Figure 6.

Maps of Structures of the Ruby Locus in the Different Citrus Species, Orange Accessions, and Hybrids.

Thick green arrows, retrotransposon LTRs; thick gray bars, open reading frame encoding functional Gag-Pol polyprotein; thick purple bars, open reading frame encoding the Ruby protein; thin bars, noncoding regions. The asterisk indicates a stop codon. The differences in sequence between Tcs1 and Tcs2 are indicated by blue lines on the map of Tcs2. The start of transcription of the Ruby mRNA is shown by a gray arrow for each accession. The AseI sites (AseI does not cut in either Tcs1 or Tcs2) in the Ruby locus are also shown. Moro (I) indicates the accession of Moro from CRA, Sicily, and Moro (UK) indicates the accession of Moro from Reeds, UK.