Iodine staining of starch of 6-d-old wild-type
and pet1-1 seedlings grown under continuous dim light in
the presence of 1% Suc. A, Wild type (left) and pet1-1
(right). B and C, Magnified hypocotyl cells of wild-type and
pet1-1 seedlings, respectively. Note the intensive
staining of starch granules of pet1-1. Scale bars: A, 1
cm; B, 100 μm.