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Tag: "yellow" at biology news

Plants, too, have ways to manage freeloaders

...For the main experiment, Simms concentrated on the yellow bush lupine (Lupinus arboreus), and chose to inocu...upine seeds collected from six different stands of yellow lupine on the reserve site. As the seeds sprouted, they inoculated the potting soil with various pai...

Bees solve complex colour puzzles

...our differently coloured lights - UV-yellow, blue, yellow and green. To solve this puzzle, the bees had to effectively segment the scene into its different regions of illumination, and then find the correct flowers within each region. Dr Beau Lotto of the UCL Institute of Ophthalmology says: "Although we k...

Molecule by molecule, new assay shows real-time gene activity

... three limitations. He and his colleagues melded a yellow fluorescent protein called Venus with Tsr, a hydrophobic membrane protein. The inclusion of the Tsr domain serves to anchor the fused protein to a cell's membrane, sidestepping the longstanding difficulty of imaging single proteins zipping about in c...

Removing DNA repair gene causes metabolic syndrome

...onal Academy of Sciences, also had enlarged, fatty yellow livers, insulin levels four times higher than normal, elevated levels of fat cell byproducts, and many internal organs almost entirely encased in thick pads of fatty tissue. The results are the first to link DNA repair with the metabolic syndrome, a...

Biologists visualize protein interaction that may initiate viral infection

...dangerous insect-borne diseases such as West Nile, yellow fever and St. Louis encephalitis. These diseases, however, use different biological mechanisms than dengue to infect host cells. Dengue is prevalent in Southeast Asia, Central America and South America. Mosquitoes transmit the virus to people, settin...

Study may help slay 'Yellow Monster'

...ve another name: Leetso, or "yellow monster." The yellow monster surfaced on the Navajo Nation with uranium...mony, balance and beauty. Woody explained that the yellow monster disrupts hozho and that uranium should remain in the ground to ensure balance. In fact, in t...

Major obesity gene is 'lost in the shuffle'

...mely obese, exhibit symptoms of diabetes, and have yellow fur, while mice that lack the ASIP gene are black in color. The gene is widely expressed in tissues throughout the body, so it presumably plays a yet-to-be-defined role in additional biological processes. The ASIP gene has been characterized in...

UGA study explains peaks and troughs of dengue epidemics

...spreading dengue (Aedes aegypti, also known as the yellow fever mosquito) to expand its range. Population growth in developing nations is pushing more people into substandard housing in mosquito-infested areas. And the ease of travel brings the virus to areas that were previously dengue-free when a mosquito...

Radioactive scorpion venom for fighting cancer

...g new therapy for brain cancer. The venom of the yellow Israeli scorpion preferentially attaches to the cells of a type of essentially incurable brain cancers known as gliomas. Responding to this urgent problem, scientists at the Transmolecular Corporation in Cambridge, Massachusetts created a radioact...

Fish virus in Northeast spreading to other fish species

...virus in lake sturgeon, brown bullhead, rock bass, yellow perch, pumpkinseed and black crappie. VHSV causes fatal anemia and hemorrhaging in many fish species but poses no threat to humans or other animals. "The situation right now is that we still have fish dying in Lake Ontario," said Geoffrey Groococ...

Cornell researchers find serious fish virus in Northeast for first time

...lunge, freshwater drum, smallmouth bass, bullhead, yellow perch and crappie, but more study is needed to determine all the species at risk. "The significance to the sport-fishing industry is not known at this point." Sport fishing for chinook and coho salmon is a $100 million annual industry for the Lake ...

Arctic expedition will investigate alien-like glacier

...ered the spring in the mid-1990s when he noticed a yellow stain on the snow while passing over the Borup Fiord Pass in a helicopter. He eventually visited the site and noticed the strong smell of rotten eggs that indicated the presence of sulfur. Grasby then visited the in 1999 and 2001 and collected sample...

Pollen proves beneficial for northern lakes

...cher has found an important spin-off for this fine yellow dust-like powder. Mark Graham, a PhD student from the Department of Biological Sciences at the U of A, has shown for the first time the benefits of pollen on boreal lakes. Rich in nutrients, pollen is an essential component of plant fertilization b...

Massive duplication of genes may solve Darwin's 'abominable mystery' about flowering plants

...f mutations in primitive flowering plants like the yellow water lily (Nuphar). "We can view these basal angiosperms like the Hubble Space Telescope, which helps us get a deeper look into the early history of the universe--these plants allow us to take a deeper look into genomic history." Darwin noticed th...

Rhesus monkeys in Nepal may provide new alternative for HIV/AIDS research

... of vaccines to prevent diseases such as polio and yellow fever, and represent one of the most widely used primate models for AIDS-related research. India, however, banned the export of all macaques in 1978, thus leading to the current shortage. Although China has been exporting captive-bred animals for s...

Why Popeye only has eyes for spinach

...with another carotenoid, zeaxanthin, form an oily, yellow substance at a central point of the retina known as the macula. This yellow oil, called macular pigment, is thought to protect the macula from age-related macular degeneration ...

To elude bats, a moth keeps its hearing in tune

...ell Press. The new work shows that the ear of the yellow underwing moth changes its frequency (pitch) sensitivity in response to sound. As a bat gets closer to a moth, both the loudness and frequency of sound increase. Surprisingly, the sensitivity of the moth’s ear to the bat’s calls also increases, as th...

Research holds promise for herpes vaccine

... remain intact. Measles, mumps, rubella, polio and yellow fever vaccines are all made from attenuated viruses. Research in recent decades has focused on subunit vaccines, which are made from one piece of a virus (a protein subunit). Subunit vaccines are safer than attenuated virus vaccines because the su...

Discovery of the first resistance gene to rice yellow mottle virus

Rice yellow mottle virus (RYMV) was first identified in 1966 in Kenya. It has since been reported in most African countries where rice is grown. The disease is characterized by the appearance of mottling and then tissue death on the leaves. The fertility and dev...

New bird discovered on unexplored Columbian mountain

... was found. A large and colorful finch with black, yellow and red plumage, the new species differs from its closest relatives in having a black back and no white markings on its wings. It also is found in other nearby mountains in Colombia's eastern Andean range. Genetic, morphological and vocal studies hav...

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