My scientists found out the mechanism of bacterial blight on Rice

Wang Shiping, Professor of the State Key Laboratory of crop genetic improvement, Huazhong Agricultural University, has shown that bacterial blight can utilize the dominant xa13 gene, which is essential for rice growth and reproduction, to reduce the distribution of copper in rice conduit and damage rice This study not only revealed a new mechanism of pathogen bacteria using host genes to conquer the host, but also revealed a typical example that may involve the coevolution of rice and pathogen Relevant research papers have been published online in the top international journal of plant biology, plant cell, in the form of key recommendations, with introduction articles distributed at the same time It was found that some bacterial blight were very sensitive to copper Increasing the content of copper in the medium could inhibit the growth and reproduction of this kind of bacterial blight Rice absorbs copper from the root and transports it to all parts of the plant through a conduit, which is the conduit through which bacterial blight spreads and causes disease in rice Increasing the content of copper in the vessel will inhibit the growth and reproduction of bacterial blight Further studies showed that the cunning pathogen could use xa13 gene, which is indispensable for rice pollen development, to eliminate the inhibition of copper in the conduit By activating the expression of xa13 gene, bacterial blight can regulate the redistribution of copper in rice Xa13 protein and two other proteins copt1 and copt5 work together on the cell membrane to transport the copper out of the cell into the cell, so as to reduce the copper in the conduit, so that bacterial blight can propagate and spread in the conduit, causing rice diseases Understanding the mechanism of how the pathogen invades the plant will help to effectively control crop diseases According to Wang Shiping, bacterial blight caused by bacterial blight is one of the important diseases of rice, which once reduced the global rice production by 70% Understanding the mechanism of bacterial blight on rice will help to design effective ways to cultivate resistant rice varieties.