Pollen from the Arabidopsis plant (IMAGE) Cold Spring Harbor Laboratory Caption CSHL Professor Rob Martienssen and former postdoc Rowan P. Herridge found that pollen from the Arabidopsis plant (as seen above) is loaded with a molecule called pseudouridine. Credit Martienssen lab/Cold Spring Harbor Laboratory Usage Restrictions Attribution required License Original 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.