In grape berries, VAIV participates actively in hexose
accumulation (Davis and Robinson, 1996). The
expressions of the VAIV genes GIN1 and GIN2 were
high in young fruit, then decreased but remained constant
in the mature stage. The expression of the genes and
enzyme synthesis occurred several weeks before the
onset of hexose accumulation. AIV in papaya fruit is
more important than SuSy or SPS for fruit maturation
because the mRNA of AIV increases with fruit
maturation (Zhou and Quebedeaux, 2003; Zhou et al.,
2000). AIV in strawberry fruit participates actively in
hexose accumulation. VAIV activity increased together