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Tag: "dormant" at biology news

Ozone recovering, but unlikely to stabilize at pre-1980 levels, says study

... with dwarfism, manipulating hormone levels during dormant seasons may allow growers to control the height of grasses, trees or other plants, thereby eliminating the need to constantly manicure gardens. Based on earlier studies, the Salk researchers had developed a model that explained what happens inside ...

Salk scientists untangle steroid hormone signaling in plants

... with dwarfism, manipulating hormone levels during dormant seasons may allow growers to control the height of grasses, trees or other plants, thereby eliminating the need to constantly manicure gardens. Based on earlier studies, the Salk researchers had developed a model that explained what happens inside ...

Important gene controlling tree growth and development found

...ious trees also shed their leaves. The tree is now dormant and is as such much more resistant to drought and frost than if it had been actively growing. It has been known for a long time that the trees sense that fall is coming by measuring the length of the day. When the days get shorter the trees "know" t...

Scientists discover that ancient genes dictate flowering, fall bud set

...ill respond to local conditions in order to become dormant before the risk of frost damage. Because the short daylengths occurring in fall induce bud set, the scientists wondered if FT and CO also controlled this process. When they grew trees originating from different latitudes in Europe in a growth chamber...

Where have all the butterflies gone?

...butterflies in the high country. Snow protects the dormant insects from cold and drying. But the snow came late in the season, meaning that many of the overwintering insects may have been killed off early. We will not know about the fate of those butterflies until July, Shapiro said. ...

A new view on Lyme disease: Rodents hold the key to annual risk

...then molt into nymphs and enter a nearly year-long dormant stage. After another round of feeding, nymphs fall off and molt into adults, which prefer the blood of larger mammals. Larvae and nymphs can acquire and transmit infection, but people are most likely to contract Lyme disease from nymphs. A person's r...

Dopamine drug leads to new neurons and recovery of function in rat model of Parkinson's

...unction ?prompting stem cells that normally remain dormant in the adult brain to develop into neurons. While most researchers previously believed the adult brain could not develop new neurons, recent studies have shown that the brain contains stem cells and that new neurons can develop in some regions. Stu...

Ammonia-loving archaea win landslide majority

...that crenarchaeota are in fact active and not just dormant residents in the soil. Crenarchaeotal gene counts also do not change with soil depth, while bacterial gene counts drop significantly as one goes deeper. "It might mean that they can oxidize ammonia at least with less oxygen and probably also...

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

... has a long latency period. TB bacteria can remain dormant in vivo for 30-50 years and then re-activate to cause disease. Presently the state of the dormant bacterium is not understood. Timmins and Brinker are discussing further experiments to validate the ...

New potential drug target in tuberculosis

...ecules that help M. tuberculosis to persist in its dormant state and could become drug targets. ...

Discovery may speed forest biotechnology

... controls which cause trees to stop growing and go dormant in the fall, as well as the mechanism that causes ...vival. Temperate trees have to stop growing and go dormant in the winter or they literally freeze to death. "From an evolutionary perspective, it's easy to un...

Possible brain hormone may unlock mystery of hibernation

...one in the brain may unlock the mystery behind the dormant state, researchers reported in the April 7, 2006 issue of Cell. Hibernation allows animals from bears to rodents to survive unscathed--in a state of suspended animation--under the harshest of winter conditions. If the findings in chipmunks are confi...

Cloned stem cells prove identical to fertilized stem cells

...for embryonic development, genes that are normally dormant in tissue-specific cells. In other words, the egg needs to erase all tissue-specific memories from the skin cell and revert it into a genomic blank slate. But this entire process is almost never perfect, and nearly all cells in a cloned blastocyst ...

Amazon rainforest greens up in the dry season

...ep water in the dry season and therefore either go dormant or die. Figuring out the metabolism of the Amazon rainforest, the largest old-growth rainforest on the planet, is crucial for understanding how rainforests and other tropical biomes function and how deforestation affects biodiversity and sustainable...

Wisconsin scientists discover a master key to microbes' pathogenic lifestyles

... it can be fatal. What's more, the microbe can lay dormant in an infected host for years. "All of these orga...property of latency," says Klein. "They can remain dormant until immune defenses are lowered. It's a significant medical problem in endemic regions." The disc...

Ancient DNA helps UF researchers unearth potential hemophilia therapy

... form of the hereditary bleeding disorder. Using a dormant strand of DNA that has quietly existed in fish for millions of years, the researchers replaced the faulty gene responsible for the disease in neonatal mice, according to findings published online this month in the journal Molecular Therapy. "The deg...

Researchers discover why melanoma is so malignant

...rph into cancer cells, they immediately reawaken a dormant cellular process that lets them travel swiftly throughout the body. Central to this reawakened process is a gene called Slug (named after the bizarre embryo shape that its mutated form can cause in fruit flies). Slug is active in the neural crest...

Discovery that bacterium is phosphate gourmet key clue to what makes it most social of bacteria

...ctive decision with other M. xanthus whether to go dormant or not, and it even has methods of policing the behaviour of individual bacteria that to try to "cheat" in the collective activity of the group. Now Dr David Whitworth from the Biological Sciences Department of the University of Warwick has also disc...

Experimental shingles vaccine proves effective in nationwide study

...ear the spinal cord, where the virus persists in a dormant state. As immunity weakens with advancing age, the virus can reactivate, multiply in and damage sensory nerve cells to cause pain. It then migrates to the skin, causing the blistering rash of shingles. Generally, shingles first manifests as pain, it...

Freeze-dried mats of microbes awaken in Antarctic streambed

...wn that a carpet of freeze-dried microbes that lay dormant for two decades sprang to life one day after water was diverted into it, said a University of Colorado at Boulder researcher. The results showed the resilience of life in the harsh polar environment, where temperatures are below freezing for most o...

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