Planomonospora (image) Norwich BioScience Institutes Caption The antibiotic planosporicin is produced by a soil bacterium called Planomonospora alba. Credit John Innes Centre Usage Restrictions Please credit the John Innes Centre. 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.