ncRNA Candidates in Mature Plastids.
(A) cDNA reads of green (G+/−) libraries mapped onto the petB exon 1. The detected processed 5′ end of petB is indicated by a red arrowhead and the TSS of the petB antisense transcript, as_petB (Hv_nc40), is marked by a black arrow. The direction of transcription is indicated by black arrowheads on the DNA strands. The as_petB RNA is complementary to the intron binding sites 1 and 2 of the petB intron (group II intron).
(B) dRNA-seq reveals an ncRNA (Hv_nc50) in the intergenic region between trnL-CAA and trnI-CAU in both green and white plastids. The detected oTSSs are indicated by black arrows.