Re: Cause of Potato Famine & Why Its Coming Back
Posted by Mike B. on 12/30/09
I have nothing to do with any of that. On 12/29/09, Deborah wrote: > 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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