Tag: "cues" at biology news

Pollutant causes delayed flowering in plants

...c oxide may "integrate" both external and internal cues into the decision to flower. Further studies, Pei said, will concentrate on understanding the nitric-oxide-controlled regulatory machinery in the flowering decision. Also, he said, the researchers will seek the receptor that nitric oxide plugs into i...

Brown ecologist garners major National Science Foundation grant

... a team of researchers examining how environmental cues in different climates affect genes in a single spe...s may even shed light on how complex environmental cues affect animals, including humans, who share many of their genes with Arabidopsis....

NSF announces six 'FIBR' awards to tackle some of biology's most challenging questions

...ect will examine how a plant evaluates the various cues of seasonal change so that it blooms when it has t...ironments," examining how plants weigh the various cues of seasonal change to make timing choices that are right for their climate -- Brown University (lead...

Images of 'tail' of protein needed for cell multiplication suggest anticancer drug targets

...ble to respond quickly to the changing demands and cues of their internal and external environments," Roussel said. "Often, the best way to respond rapidly is for the cell to modify a particular protein that already exists, rather than take the time to make a new one. Once modified, the existing protein b...

Analysis of biological clock may lead to greater understanding of human disease

...he fruit fly is a regulatory system that takes its cues from the sun. When the sun rises it affects the light-sensitive neurons of the brain of the fruit fly, setting off reactions of proteins at a certain rate depending on the amount of light. The reactions set the clock. There are key proteins and two k...

Review article makes case for a new source of cells in the body

...howing the way. "Nerves could be following certain cues left behind by VENT cells," Dr. Sohal says. "That is what we think. We have to experimentally test that." They also think that VENT cells may work like the Federal Reserve System works for banks: as a centralized source that supplies stem cells to al...

Brain's reward circuitry revealed in procrastinating primates

..., because they could no longer learn to use visual cues to predict how their work was going to get them a ...raced the monkeys' ability to associate the visual cues with the reward to the rhinal cortex, which is rich in dopamine. There was also reason to suspect th...

Study links high carbohydrate diet to increased breast cancer risk

...se in the body's blood sugar levels, which in turn cues the production of insulin and triggers a biological process that ultimately can influence carcinogenesis by causing cells to proliferate. Insulin and an insulin-like growth factor also may contribute to higher circulating levels of biologically a...

Genes may be central to cocaine addiction

...known to rise or fall in response to environmental cues and distress "not only does Homer provide an important window to understand cocaine-induced neuroplasticity and addiction, but also to study the molecular basis of the important link between environmental stress and cocaine addiction," they wrote....

Study explains spatial orientation differences between sexes

...e dark were told to focus on external or internal cues to help them orient the laser. He found that although instructions to pay attention to internal cues helped women to point the laser significantly closer to their straight-ahead, there were still signi...

News tips from the Journal of Neuroscience

...of an environment, but motivational and behavioral cues as well....

Environment influences learning: U of T study

...vation, and it becomes apparent that environmental cues can also trigger the memory of odour as a cue for starvation," said Law. "This is something people intuitively said was important. This is an important bridge between psychology and neurobiology. Affecting an environment affects your ability to l...

Briggs takes to the molecular level Darwin's findings on plants sensing the direction of light

... decoder of the blue photons on which the seedling cues to determine the direction of light. The molecule, known as phototropin, is now being intensively studied because of its unique properties by chemists and biophysicists as well as plant biologists. Professor Briggs began experimenting on how plants...

Hormone helps fish to mate, may affect human hearing

...male inner ear where the enhancement of the males' cues begins. As Forlano notes: "This was especially important since estrogen receptors are also present in the human inner ear but no one knows why they might be there. Our study now suggests a possible function." The research, he notes, is of particular...

A fly's taste experience is much like our own

...ystem to examine how the brain translates chemical cues in the periphery into taste perception and behavior," the authors concluded in their Cell paper. In the past few years, Scott and her colleagues have been working their way through the 68 genes in the fruitfly, Drosophila melanogaster, that code for ...

Newly grown kidneys can sustain life in rats

...into a kidney--we just have to give them the right cues and a little assistance at various points." For the study, Hammerman and coauthor Sharon Rogers, research instructor in medicine, gave renal primordia transplants to 5- and 6-week-old rats. Prior to insertion, scientists soaked the transplant tissue ...

Alzheimer's may leave some forms of memory intact

... systems optimally by providing the right kinds of cues or task instructions, we may be able to improve their function." In an article published in the June 10, 2004, issue of the journal Neuron, Buckner and Cindy Lustig, also at Washington University, compared implicit memory capabilities in yo...

Nature's ambush: pregnancy more likely from single unprotected intercourse than believed

...an's sexual attractiveness, via subtle behavioural cues from the woman or possibly due to the production of pheromones at this time both factors have been suggested in previous studies; Intercourse accelerating ovulation experiments on rodents have suggested this, and a sub-analysis of the new study su...

Muscle-derived cells and gene therapy may cure for post-prostatectomy erectile dysfunction

...h level of plasticity in response to environmental cues and are able to differentiate into different types of tissue. In this study, the University of Pittsburgh researchers injected MDC into the penis of rats with injury to the cavernous nerve. MDC-injected models showed an increase in intracavernous pre...

UCSD bioengineers develop first genome-scale computational model of gene regulation

...epresenting how the cell responds to environmental cues and expresses genes involved in cellular metabolism. He scoured the scientific literature to reconstruct an E. coli model incorporating all known data about regulatory network components, their functions and their actions. The UCSD model now includ...

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