aid or harm their protist hosts, depending on context.
Researchers found peculiar mitochondria-like symbionts in freshwater lakes, groundwater, and wastewater worldwide, revealing surprising metabolic capacities. They can respire oxygen in addition to nitrogen, impacting the nitrogen cycle and potentially producing greenhouse gases.
A new study led by Arizona State University researcher Michael Lynch explores the substantial energy demands required to maintain and evolve multicellular life. Multicellular organisms require a tenfold increase in energy compared to protists, highlighting how respiration and metabolic processes are crucial for advanced life forms.
Researchers Manu Prakash and Eliott Flaum have discovered a new geometric mechanism in the single-cell organism Lacrymaria olor, enabling it to produce complex morphodynamics through curved-crease origami. The cell's cytoskeletal structure encodes this behavior, which is driven by a singularity that acts as a controller.
Researchers found that weaker ocean currents during the Younger Dryas period led to a decline in nutrient availability, resulting in decreased biological productivity in the North Atlantic. This study supports predictions about the impact of climate change on ocean circulation and life.
A new study reveals that climate change alters the hidden microbial food web in peatlands, affecting carbon storage and potential releases. Rising temperatures dry out peatlands, causing protists to behave unexpectedly, leading to changes in feeding habits and CO2 emissions.
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.
Researchers successfully cultured and analyzed two strains of Meteora sporadica, a small, unicellular eukaryote with a complex cytoskeleton featuring lateral arms supported by microtubules. The study reveals that Meteora sporadica is closely related to Hemimastigophora, a group of deep-branching eukaryotes with no arms or MTOCs.
A new study found that multiple members of the oxymonad lineage have lost their mitochondria, a crucial energy-producing organelle, approximately 100 million years ago. This discovery suggests that it's possible for eukaryotic organisms to thrive without mitochondria, paving the way for further research on their evolution and adaptations.
Researchers successfully cultured Rhabdamoeba marina from Japanese seawater, revealing its genetic sequence and clarifying its phylogenetic position. The study suggests reclassification into Chlorarachnea due to its close relationship with chlorarachnid algae.
A new DNA sequencing test revealed a novel species with an unusual genetic code, where TAA and TAG specify different amino acids. This finding breaks some long-held rules about gene translation, highlighting the complexity and diversity of life on Earth.
Researchers investigate protists in Lassen Volcanic National Park's hot and acidic geothermal lake to gain insight into their evolution and genome biology. They aim to understand how these organisms adapted to survive in extreme environments, which could expand the understanding of life's potential habitats.
Two studies by UPV/EHU researchers analyze recent and past oceanographic information off the Basque coast based on microfauna present in sediments. The research found that planktonic foraminifera assemblages are good indicators of ocean currents and water masses reaching the Basque continental shelf today.
A new parasitic euglenid species has been discovered within four animal species collected from a Japanese rice field. The flagellate displayed active metaboly without flagella inside the host body, but extended its flagella upon leaving the host to swim.
This study reconstructs Sessilida's phylogenetic tree using infraciliature and silverline system, establishing two new families. It challenges traditional morphology-based classification and provides insights into the origin and evolution of this group.
Horodyskia, a fossil with uniform size and spacing, is among the oldest multicellular macroorganisms. Its fossils suggest coenocytism and simple clonal coloniality, challenging previous interpretations.
Researchers found that bacteria's cooperative behavior helps in the short term but fails to protect them from predators. However, individual defense through filament formation proves successful and stabilizes bacterial population densities.
Researchers at Okayama University discovered genes and proteins responsible for the rapid contraction of axopodia in Heliozoa, a group of eukaryotes. The study identified key players in microtubule disruption, including katanin p60, kinesin, and calcium signaling proteins.
A team of researchers at the University of Nebraska-Lincoln has discovered that certain microorganisms, such as Halteria, can eat high numbers of chloroviruses, which are known to infect green algae. This finding suggests that virovory, a virus-only diet, can support physiological growth and even population growth in an organism.
Researchers have developed a robot capable of sorting, manipulating, and identifying microscopic marine fossils. Forabot uses robotics and artificial intelligence to automate the tedious process of evaluating foram shells and fossils.
Researchers found that ocean bacteria absorbing carbon dioxide from the air need more energy and resources when infected with viruses and facing predator attacks. This complex interaction can lead to increased carbon sequestration, a key factor in mitigating climate change.
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.
Scientists have identified a single-celled marine microbe that can photosynthesize, hunt, and eat prey, making it a secret weapon in the battle against climate change. This microbe can sequester carbon by releasing a heavy exopolymer that sinks to the ocean floor.
A freely available protist culture collection supports a deeper understanding of the plant microbiome, with key findings indicating that beneficial microorganisms feed on bacteria and fungi.
Researchers at Duke University used mini ecosystems to test the effects of warming on bacteria-eating protists. They found that simple measurements of species traits could predict their response to temperature, shedding light on how climate change will alter microbial communities and influence the pace of global warming.
A team of researchers has discovered a unique organism that lacks essential genes for copying and distributing its DNA. The free-living protist Carpediemonas membranifera is unable to produce kinetochore proteins, which separate chromosomes during cell division.
A recent study published in Microbiome Journal found that soil protists respond to plant signals, shifting community compositions and altering nutrient cycling. This groundbreaking research highlights the importance of including protists in terrestrial ecological studies.
Salps, small gelatinous organisms, are competing with protists for food in the ocean, rather than krill. This shift in understanding changes the ecosystem's carbon sequestration and food availability.
A recent study has shown that the deep sea is home to a vast array of unique and highly specific organisms, including protists, foraminifera, and ciliates. The diversity of these organisms was found to be highly specific to individual deep-sea basins, with little overlap between them and coastal regions.
A new study published in Nature Ecology and Evolution found consistent biogeographic patterns among marine animals, protists, and bacteria along the South African coastline. The research highlights the importance of considering a full range of organisms when measuring environmental change.
A new cost-effective technique, PNA clamps, has been developed to study non-bacterial plant microbiomes. This method allows researchers to detect thousands of sequences from rare microorganisms that were previously undetectable.
Researchers found viral sequences associated with choanozoans and picozoans, which were not linked to bacterial DNA, suggesting these protists eat viruses. The removal of viruses from the water could potentially reduce the number of viruses available to infect other organisms.
Researchers from OIST Graduate University explored how ocean currents impact plankton diversity, finding that currents create barriers that limit dispersal and force coexistence of species. The study used mathematical models and metagenomics to uncover the mystery behind high plankton diversity in oceans.
A team of international scientists has developed over 200 new genetic techniques for using marine microbes, overcoming a bottleneck in microbial oceanography. The tools enable researchers to study the cellular instructions that underpin microbial life and potentially harness beneficial applications.
Scientists have developed new methods to analyze individual proteins in marine protists, enabling studies on how these tiny organisms respond to environmental changes. The research sheds light on seasonal fluctuations and climate change impacts, providing insights into global cycles driven by phytoplankton.
Researchers have made significant progress in gene editing tools for ocean microbes, enabling functional studies of thousands of new genes. This breakthrough has the potential to improve our understanding of life's origins, biotechnology, medicine, and pharmacology.
Researchers discovered that most soil protists consume smaller organisms, while others thrive in tropical soils and are affected by annual precipitation. The study provides new insights into the ecological roles of these single-celled organisms in ecosystems worldwide.
Researchers confirm what Herbert Spencer Jennings described over 100 years ago: single-celled organisms like S. roeseli can make decisions that allow them to 'change their mind.' The findings suggest a hierarchy of avoidance behaviors determined by previous experience, with protists exhibiting complex problem-solving behaviors in respo...
A recent study published in Scientific Reports reveals a vast diversity of ocean microbes called protists, which form complex relationships with other members of the microbial food web. The research team analyzed over 900 single cell genomes, documenting genetic code that had never been identified before.
Tiny soil predators called protists 'eavesdrop' on bacteria's communication using scent, helping them choose the best prey. The discovery could lead to practical applications in biological pest control and agricultural research.
A new study finds early fossil sponges exhibiting tetraradial symmetry, a four-fold arrangement of spicules, in well-preserved fossils from the Cambrian period. This symmetry was previously unknown in living sponges and suggests a more complex ancestry than previously thought.
Researchers discovered two new symbionts, Cthulhu macrofasciculumque and Cthylla microfasciculumque, living in termite guts that aid wood digestion. These tiny protists were named after Lovecraft's monsters due to their octopus-like movements and appearance.
A new classification of eukaryotic life forms clarifies the current state of protist diversity, recognizing two new super groups: Amorphea and SAR. These groups reveal ancient relationships between protists, animals, and plants, highlighting a vast unknown diversity in soil and deep sea environments.
A new study provides experimental evidence supporting Darwin's phylogenetic limiting similarity hypothesis, where closely related species are more prone to extinction. The research found that competitive exclusion occurred more frequently and rapidly between closely related microorganism species.
Scientists discovered giant deep-sea single-celled organisms leaving complex tracks on the ocean floor near the Bahamas. The finding questions the fossil record and suggests that single-celled protists may have been the precursors to bilateral symmetry in animals.