The invention relates to the technical field of
gene engineering, and particularly discloses application of a pathogenic
gene FpMetR for controlling
stem rot pathogenic bacteria Fusarium pseudograminearum, specifically, the
colony morphology of a
deletion mutant strain of the FpMetR
gene is changed, the sporulation quantity is reduced, the
spore germination rate is reduced, and the
pathogenicity of the
mutant strain is completely lost, the
DNA sequence of the FpMetR gene is as shown in SEQ ID No: 1, and the
DNA sequence of the FpMetR gene is as shown in SEQ ID No: 2. According to the invention, the pathogenic mechanism is clarified: a scientific basis is provided for deeply understanding the pathogenic mechanism of
pathogenic bacteria by revealing the key effect of the FpMetR gene in the pathogenic process of the
fusarium pseudograminearum, and a new thought and a
target gene are provided for the field of
plant anti-
fusarium pseudograminearum
genetic engineering by virtue of the effect of the FpMetR gene in the aspects of regulating and controlling the growth and
pathogenicity of wheat. By applying the gene or a regulation mechanism thereof to genetic improvement of crops such as wheat, new varieties with
disease resistance are expected to be cultivated, dependence on chemical pesticides is reduced, and environmental friendliness is improved.