Write down the types of leucoplast plastids
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Leucoplasts are classified into three groups: amyloplasts (which
store starch), elaiplasts or oleoplasts (store lipids), and
proteinoplasts (store proteins).
Amyloplast
Amyloplasts are responsible for storing starch, which is a nutritive
polysaccharide found in plant cells, protists and some bacteria.
It is usually in the form of visible granules under a microscope.
Plastids are the only way by which plants synthesize starch and it is
also the only place where it is contained.
The amyloplasts undergo a process of differentiation: they are
modified to store starches product of the hydrolysis. It is in all
plant cells and its main function is to carry out amylolysis and
phosphorolysis (starch catabolism pathways).
There are specialized amyloplasts of the radial coffer (corbertura
surrounding the apex of the root), which function as gravimetric sensors
and direct the growth of the root to the ground.
Amyloplasts have considerable amounts of starch. Because their
grains are dense, they interact with the cytoskeleton causing the
meristematic cells to fracture perpendicularly.
Amyloplasts are the most important of all leucoplasts and differentiate from each other by their size.
Oleoplastos
Oleoplastos or elaiplastos, are responsible for the storage of oils
and lipids. Its size is small and has many small drops of fat inside.
They are present in epidermal cells of some cryptogams and in some
monocotyledons and dicotyledons that lack the accumulation of starch in
the seed. They are also known as lipoplasts.
The endoplasmic reticulum, known as the eukaryotic pathway and the
elaioplasts or via the prokaryote, are the pathways of lipid synthesis.
The latter also participates in pollen maturation.
Other types of plants also store lipids in an organelle called elaiosomes that derive from the endoplasmic reticulum.
Proteinoplast
Proteinoplasts have a high level of protein that is synthesized in crystals or as amorphous material.
These types of plastids store proteins that accumulate as
crystalline or amorphous inclusions within the organelle and are usually
bounded by membranes. They may be present in different cell types and
also vary the type of protein it contains depending on the tissue.
Studies have found the presence of enzymes such as peroxidases,
polyphenol oxidases, as well as some lipoproteins, as the major
constituents of the proteinoplasts.
These proteins can function as a reserve material in the formation
of new membranes during the development of the plastid; However, there
is some evidence that these reserves could be used for other purposes
Leucoplasts are classified into three groups: amyloplasts (which
store starch), elaiplasts or oleoplasts (store lipids), and
proteinoplasts (store proteins).
Amyloplast
Amyloplasts are responsible for storing starch, which is a nutritive
polysaccharide found in plant cells, protists and some bacteria.
It is usually in the form of visible granules under a microscope.
Plastids are the only way by which plants synthesize starch and it is
also the only place where it is contained.
The amyloplasts undergo a process of differentiation: they are
modified to store starches product of the hydrolysis. It is in all
plant cells and its main function is to carry out amylolysis and
phosphorolysis (starch catabolism pathways).
There are specialized amyloplasts of the radial coffer (corbertura
surrounding the apex of the root), which function as gravimetric sensors
and direct the growth of the root to the ground.
Amyloplasts have considerable amounts of starch. Because their
grains are dense, they interact with the cytoskeleton causing the
meristematic cells to fracture perpendicularly.
Amyloplasts are the most important of all leucoplasts and differentiate from each other by their size.
Oleoplastos
Oleoplastos or elaiplastos, are responsible for the storage of oils
and lipids. Its size is small and has many small drops of fat inside.
They are present in epidermal cells of some cryptogams and in some
monocotyledons and dicotyledons that lack the accumulation of starch in
the seed. They are also known as lipoplasts.
The endoplasmic reticulum, known as the eukaryotic pathway and the
elaioplasts or via the prokaryote, are the pathways of lipid synthesis.
The latter also participates in pollen maturation.
Other types of plants also store lipids in an organelle called elaiosomes that derive from the endoplasmic reticulum.
Proteinoplast
Proteinoplasts have a high level of protein that is synthesized in crystals or as amorphous material.
These types of plastids store proteins that accumulate as
crystalline or amorphous inclusions within the organelle and are usually
bounded by membranes. They may be present in different cell types and
also vary the type of protein it contains depending on the tissue.
Studies have found the presence of enzymes such as peroxidases,
polyphenol oxidases, as well as some lipoproteins, as the major
constituents of the proteinoplasts.
These proteins can function as a reserve material in the formation
of new membranes during the development of the plastid; However, there
is some evidence that these reserves could be used for other purposes
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amyloplast,elaioplast,aleuroplast or proteoplast
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