DNA of sorghum BAC clone 52A4 was digested with
restriction enzymes DraI (lane 1), SalI
(lane 2), Sau3AI (lane 3), AccI (lane 4),
and HindIII (lane 5). The same blot was probed with
genomic DNA from wheat, maize, and rice, respectively. A 745
Sau3AI fragment (arrow) hybridized to the genomic DNA
from all the three species. This fragment was subcloned as plasmid
pSau3A9.