Tag: "potato" at biology news
Malaria, potato famine pathogen share surprising trait
...ia in humans and the microbe that caused the Irish potato
famine use identical protein signals to start an i...moun says not to worry there's no chance that the potato
pathogen will jump to humans, nor is it likely that the malaria parasite will start infecting plants...
Pollutant haze heats the Arctic
... is the same physical behavior that explains why a potato
cooks faster in a microwave oven if it is cut into...cient cooking, because more of the interior of the potato
is exposed to the penetrating microwave radiation," Garrett says. ...
Biotech cotton provides same yield with fewer pesticides
...otton pests. To control the other two pests, sweet potato
whitefly (Bemisia tabaci) and the western tarnished plant bug (Lygus hesperus), growers use broad-spectrum insecticides and other types of insecticides known as insect growth regulators. Carrire and his colleagues studied how Arizona farmers actuall...
UMaine researcher puts new date on early agriculture
...used for making tools and other items. Evidence of potato
starch was also found at the site. In addition to changing some long-held beliefs about South American agriculture, the discovery also points to the potential of microfossil analysis as an important new tool for archeologists. The technique is used...
Plants have a double line of defence
...her pests for example, the pathogens causing late potato
blight. PEN2 is therefore a basic component of the plant's immune system with a broad range of effects. However if PEN2 is missing, the plant is not completely helpless against fungal diseases. There is still another line of defence which they have t...
New classification of eukaryotes has implications for AIDS treatment, agriculture and beyond
...men is needed. 2) Phytophtora, an organism causing potato
blight, such as the one that caused the Irish famine in the 19th century, is now known not to be a fungus, which explains why fungicides are not effective treatments. 3) Plasmodium, the causative agent of malaria, is now known to share ancestry with ...
New discovery: If it weren't for this enzyme, decomposing pesticide would take millennia
...nzyme inside a bacterium that grows in the soil of potato
fields can -- in a split second -- break down resi.... And the chemical would remain in the soil of the potato
fields where it is now used in colossal amounts, contaminating groundwater and posing a threat to hu...
Finding rewrites the evolutionary history of the origin of potatoes
...tional Academies of Sciences, a team led by a USDA potato
taxonomist stationed at the University of Wisconsi...analyzed DNA markers in 261 wild and 98 cultivated potato
varieties to assess whether the domestic potato
arose from a single wild progenitor or whether it ar...
A slight difference and significant similarities
...ormation of inulin sugars were introduced into the potato
as these polysaccharides have a beneficial effect ...ith colleagues from the University of Wales to the potato
varieties listed above. "Our methods can of course be adapted for comparing other food plants," says...
Scientists determine structure of enzyme that disrupts bacterial virulence
...ious studies to significantly decrease soft rot in potato
plants. The Brandeis and University of Texas team purified the enzyme and identified its structure using X-ray crystallography, an essential step toward developing drugs that may reduce the pathogenicity of bacteria involved in biowarfare threats su...
Exercise aside, genes may ultimately dictate seniors' mobility
...se who exercised stayed healthier than their couch potato
peers, but those born with a certain gene benefited the most from physical activity, said Marco Pahor, M.D., director of University of Florida's Institute on Aging and the multi-institutional study's senior author. "To our knowledge, this is the firs...
Report recommends renewed focus on food and agriculture research
...e than six million animals in England in 2001, and potato
late blight, which caused the great potato
famine in Ireland in the 19th Century. A new variant of the blight emerged in the United States in ...
Researchers find gene that may be at root of potato blight
... in triggering the blight that wiped out Ireland's potato
crops a century-and-a-half ago. And the pathogen ..., a devastating disease that can destroy fields of potato
and tomato plants. Plant pathogens contain a diverse set of such avirulence genes which, depending o...
DOE JGI announces 2006 Community Sequencing Program portfolio
...relative not too distant from the likes of tomato, potato
and other dicot, or broadleaf, crops. Researchers from Duke University, who proposed the project, believe it is reasonable to expect the molecular genetic basis of the monkey flower's path of evolution and adaptation could be readily transferable to ...
Mechanism for the captation of nutrients in plants- unknown to date
...example, in order to increase starch production in potato
or maize, endocitosis would have to be encouraged through the stimulation of the genes involved in the formation of the vesicles a hypothesis that is currently being verified....
Hawaiian soils reveal clues to cultural history
... Kahikinui based on dryland agriculture with sweet potato
as the main crop. These settlements were ultimatel...r agricultural system to an optimal zone for sweet potato
cropping within a landscape that was on the marginal limits for tropical root production," wrote the...
15 generations of untrained jocks, couch potatoes show big physiological adaptations
.... Similarly, if you're a practiced and proud couch potato
who suddenly woke up to the fact that you're a "natural" athlete, the credit could also belong to your genes. Exercise research traditionally has focused on the effects of training, rather than underlying genetic mechanisms. But physiologists wonder...
Gorilla diet tips -- Have we 'evolved to eat mush'?
... his little teeth, Lucas said. After all, a cooked potato
can reduce stress to molars by up to 82 percent, compared with a raw potato. Peter S. Ungar of the University of Arkansas also studies dental evidence to understand the evolution of the modern diet. At the AAAS Meeting, he is expected to describe two...