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Tag: "nutrients" at biology news

Proteins stop blood-vessel and tumor growth in mice

... and blood-vessel formation in mice." Tumors need nutrients and oxygen supplied by blood vessels in order to grow. They also use blood vessels to spread to other parts of the body. This process, known as metastasis, is the most lethal stage of cancer and the leading cause of cancer-related death. Fighting can...

New crop of technology reveals plant health

...te when plants need help, such as more water, more nutrients or more or less light. Essentially, the plants are... ePlantOS, it can control the deployment of water, nutrients or pesticides, as necessary. One of PLANTS' demonstrator went live at the Eden Project end March 2...

Biodiversity key to sustainable biofuel according to University of Minn. researcher's findings

... dependent on diversity and root mass. Roots store nutrients and buffer against climate variations. Prairie plants, which are perennials, have far more root mass than crops such as corn, which must be replanted annually. ...

UC San Diego biologists solve plant growth hormone enigma

...formations in the tissues that transport water and nutrients throughout the plant, differed depending on which combinations of genes were deleted. The researchers say that this finding was surprising because most people in the field thought that where auxin was made did not really matter. The widely held vi...

Iron critical to ocean productivity, carbon uptake

... ocean productivity. "Nitrogen and phosphorus are nutrients that come up from the ocean bottom to feed the upp...hnology now allows us to tell which combination of nutrients is stressing the phytoplankton." Behrenfeld said the presence of iron stress in the ocean links phy...

Technique speeds up detecting, treating wound bacteria

...etermine just what the bacteria like in the way of nutrients and environmental conditions. The earlier the lab staff has answers, the earlier the correct treatment can begin. Initial treatment is necessarily empiric. "When the patient is quite ill, clinicians necessarily use a broad spectrum (antibiotic), ...

DNA: Bacteria's survival ration

... already shown that DNA is an acceptable source of nutrients for bacteria. The team's latest study, presented ...he competition for food lessens, and the supply of nutrients increases. "The bacteria actually eat the DNA, and not only that, they can use the DNA as their sol...

Marine 'dead zone' off Oregon is spreading

...n waters. During normal years, cold water rich in nutrients but low in oxygen upwells from the deep ocean off Oregon, mixes with oxygen-rich water near the surface, causes some phytoplankton growth and provides the basis for a thriving fishery and healthy marine food chain. During dead zone periods, some of t...

DOE JGI sequences, releases genome of symbiotic tree fungus

...i, which excel at procuring necessary, but scarce, nutrients such as phosphate and nitrogen. When Laccaria bicolor partners with plant roots, a mycorrhizal root is created, resulting in a mutualistic relationship that significantly benefits both organisms. The fungus within the root is protected from competiti...

Teasing out tissue from blood

...ultipotent" stem cells by exposing them to certain nutrients and growth factors. Such stem cells can give rise to many but not all tissue types like "pluripotent" embryonic stem cells (ESCs). Different combinations of growth factors can then turn the stem cells into a range of cell types. Moreover, Pharmafron...

BGSU biologist trying to crack microscopic code

...outer membrane must also be porous enough to allow nutrients in, he continues. As an analogy, he cites a house with a yard and a chain-link fence that "keeps the dogs out of the roses but lets the butterflies through." A short distance separates the outer membrane and the rest of the organism. How the bacter...

FSU biologists uncover mechanisms that shape cells for better or worse

...ans, and intestinal cells are polarized to take up nutrients and move them into the bloodstream," he said. Poulton explained that in order to ensure cell polarity in the Drosophila oocyte, the cells surrounding it activate a classic signaling pathway known as the Epidermal Growth Factor Receptor (EGFR) in a ...

Ammonia-loving archaea win landslide majority

...ia with oxygen to form nitrates, which are used as nutrients by plants. "Ammonia oxidation is an important step in the nitrogen cycle that was believed for the last 100 years to be solely performed by bacteria," says Christa Schleper, full professor of Molecular biology of Archaea at University Bergen, Nor...

Tropical forest CO2 emissions tied to nutrient increases

Extra helpings of key nutrients given to tropical rain forest soils caused them to...we have demonstrated is that even small changes in nutrients could have a similarly profound impact on the release of CO2 from tropical forest soils." Tropical ...

Flick of whiskers helps tease out brain's 'shadow' signaling system

... to the neurons, which rely on astrocytes to bring nutrients and to clean up after them. While scientists have known that neurons fire electrically in spectacular fashion to send signals, it's only recently that the slower chemical signaling network of the more numerous astrocytes has become widely appreciated...

Genetic snooze button governs timing of spring flowers

...g, a process that can ruin the crop by redirecting nutrients from the valuable root to the production of seeds and flowers. And although Amasino and his group have demystified some of the molecular underpinning of the familiar process of flowering, the biochemist emphasizes that much of the fine biochemical ...

Invasive species alter habitat to their benefit

...aren't hindered by the litter, and the increase in nutrients may help them grow larger." The results suggest that invasive cattails set in motion a feedback loop that helps them gain a stronghold. "The invasive cattails change the ecosystem through litter accumulation, producing an environment in which nativ...

Metal homeostasis research in plants will lead to nutrient-rich food and higher yielding crops

...ansporters influence the distribution of important nutrients such as Iron in the seed. Such information should aid the development of nutrient-rich seed, beneficially affecting human nutrition and health. This research should also lead to agronomic benefits such as increased seedling vigor, higher crop yields...

Gene therapy injected into the brains' of mice with Huntington's disease

...is one of two closely related, naturally-occurring nutrients that strengthen and protect brain cells that would normally die in this disease. The other neural nutrient is called neurturin (NTN). GDNF and NTN also increase production of the chemical neurotransmitter dopamine, which sends signals in the brain t...

UCSD researchers develop 'smart petri dish'

... wider than a human hair, that promote the flow of nutrients and chemicals through the cell culture and filter out larger particles such as bacteria and viruses. This design effectively persuades the cells to behave collectively the way they do in a fully functioning liver. The scientists write in their paper...

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