Figure 4.
Examples of pollen-specific APA genes in rice. (Triangles) The locations of MPSS-DGE or SBS-DGE tags. (Arrowheads) The poly(A) sites from the full-length cDNA library. (A) LOC_OS02G02980, encoding a homolog of Arabidopsis EDS5, is regulated by small RNA and APA. The empty triangle in 3′-UTR indicates a small RNA target. (B) Structure of LOC_OS01G51754, an alpha-amylase precursor. (Empty boxes) Introns; (solid boxes) exons. Two pointed gray bars above the gene indicate two functional domains identified by Pfam search as the catalytic domain of alpha-amylase (longer bar) and the alpha-amylase C-terminal beta-sheet domain (shorter bar), respectively.
