Slices of Citrus Fruit (IMAGE) DOE/Joint Genome Institute Caption The image is composed of slices of various citrus fruit. Citrus is the world's most widely cultivated fruit crop but it is under attack from citrus greening, an insidious emerging infectious disease that is destroying entire orchards. Credit Roy Kaltschmidt, LBNL 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.