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Tag: "calls" at biology news

A new plant-bacterial symbiotic mechanism promising for crop applications

... that involved other genes. This surprising result calls into question the universally recognized model of molecular communication that initiates the rhizobia-legume symbiosis. This common model requires the presence of several nod genes which allow synthesis of the Nod factor, a compound elaborated by the...

Small, self-controlled planes combine plant pathology and engineering

...opulations in the atmosphere—a type of research he calls “aerogenomics.” “One of the species we collected with our autonomous UAVs appears to be a bacterium known only to exist in a cavern in Arizona,” he said. “What was that bacterium doing 100 meters above Kentland Farm" In many of our other samples, ...

Adult stem cells from human cord umbilical cord blood successfully engineered to make insulin

...roliferation, posted online this week. Their paper calls it "the first demonstration that human umbilical cord blood-derived stem cells can be engineered" to synthesize insulin. "This discovery tells us that we have the potential to produce insulin from adult stem cells to help people with diabetes," sa...

Eavesdropping comes naturally to young song sparrows

...l Security Agency began eavesdropping on the phone calls of Americans, young song sparrows were listening to and learning the tunes sung by their neighbors. University of Washington researchers exploring how male song sparrows (Melospiza melodia) acquire their song repertoires have found the first evidenc...

Mule deer moms rescue other fawns

...at both species responded to the recorded distress calls of fawns, similar to the responses elicited when c... In field trials using speakers that broadcast the calls of fawns under threat, the mule deer came to the speaker and stayed there as long as the calls playe...

HIVMA opposes The Gambia's unproven AIDS remedy

...erbal remedy. The HIV Medicine Association (HIVMA) calls on President Yahya Jammeh to cease his unproven claims that the treatment "cures" AIDS. Earlier this year, President Jammeh began applying his treatment to a handful of patients who had been doing well on antiretroviral therapy but stopped taking t...

Protein enables discovery of quantum effect in photosynthesis

...hlorophyl (BChl) a protein, but Blankenship fondly calls it the taco shell protein because of its structure : its ribbon-like backbone wraps around three clusters of seven chlorophylls, just like a taco shell around ground beef. The structure also is referred to as trimeric because of the three clusters...

Scientists identify prion's infectious secret

...to misforming along with them, a process Lindquist calls a "conformational cascade." In many organisms, this conformational cascade creates long fibers called amyloids. (The brains of animals that have died from prion infections are literally packed with amyloid clumps.) In order to glean insights into...

Warts vaccine -- 1 of many in pipeline

...the trial could call 3240 5881 to learn more. All calls are handled in confidence....

Dinosaur hearing, listening to muscle noise, quieter cubicles

... the National Parks Overflights Act of 1987, which calls for the timely, substantial restoration of natural quiet to the park from aircraft noise. Dickson Hingson of the Sierra Club's National Parks and Monument Committee ( dhingson@infowest.com ) will discuss the current status of these efforts, as a dea...

From the deep -- Researchers find new species of sea anemone

...sea anemone isn't so unusual. But finding one that calls a dead whale home is what sets this new creature apart. Since the scientists who initially found these animals weren't sea anemone specialists, they sent the 10 specimens they collected to Meg Daly, an assistant professor of evolution, ecology and...

Improved predictions of warming-induced extinctions sought

...ioScience, an international team of 19 researchers calls for better forecasting of the effects of global warming on extinction rates. The researchers, led by Daniel B. Botkin, note that although current mathematical models indicate that many species could be at risk from global warming, surprisingly few sp...

In young mice, gregariousness seems to reside in the genes

...vis. "There is an association between high-pitched calls in mice and positive experience. The quality and quantity of the call are tightly associated with the nature of the interaction itself." As the mice neared sexual maturity, the genetic influence on social behavior ebbed and the animals became much...

Male owls pitch their hoots to advertise body weight to competitors

...ale owls respond more strongly to the high-pitched calls that simulate lighter individuals, confirming that...o pitch information advertising body weight in the calls of their competitors. The authors also found that the territory owners give slightly lower pitched h...

Paper challenges 1491 Amazonian population theories

...tudy only examines two districts." Bush himself calls the paper, co-authored with Claudia Listopad, William D. Gosling, and Christopher Williams of Florida Tech, Paulo E. de Oliveira of Universidade do Guarulhos in Brazil, Miles R. Silman and Carolyn Krisel of Wake Forest and Mauro B. de Toledo of Flori...

Study suggests some drug resistance to influenza B medications

...he news about resistance is not good and certainly calls into question some of the current assumptions about drug-resistant viruses, an effective response to this news can help contend with the new challenges of influenza.? (JAMA. 2007;297:1492-1494. Available pre-embargo to the media at www.jamamedia.or...

Glucose triggers brain cell death in rats after hypoglycemic coma

...linical science. For basic science, he says, "this calls for a reconsideration of our concepts about the causes of oxidative stress in other settings –?especially in ischemic stroke, where the blood supply to the brain is diminished and there’s a big burst of oxidative stress when the blood returns. That b...

Male reindeer inflate a large air sac in the neck region to emit their hoarse rutting calls

...he research paper further explain that the rutting calls appear to be understood by rival males as an indic...young communication the air sac individualizes the calls and contributes to individual recognition. ...

McBride shows DNA detective work with paper-eating bacteria that 'glide'

...he genome of C. hutchinsonii provides what McBride calls a "parts list" for the microbe, allowing scientists to explore how bacteria use these parts to build and run their key functions ?some of which have potential uses in bioenergy. The genome has revealed surprises, he says. "Microorganisms typicall...

Bisexual fruit flies show new role for neurochemical

...ross the synapse. Instead, it is what Featherstone calls ambient extracellular glutamate, which just floats around the nervous system and has generally been ignored because no one knew where it came from or what it was doing. For years, scientists failed to identify glutamate as a key neurotransmitter pr...

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