A Genome-Wide Atlas of Exosome Substrates (IMAGE) Salk Institute Caption The image shows a growth-arrested embryo from a mutant Arabidopsis plant that contains a genetic lesion in a gene encoding an essential part of the exosome. The embryo is overlaid on a genome browser image of tiling expression data from an intergenic region that exhibits strong upregulation of a cluster of novel tandem repeat-associated, exosome-regulated transcripts. Credit Image: Courtesy of Dr. Brian Gregory, Salk Institute for Biological Studies Usage Restrictions News media reproduction to illustrate this story permitted with proper attribution as provided above. For one time use only. 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.