A novel gene (abg1) was isolated by differential display RT-PCR from guard
cells of Vicia faba L. Abg1 transcript accumulated in guard cells that were
incubated with 5 CIM S(+)-ABA for 1 h. The full-length abg1 cDNA was 753 b
p, which included a 513 bp coding region. The deduced 17.8 kDa protein shar
ed sequence similarity with several desiccation-related proteins reported i
n plants.