environments 2 5

Tag: "environments" at biology news

Gene therapy may protect normal tissues during radiation retreatment for lung cancer

...Dr Rob Larter at BAS examining one of the harshest environments on Earth - the Antarctic seafloor. Writing in the October issue of Trends in Ecology & Evolution the scientists provide new evidence that suggests that seafloor organisms were either erased by the advance of ice sheets across the Antarctic conti...

Seafloor creatures destroyed by ice action during ice ages

...Dr Rob Larter at BAS examining one of the harshest environments on Earth - the Antarctic seafloor. Writing in the October issue of Trends in Ecology & Evolution the scientists provide new evidence that suggests that seafloor organisms were either erased by the advance of ice sheets across the Antarctic conti...

CO2 sensing proves critical for fungal pathogens to adapt to life in air and human hosts

...hat allow pathogenic fungi to survive in different environments and invade the human body, and they provide new evidence for how CO2 sensing and metabolism utilize evolutionarily conserved enzymes to control the growth and sexual reproduction of pathogenic microbes. The two studies are reported by Joseph Heitma...

NC State researchers redesign life for Mars and beyond

... an organism that survives, and thrives, inextreme environments - into a plant, and then seeing whether the gene would function the wayit does in its original organism. "The bottom line is that we were able to produce the P. furiosus superoxide reductasegene in a model plant cell line and to show that the enzyme...

New book expands biological classifications to account for 'alien' life

...licon, perhaps in combination with carbon. Because environments are far colder on moons and planets farther from the sun, he said, it is less likely that life on the moons of Saturn and Jupiter, for instance, will use water as Earth life does. Instead, those organisms are more likely to use compounds such as ammo...

Freeze-dried mats of microbes awaken in Antarctic streambed

... Alpine Research. Such research on life in extreme environments is of high interest to astrobiologists, who consider Antarctica's McMurdo Dry Valleys an analogue for Mars because of its inhospitable climate and intermittent water flow. "This was something we did not anticipate," said McKnight, whose research gro...

Aquatic plants may hold key to advancing plant disease management

...of aquatic plant diseases in freshwater and marine environments will be addressed during the Aquatic Plant Pathology symposium at the APS Annual Meeting in Austin, TX, July 30 - August 3, 2005. The symposium will be held Sunday, July 31 from 1-5 p.m. at the Austin Convention Center. ...

Infectious disease expert warns of spread of Rocky Mountain spotted fever

... When the researchers examined the patients' home environments for possible clues to the source of infection, they found fever-infected ticks in all patients' yards. Ticks were found in the cracks of stucco walls on patients' homes, in crawl spaces under these homes and on furniture placed outside for children a...

Environmental lessons from tsunami as world's coastal population doubles

...from extreme coastal disasters by protecting local environments and building on local knowledge, according to a re... that builds on the existing resilience of coastal environments and communities when setting up disaster management policies to cope with cyclones, hurricanes, tsun...

Retina adapts to seek the unexpected, ignore the commonplace

...thy signals. For example, Meister says, in visual environments such as forests or fields of grass with many verti...natural environments. "Yet animals encounter many environments with visual statistics different from this hypothetical 'average' scene," Meister says. "We have fou...

Evolution of life on Earth may hold key to finding life in outer space

...until December. "Fantasy Worlds" explores extreme environments of Earth for a rare glimpse at microbes known as extremophiles that thrive in environments once thought too extreme to sustain life. Given the intense conditions under which these microbes ar...

Toxic flood lifts lid on common urban pollution problem

...e as it is unexpected: Toxins common in most urban environments that made their way en masse into the water as it stagnated atop the city. So says a University of Florida professor who has spent years studying the harmful contaminants that turn up in urban runoff, or rainwater that washes across streets and othe...

Ships bring alien jellyfish invaders to our shores

Marine environments around the world are being threatened by exotic species of the moon jellyfish being dispersed by international shipping, according to new research. Using genetic data and computer simulations of ocean currents and water temperatures, researchers fro...

New markers of climate change

...e two isotopes can be matched against the changing environments to which the plants have been exposed. If successful, these plants could be used as bioindicators of climate change throughout the tropics. Monica will be presenting her work at the Society for Experimental Biology Annual Main Meeting in Barcelona, ...

Deep sea buffet for bone-devouring worms

...ly true in the deep sea. Survival in some deep-sea environments requires capabilities that animals alone don't possess. So teaming up with a microbial partner is the secret of survival for many host animals living in such environments. Dr Goffredi says: "Measures of significant population sizes, and the discover...

Research suggests fitness of Florida panthers improved by limited breeding with Texas animals

...reas previously thought to be unsuitable," meaning environments "once supposed to be unable to support them." Purebred Florida panthers have been confined largely to protected areas north of interstate 75 and west of State Highway 29. "I think they were surviving in this area because they had the least trouble t...

One bacteria stops another on contact

...ia use this system to eliminate competition in the environments they grow in. "Another possibility is that the bacteria use the CDI system to shut themselves off inside a host, going into a dormant state where they may go undetected by the immune system," he said. Thousands of women in this country have chronic ...

Marine bacterium suspected to play role in global carbon and nitrogen cycles

...rchaea have primarily been associated with extreme environments like hot springs and deep-sea vents, but about a decade ago molecular studies proved their abundance in more common environs including the open ocean, freshwater and soil. Subsequent efforts to grow various samples of these organisms led to this cul...

Secrets of the deep may hold key to life on other planets

...es live around hydrothermal vents - incredibly hot environments in the deep sea - and are unique because they depend on bacteria living inside them for their own survival. These bacteria take their energy from hydrogen sulphide in the vent fluid. "They're among the fastest growing animals on the planet - a full ...

Discovering an ecosystem beneath a collapsed Antarctic ice shelf

...centive to launch studies to other remote undersea environments in the poles and in other glacial settings such as Lake Vostok, also in the Antarctic, to further explore the little-understood connection where ice sheets, the seafloor, and circulating water meet. The researchers indicate that the knowledge gained ...

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