Cultured Leaf Microbiome (IMAGE) University of California - Berkeley Caption A representative agar plate illustrating the great diversity of bacteria that colonize tomato leaves in an agricultural field. Each spot is a growing colony of bacteria that was washed off a tomato leaf. Credit Elijah Mehlferber photo, Koskella lab, UC Berkeley Usage Restrictions None License Licensed 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.