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Tag: "grows" at biology news

Molecular mechanism of feather formation found

...f ridges in the developing barb. "Each barb ridge grows in length by recruiting new cells, which proliferate at the growing base of the feather germ, to join the base of that barb ridge," Harris says. "The variations in the initial number of barb ridges will directly affect the shape, and consequent funct...

Genetically modified maize not found in southern Mexico

...a degree of hardiness that way. "Indigenous maize grows mainly in the mountains ?the climate and soils can be pretty harsh there," she said. "Also, the influx of transgenic seeds may have declined if farmers became aware of the issue and took extra precautions with their seed stocks." The Mexican governm...

Corn grain mould used as pesticide

...in is produced by the mould aspergillus flavus. It grows in hot, arid regions, in the south-west of the US ..."We can only influence which strain of aspergillus grows on it: a dangerous producer of toxins ?or the non-toxic variant." ...

Purdue researchers find key to rice blast fungus

...called an appressorium. This bubble-like structure grows until it has so much pressure inside that it blasts through the plant's surface. "The penetration structure has enormous force, called turgor pressure, that is 40 times the pressure found in a bicycle tire," Xu said. "It's like driving nails through...

Picky female frogs drive evolution of new species in less than 8,000 years

...dish-brown splotches, is common around streams and grows to about 2 1/2 inches in length. Because of geographic isolation that began between 1 and 2 million years ago with the retreat of rainforest to higher elevations, two separate frog lineages developed in the northern and southern parts of the species...

NC State researchers redesign life for Mars and beyond

...crobe that can survive in extreme temperatures. It grows and dwells in underwater sea volcanoes where temperatures reach more than 100 degrees Celsius, or that of boiling water. Occasionally, the organism is spewed out into near freezing deep-sea water. The NC State research, funded for two years and $400...

New discovery: If it weren't for this enzyme, decomposing pesticide would take millennia

CHAPEL HILL ?An enzyme inside a bacterium that grows in the soil of potato fields can -- in a split second -- break down residues of a common powerful pesticide used for killing worms on potatoes, researchers have found. That may be expensive for farmers but lucky for the environment because Universit...

Researchers find gland that tells fruit flies when to stop growing

... front of the brain, assesses the fly's size as it grows during the larval stage. The gland then sends hormonal signals when it senses the fly has reached a size appropriate to enter adulthood. The scientists found they could use the pathway that sends insulin to a fly's cells to genetically manipulate th...

New understanding of regeneration gained by Forsyth scientists

...ms are cut in half, the bottom section of the worm grows a head and the upper section a tail. Scientists have suspected that the ability of previously adjacent cells (on either side of the cut) to adopt radically different fates, as is the case with planaria where the cells have to decide whether to build...

How the neuron sprouts its branches

...Golgi orient toward one dendrite, it takes off and grows dynamically to become the longest dendrite." The researchers also used tracer molecules to track the molecular cargo secreted by the Golgi, said Ehlers. "We saw very clearly that this cargo that originates in the Golgi gets directed towards the one ...

A salty tale: New bacterial genome sequenced from ancient salterns

..., a kind of biological back-up. Because S. ruber grows in high salt, its enzymes are strikingly stable. And that means the bacterium may hold promise for industrial applications. Meanwhile, TIGR's collaborators are pursuing studies of Spain's salterns, testing the ponds to find out what other microbes ca...

Poison + water = hydrogen. New microbial genome shows how

...collaborators discovered why C. hydrogenoformans grows more rapidly on carbon monoxide than other species: The bug boasts at least five different forms of a protein machine, dubbed carbon monoxide deyhydrogenase, that is able to manipulate the poisonous gas. Each form of the machine appears to allow the...

Antibacterial coatings cut infection rates

...extracted from Australian macro algae seaweed that grows off the eastern coast. The chemicals produced by these macro algae were found to prevent the colonisation of microbial organisms such as bacteria and fungi on their surfaces, helping to keep the algae clean. Researchers at the University of New South...

Hot-spring bacteria flip a metabolic switch

...ynthetic leaves. A different type of cyanobacteria grows in multicellular strands and makes specialized N2-fixing cells called heterocysts that are walled off from the photosynthetic cells. Many researchers believed these filamentous cyanobacteria were the major N2 fixers in microbial mats. But they are n...

Breakthrough for stem cell research

...d, which does not use animals in any way. Our line grows on human fetal fibroblast feeder layer that does not require fetal calf serum," said UNSW Senior Lecturer, Dr Kuldip Sidhu, who was the lead scientist responsible for the creation of the line. "Other researchers have used animal tissue to keep the h...

Sweetgum tree could help lessen shortage of bird flu drug

The sweetgum tree grows widely throughout the country and is known for its...tential for fighting bird flu." The sweetgum tree grows widely throughout the United States and other parts of the world. In this country, it is particularl...

Gene needed for butterfly transformation also key for insects like grasshoppers

...titutes of Health. Genes regulate how an organism grows and changes physically as it develops. The broad gene encodes a protein that attaches itself to a specific region of a DNA chain and controls which other genes will be copied. The researchers suspect that broad must be present for the physical change...

For one Stanford doctor, the beat goes on during open-heart surgery

...rend toward less-invasive methods of heart surgery grows stronger. "We need to be researching this," said Robert Robbins, MD, chair of the cardiothoracic surgery department at the School of Medicine, who hired Ihnken this summer to lead investigations into the potential benefits of less-invasive surgeries...

CU, USDA team to curb two invasive, poisonous vines

...Tommaso said. The pink-flowered pale swallow-wort grows rapidly in both forest understories and in open fields of undisturbed soil throughout central and upstate New York, around the Great Lakes and in Canada. The purple-flowered black swallow-wort prefers open areas and have a foothold in the Hudson Vall...

Researchers release new variety of asparagus

...gus, which is a Greek word meaning stalk or shoot, grows best in sandy, well-drained soils. The plant can be productive for 15 years or more. Asparagus spears grow from a crown ?the root system of an asparagus plant that is grown from seed. The crown is planted about a foot deep in sandy soils. Spears grow...

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