In the developing endosperm of monocotyledonous plants, starch granules are synthesized and deposited within the amyloplast. A soluble stromal fraction was isolated from amyloplasts of immature maize ...
The Plant Cell, Vol. 23, No. 5 (MAY 2011), pp. 1830-1848 (19 pages) Higher plants use the sedimentation of amyloplasts in statocytes as statolith to sense the direction of gravity during gravitropism.