<i>Serianthes nelsonii</i> Seedling (IMAGE) University of Guam Caption A newly emerged Serianthes nelsonii seedling preferentially uses nighttime for root extension, with 72 percent of the daily root extension occurring during the dark. Credit Thomas Marler 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.