Puccinia striiformis var. dactylis

例句：

1. 1. This is a unique species of fungus that grows on the surface of grapevine leaves.
   这是一种独特的真菌，生长在葡萄藤叶子的表面。
2. 2. The study of this fungus has led to important discoveries in plant science.
   对这种真菌的研究导致了植物科学的一些重要发现。
3. 3. The research team focused on identifying the genetic differences between Puccinia striiformis and its dactylis variant.
   研究小组专注于识别穗花菌属与其变种之间的遗传差异。