Tropical Forest Canopy, Panama (2 of 2) (IMAGE) Smithsonian Tropical Research Institute Caption Bacteria on leaves in tropical forests may play a vital role, protecting leaves against pathogens and even affecting the ability of forests to respond to climate change. Credit Beth King, STRI Usage Restrictions Credit STRI 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.