amyloplast

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amyloplast

(ăm`əlōplăst'), also called leucoplast, a nonpigmented organelle, or plastid, occurring in the cytoplasm of plant cells. Amyloplasts transform glucose, a simple sugar, into starch through the process of polymerization, and store starch grains within their stretched membranes. Especially large numbers occur in subterranean storage tissues of some plants, such as the common potato.
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amyloplast

[′am·ə·lō‚plast]
(botany)
A colorless cell plastid packed with starch grains and occurring in cells of plant storage tissue.
McGraw-Hill Dictionary of Scientific & Technical Terms, 6E, Copyright © 2003 by The McGraw-Hill Companies, Inc.
References in periodicals archive ?
The vegetative cell cytoplasm is very dense, filled with numerous small vesicles, mitochondria, lipidic globules, amyloplasts and ERr with extended cisternae.
Real honey contains pollen grains but no amyloplasts. Pollen grains are beautiful and easily visible unstained under 100x magnification.
Physiological stress expressed by salinity during this period reduces the storage capacity of cereal kernels by decreasing the number of endosperm cells and/or the number of amyloplasts initiated (Jones et al., 1996).
In differentiated cells, plastids can be involved in anabolism (chloroplasts) or in storing reserves in amyloplasts and elaioplasts (Wheatley, 1977).
In higher plants, much evidence suggests that amyloplasts function as statoliths (Kiss et al., 1989, 1996).
In addition, at 4[degrees]C amyloplasts sedimented normally in the gps mutants, indicating that the GPS loci affect an aspect of the gravity signal perception/transduction pathway that occurs after amyloplast sedimentation (perception).
In plants, sedimentable amyloplasts have been conceived of, since the turn of the century, as potential statoliths (Haberlandt, 1900; Nemec, 1900).
Numerous plastids containing starch (amyloplasts) were abundant throughout the cytosol; many mitochondria were also present in these cells.
These VSPs are localized primarily in vacuoles, with smaller amounts associated with amyloplasts (Avice et al., 1996b).