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Tag: "extreme" at biology news

DOE JGI sequences, releases genome of symbiotic tree fungus

...se to environmental stressors, such as drought and extreme temperature, and other biological factors, providing a new dimension to climate change research and a step further toward mechanistic modeling of ecosystem responses," Rubin said. ...

Sandia work launched on space shuttle shows live cells influence growth of nanostructures

...um. To study their use as cell-based sensors for extreme environments, samples of the yeast- and bacteria-c...d to determine their longevity when exposed to the extreme stresses of the radiation and vacuum of outer space. Of the NASA mission, Brinker says, "Ordinaril...

DOE JGI finishes 100th microbial genome

Microbes, thriving in even the world's most extreme environments, are capable of performing myriad biological functions, learned over the billions of years they have inhabited the planet. Those lessons, and how they can be captured to render clean renewable sources of energy and to repair damaged env...

Researchers develop flood-tolerant California rice

...olerance," a property that enables rice to survive extreme flood conditions, the researchers show how potentially any variety of rice could be made to survive short-term floods that completely submerge the rice plant ?a result benefiting rice farmers worldwide. The researchers are the first to identify a...

Use of stone hammers sheds light on geographic patterns of chimpanzee tool use

...y known only in a distant chimpanzee population in extreme western Africa and was thought to be restricted by geographical boundaries that prevented cultural spread of the technique from animal to animal. The findings, which involve the most endangered and least-understood subspecies of chimpanzee, are repor...

Magnetism and mimicry of nature hold hope for better medicine, environmental safety

...ed through exerting magnetic force, and moved with extreme precision across the tips of nanowires, which are only about 200 atoms in diameter and less than a hundredth of the width of a human hair in length. "We knew we had the perfect surface on which to analyze drops of blood and other biological fluids ...

Flick of whiskers helps tease out brain's 'shadow' signaling system

... before that astrocytes can become activated under extreme conditions in the laboratory, Nedergaard said this is the first time that such activity has been seen in an organism during everyday circumstances. "This opens the door to whether these cells are part of everyday higher cognitive functioning that de...

Natural pine bark extract relieves muscle cramp and pain in athletes and diabetics

...mon problem for people of all ages, ranging to the extreme fit and healthy to people who suffer from health problems. Previously, magnesium was hailed as the natural approach for relieving muscle cramps, however studies continue to show magnesium to be inefficient for reducing muscle cramps. "Pycnogenol imp...

Arctic expedition will investigate alien-like glacier

...unusual feature on the earth's surface and it's an extreme ecosystem that could be a good model for how life first begins in a harsh environment." The spring has also attracted the attention of the Canadian Space Agency and NASA, which are helping to fund the expedition, because it likely provides the best...

Large dinosaurs were extremely hot in their day, UF study finds

...Park,' they certainly were very active given their extreme size." Tyrannosaurus rex, one of the more familiar dinosaurs considered by the researchers, probably had a cruising temperature of about 33 degrees Celsius, which is just over 91 degrees Fahrenheit, according to lead researcher James Gillooly, Ph.D...

Researcher gives hard thoughts on soft inheritance

... a direction that is beneficial. This is the more extreme variation of soft inheritance that raises the hack...at yet. "To get to the issue of the more extreme variations of soft inheritance, it has to be determined whether the environment can induce an epigen...

Hopkins scientists show hallucinogen in mushrooms creates universal 'mystical' experience

...o harm to study participants, though some admitted extreme anxiety or other unpleasant effects in the hours following the psilocybin capsule. The drug has not been observed to be addictive or physically toxic in animal studies or human populations. "In this regard," says Griffiths, a psychopharmacologist, "i...

Gut microbes' partnership helps body extract energy from food, store it as fat

... became famous because of their ability to live in extreme environments where nothing else could survive, such as hot springs. Scientists first isolated archaea from the human intestine in 1982, and have recently recognized M. smithii as the most common archaeon in human intestines. In addition to its prev...

How did cactuses evolve?

...ynthetic system allows cacti to survive periods of extreme drought while maintaining well-hydrated tissues." Recent molecular phylogenetic work has confirmed that Pereskia, a genus that consists of 17 species of leafy shrubs and trees, is where the earliest cactus lineages began. Using field studies and en...

Female guppies risk their lives to avoid too much male attention

...t females of many species face, and some may go to extreme lengths to avoid it. In a new paper from the June issue of the American Naturalist, Darren Croft (University of Wales) and a research team from the University of Leeds suggest that female guppies, a popular aquarium fish, may risk their lives to av...

Corals switch skeleton material as seawater changes

... modified seawaters is further evidence of corals' extreme sensitivity to environmental change," Ries said. "This is particularly significant given recently observed and predicted future changes in the temperature and acidity of our oceans ¬¬-- via global warming and rising atmospheric CO2 , respectively -...

Higher levels of obesity associated with greater health risks

...ned: obesity 1 (30-34.9); obesity 2 (35-39.9); and extreme obesity (40 and greater). (A 5'4" person would hav... black women reported measurements consistent with extreme obesity. Estimates of obesity-related risks in women have generally been based on weight data that ...

NAU researchers chirping over discovery of new cricket genus

...scovering new taxa," Cobb said. "Because caves are extreme environments, cave arthropods are very specialized...esting and odd evolutionary forms that reflect the extreme environments found in caves." Cave-dwelling invertebrates are important for conservation, because ...

Zebra finch males prefer females with exaggerated maternal traits

...emales with a spectrum of beak colors ranging from extreme orange to extreme red. Males in both groups preferred females with beaks that were more extremely colored than their m...

Salk scientists untangle steroid hormone signaling in plants

...ntral to plants' growth. Without it, plants remain extreme dwarfs. If we are going to understand how plants grow, we need to understand the response pathway to this hormone," says Chory. "This study clarifies what's going on downstream in the nucleus when brassinolide signals a plant cell to grow." Brassino...

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