Casuarina on La Reunion Island (IMAGE) University of New Hampshire Caption University of New Hampshire microbiologist Louis Tisa has received two grants totaling $498,115 to explore the symbiotic relationship between the bacteria Frankia and Casuarina, an actinorhizal plant. Credit Y. Dommergues 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.