Petri Dish (IMAGE) University of California - Riverside Caption These are microbes cultured from the leaf microbiota of a Valencia orange tree. The researchers are working towards harnessing the chemistry that these microbes produce to develop novel antimicrobials against the causal agent of huanglongbing. Credit UC Riverside 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.