Re: Cause of Potato Famine & Why Its Coming Back
Posted by Deborah on 12/29/09
Oh, the class action over the formaldehyde and FEMA trailers... On 12/29/09, Mike B. wrote: > Which FEMA trailer suit are you referring to? > > On 12/28/09, Deborah wrote: >> sorry, I realize that might be over your head, I just thought >> you'd realize it and have enough sense to let someone else > respond... >> >> Oh, maybe you were responding to Sharon's post rather than mine? >> >> Hey, how did that FEMA trailer suit work out? >> >> On 12/28/09, Mike B. wrote: >>> So......how do you make the leap to the conclusion that the >>> potato famine is coming back? >>> >>> On 12/27/09, Deborah wrote: >>>> >>>> Malaria, potato famine pathogen share surprising trait >>>> >>>> http://www.cosmosmagazine.com/news/297/malaria-potato-famine- >>> pathogen-share-surprising-trait >>>> >>>> On 12/27/09, Sharon wrote: >>>>> http://www.naturalnews.com/027801_potato_famine_crop_failure >>>>> .html >>>>> >>>>> (NaturalNews) Researchers have sequenced the genome of the >>>>> fungus responsible for the Great Irish Potato Famine in the >>>>> 1800s, uncovering the reason that the organism continues to >>>>> plague potato farmers to this day. >>>>> >>>>> "This pathogen has an exquisite ability to adapt and >>>>> change, and that's what makes it so dangerous," said lead >>>>> researcher Chad Nusbaum of the Broad Institute in >>>>> Cambridge, Mass. >>>>> >>>>> The organism, known as Phytophthora infestans, is a type of >>>>> water mold that continues to cost potato farmers billions >>>>> of dollars every year. It prefers cool, wet climates and is >>>>> capable of destroying entire fields of potatoes and >>>>> tomatoes within only a few days. In 2003, P. infestans >>>>> destroyed Papua New Guinea's entire potato crop. >>>>> >>>>> The mold evolves resistance to antifungal sprays with >>>>> astonishing speed. In just the last few years, potato >>>>> farmers in the United Kingdom have increased chemical >>>>> spraying by 30 percent in an attempt to hold the organism >>>>> at bay, and the ongoing blight in Ireland has been >>>>> called "the worst in living memory," according to the BBC. >>>>> >>>>> According to information published in the journal Nature, >>>>> P. infestans' genome is especially large, at least twice as >>>>> long as the genetic code of its closest relatives. Some >>>>> regions of the genome are particularly dense, containing >>>>> many genes in a small area, while others are much less >>>>> dense. It is these gene-light areas that may hold the key >>>>> to the organism's adaptability: more than 700 key genes >>>>> were mapped in these regions, some of them coding for >>>>> attacks on potatoes' immune systems. >>>>> >>>>> "The regions change rapidly over time, acting as a kind of >>>>> incubator to enable the rapid birth and death of genes that >>>>> are key to plant infection," said co-lead author Brian >>>>> Haas. "As a result, these critical genes may be gained and >>>>> lost so rapidly that the hosts simply can't keep up." >>>>> >>>>> Modern agriculture has exacerbated the problem, said Paul >>>>> Birch of the Scottish Crop Research Institute. Widespread >>>>> application of chemicals encourages pest evolution, while >>>>> genetic standardization of food crops makes them more >>>>> vulnerable to infestation. >>>>>
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