Re: Cause of Potato Famine & Why Its Coming Back
Posted by Mike B. on 12/29/09
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. >>>>
Posts on this thread, including this one
|