Fig. 4
From: Hyperacidification of Citrus fruits by a vacuolar proton-pumping P-ATPase complex
Structure and expression of CitAN1 alleles in distinct lemon, orange, and pummelo varieties. Exons are indicated by rectangles with 5’ and 3’ untranslated regions at reduced height. Deleted sequences are indicated with dotted red lines and pink filling and transposon insertions by triangles with different colors. The hooked arrow marks the transcription start. The red dotted hooked arrows in ‘Millsweet’ and Sweet lemon indicate (inferred) reduced transcription caused by reduced activity of an upstream regulator(s). Gene structures confirmed by sequencing are depicted as dark gray lines (introns and flanking DNA), filled rectangles (exons), or filled triangles (transposon insertion). Gene structures inferred from polymerase chain reaction alone are marked by gray lines and white filling
