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View Diary: GM wheat in Oregon may end Monsanto Madness (174 comments)

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  •  The nitrogen fixing capability of legumes (0+ / 0-)

    does not work quite like that. The roots of legumes become infected with rhizobia bacteria which are found in the soil. These bacteria are attracted to various types of legumes. The bacteria enter the plant root cells and trigger cell division which produces nodules. The cell infection creates rhizobia bacteroids which in turn fixes nitrogen by producing ammonia which is left in the soil after the plant dies. The plant feeds the bacteria which in turn fixes nitrogen for the plant to use. The process is a symbiotic relationship between plant and bacteria.

    If there are none of these bacteria in the soil, the legume could not produce the nitrogen fixing nodules.The genetic modification of each over millenia is no different than that of the entire ecosystem where there is a host and a parasite.

    •  Agrobacterium DNA Inserts Randomly Into The Plant (0+ / 0-)

      Wow I'm going to have to do some diaries about basic science.  Yikes I mean this is 50 year old stuff.

      Agrobacterium is a genus of Gram-negative bacteria .. that uses horizontal gene transfer to cause tumors in plants. Agrobacterium tumefaciens is the most commonly studied species in this genus. Agrobacterium is well known for its ability to transfer DNA between itself and plants, and for this reason it has become an important tool for genetic engineering.

      The Agrobacterium genus is quite heterogeneous. Recent taxonomic studies have reclassified all of the Agrobacterium species into new genera, such as Ruegeria, Pseudorhodobacter and Stappia, but most species have been reclassified as Rhizobium species.

      The plasmid T-DNA is integrated semi-randomly into the genome of the host cell.....The T-DNA carries genes for the biosynthetic enzymes for the production of unusual amino acids, typically octopine or nopaline.

      There’s always free cheddar in a mousetrap, baby

      by bernardpliers on Mon Jun 03, 2013 at 08:02:49 AM PDT

      [ Parent ]

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