Researchers in Mexico and Canada (IMAGE) American Phytopathological Society Caption Left panel: Legnara with colleagues and growers from Tlaxcala, Mexico collecting soil samples. Right panel: Pérez-López in a canola field in Quebec, Canada. Credit The authors Usage Restrictions Publish with article License Original content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.