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Tag: "nutrients" at biology news

Growth in the sea comes down to a struggle for iron

...ome ocean waters that seemed to hold all the basic nutrients for life. Speculation that iron provided part of t... but these other areas have a persistent excess of nutrients because phytoplankton growth is reduced." Many scientists from around the world are now studying ir...

Poor prenatal nutrition permanently damages function of insulin-producing cells in the pancreas

... line is that if you don't have delivery of enough nutrients from the mother to the baby, the baby's pancreatic cells will be programmed abnormally," said principal investigator Mary-Elizabeth Patti, M.D., Assistant Investigator in Joslin's Research Section on Cellular and Molecular Physiology and Assistant Pr...

Poplar trees redirect resources in response to simulated attack

...ed in medical imaging to track the distribution of nutrients in poplar trees in response to a simulated insect ...lants can respond 'passively' by redirecting their nutrients away from the site of attack and placing them into storage for later regrowth," Ferrieri said. Supp...

Weill Cornell Research Reveals Secrets Of Trafficking Within Cells

...ss called endocytosis to keep the flow of cellular nutrients and information healthy and strong. It's an incredibly important life process, and now researchers at Weill Medical College of Cornell University in New York City have used an exciting new technology to better understand how one key player -- a prot...

Researchers discover molecule that causes secondary stroke

...he brain carries off wastes and exchanges them for nutrients at what's called the blood-brain barrier," Dr. Clark says. "After a hemorrhagic stroke, however, toxins given off by the brain bleed contribute to the development of specific molecules that later causes the constricting vasospasm." A research team le...

Highly adaptable genome in gut bacterium key to intestinal health

... such as dietary fiber, and supplies its host with nutrients while obtaining food for itself and other gut bacterial species. The complete genome sequence of B. theta was generated two years ago in the same laboratory. The researchers inoculated germ-free mice, who have no intestinal bacteria, with B. theta. ...

Introduced foxes transformed vegetation on Aleutian Islands from lush grasslands to tundra

...pings. On islands without foxes, seabirds transfer nutrients from the ocean to the land by feeding on marine fi...islands with and without foxes and speculated that nutrients might play a role. "He had these interesting ideas about foxes and birds and nutrient chains, and I...

Scientists discover unique microbe in California's largest lake

...leniche. Wood thinks that the high availability of nutrients in thewaters of the Salton Sea is what allowed the microbe to survive withoutits hosts in the saline lake.At the University of Oregon since 1990, Wood is a member of the UO'sCenter for Ecology and Evolutionary Biology. She has played a key rolein cha...

Implanted Devices Detect High-Risk Heart Failure Patients

...ity of the heart muscles to pump enough oxygen and nutrients in the blood to the body's tissues. Also known as congestive heart failure, its many causes include infections of the heart, coronary artery disease, high blood pressure, previous heart attacks and valve problems. An estimated 4.7 million Americans s...

LUCA technologies confirms real-time methane generation

... microbes can be stimulated by the introduction of nutrients or suppressed by heat sterilization or the introduction of oxygen, Luca has shown that radio-labeled CO2 (carbon dioxide) introduced to these substrate samples is converted to radio-labeled methane. This demonstrates that the methane formation is the...

Dead zone area in Gulf could be increasing, researchers say

... stage of the rivers, which bring large amounts of nutrients ?often in the form of fertilizer ?into the Gulf of Mexico. The Mississippi is the largest river in the United States, draining 40 percent of the land area of the country. It also accounts for almost 90 percent of the freshwater runoff into the Gulf ...

A frog's life is food for thought

...the green-striped burrowing frog is able to absorb nutrients 40 percent more effectively after 3 months without food, than frogs that had eaten regularly. "They can take massive meals equivalent to 50 percent of their body mass and maximise their digestive capability from the outset," Ms Cramp said. Little i...

Researchers identify protein crucial for survival of Lyme-disease bacterium

...f the study. "When the tick is not feeding, and no nutrients are coming in, the bacteria are sort of in a quies...lication is believed to come from the proteins and nutrients made available as the tick breaks down whole blood. "For some reason, bacteria lacking the BptA pro...

Nanoparticles offer new hope for detection and treatment

...ll tumors must recruit new blood vessels to obtain nutrients as they grow. Nevertheless, melanoma has unique traits that make it especially interesting as a target for nanoparticle therapy. Melanoma has a horizontal phase, when it spreads across the skin surface, and a vertical phase, when it goes deep into t...

Nanoparticle Breast Cancer Drug Approved by FDA

...ion, albumin is a protein that normally transports nutrients to cells and has been shown to accumulate in rapidly growing tumors. Therefore, Abraxane's increased effectiveness may also be due to preferential delivery of albumin-bound paclitaxel to cancer cells. Abraxane was developed by American Bioscience an...

Anammox bacteria produce nitrogen gas in oceans' snackbar

...hirty to fifty percent of the global conversion of nutrients to nitrogen gas occurs in these areas. In 'The Pro...ed in fixing the released nitrogen gas to form new nutrients that can be fed into the nutrient cycle again. In the article in PNAS, researchers from the Max Pla...

Are rice and wheat behind China's population boom?

...ow to intensify yields through the introduction of nutrients in the water and knowledge of water management practices. "By successfully manipulating rice production to the extent that these ancient people did, in combination with millet and wheat, helps explain the foundation of China's huge population today."...

Oceans more vulnerable to agricultural runoff than previously thought, study finds

... the world's oceans is controlled by the supply of nutrients to the surface water," wrote the authors, who are ...iven upwellings regularly bring nitrogen and other nutrients from the seafloor to the surface, stimulating the rapid reproduction and growth of microscopic algae...

Man-made wetland's effectiveness similar to natural marsh

...zers and in water pollution. High levels of these nutrients can cause algae to flourish, often to the detrimen...d phosphorus by 59 percent. It also retained these nutrients during periods of high precipitation, such as during storms and torrential downpours, which saturate...

Evidence of 600-million-year old fungi-algae symbiosis discovered in marine fossils

... Scotland fossils, the coccoidal cells provide the nutrients and the fungal filaments provide protection against dehydration. But in the marine environment, dehydration is not an issue and the 600-million-year-old rocks also contain many fossils of coccoidal cells that are not surrounded by filaments. "So it i...

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