British scientists found, barley and other cereals are often infected with the powdery mildew genome of the bacteria exist in a large number of parasite genes, "transposons", which is highly adaptable and powdery mildew can destroy the plant immune system "culprit." This important discovery to further understand the evolution of plant diseases and insect pests, powdery mildew prevention of infectious diseases such as development of new agricultural technology has great significance. The study, published in the latest issue of "Science" magazine.
Imperial College London, Department of Life Sciences, the study led by Dr. barley powdery mildew were on the genome decoding, the results show that the reason why the evolution of powdery mildew so fast because of its memory in the genome known as the "transposon "parasitic genes that change the plant is used to detect disease attacks the host molecules, the ability of bacteria to plant identification chaos. Transposons are a class of bacterial chromosomes, plasmids or phage genetic elements to move among themselves, is the genome with a specific characteristic of the independent DNA translocation sequence can be cut and re-integration process from a series of genomic a position "jumps" to another location.
Shipanboshi said: "powdery mildew in the number of transposon staggering. Generally speaking, the genome will try to maintain the transposon in the controllable range. But a breakthrough in the powdery mildew genome transposon transfer control to bacteria to adapt more quickly to changes in plants and damage their immune system. "
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