- proteins. All
plastids are
derived from
proplastids,
which are
present in the
meristematic regions of the plant.
Proplastids and
young chloroplasts typically...
-
directly from
proplastids or etioplasts. In fact, a
typical shoot meristematic plant cell
contains only 7–20
proplastids.
These proplastids differentiate...
- well as all
other plastids,
arise from
proplastids in the
dividing portion of the stem (meristem).
These proplastids have not yet
differentiated and, as...
-
nucleus with
stromules extending to the cell periphery, as
observed for
proplastids in the root meristem. Pre-granal etioplasts,
which are
chloroplasts that...
-
Etioplasts are an
intermediate type of
plastid that
develop from
proplastids that have not been
exposed to light, and
convert into
chloroplasts upon exposure...
-
mature plastids such as
chloroplasts or chromoplasts,
these cells contain proplastids,
which later develop into
fully functional plastids.
Meristematic tissues...
-
proplastids when
seedlings emerge from the ground.
Thylakoid formation requires light. In the
plant embryo and in the
absence of light,
proplastids develop...
-
structures extending from the
surface of all
plastid types,
including proplastids, chloroplasts, etioplasts, leucoplasts, amyloplasts, and chromoplasts...
- of
development where the
chloroplasts are in the form of
indistinct proplastids, are much
higher than
those present when that cell
matures and expands...
-
chloroplasts to the
greatest extent during the light-induced
development from
proplastid to
chloroplast or
etioplast to chloroplast. At
these times, the synthesis...
