How do you study a group of organisms with over 300,000 species, dispersed across all seven continents, and with up to 50 times as much DNA content as the human genome?
This is the question posed to biologists studying the evolutionary history of flowering plants, called angiosperms, whose rapid diversification was so convoluted a problem that Darwin referred to it as the 'abominable mystery.'
Even in the absence of bark beetle outbreaks and wildfire, trees in Colorado subalpine forests are dying at increasing rates from warmer and drier summer conditions, found recent University of Colorado Boulder research.
The study, published in the May print issue of the Journal of Ecology, also found that this trend is increasing. In fact, tree mortality in subalpine Colorado forests not affected by fire or bark beetle outbreaks in the last decade has more than tripled since the 1980s.
SAN FRANCISCO, CA--July 22, 2021--To speed up a chemical reaction, a chemist might place the reactants over a Bunsen burner. Adding heat increases the degree of random movements and collisions of particles, accelerating the reaction.
In cell biology, one important "reaction" is the transformation of stem cells into all the other cells in the body, a process known as differentiation. Gladstone Institutes researchers have now discovered a molecular mechanism that acts like a Bunsen burner to "turn up the heat" and accelerate differentiation.
From the thrill of hearing an ice cream truck approaching to the spikes of pleasure while sipping a fine wine, the neurological messenger known as dopamine has been popularly described as the brain's "feel good" chemical related to reward and pleasure.
Research in mice, published today in Science Immunology by researchers at the Babraham Institute, UK and VIB-KU Leuven, Belgium, provides two solutions with potential to overcome a key clinical limitation of immune cell therapies. Regulatory T cells have potential in treating autoimmunity and inflammatory diseases yet they can switch from a protective to damaging function. By identifying the unstable regulatory T cells, and understanding how they can be purged from a cell population, the authors highlight a path forward for regulatory T cell transfer therapy.
Chemotherapy has helped make acute lymphoblastic leukemia (ALL) one of the most survivable childhood cancers. Now, researchers working in the U.S., Germany and China have shown how chemotherapy drugs called thiopurines can lead to mutations that set patients up for relapse. The work appears today in the journal Nature Cancer.
The research provides the first direct genomic and experimental evidence in pediatric cancer that drug-resistant mutations can be induced by chemotherapy and are not always present at diagnosis.
Rivers are lifelines for many countries. They create valuable ecosystems, provide drinking water for people and raw water for agriculture and industry. In the Global South in particular, there is strong competition for access to freshwater resources. The increasing use of hydropower has recently intensified this competition further.
Most children with a mental health disorder are not receiving services to address their needs--according to a new study from researchers at Simon Fraser University's Children's Health Policy Centre. Their research was published this week in the journal Evidence-Based Mental Health.
Researchers found that of the one in eight children (12.7 per cent) who experience a mental disorder, less than half (44.2 per cent) receive any services for these conditions.
The human body is essentially made up of trillions of living cells. It ages as its cells age, which happens when those cells eventually stop replicating and dividing. Scientists have long known that genes influence how cells age and how long humans live, but how that works exactly remains unclear. Findings from a new study led by researchers at Washington State University have solved a small piece of that puzzle, bringing scientists one step closer to solving the mystery of aging.
Almost all crop plants form associations with a particular type of fungi - called arbuscular mycorrhiza fungi - in the soil, which greatly expand their root surface area. This mutually beneficial interaction boosts the plant's ability to take up nutrients that are vital for growth.
The more nutrients plants obtain naturally, the less artificial fertilisers are needed. Understanding this natural process, as the first step towards potentially enhancing it, is an ongoing research challenge. Progress is likely to pay huge dividends for agricultural productivity.
About six gigatons -- roughly 12 times the mass of all living humans -- of carbon appears to be emitted over land every year, according to data from the Chinese Global Carbon Dioxide Monitoring Scientific Experimental Satellite (TanSat).
Using data on how carbon mixes with dry air collected from May 2017 to April 2018, researchers developed the first global carbon flux dataset and map. They published their results in Advances in Atmospheric Sciences.
Reston, VA--A new radiotracer that detects iron in cancer cells has proven effective, opening the door for the advancement of iron-targeted therapies for cancer patients. The radiotracer, 18F-TRX, can be used to measure iron concentration in tumors, which can help predict whether a not the cancer will respond to treatment. This research was published in the July issue of the Journal of Nuclear Medicine.
Many species within Kenya's Tana River Basin will be unable to survive if global temperatures continue to rise as they are on track to do - according to new research from the University of East Anglia.
A new study published in the journal PLOS ONE today outlines how remaining within the goals of the Paris Agreement would save many species.
The research also identifies places that could be restored to better protect biodiversity and contribute towards global ecosystem restoration targets.
For young soccer players, participating in repetitive technical training activities involving heading during practice may result in more total head impacts but playing in scrimmages or actual soccer games may result in greater magnitude head impacts. That's according to a small, preliminary study released today that will be presented at the American Academy of Neurology's Sports Concussion Conference, July 30-31, 2021.
Glenview, Ill. - Published monthly, the journal CHEST® features peer-reviewed, cutting-edge original research in chest medicine: Pulmonary, critical care, sleep medicine and related disciplines. Journal topics include asthma, chest infections, COPD, critical care, diffuse lung disease, education and clinical practice, pulmonology and cardiology, sleep, and thoracic oncology.