The gene required for the plant pathogenic and mycotoxin producing fungus to spread in the host

镰刀菌头枯病真菌是一种植物病原体，在主要谷物中引起真菌毒素污染。通过连锁分析，将该突变体定位于第2染色体54Kb处，该区域缺失了3Kb。克隆了野生型菌株3Kb内的FGSG 0 2810基因，并通过转化将其导入突变体。引入FGSG02810基因恢复了突变体的致病性。这些结果表明，FGSG 02810基因是赤霉病菌在寄主植物中传播的必需基因。

Fusarium head blight fungus is a plant pathogen that causes mycotoxin contamination in major cereals. A natural pathogenicity mutant that could not spread beyond the inoculation point in host was found. The mutation locus was mapped to 54Kb-span in the chromosome 2by linkage analyses and3Kb in this region was deleted in the mutant. The FGSG0 2810 gene within the 3Kb of wild type strain was cloned and introduced into the mutant by transformation. Introduction of the FGSG02810 gene restored pathogenicity of the mutant. These results indicate that FGSG02810 is an essential gene for Fusarium head blight fungus to spread in the host plant.