Tag: "root" at biology news

Pinpointing the protein problem in Lou Gehrigs Disease

...a number of different genetic mutations, is at the root of roughly one-fifth of inherited or familial ALS (FALS) cases. Around 10 percent of ALS cases are familial (FALS) and of those, 20 percent involve a mutation of the SOD1 gene, says Coln. What is it that these mutations do to the protein to make it p...

Plant stems and leaves are always proportional to roots

...ize about the ways stem and leaf biomass relate to root biomass across the vast spectrum of land plants. ... and found that the proportions of leaf, stem, and root biomass remain, on average, constant....

NSF/EPA team up on grants to treat pollution with plants

...gy of chemical-degrading bacteria that live in the root systems of monoterpene-producing plants; the role ...gy of chemical-degrading bacteria that live in the root systems of monoterpene-producing plants. Results of this research will provide information on the m...

Stanford researchers home in on Huntington's disease treatment

...ormal form of the gene called huntingtin is at the root of the problem. In healthy individuals, the huntingtin gene encodes a protein with 6 to 34 glutamine molecules - one of the essential building blocks of proteins - at one end. When the number of glutamine molecules at the end of the protein exceeds 3...

New transgenic rat model of ALS expands research possibilities

...a number of different genetic mutations, is at the root of roughly one-fifth of inherited ALS cases. The SOD1 rats, like the SOD1 mice before them, develop a disease very similar to ALS in humans, which is characterized by the death of motor nerve cells throughout the central nervous system. The rats are...

Gondwana split sorts out mammalian evolution

...f scientists discuss alternative positions for the root of the placental tree. They report results based on Bayesian and other statistical methods and use a data set that comprises approximately 16,400 base pairs for each of 44 mammals and that includes segments from 22 different genes. "We have resolve...

Tips from the Journals of the American Society for Microbiology: January 2002

...ughtransport of the pathogen into the plant by the root system. Theinaccessibility of a large number of organisms, as a consequence of theirsubsurface location, is perhaps the reason for the lack of effectivenessof surface-sanitizing treatments." (E.B. Solomon, S. Yaron, K.R. Matthews. 2002. Transmissi...

UCLA researchers invent first technique to image Alzheimer's onset

...ry center is the first location where plaques take root and destroy brain cells," Barrio said. "So its the first place where scientists must seek evidence of the disease." Before UCLAs discovery, pathologists could make a definitive Alzheimers diagnosis only by brain autopsy. As a result, physicians were ...

January media highlights: GEOLOGY and GSA TODAY

...luctuations. Partial detachment of a lithospheric root under the southeast Carpathians: Toward a better definition of the detachment concept. Zohar Gvirtzman, Institute of Earth Sciences, Hebrew University, 91904 Jerusalem, Israel. Pages 5154. The southeast corner of the Carpathian Mountains (Romania) ...

Geophysicist studies life in the early solar system

...r whether Eukarya, which we are, has a thermophile root or not,`` says Sleep. ``We may never have had a high-temperature-organism ancestor. But clearly two of the three branches look like asteroid survivors: very complex, highly-evolved organisms that are thermophile.`` The second strand of evidence is ge...

Purdue leads center using pollution-busting plants, microbes

...s are promising for certain projects because their root systems stimulate the growth of microbes that help to break down organic pollutants. The center's 10-state outreach region consists of Indiana, Ohio, Illinois, Michigan, Minnesota, Wisconsin, Kansas, Missouri, Nebraska and Iowa. The other universitie...

Gene silencing produces disease resistance in plants

...ful for crops that use rootstocks -- the trunk and root portions of a plant -- on which the desired variety is grafted. Farmers use grafted rootstocks to grow many tree and vine crops. Some day, gene silencing may be used to produce disease-resistant rootstocks for growing non-transgenic crops. The rootst...

Mountain cloud forests imperiled by lowland deforestation, says Science study

...sheltered environment, plants called epiphytes can root themselves on trees and other plants, rather than in the soil. "This type of ecosystem depends on the forest staying constantly wet, and consistently foggy. Any changes in this sodden state can produce dramatic changes for the flora and fauna," says ...

Scripps chemist wins national award for neurodegenerative disease research

... is familial amyloid polyneuropathy (FAP). At its root is a misshapen version of transthyretin, a blood protein that helps regulate metabolism and nutrition. As in Alzheimers and other amyloid diseases, and for reasons yet unclear, the protein refolds into a new shape that clumps together instead of func...

Fire ant queens and workers negotiate truce' on colony sex ratio

...me males with haploid, or single, chromosomes. The root of the power struggle between queens and workers results from the different interests they have in raising new members of the colony. Both as a result of evolutionary pressures are interested in ensuring the survival of their genes. The queen does ...

Russian, PNNL scientists advance US seed production, oil remediation

...biotic relationship between microbes and the plant root in soil. Initial studies showed it increased the growth rate of grasses and many broad-leaf plants by 40 percent under controlled conditions. "Rather than waiting 28 days for Kentucky Blue Grass seeds to germinate, that process may take only seven da...

Picky plants: Do they 'choose' the best fungal partner?

..."expensive" fungus or from selective growth of new root tips. By isolating pure cultures of different fungi to more closely examine the exchange of nutrients between plant and fungus, Kummel hopes to unravel this mechanism. These experiments are in progress. Ultimately, Kummel's work could have implicat...

Eaten as food, African orchids threatened by illegal trade

...use in chikanda or kinaka, a delicacy in which the root or tuber of terrestrial orchids is the key ingredient in a type of meatless sausage. Though the food has declined in popularity in Tanzania, it has become increasingly prevalent in neighboring Zambia, subsequently fueling a booming international com...

Genetically engineered tomato plant grows in salty water

...tting their ability to take in water through their root cells. In fact, if salt concentrations in the soil are very high, flow of water into the plant is actually reversed and the plant dehydrates and dies as water is drawn out of its cells. To counter this effect, Blumwald and Zhang genetically engineere...

Scientists map the complete genome of an important agricultural bacterium

...: * How does the bacterium stimulate the growth of root nodules? * How does it invade the plant without triggering host defenses? * Why does the microbe produce nitrogen for the host rather than for itself? "I began working on this bacterium in 1979, and the field is completely transformed now," Long con...

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