amyloplast


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Related to amyloplast: Elaioplast

am·y·lo·plast

(am'i-lō-plast),
A granule in the protoplasm of a plant cell that is the center of a starch-forming process and starch storage.
Synonym(s): amylogenic body
[amylo- + G. plastos, formed]

amyloplast

a type of cell inclusion found in many plant tissues, particularly storage organs such as the potato tuber. Amyloplasts contain starch enclosed in a UNIT MEMBRANE, the whole structure being a type of LEUCOPLAST. Besides serving as a starch store, amyloplasts are thought by some scientists to function also as a gravity-seeking device, helping the roots to push through the soil in the correct direction (see GEOTROPISM).

amyloplast

a starch-forming leuko-plastid in a plant.
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References in periodicals archive ?
Phytochromes inhibit hypocotyl negative gravitropism by regulating the development of endodermal amyloplasts through phytochrome-interacting factors.
In differentiated cells, plastids can be involved in anabolism (chloroplasts) or in storing reserves in amyloplasts and elaioplasts (Wheatley, 1977).
With respect to plastids, ripe pollen grains can be divided into two categories: with amyloplasts and with proplastids.
However, in some species amyloplasts are still able to divide during late pollen maturation, even though the pollen mitosis (es) is (are) achieved, This occurs when vegetative cell plastids of Lolium perenne or Lilium pollen store a starch grain at one pole and this is successively pinched off (Pacini et al.
Inside the vegetative cell cytoplasm there can be found extensive cisterns of the ERr, numerous mitochondria and abundant amyloplasts.
Amyloplasts are evident after staining with Lugol's.
Amyloplasts in the starch-treated samples will be evident with Lugol's solution or with crossed Polaroids.
Below the epidermis there are four to five layers of sclerenchyma followed by parenchyma with some amyloplasts.