Scientist Pleads Guilty to Smuggling Deadly Fungus into US, But What's the Big Deal?
A Chinese plant scientist has pleaded guilty to smuggling a deadly fungus into the United States. Fusarium graminearum is a fungal disease that causes problems for farmers across the country. It creates a disease in barley and wheat called Fusarium head blight or scab.
The fungus can damage rice and rot corn ears and stalks, with severe cases potentially cutting a farm's yield by 45%. Scab has been responsible for some of the greatest annual crop losses in the US. In 2024, estimates suggested that scab reduced the US wheat crop by approximately 31 million bushels or roughly 2%.
Fusarium graminearum produces a mycotoxin in grain that can harm humans and livestock. The fungus also makes seeds less likely to germinate and produce new plants in the next growing season.
The law regulates the movement of plant pathogens within the US, including bacteria, fungi, and viruses, even for research purposes. A scientist who wants to move a plant pathogen must go through a permitting process with the USDA-APHIS that can take up to six months to complete.
While Fusarium graminearum is not new to American farmers, its risk to grains such as wheat, corn, and rice can be alarming. The US Department of Agriculture estimates it costs wheat and barley farmers more than $1 billion a year.
To manage Fusarium graminearum infections, farmers can spray fungicides onto developing wheat heads when they're most susceptible to infection. Planting barley or wheat varieties that are resistant to scab is also an ideal approach. Rotating crops and tilling the soil after harvest can reduce residue where the fungus can survive the winter.
Despite these measures, fungicide applications may not offer complete protection against scab. In areas where environmental conditions are conducive for scab, with ample moisture and humidity during flowering, the disease will still occur, albeit at reduced levels.
As plant pathologists develop early warning systems for farmers, a computer model is being developed to predict the risk of scab. The wheat disease predictive model uses historic and current environmental data from weather stations throughout the US, along with current conditions, to develop a forecast.
The introduction of new genetic material into the environment that may exist in other countries but not the US and could have harmful consequences for crops is also a concern.
A Chinese plant scientist has pleaded guilty to smuggling a deadly fungus into the United States. Fusarium graminearum is a fungal disease that causes problems for farmers across the country. It creates a disease in barley and wheat called Fusarium head blight or scab.
The fungus can damage rice and rot corn ears and stalks, with severe cases potentially cutting a farm's yield by 45%. Scab has been responsible for some of the greatest annual crop losses in the US. In 2024, estimates suggested that scab reduced the US wheat crop by approximately 31 million bushels or roughly 2%.
Fusarium graminearum produces a mycotoxin in grain that can harm humans and livestock. The fungus also makes seeds less likely to germinate and produce new plants in the next growing season.
The law regulates the movement of plant pathogens within the US, including bacteria, fungi, and viruses, even for research purposes. A scientist who wants to move a plant pathogen must go through a permitting process with the USDA-APHIS that can take up to six months to complete.
While Fusarium graminearum is not new to American farmers, its risk to grains such as wheat, corn, and rice can be alarming. The US Department of Agriculture estimates it costs wheat and barley farmers more than $1 billion a year.
To manage Fusarium graminearum infections, farmers can spray fungicides onto developing wheat heads when they're most susceptible to infection. Planting barley or wheat varieties that are resistant to scab is also an ideal approach. Rotating crops and tilling the soil after harvest can reduce residue where the fungus can survive the winter.
Despite these measures, fungicide applications may not offer complete protection against scab. In areas where environmental conditions are conducive for scab, with ample moisture and humidity during flowering, the disease will still occur, albeit at reduced levels.
As plant pathologists develop early warning systems for farmers, a computer model is being developed to predict the risk of scab. The wheat disease predictive model uses historic and current environmental data from weather stations throughout the US, along with current conditions, to develop a forecast.
The introduction of new genetic material into the environment that may exist in other countries but not the US and could have harmful consequences for crops is also a concern.