Science Image (image) Salk Institute Share Print E-Mail Caption Left: Normal Arabidopsis thaliana plant with shallow root system architecture. Right: Arabidopsis thaliana variant showing deeper root system architecture. (Roots are colored yellow in the image for better visibility.) Credit Salk Institute Usage Restrictions with credit and related coverage. Share Print E-Mail 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.