Tag: "tolerance" at biology news
Keeping the cold out
...s. Cold-response genes encode proteins that induce tolerance
to freezing, alter water absorption and initiate a host of other processes to help the plant survive. Although this network of cold-responsive genes has been characterized in some depth, the specific factors that regulate their activity have, until n...
Dried cells, tissues could solve biological materials storage, transport problems
...physiological, and molecular basis for desiccation tolerance
in cyanobacteria received university research seed money and earned a $950,000 grant from DARPA in 1998 that allowed them to launch VIGEN. Faculty members from many disciplines, from biology to computer science, use VIGEN's expertise in molecular/gen...
Watching clonal deletion in action
... distribution, for which this mechanism of central tolerance
cannot be used. However, over the last several years, it has become clear that proteins whose physiological role is elsewhere are nevertheless expressed in the thymus. Pugliese and coworkers show that thymic DCs express and present several major pa...
Deep Green spawns Deep Gene and Deep Time to continue work toward a complete tree of life for the green plants
...neer new traits from disease resistance to drought tolerance
in crop plants. With Deep Gene, funded through a ...shler said. "The interesting story is, dessication tolerance
re-evolved at least eight times within flowering plants, and again when the seed evolved. It appears...
Biosecurity net closes on marine invasions
... potential for species to survive the journey, and tolerance
to local port conditions. "Effectively, we are creating the webbing which is the scientific basis for authorities to throw a net around the country," says Dr Hayes. "In this project we have worked to translate the well-developed principles of ...
LSU professor to speak at AAAS conference on evolution of green plants
...ch University will focus on the evolution of plant tolerance
to desiccation, or drying out; Claude dePamphilis of Penn State University will address the Floral Genome Project, an offshoot of Deep Green that will look at the genetic perspectives on plant reproduction; and Michael Sanderson of the University of ...
Searching for a genetic needle in a genome haystack
...exposure will determine the development of alcohol tolerance
and dependence." In sum, genes interact with each other, genes may be 'triggered' only by certain environments (such as a disordered family), and genes and the environment influence each other. "The key to the future," said Crabbe, "is in under...
Scientist searches Yellowstone Park for carbon dioxide-eating microbe
...st have a hearty appetite for carbon dioxide and a tolerance
for scalding temperatures. This is roughly the job description Keith Cooksey, professor of microbiology at Montana State University-Bozeman, carries with him as searches the hot springs of Yellowstone National Park this winter. Cooksey's on a miss...
Smoking, heavy drinking and poor nutrition tend to cluster
...understood. "Chronic use of one drug may increase tolerance
to the other, or, conversely, nicotine may cause a stimulating effect that is depressed by ethanol," said Betts. "Or, some individuals may be genetically predisposed to heavy alcohol or tobacco use or to addictive behaviors in general." While the co...
Natural selection for lactose tolerance
...e lactose intolerant, and the frequency of lactose tolerance
varies between populations. Dr. Dallas Swallow and colleagues have examined the lactase gene in several human populations to learn more about its evolutionary history. They were able to determine the forces that shaped the lactase gene during two ev...
Voyage of the space veggies
...f the water plants can process, but increase their tolerance
to urea, for example, and they could thrive on the colonists' urine. The researchers are also looking to give plants new attributes to make them grow more efficiently. Distant colonies might be so far from the Sun that plants could never hope to gat...
ASTA calls for global standards of tolerance for adventitious presence biotech material in traditional seed
WASHINGTON, DC-Global standards of tolerance
for the adventitious (unintentional) presence of b...rcentage of a seed lot can be tested. Hence, zero tolerance
of adventitious biotech material, which may only be verified by testing 100 percent of a seed lot, i...
Global warming: lessons taught by snails and crabs
...ecies over the edge of what he calls their thermal tolerance
range. ``When thermal stress pushes body temperatu...Occidental College) decided to investigate thermal tolerance
limits in two groups of common Pacific invertebrates - porcelain crabs (genus Petrolisthes) and snai...
Worldwide transfer of microorganism facilitated by ballast water
...th such options because of their small size, their tolerance
to high temperatures and their ability to form resting stages. "Our research," he adds, "has clearly demonstrated that a potential problem exists and that we must concentrate on clarifying the impact and developing effective strategies to address thi...
Searching for the secrets of drug-free transplants
...Network, to develop tests predictive of transplant tolerance
PITTSBURGH, Nov. 1 -- Researchers at the Unive...might provide important clues to understanding how tolerance
impacts autoimmune diseases as well as allergy and asthma," said Adriana Zeevi, Ph.D., professor of ...
Taming wild wheat
... thrives by its exceptional disease resistance and tolerance
to harsh climate. Now Nevo and colleagues present a map of the wild emmer wheat genome, locating hundreds of unique DNA sequences on 14 chromosomes. Using this map to assess the result of crossing wild emmer with domesticated durum, the researchers...
Lung function may predict long life or early death
...mpaired pulmonary function could lead to decreased tolerance
against these toxins. Researchers also have speculated that decreased pulmonary function could underlie an increase in oxidative stress from free radicals, and we know that oxidative stress plays a role in the development of many diseases." Schnemann...
Measuring alcohol levels in breath, blood and now the brain
... which alcohol's effects can lead to intoxication, tolerance
and dependence. Scientists have found a new means...ohol tolerance. This is important because alcohol tolerance
is thought to predispose people to develop alcohol problems or become alcoholics. Future studies in...
UCSF finding could lead to long-sought alternative to morphine
... have limitations -- over time, people can develop tolerance
to the drug and/or become dependent on it, and the drug can cause severe constipation. Low to moderate doses of kappa-opioids, by contrast, have minimal addictive effects. Tolerance is only a minimal problem, and the drugs do not cause constipation...
Spiders get better web sites by rising early
...iently operate a single web and catch prey. Thus, tolerance
rules -- to a point. The researchers learned that large spiders compete with each other nonbelligerently for big spaces in the colony. In some insect species, the social hierarchy is fixed: Bee colonies, for example, have queens, workers and soldie...
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