Bacteria can be modified to prevent grape blight

A team led by American entomologist Professor Miller designed a genetically modified bacterium that can reduce pest damage to vines. This result is expected to control the large area of ​​vine disease caused by X. fastidiosa bacteria. In the 1990s, California's vineyards discovered for the first time a winged pest. On the surface, it is the damage caused by this pest that causes the grape crop to die due to its loss of water absorption function. However, in fact, the real cause of the death of the vine is a species of X. fastidiosa that lives in the mouth of the pest. . When pests eat into grape crops, it also brings the bacteria to the vines, causing a plant disease called Pierce that causes the leaves and fruits of the grapes to dry, causing the entire vine to die. This deadly disease not only spreads quickly, but its new varieties have also allowed oleanders, asters and apricots to also be transmitted to Pierce's death syndrome. The Miller team did not directly address pest management methods. Instead, they focused on the X. fastidiosa bacterium and designed a "symbiotic" symbiotic with the pests, a species closely associated with the X. fastidiosa bacteria and settled on the grapes. Tree genetically modified bacteria. Laboratory tests have shown that when pests eat crops, they also absorb the designed bacteria, which in turn can deactivate X. fas鄄tidiosa bacteria. Miller believes that because the designed bacteria survive for only a few weeks, it will not have a continuous impact on the environment. Moreover, this design of bacteria will not enter the vine stems and grapes, and will not cause harm to the public. Whether this result can be entered into the crop experiment stage has yet to be approved by the US Environmental Protection Agency and the U.S. Department of Agriculture.

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