Tag: "salty" at biology news

Common lineage suggested for viruses that infect hosts from all three domains of life

...environments like geysers, and alkaline, acidic or salty waters). It is difficult to study viral evolution, Burnett says, because viruses live symbiotically with their hosts and adopt host-related traits. Instead of being inherited from a viral ancestor, these host-related traits may be picked up from the...

Arid Australian interior linked to landscape burning by ancient humans

...at that is occasionally covered by a thin layer of salty water. The earliest human colonizers are believed to have arrived in Australia by sea from Indonesia about 50,000 years ago, using fire as a tool to hunt, clear paths, signal each other and promote the growth of certain plants, he said. Fossil rema...

Highlights of the February Journal of the American Dietetic Association

...igh-fat grain-based dishes like pizza and high-fat salty snacks. Higher-fiber fruits and vegetables were consumed in quantities too small to contribute to total average fiber intake. "Although our data indicates that children with higher dietary fiber consumption have better diets, it is not clear at whic...

One year after groundbreaking, desert research center takes shape on the Israeli-Jordanian border

...e to a number of microbes that thrive in extremely salty conditions or in hot springs where the temperature...ously unknown microbial genera inhabiting the very salty substance that extrudes from the leaves of the tamarisk plant. DNA analysis may lead to the discover...

Marshes tell story of medieval drought, little ice age, and European settlers near NYC

..., and evidence of this was found by an increase in salty marsh plants, like saltmarsh cordgrass. The changing salinity of the marshes and estuaries could present future water quality issues in the event of a drought. For example, heading north up the Hudson River, the city of Poughkeepsie draws its municip...

Road salt affects mitigation wetlands

...in the runoff wetland reach peaks that are half as salty as sea water," Silver told attendees at the North ... There was no decrease in midges from the slightly salty wetland. In general, freshwater organisms are not very salt tolerant. The Penn State researcher has...

Ancient diets of Australian birds point to big ecosystem changes

...at only occasionally is covered by a thin layer of salty water. The earliest human colonizers in Australia are believed to have arrived by sea from Indonesia about 50,000 years ago, using fire as a tool to hunt, clear paths, signal each other and promote the growth of certain plants, Miller said. More th...

Bitter or sweet? The same taste bud can tell the difference

...ay override CCK during a sweet sensation. Sour and salty the two other dominant tastes seem to work in totally different ways than sweet and bitter, Herness said. The researchers would eventually like to figure how these work, too, but for now their next step is to apply bitter and sweet stimuli to taste...

Toxins drove evolution of human taste sense, global study reveals

... detect five primary flavors: bitter, sweet, sour, salty and umami -- a savory or meaty taste. Taste receptors are protein switches that trigger signals to the brain's taste-processing centers in response to particular foods or other chemicals. In humans, 25 genes are responsible for encoding receptors tha...

New genetic link to high blood pressure found

... of sodium, or salt, coming into the body. After a salty meal, for example, higher levels of dopamine can be detected in the urine after being produced and used by the kidneys to regulate the removal of salt from the body. Problems or perturbations anywhere in the system that produces dopamine or receives...

New and sharper X-rays of cell's ribosome could lead to better antibiotics

... ribosome apart. Some of the magnesium ions form a salty liquid at the interface between the large and small subunits of the ribosome, perhaps lubricating the machine. These and other hypotheses need further exploration, he said. "All the interactions we see have been seen before at lower resolution, but i...

UCR environmental scientists propose chemical solution to cleaning California's Salton Sea

... Sea, evaporation will result in the sea being too salty for fish, resulting also in the loss of fish-eating birds frequenting an area that is home also to several endangered bird species and visited by millions of waterfowl every year. Massive fish kills are a common occurrence at the Salton Sea, however...

A salty tale: New bacterial genome sequenced from ancient salterns

... reveal the genome of one bacterium at home in the salty Spanish ponds. The bacterium is Salinibacter ruber, a bright red, rod-shaped organism. Several years ago, scientists first isolated S. ruber from saltern crystallizer ponds in Alicante and Mallorca, Spain. Although extreme-loving microbes called arch...

Salty taste preference linked to birth weight

...rs. The results suggest that a person's liking for salty taste may be related to how much they weighed when... researchers report that individual differences in salty taste acceptance by two-month old infants are inversely related to birth weight: lighter birth weigh...

ASU geologists suggest Mars features are result of meteorite strikes, not of evaporated lakes

...ought to be formed by the evaporation of an acidic salty sea. The prevailing thought is that when this Martian sea existed it may have supported life forms and thus would be a prime site to explore for fossils. However, ASU geologists L. Paul Knauth and Donald Burt, who along with Kenneth Wohletz of Los A...

Thousands of barges could save Europe from deep freeze

...than the others: making thicker sea ice by pumping salty ocean water on top of ice sheets. They envisioned...the ice to melt it, forming a vast amount of cold, salty water that sinks and adds to the down-welling current to re-strengthen it. The estimated cost is abo...

Thin tough skin, slow-growing gills protect larval Antarctic fish

...h as blood in many notothenioids are about half as salty as seawater. While seawater reaches its freezing point at -1.91 degrees Celsius, fish fluids will freeze at about -1 degree Celsius. The water where these species dwell rarely rises above the freezing point and is regularly filled with ice crystals. ...

For some young fish, early gene expression is a clear harbinger of fated lifestyle

... that prepare them for adulthood in open fresh and salty waters. In their innovative work, which is based on studying the gene expression profiles of hundreds of genes at a time in different fish populations, the researchers studied gene expression in two species--strains of the brown trout, Salmo trutta, ...

Researchers discover which organs in Antarctic fish produce antifreeze

...rnal fluids in notothenioids are about one-half as salty as seawater. While seawater reaches its freezing point at 1.91 degrees Celsius, fish fluids freeze at about 1 degree Celsius. These species dwell in water that rarely rises above the freezing point and is regularly filled with ice crystals. From the...

Studying water quality in Colorado River Delta's Cienega de Santa Clara

...hich is primarily agricultural return flow, is too salty to count toward the United States' treaty obligation to provide Colorado River water to Mexico. The water has been directed into the cienega since the 1970s. Now about 100,000 acre-feet (32.6 billion gallons) of brackish water flows into the cienega ...

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