Tag: "stems" at biology news

Gene predicts better outcome as cortex normalizes in teens with ADHD

...ychiatry Branch, who led the research. ADHD likely stems from interactions between several such genes and non-genetic factors. Shaw, Judith Rapoport M.D., and colleagues report on their magnetic resonance imaging (MRI) study in the August 2007 Archives of General Psychiatry. This study provides us with...

Increase in creeping vines signals major shift in southern US forests

...re talking about an increase of more than 500 vine stems in 27 acres of forest area that we studied, he sai...session researchers would count the number of vine stems in each plot, identify new and dead stems, and look at vine growth from previous surveys. Vine den...

Philadelphia ecologist receives top Mongolia honor

... Soviet Union. Gouldens relationship with Mongolia stems back to 1966 when he visited Lake Baikal, the worlds largest lake (in volume), as part of a cultural exchange program. But it was an appeal from a Buddhist lama in Buryatia, an autonomous Russian republic next to Mongolia, that prompted Goulden to re...

A new plant-bacterial symbiotic mechanism promising

...e exceptional, rare ability to form nodules on the stems of its host-plant. The plant thus acquires the possibility of fixing much higher quantities of nitrogen than those usually measured in leguminous plants which have nodules only on their roots. The researchers sequenced (3) the genes of two bacterial...

Researchers demonstrate way to control tree height

... to height growth and more to development of stout stems and plentiful seed. In orchards, semi-dwarf fruit trees produce more fruit that is easier to harvest. The improvements in cereal yields have been credited with preventing the starvation of millions. ...

Study helps preserve Arctic whale, Eskimo subsistence hunt

...pected level of genetic variation but speculate it stems from the whale's unusual age structure, as opposed to unique subpopulations. Bickham said he suspects the high commercial-whaling mortality rates of the 19th and early 20th centuries may be one reason for the unexpected variation. Whalers of this ...

A new plant-bacterial symbiotic mechanism promising for crop applications

...e exceptional, rare ability to form nodules on the stems of its host-plant. The plant thus acquires the possibility of fixing much higher quantities of nitrogen than those usually measured in leguminous plants which have nodules only on their roots. The researchers sequenced (3) the genes of two bacterial...

Spud origin controversy solved

...rt each theory, the Andean introduction hypothesis stems from the belief that the Canary Islands landraces are solely of Andean origin. Although almost all current European potatoes have Chilean traits, the Andean hypothesis supposed that these potatoes arose from crosses with Chilean potatoes as breeding ...

Study shows response to financial loss parallels brain's processing of pain

... negative value people associate with losing money stems from an evolutionarily old system involved in fear and pain. This could provide some biological justification for the popular concept of "financial pain." Their study was published in the May 2 issue of The Journal of Neuroscience . "This work ext...

Glucose triggers brain cell death in rats after hypoglycemic coma

...n the amount of glucose given. "We think that this stems from a known link between glucose and NADPH oxidase," Swanson says. "Glucose is a precursor for NADPH, which in turn is used by NADPH oxidase in generating oxidative stress." Swanson explains that the results have implications for both basic and c...

First impressions: Computer model behaves like humans on visual categorization task

...edings of the National Academy of Sciences (PNAS), stems from a collaboration between computational neuroscientists in Poggio's lab and Aude Oliva, a cognitive neuroscientist in the MIT Department of Brain and Cognitive Sciences. This new study supports a longheld hypothesis that rapid categorization hap...

Research project tackles 'regeneration' gap

...tion, the brain has only a small quantity of adult stems cells to fight disease or injuries. Similarly, the body has limited capacity to repair injured limbs or spinal cords. Regeneration researchers seek to strengthen the bodys inherent healing powers. "We are bringing together the best of the developme...

Case Western researcher, international team call for better global warming forecasting

...environment Sobels interest in the environment stems from his work with the U. S. Public Health Service in the 1960s when he worked on a project that followed a proposal by the Army Corps of Engineers to close off the Delaware River when tidal surges from hurricanes threatened the water systems of Dela...

RNA enzyme structure offers a glimpse into the origins of life

...tructure of the ribozyme. The ribozyme has three stems that radiate from a central hub. The active site where ligation occurs is located on one stem, and the structure shows that the molecule folds in such a way that parts of another stem are positioned over the ligation site, forming a pocket where the ...

New cell type identified in cancer development

...uspected these unusual cells might be precancerous stems cells and designed several tests and experiments to find out more about them. They selected three pCSC lines and injected them subcutaneously, intraperitoneally or intravenously into three groups of mice. The mice represented different levels of im...

Researchers learn what sparks plant growth

...sting plant growth to reach light or strengthening stems to support leaves, are central to plant survival. Brassinosteroid biosynthesis has become a critically important area of plant biology research with significant implications for commercial agriculture. "Its been a matter of some debate for a very l...

Lessons in wood formation from Arabidopsis

... mutant plants were not able to remain upright and stems were easily bent and broken. This defective phenotype could be almost completely reversed by introducing into the double mutant a genomic fragment containing either the fully functional NST1 or NST3 gene. This shows that these genes have an overlappi...

The secret of Dutch tapwater unveiled in new textbook

...n the textbook.The need for an English publication stems from the international interest in the unique Dutch approach and the desire to follow the Dutch example. ...

Largest-ever search for autism genes reveals new clues

...rain during early development. Since autism likely stems from faulty wiring, a genetic blueprint gone awry in this pivotal neurotransmitter system is a prime suspect. Some key genes associated with the glutamate system are located in chromosome regions previously associated with autism, note the researcher...

International study points to new breast cancer-susceptibility gene

...ther such genes to be discovered." The new study stems from research by Xia and Dana-Farber's David Livingston, MD, a senior author of the paper, into BRCA2's "binding partners" proteins that interact with the BRCA2 protein. They found that the PALB2 protein is an especially close partner of BRCA2, with...

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(Date:10/31/2014)... Geologists are letting the air out of a nagging mystery ... have long speculated as to why animal species didn,t flourish ... to prosper at the end of the Proterozoic period, about ... stretch before that, when most researchers think there also was ... so great then, after all. , In a study published ...
(Date:10/31/2014)... University of Adelaide-led project has developed a new test ... against the H5N1 strain of avian influenza virus or ... , This is a significant step in the fight ... is widespread in the poultry populations of South East ... concern because of its possible transmission to humans and ...
(Date:10/30/2014)... Mich. – When most animals begin life, cells immediately ... a vital organ. However, mammals, including humans, are special. ... different first choice – to become the protective placenta ... during this critical first step that research from Michigan ... in the current issue of PLOS Genetics ...
Breaking Biology News(10 mins):Lack of oxygen delayed the rise of animals on Earth 2New step towards eradication of H5N1 bird flu 2Identifying the source of stem cells 2
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