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Tag: "trees" at biology news

Salk scientists untangle steroid hormone signaling in plants

...ay allow growers to control the height of grasses, trees or other plants, thereby eliminating the need to constantly manicure gardens. Based on earlier studies, the Salk researchers had developed a model that explained what happens inside a plant cell when brassinolide signals a plant cell to start growi...

Gene therapy prevents the onset of diabetic symptoms in mice

...ltered soils and reduced the number of sugar maple trees growing in the Northeast, according to a new study... seedlings that survive and mature, and more adult trees die, the researchers found. They drew these conclusions after adding nutrients to soil in a test plo...

Acid rain causing decline in sugar maples, say researchers

...ltered soils and reduced the number of sugar maple trees growing in the Northeast, according to a new study... seedlings that survive and mature, and more adult trees die, the researchers found. They drew these conclusions after adding nutrients to soil in a test plo...

Important gene controlling tree growth and development found

...anding of how the growth and development of forest trees is controlled. In an article published in the inte...ree flowering. With the help of this gene poplar trees can be stimulated to flower after a few weeks instead of after the normal 10-15 years. The scientis...

Scientists discover that ancient genes dictate flowering, fall bud set

... response to day length. It turns out that Populus trees (aspens, cottonwoods, poplars), the first tree to ...plar, and observed normal flowers on six month old trees -- in a tree species that ordinarily takes 8 to 20 years to flower. Why does it take trees so many ...

No-mow grass may be coming to your yard soon

...plant development. Beyond perpetually short grass, trees could be made more compact for better growth in crowded cities, and berry bushes could be made taller for ease of harvesting. To chart the pathway, Chory and colleague Grégory Vert of the Salk Institute's Plant Biology Laboratory examined the molec...

New method confirms importance of fungi in Arctic nitrogen cycle

...up nitrogen from the soil and transfer it to small trees and shrubs, the heavy nitrogen isotope, nitrogen-15, is reduced in abundance in the plants and enriched in the fungi. Using a mass balance approach, an accounting of material entering and leaving a system, the researchers quantified the transfer of n...

Biologists find regions of rice domestication

... from Taiwan have examined the DNA sequence family trees of rice varieties and have determined that the crop was domesticated independently at least twice in various Asian locales. Jason Londo, Washington University in Arts & Sciences biology doctoral candidate, and his adviser, Barbara A. Schaal, Ph....

Biofuels researcher searches for new sources

...ically produced materials like grains, straw, hay, trees and fruits. He and his collaborators are working on a project to evaluate the ethanol production potential of various straws, hays, and silages in Montana. People can make fuel from many kinds of plants, though over 90 percent of ethanol made in t...

Beekeepers work hard for the honey, despite changing tupelo forest

...verse ecosystems in North America. Although tupelo trees can be found elsewhere, the white tupelo from whic...ng of the dredged material has cut off many tupelo trees from their source of fresh water. Upstream water diversion also has lessened the flooding needed for...

Agriculture and tropical conservation: rethinking old ideas

...e big, rich landowners who come in and cut all the trees down and turn the land into cattle pastures. So th...ional "agroforests"---farms where fruit and timber trees share space with other crops, Vandermeer said. "That's the kind of agriculture that's friendly to bi...

Primates take weather into account when searching for fruits

...d that the monkeys were more likely to revisit fig trees (in which they had found fruit before) after a period of warm and sunny days than after a period of cold and cloudy days. Temperature and solar radiation are known to accelerate maturation of fruits and insect larvae inside them. The researchers were...

The vicious cycle of rainforest destruction

...ainforest gets invaded by savanna, which has fewer trees and holds less carbon in the soil. Savanna also doesn't recycle water in the same way as rainforest, so the carbon loss from the savanna is greater and the atmosphere becomes drier." The researchers want to find out under what conditions rainforest ...

It's all in the genes

...evel of tannins in cottonwoods, which are dominant trees in riparian habitats in the West. Different indivi...nge and other impacts on the environment. Planting trees that are genetically diverse will result in increased diversity of other species in the dependent co...

DOE JGI sequences, releases genome of symbiotic tree fungus

...r, a fungus that forms a beneficial symbiosis with trees and inhabits one of the most ecologically and comm...with a critical resource to develop faster-growing trees for producing more biomass that can be converted to fuels, and for trees capable of capturing more c...

Honey helps problem wounds

...urs in New Zealand and Australia. Honey from these trees has a particularly strong anti-bacterial effect, even in a 10% dilution. 'It is not yet known exactly why this is,' Dr. Arne Simon says. 'Probably it is a mix of phenol-type substances which come from the plant and make life particularly difficult fo...

Better beetle sought for salt cedar control

...ajordamage," she said. "But they may defoliate the trees within the cages. Wewere warned that it will go quickly, and we may run out of food within thetents." Michels and Carney said their Texas salt cedar beetle work is part of alarger study that is looking at beetles from Fukang, China; Crete, Greece;Tu...

Value of services performed by insects tops $57 billion in US

...ect services as decomposing carcasses, garbage and trees (thereby decreasing the likelihood of forest fires); producing honey, shellac, dyes and other products; being used in medicine or as a source of food for animals other than those used in hunting, fishing and birding; and providing a direct source of ...

Discovery may speed forest biotechnology

...s have discovered the genetic controls which cause trees to stop growing and go dormant in the fall, as wel...ses, it should be possible to genetically engineer trees that flower and reproduce more quickly. The long, slow growth of trees before they produce seed has ...

Amber reveals ecology of 30 million year old spiders

...It was also found the fauna of the amber producing trees in each region accounted for this difference in si...l complexity of Baltic compared to Dominican amber trees explains the presence of larger web-spinners. The Dominican trees are long, thin and smooth whereas ...

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