Using Gene Technology to Prevent Vegetable Soft Rot Disease
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Soft rot that causes vegetable rot is one of the major enemies of crops. Researchers at the Institute of Molecular Agricultural Biology in Singapore have extracted a gene that is resistant to soft rot that can interfere with the signal transmission of pathogens and effectively destroy their ability to cause disease. The pathogen of soft rot, Irvine, communicates with each other by a special signaling method. The researchers found that Erwinia bacteria emits a small molecule called an auto-inducer that binds to other inducers of the same type of bacteria and then absorbs it back into the cell. The pathogen exchanges signals through the inducer. When the inducer accumulates to a certain amount, the germs will receive a signal of “powerful enough†to launch a massive invasion and cause vegetable soft rot. If the content of the inducer is not enough, the germ will receive a signal of "not enough force" and decide to temporarily lurk and wait for another move. In response to this characteristic, the researchers found more than 4,000 kinds of bacteria to kill the soft rot's nemesis after more than one year of experiments and successfully extracted effective anti-soft rot genes. Implanting this gene into vegetables can produce specific proteins that interfere with the process of signal transduction by the use of an inducer in Owen bacterium and avoid the growth of pathogenic bacteria so that the vegetables are resistant to soft rot.