Researchers in China discovered that a fungus called Colletotrichum kahawae is causing a serious disease called anthracnose on buckwheat crops in Yunnan Province. This is the first time this particular fungus has been identified on buckwheat in China. Scientists studied how the fungus grows and found it prefers temperatures around 25°C and neutral pH levels. The fungus can also infect other important crops like wheat, corn, potatoes, and oats, which could pose a significant threat to agriculture in the region.