Tag: "under" at biology news

Research identifies protein that signals flowering in squash plants

...ley, oats and peas. Day-neutral plants will flower under either long or short days. In addition to its fund... as florigen, is produced in the leaves of a plant under inducing conditions, and then is transported through the phloem to the floral meristems, where it ac...

Math that powers spam filters used to understand how brain learns to move our muscles

...and make memories. “How we learn to think operates under many of the same principles as how we learn to move,” Shadmehr says. ...

How sneaky HIV escapes cells

... sacs known as exosomes. By studying human T-cells under a microscope, Gould, Yi Fang, Ning Wu, and other members of his team discovered what’s needed to qualify proteins for exosomal travel. “Surprisingly, all that’s needed for a protein to get out of the cell in exosomes are the ability to clump toget...

Research team identifies new Alzheimer's gene

...e researchers hypothesize that GAB2 might function under normal conditions to compensate for the harmful effects of APOE4 and other genes in older people and that the GAB2 risk gene lacks this protective effect. The study, funded by Kronos Science Laboratory, an affiliate of Phoenix-based Kronos Optima...

Pesticides choke pathway for nature to produce nitrogen for crops

...ational Research Service Award postdoctoral fellow under Joe Thornton, a professor of biology who focuses on phylogenomics and nuclear receptor genes. Fox and colleagues began detailing their findings in the journal Nature (2001) and Environmental Health Perspectives (2004), testing more than 50 chemica...

Studies to find better ways to preserve human eggs, ovarian tissue under way

...o durable glass-like structures. Phase I trials under way at the Medical College of Georgia are comparin...eveloped a solution where we can warm up tissue in under five minutes and still get no ice formation,” says Dr. Song, adding that ice formation aside, it is ...

Breakthrough developments in rheumatoid arthritis reported

...sms, or SNPs, to identify players that have fallen under the radar of older methods. The group has discovered another signaling molecule that seems to increase a person’s risk for rheumatoid arthritis by 30 percent. (The paper reporting the gene is in press.) In collaborations with other scientists wo...

Now, self-healing materials can mimic human skin, healing again and again

...acts with catalyst particles. If the crack reopens under additional stress, the healing cycle is repeated. “Ultimately, the ability to achieve further healing events is controlled by the availability of active catalyst,” said Kathleen S. Toohey, a U. of I. graduate student and lead author of the paper. “...

Massive herds of animals found to still exist in Southern Sudan

...oSS). Funding for the project also came from USAID under the USAID/U.S. Department of Agriculture Sudan Agr...this precious wildlife resource, which has thrived under these difficult circumstances, disappear. Ironically, the silver lining to this violent time in Suda...

Study shows lizard moms dress their children for success

...progeny the patterns most likely to ensure success under the conditions they will encounter as adults. In ...ts had the most fit progeny," Lancaster said. "But under different environments, maybe the progeny that weren't tweaked would have the highest fitness. If th...

Nurtured chimps rake it in

...ns (‘semi-enculturated’); and another group raised under more austere captive conditions (laboratory chimpa...y, “We think our findings mean that the conditions under which chimpanzees are raised, housed, and maintained have long-term effects on their cognitive devel...

454 sequencing identifies HIV drug resistance at early stage

...level resistant HIV strains which can grow rapidly under drug selection pressure and lead to therapy failure. This retrospective study clearly shows that even resistance mutations present at the 1% level lead to premature failure of therapy” explained Michael Kozal, M.D. the senior author on the study. “I...

In nature, proteins sweep up nanoparticles

... bioremediation.” Moreau conducted the research under the guidance of Jill Banfield, a principal investigator in the Geochemistry Department of Berkeley Lab’s Earth Sciences Division, and a UC Berkeley professor in the Department of Earth and Planetary Sciences and in the Department of Environmental Sci...

Warning from Asian bees

...found and the search widened. Already operating under marginal circumstances, many of Australia’s beekeepers can only afford a momentary sigh of relief. Asian bees (Apis cerana) are capable of carrying two types of Varroa mite – destructor and jacobsoni; the latter would not threaten the health of lo...

Research finds that circadian rhythms dominate all life functions

...on of an organ or a specific tissue -- are chaotic under this state and don't function as a group. Lack of orchestration can be easily confused with the lack of oscillation. This makes the rhythm much harder to detect. "It's like a conductor walking away from an orchestra during a performance; each music...

The mouflons of the Kerguelen archipelago

... he participated in an ecological research program under the supervision of Jean-Louis Chapuis of the Muséum national d'histoire naturelle in Paris. He studied the ecology and behaviour of mammals (mouflons, sheep and reindeer) introduced into the Islands. Ten years later, Renaud Kaeuffer, a doctoral st...

Helping chlorine-eating bacteria clean up toxic waste

...er laboratory will test the D. ethenogenes strains under a variety of different conditions, such as exposin...odels of how the bacteria's proteins work together under each condition and whether the pathway for each condition is the same for PCE and TCE, and if not, w...

Study identifies 5 genetic themes key to keeping stem cells in a primitive, flexible state

... of Canadian scientists has identified 1,155 genes under the control of a gene called Oct4 considered to be the master regulator of the stem cell state. A comprehensive molecular definition of stem cells is emerging: according to this research, stem cells are cells that keep their DNA packaged in a flexibl...

Gene therapy study shows safety and statistically significant improvement in Parkinson's disease

...-escalating cohorts. All procedures were performed under local anesthesia and all 12 patients were discharged from the hospital within 48 hours of the procedure. At one year, all 12 patients as a group demonstrated a clinical improvement of 25% in the Unified Parkinson’s disease Rating Scale (UPDRS) compar...

How plague-causing bacteria disarm host defense

...nger that transmits extracellular signals ("we are under attack!") into the host cell, so that it can mount a defense. "The alarm signal sent by Gaq is intercepted by YpkA, which sets up a roadblock along several cellular pathways that Gq uses to deliver the alarm," said lead author Lorena Navarro, Ph...

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