| Abstract Detail
Evolution of Development and Physiology Han, Yuepeng [1], Korban, Schuyler [2]. A novel family of miniature inverted-repeat transposable elements is associated with genes in apple. The apple, Malus × domestica Borkh., belongs to the family Rosaceae and subfamily Maloideae, and has a genome size of ~750 Mb. Here, we report on a novel family of transposable elements, designated Spring, found in the apple genome. Four Spring elements, Spring-1 to Spring-4, share all classic features of miniature inverted-repeat transposable elements (MITEs), including small size (~148 bp), lack of coding potential, A/T richness, insertion bias toward noncoding regions, terminal inverted repeats (TIRs), target site duplications (TSDs), and potential for forming secondary structures. Previous mobility of Spring-4 is demonstrated by sequence alignment of genes encoding 1-aminocyclopropane-1-carboxylic acid (ACC) synthase from both apple and a related member of the Maloideae subfamily, pear. It is observed that Spring elements are flanked by either 7- or 8-bp direct repeats. In addition, these Spring elements in the apple genome significantly differ in size (2- or 3-bp) from those MITEs previously reported in various plant speices. In fact, the TIRs of these Spring elements have not been detected in any other previously reported genes or transposons. Log in to add this item to your schedule
1 - University of Illinois, Department of Natural Resources and Environmental Sciences, 310 Madigan Lab, 1201 W. Gregory, Urbana, Illinois, 61801, USA 2 - University of Illinois, Department of Natural Resources and Environmental Sciences
Keywords: transposable elements MITEs Spring elements.
Presentation Type: Plant Biology Abstract Session: P Location: Exhibit Hall (Northeast, Southwest & Southeast)/Hilton Date: Sunday, July 8th, 2007 Time: 8:00 AM Number: P27014 Abstract ID:1913 |