Map-based cloning of the bacterial spot resistance gene
Bs2 from pepper. (A) Contig of the three
ECW-123R pepper library YAC clones (YCA80H11, YCA22D8, and YCA92F5)
that span the Bs2 locus. (B) Contig of
cosmid clones (C17-C22) that span the Bs2 region from
the YAC contig. This region was sequenced. Arrows show ORFs and
direction of transcription for Bs2,
Prlk1, Tam (homologous to transposon
TAM), and Ret (homologous to retrotransposons). (C)
Bs2 transcript before splicing. (D)
Bs2 ORF with deletion of untranslated upstream sequences
and 27-kb intron that was used in 35S:Bs2 promoter
constructs.