Tag: "nutrients" at biology news

Plant gene discovery could enhance plant growth, reduce fertilizer needs and phosphate pollution

...ants to assist the uptake of phosphorous and other nutrients from the soil is an important goal in plant biology with relevance to agriculture and ecology. Dr. Maria Harrison?s identification of the phosphorous uptake protein in the plasma membrane of the plant is an important step toward this goal. Now her re...

Good bacteria trigger proteins to protect the gut

...ogical activity," said Medzhitov. "They metabolize nutrients to enable us to absorb them more readily. They aid in the early development of the gastrointestinal system. And they produce factors that prevent colonization by pathogenic bacteria. Our work, however, has revealed a role that is quite different." Sp...

Rutgers cancer prevention expert calls for FDA action to reduce colon cancer and osteoporosis

...al Nutrition, Newmark and colleagues propose these nutrients be added to the current enrichment program for cereal-grain products. "The benefits would be a significant reduction in the incidences of osteoporosis and colon cancer over time and an overall improvement in health at a modest financial cost and with...

Researchers discuss revised Food Guide Pyramid and what it will mean for the food industry

... foods from all food groups to obtain the range of nutrients needed," said Dr. Hentges. "The proposed revised ...e development of Dietary Reference Intakes for all nutrients it proved necessary to revise and update the Food Guide Pyramid to reflect this new information....

Impact of Earth's rising atmospheric carbon dioxide found in world oceans

...asurements (such as temperature, salinity, oxygen, nutrients and chlorofluorocarbon tracers) in the Atlantic, Pacific, and Indian Oceans. These oceans have taken up about 118 billion metric tons of anthropogenic CO 2 between 1800 and 1994, about a third of their long-term potential. The researchers, includi...

When sun's too strong, plankton make clouds

... deeper layers. The deeper layers hold many of the nutrients that plankton need to live on. Like how oil separa...ore UV light. Under conditions where there are low nutrients in the water and levels of UV light are high, plankton create more DMS. DMS levels peak from June t...

Finding the hole in the defenses of cavity-creating microbes

...va, a healthful substance that bathes the teeth in nutrients and fights cavities, to reach and cleanse the teeth. "Within an hour after you eat, you can run your tongue over your teeth and feel a sort of film. That's plaque really, a community of bacteria making themselves comfortable for a long-term stay in...

Protein stops blood-vessel growth, holds promise as cancer therapy

...prouting of new blood vessels." Cancer 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 characteristic of cancer and the leading cause of cancer-related death. Th...

NASA data shows hurricanes help plants bloom in 'ocean deserts'

...high winds stir up the ocean waters and help bring nutrients and phytoplankton to the surface, where they get m...agues believe it was stimulated by the addition of nutrients brought up to the surface. Whenever the quantity of plants increases or decreases, it affects the a...

Trapping carbon in soil key for protecting global food security, dealing with climate change

...m erosion during normal growing seasons; and using nutrients such as manure, compost or biosolids to fertilize ...oil needs enough carbon in order to hold water and nutrients and to grow crops efficiently. "But completely removing crop residue for animal fodder and fuel is t...

Volcanic soils yield new clues about the emergence of powerful chiefdoms in Hawaii

...owth. To find out if large concentrations of these nutrients were present in the narrow agricultural system, Vi... the soils on those ancient islands had lost their nutrients through weathering and other factors thus precluding the development of large-scale sweet potato fa...

Fat cells could provide the key to a longer life

... They make things eggs, babies, and need a lot of nutrients for this. Males tend to move around a lot - to fin...d females and persuade them to mate, and need less nutrients to make things. But this is just speculation." The study was funded by the Wellcome Trust and the Bi...

Drug that cuts off tumor's blood supply extends lives of colorectal cancer patients

...his process provides the tumor with the oxygen and nutrients it needs to grow and spread. Researchers have theorized that by stopping or cutting off the new blood supply, they can starve and, hopefully, kill the cancer. Researchers had hoped that Avastin - a monoclonal antibody that targets the Vascular Endoth...

Could mice hold the secret to longer life?

...ion of life-span. Metabolism is the means by which nutrients are broken down to smaller building blocks and chemical energy, which are used to make new body materials and to do work. The researchers discovered that the most metabolically active 25% of the mice studied, far from having shorter life-spans, in fa...

Mysterious beach closures may be linked to contaminated groundwater, study finds

...water could be the direct source of bacteria or of nutrients that nourish bacteria already in the surf zone.'' Sewer irregularities A 2001 study commissioned by the Orange County Sanitation District revealed ''irregularities'' in the sewer lines below two Huntington Beach restrooms. Although repairs were mad...

Study examines future of species extinction, conservation

...le to a certain condition, such as the increase of nutrients in lake water, the species best suited for that condition are left behind. This ordered extinction, notes Ives, makes the community as a whole more resistant to that environmental pressure and, in a sense, protects it from future degradation. "One im...

Model shows long-held constant in ocean nutrient ratio may vary as ecological conditions change

...row and, ultimately, replenish the supply of these nutrients in the ocean. Since the 1930s, scientists have kno... increased competition and the other with abundant nutrients researchers determined the optimal strategies that phytoplankton use to allocate the cellular machi...

Parent-offspring conflict in the evolution of vertebrate reproductive mode

...nd in many species viviparity involves transfer of nutrients via a placenta. We propose and test the idea that the origins and evolution of viviparity and placentation have been driven by maternal-fetal conflict over resources. Such maternal-fetal conflict arises because a mother and her fetus are related gene...

Into the dead zone: Galveston researcher examines loss of marine life

... a climax in the weeks ahead. "We will look at the nutrients in the water in the dead zone area, look at the water color and examine the bacterial communities," she says. "We want to determine what specific biological activities are going on there - and their interactions with the chemical and physical environ...

Tiny beetle wreaks havoc on Texas ornamental tree nurseries

...llection of tiny vessels that transports water and nutrients to the plant cells. "It's really the ambrosia fungus that kills the tree, not the beetle," Ludwig said. No one knows why the insect made such an impact this year, but Ludwig said it's suspected that mild winters have played a big role. The adult b...

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