Articles tagged with Pollen
Comprehensive exploration of living organisms, biological systems, and life processes across all scales from molecules to ecosystems. Encompasses cutting-edge research in biology, genetics, molecular biology, ecology, biochemistry, microbiology, botany, zoology, evolutionary biology, genomics, and biotechnology. Investigates cellular mechanisms, organism development, genetic inheritance, biodiversity conservation, metabolic processes, protein synthesis, DNA sequencing, CRISPR gene editing, stem cell research, and the fundamental principles governing all forms of life on Earth.
Comprehensive medical research, clinical studies, and healthcare sciences focused on disease prevention, diagnosis, and treatment. Encompasses clinical medicine, public health, pharmacology, epidemiology, medical specialties, disease mechanisms, therapeutic interventions, healthcare innovation, precision medicine, telemedicine, medical devices, drug development, clinical trials, patient care, mental health, nutrition science, health policy, and the application of medical science to improve human health, wellbeing, and quality of life across diverse populations.
Comprehensive investigation of human society, behavior, relationships, and social structures through systematic research and analysis. Encompasses psychology, sociology, anthropology, economics, political science, linguistics, education, demography, communications, and social research methodologies. Examines human cognition, social interactions, cultural phenomena, economic systems, political institutions, language and communication, educational processes, population dynamics, and the complex social, cultural, economic, and political forces shaping human societies, communities, and civilizations throughout history and across the contemporary world.
Fundamental study of the non-living natural world, matter, energy, and physical phenomena governing the universe. Encompasses physics, chemistry, earth sciences, atmospheric sciences, oceanography, materials science, and the investigation of physical laws, chemical reactions, geological processes, climate systems, and planetary dynamics. Explores everything from subatomic particles and quantum mechanics to planetary systems and cosmic phenomena, including energy transformations, molecular interactions, elemental properties, weather patterns, tectonic activity, and the fundamental forces and principles underlying the physical nature of reality.
Practical application of scientific knowledge and engineering principles to solve real-world problems and develop innovative technologies. Encompasses all engineering disciplines, technology development, computer science, artificial intelligence, environmental sciences, agriculture, materials applications, energy systems, and industrial innovation. Bridges theoretical research with tangible solutions for infrastructure, manufacturing, computing, communications, transportation, construction, sustainable development, and emerging technologies that advance human capabilities, improve quality of life, and address societal challenges through scientific innovation and technological progress.
Study of the practice, culture, infrastructure, and social dimensions of science itself. Addresses how science is conducted, organized, communicated, and integrated into society. Encompasses research funding mechanisms, scientific publishing systems, peer review processes, academic ethics, science policy, research institutions, scientific collaboration networks, science education, career development, research programs, scientific methods, science communication, and the sociology of scientific discovery. Examines the human, institutional, and cultural aspects of scientific enterprise, knowledge production, and the translation of research into societal benefit.
Comprehensive study of the universe beyond Earth, encompassing celestial objects, cosmic phenomena, and space exploration. Includes astronomy, astrophysics, planetary science, cosmology, space physics, astrobiology, and space technology. Investigates stars, galaxies, planets, moons, asteroids, comets, black holes, nebulae, exoplanets, dark matter, dark energy, cosmic microwave background, stellar evolution, planetary formation, space weather, solar system dynamics, the search for extraterrestrial life, and humanity's efforts to explore, understand, and unlock the mysteries of the cosmos through observation, theory, and space missions.
Comprehensive examination of tools, techniques, methodologies, and approaches used across scientific disciplines to conduct research, collect data, and analyze results. Encompasses experimental procedures, analytical methods, measurement techniques, instrumentation, imaging technologies, spectroscopic methods, laboratory protocols, observational studies, statistical analysis, computational methods, data visualization, quality control, and methodological innovations. Addresses the practical techniques and theoretical frameworks enabling scientists to investigate phenomena, test hypotheses, gather evidence, ensure reproducibility, and generate reliable knowledge through systematic, rigorous investigation across all areas of scientific inquiry.
Study of abstract structures, patterns, quantities, relationships, and logical reasoning through pure and applied mathematical disciplines. Encompasses algebra, calculus, geometry, topology, number theory, analysis, discrete mathematics, mathematical logic, set theory, probability, statistics, and computational mathematics. Investigates mathematical structures, theorems, proofs, algorithms, functions, equations, and the rigorous logical frameworks underlying quantitative reasoning. Provides the foundational language and tools for all scientific fields, enabling precise description of natural phenomena, modeling of complex systems, and the development of technologies across physics, engineering, computer science, economics, and all quantitative sciences.
Researchers developed a new maize model that simulates kernel formation, increasing accuracy of crop yield predictions. By accounting for pollen movement and other factors, the modified CERES-Maize model provides more accurate estimates across various environmental conditions.
The Brazilian Atlantic forest has lost 95% of its original size, but researchers have found 'refugia' where the forest is still thriving. These regions may hold the secrets to regenerating the ecosystem.
Biologists have identified the first orchid fossil, dating back 76-84 million years, which suggests that showy blooms may have existed alongside dinosaurs. The discovery resolves a longstanding debate over orchid origins and provides direct evidence of pollination in the fossil record.
The study reveals that flowers' anthers play a crucial role in facilitating pollen collection by bees. The researchers found that the size, shape, placement, and timing of anthers can be controlled by genetic networks and non-coding sequences.
Researchers at Rutgers University have discovered a new approach to contain genes in genetically modified (GM) crops by implanting them into plastids, minimizing the risk of escape. This innovation has the potential to alleviate concerns about 'foreign genes' contaminating wild species and ecosystems.
New evidence from Mexico's Central Balsas valley links crop domestication in the New World to local environmental history. Agriculture originated during a warm, wet period following the last ice age, and its effects on the environment are still evident today.
A new method for predicting cross-pollination between GM and conventional crops has been developed by the University of Exeter. The study reveals huge variation in cross-pollination levels depending on wind direction and speed, highlighting the need to increase minimum field-to-field distances.
Washing laundry in hot water (140°F) kills all house dust mites, while washing in warm water only removes 6.5% of them. Rinsing with cold water after low-temperature wash is also effective.
Researchers have identified a key gene, PUB8, that regulates the expression of SRK and SCR genes, crucial for self-incompatibility in plants like Arabidopsis. This finding may enable the development of hybrid seeds and improve crop yields.
Ancient farmers in Mexico cultivated early forms of maize around 5,300 B.C., 1,200 years earlier than previously thought. This finding expands knowledge on the transition to agriculture in Mesoamerica and sheds light on the rise of complex societies.
Research suggests that nitric oxide and nitrite released by pollen grains trigger allergic responses in the nose. The study, funded by the Wellcome Trust, aims to investigate the role of these compounds in human cell inflammation during hayfever.
Researchers at University of Bonn aim to tap into the sediment archives of Lake Van, which store climate data from 800,000 years ago. The sediments contain detailed information on temperature and precipitation patterns, allowing scientists to reconstruct past climates.
Researchers studying bumblebee behavior have found that the bees' foraging patterns can predict successful seed production. The team has developed an unparalleled data set by testing various combinations of plant species on their reproductive patterns, revealing that adjacent flowers differ markedly in their mating patterns.
Zaditor offers up to 12 hours of continuous itch relief with one drop, a significant improvement over most OTC products that only provide 3-4 hours of short-term relief. The medication is safe for use in children as young as three and does not contain decongestants that can cause rebound redness.
A new study found that an investigational therapy reduced allergy symptoms in adults for at least a year after just six injections of the major ragweed allergen, Amb a 1, coupled to a unique DNA sequence. The therapy showed promise in reducing symptoms and improving quality-of-life scores compared to standard immunotherapy.
Researchers at Iowa State University are developing a male sterile corn variety that carries a transgene to produce biopharmaceuticals, which can be grown in states without risk of pollinating traditional crops. The new variety could help control pollen movement and ensure safe production of pharmaceuticals.
Research by Mark Graham found that pollen significantly enhances plankton growth in boreal lakes, supporting forage fish and potentially boosting sport fish populations. Climate change may impact this process, highlighting the importance of pollen in linking terrestrial and aquatic ecosystems.
Researchers found a positive correlation between tropical area expansion and diversity increase during global warming. Conversely, forest fragmentation during cooling periods leads to decreased diversity. The study suggests that changes in area drive speciation and extinction in the tropics.
Research reveals that plant species in highly diverse ecosystems face reduced fruit production due to inadequate pollination. This lack of pollination hinders the survival and reproduction of plants, posing a significant threat to their extinction.
A global study reveals that plants in highly diverse ecosystems, such as South American and Southeast Asian jungles, suffer lower pollination rates and reduced reproductive success. This could push certain plant species towards extinction.
A new study finds that high levels of pollen limitation in species-rich regions may lead to extinctions due to insufficient pollination. Plant species in these areas often compete intensely for pollinators, resulting in reduced fruit and seed production. This threatens the survival of not only plants but also animals dependent on them.
A global study of over 1,000 pollination experiments found that high plant diversity can lead to reduced pollination and reproductive success. This reduction in fruit and seed production may push vulnerable species towards extinction.
Scientists at Max Planck Institute and University of Cologne isolate mutant Arabidopsis thaliana with single sperm cell, allowing it to germinate and fertilize. The researchers found that a positive signal from the egg cell's fertilization triggers endosperm proliferation.
Researchers investigate Akt1's impact on cardiac function, finding it can enhance cardiac function after heart failure but also contribute to maladaptive effects. A new gene therapy approach successfully treats severe combined immunodeficiency (SCID) in mice, offering promising implications for its treatment.
Researchers at UTMB discovered that oxidative stress from pollen is as important as antigen exposure in triggering severe respiratory inflammation. Antioxidant substances may help forestall allergy or asthma attacks, and longer-lived antioxidants could be effective in treatment and prevention.
Research by Prado shows that Viagra affects plant pollen tube behavior, blocking re-orientation in response to NO. NO may serve as a safeguard mechanism to prevent dual fertilization in plants.
Researchers from Columbia University and NASA used sediment layers to uncover a 500-year drought from 800 A.D. to 1300 A.D., as well as the effects of the Little Ice Age and European settlers' agricultural practices on the area's climate. The study found increased erosion, saltier water, and changes in vegetation during these periods.
Scientists discovered that birch pollen extracts inhibit a protein that normally blocks allergic reactions, leading to increased sensitivity in allergy-prone individuals.
Researchers used quantum dots to visualize protein localization in plant cells for the first time, providing valuable understanding of pollen tube interaction. The study paves the way for using quantum dots in live imaging and improving plant breeding techniques.
Dr. Fraser Mitchell's study analyzes tree pollen to reconstruct primeval forests, concluding that grazing animals did not exert a significant impact on forest structure. This challenges current European forest conservation policy, which promotes closed canopy deciduous forests, and suggests that primeval forests may have been more open.
A recent study found that wind pollination works more efficiently in solid meadow plants than when they are spread apart. This could explain why Spartina covers only 60 acres of Willapa Bay despite being present for a century. Inefficient wind pollination may also speed the extinction of rare plants.
Researchers found that a new ointment, applied inside the nose, significantly reduced symptom scores in patients with allergic rhinitis. The treatment improved airflow by nearly 20 percent and reduced symptoms by about 60 percent compared to a placebo.
Researchers have identified a genetic component involved in the self-incompatibility response of plants. The discovery sheds light on how plants prevent self-pollination and could lead to more efficient methods for producing hybrid seeds, such as hand emasculation being replaced by transgenic approach.
Researchers at UC Riverside discover chemocyanin, a small protein found in the stigma of lily flowers, which effectively guides sperm-laden pollen tubes to the plant's ovules. The study sheds new light on the complex process of seed formation in flowering plants.
Researchers at Purdue University have identified the molecular mechanisms responsible for shutting down floral scent after pollination, which may help improve floral scent in unscented flowers. The study found that fertilization triggers a decline in scent production and that plant hormones play a role in regulating this process.
Plant fertility depends on understanding how pollen tubes navigate towards egg cells. Researchers identified a key molecular signaling system involving gamma-amino butyric acid (GABA) that guides pollen tube growth.
Researchers have identified gamma-amino butyric acid (GABA) as a key signaling molecule that triggers plant reproduction and guides the growth of pollen tubes. In contrast, mutants with deficient GABA degradation produce a massive increase in the chemical signal, overwhelming the pollen tubes and disrupting their guidance.
Scientists at Penn State University have identified a new gene essential for pollen production in flowering plants. The team used genetic techniques to discover the gene, which is necessary for the formation of cells required for pollen production.
Researchers at the CNRS and INRA Centre de Versailles in France have discovered a gene, SPIK, that increases pollen competitive ability by facilitating rapid pollen tube elongation. This discovery sheds light on how plants can improve their reproductive success.
A team of paleoecologists from Amsterdam used pollen grains to accurately recreate the local climate in Southern Mexico and Northern Guatemala around 1000 AD. The study suggests that the collapse of the well-organised Maya empire led to widespread destruction of wildlife and agricultural areas, resulting in a drier climate.
Eating at least two apples per week and higher selenium intake may reduce adult asthma incidence. Farm childhood experiences also lower risk of allergic reactions to cat dander and Timothy grass, reducing nasal congestion symptoms.
Researchers found that monarch larvae are more likely to be exposed to toxic corn pollen when pollen is shed during peak larval activity. In Ontario, 62% of larvae were exposed to toxic pollen, while in Iowa, the figure was 15%. The study suggests that agricultural habitats like cornfields are crucial for monarchs.
Researchers found that black swallowtail caterpillars fed on Bt corn pollen experienced significant growth rate reduction, varying up to three times smaller in distance from the crop. The discovery suggests sublethal effects of Bt corn pollen on non-target species and emphasizes the need for careful event selection by producers.
Researchers have discovered how plants' self-incompatibility works on a molecular level, revealing highly specific lock-and-key interactions between pollen and stigma. This breakthrough could enable genetic engineers to short-circuit reproduction and increase genetic variability in crops like tomatoes and rice.
Researchers have identified two distinct clusters of genes in the Arabidopsis genome that code for pollen coat proteins. These proteins enable the dry pollen coat to interact with stigma cells during pollination. The discovery provides insights into how plants recognize pollen and could lead to new techniques for crossing plants, preve...
Researchers found that genetically modified Bt corn pollen had no adverse effect on black swallowtail caterpillars in field tests. The study's results contradict previous findings for monarch caterpillars, suggesting a safer genetic modification option for non-target species.
Cornell University researchers have discovered a gene, called SCR, that determines a plant's ability to accept or reject its own pollen. This gene is expressed in the anther and produces pollen with a specific label that distinguishes it from self-pollen.
Research by Cornell University reveals that genetically engineered corn, designed to protect against pests, can kill monarch butterfly larvae when they come into contact with its pollen. This has significant implications for the long-term survival of the monarch species, which is already facing habitat disruption and other threats.
New research suggests that the Southeastern US experienced a warm and wet climate during the Middle Holocene Period, contrary to previous theories. Fossil pollen data and paleochannels indicate intensified flooding and increased wetland plants, while a lack of windblown sand supports this finding.
Researchers at the University of Chicago Medical Center have identified a mutation in a small flowering plant that disrupts male-female communication, leading to pollen tubes wandering aimlessly. This defect is similar to self-sterility observed in many plant species, which helps maintain genetic diversity.