Tag: "famine" at biology news

DNA Helps Track Origins Of Growing Blight Problem

...sease which was a major factor in the Irish potato famine of 1845-46."The underlying principle in all of this is that neither borders, nordistances, can prevent diseases from spreading," he concludes. His research is funded by the B.C. Potato Growers Associationand is being conducted in coll...

Virulent Fungus Devastating Potato Crops

...atening than ever. More than 150 years after the famine that took an estimated 1 million lives, a newer virulent strain of the fungus is causing widespread crop devastation in the United States. Agricultural scientists are finding the fungus, Phytopthora infestans , better known as late blight, difficul...

Ancient 'Volcanic Winter' Tied To Rapid Genetic Divergence In Humans

...,000 years of the last Ice Age, brought widespread famine anddeath to modern human populations around the world. The abrupt "bottleneck,"or decrease, in our ancestors' populations, in turn, brought about the rapid"differentiation" - or genetic divergence - of the surviving populations. The hypothesis, o...

Researchers isolate gene that helps plants take in iron from soil

.... A lack of nutrients that is not associated with famine conditions is known as"hidden hunger" and is recognized as the world's biggest malnutrition problem,says Guerinot. "Because plants are the principle source of iron for most people,the generation of iron-fortified crops could have a significant impact...

Antibiotics-resistant bacteria

... between short periods offeast and long periods of famine and stress," Prof. Minsky said. "In order tosurvive, bacteria have evolved sophisticated mechanisms that allow them toprotect themselves during starvation and stress, as well as to very rapidlyresume growth when nutrients are again available. The ord...

Plant pathologists to discuss anti-crop bioterrorism and food security, August 1999

St. Paul, MN -- You've heard of the Irish potato famine andother plant diseases that have wiped out a country's staple crop. Throughouthistory, there have been many famines and epidemics as a result of disease. Whatif they were caused deliberately? Many people are aware of the threat ofbiological weapons ...

Higher obesity rates prevail among Dutch women exposed to famine in utero

...of age, who had been exposed in utero to the Dutch famine of1944-45 which followed on the Nazi occupation. M...ar disease. Womenwhose mothers were exposed to the famine early in their pregnancies wereespecially prone to later obesity, and the investigators conclude tha...

Fetal and birth complications increase mental illness risks

... affective disorder increased in births exposed to famine in the second trimester and jumped significantly for subjects exposed in the third trimester. ["Further Evidence of Relation Between Prenatal Famine and Major Affect Disorder," by Alan S. Brown, et. al., p 190] APAfastFAX#6905 In a 19-year NIMH-supp...

UC Davis expert identifies oak-tree killer and warns public to use caution

...ated to the organisms that caused the Irish potato famine of 1845-50 and the modern deaths of Port Orford cedar trees in Northern California and southern Oregon, eucalyptus forests in Australia and oak forests in Mexico, Spain and Portugal. It is a member of the genus Phytophthora (pronounced Phy-TOFF-thor-...

Researchers discover major diabetes susceptibility gene

...which have historically protected them in times of famine but may endanger them in the current environment of nutritional overabundance. Pimas with the "G" version of the calpain 10 gene demonstrate many of the characteristics associated with a more frugal energy balance, such as decreased sleeping metabol...

Dutch men and women exposed to famine in utero have poor lipid profiles

Adult men and women who were exposed to famine in utero during the earliest stages of gestation e...g the German occupation of Holland in 1944-45. The famine was clearly delineated within a 5 month time period and, unlike other famines that have been studied...

DNA evidence calls Irish potato famine theory into question

...train of late blight caused the great Irish potato famine of the 1840s, a catastrophic crop failure that kil...nds that the strain of the pathogen blamed for the famine isn't the culprit after all. DNA fingerprinting analysis of 150-year-old leaves, preserved from t...

AAAS speakers report worldwide 'epidemic' of obesity

...ed in comparison to the health challenges posed by famine and infectious disease to lower and middle income countries in Asia, Africa, the Middle East, and Latin America. But now, the developing world faces rapid shifts in urbanization, technology, food processing, and even leisure time, and all these facto...

Low-level oil spills can cause serious damage

...eagues had shown that iguanas that died because of famine had increased blood levels of the stress hormone corticosterone in the weeks before their death. By coincidence, the researchers had tested the corticosterone levels in the iguanas just three days before the tanker Jessica ran aground on San Cristbal...

Ecologist's book on introduced species' destructiveness

...d in India on imported seeds and caused the Bengal famine of 1943 in which 2 million perished. Certain microbes need no introduction, and they didn't need a visa to traverse the continents and cause contagion. Tuberculosis, AIDS, hepatitis, influenza, cholera, bubonic plague are among diseases that the book...

GM row delays food aid

...eered maize is overshadowing efforts to tackle the famine that threatens the lives of at least 14 million pe...doesn't want USAID's maize, despite the spectre of famine looming over six million of its citizens. "The position is that no GM foods are allowed in Zimbabwe,...

JGI to decode DNA of destructive plant pathogen

...ructive plant diseases, including the Irish potato famine in the 1840s. By sequencing and comparing the DNA of the two Phytophthora genomes, the scientists hope to uncover clues to virulent diseases that are attacking 17 species of trees on the West Coast, including redwoods, big leaf maples, bay trees and...

Virginia Bioinformatics Institute to decode plant devourer genomes

...ora species, P. infestans, caused the Irish potato famine in the nineteenth century. This project will help researchers understand how Phytophthora operates and how best to inhibit it from infecting crops and forests. According to Tyler, "Phytophthora pathogens are literally destroyers from a distant king...

Six reporters named to receive 2002 AAAS Science Journalism Awards

...County Clare during the depths of Ireland's potato famine in 1847. The online awards category helps to promote best practices in the emerging field of Internet-based science journalism, Boyle noted. "I'm humbled and grateful to be in such august company," he added. "I hope this recognition will encourage on...

Field Museum uncovers evidence behind man-eating; revises legend of its infamous man-eating lions

... by "provisioning" Tsavo lions with dead humans. A famine of epidemic proportions on the heels of a severe small pox outbreak, local burial 'practices' and hundreds of Indian laborers, dead from disease, all helped supply the Tsavo lions with humans in the 1890s and encourage their attraction to humans as p...

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