A second gene mapped to the candidate region
(ORF4, OsRab5a/gpa1) encodes a protein associated
with the transport of GTPase and the synthesis and
processing of gluten. However, the DNA sequences of
ORF4 and ORF10 have no difference between the WT
and flo7 (data not shown), so which ORF is the
candidate gene of flo7 has to be further studied. This
study would help to further understand the regulation
mechanism of starch synthesis and metabolism, and