Dictionary > Chromoplast

Chromoplast

Definition
noun, plural: chromoplasts
Any of the coloured plastids associated with pigment synthesis and storage
Supplement
Plastids are organelles involved in the synthesis and storage of food. They are found within the cells of photosynthetic eukaryotes. In plants, plastids may develop into these forms: (1) chloroplasts, (2) chromoplasts, (3) gerontoplasts, and (4) leucoplasts. Certain plastids have the ability to differentiate from one form to another. An example of it is the chloroplasts re-differentiating into chromoplasts during the ripening of a fruit.
Chromoplasts are plastids that are coloured due to the pigments that are produced and stored inside them. They are found in fruits, flowers, roots, and senescent leaves. The colour of these plant organs is associated with the presence of pigments, apart from chlorophyll.
Chromoplasts vary in structural appearance under an electron microscope. They may generally be grouped into five types: (1) globular, (2) crystalline, (3) fibrillar, (4) tubular, and (5) membranous.1 Nevertheless, some chromoplasts may be harder to classify when their structure is rather complicated, such as those of tomatoes that appear both membranous and crystalline in appearance.
Chloroplasts are sometimes regarded as a subgroup of chromoplasts just so to differentiate them from the colourless plastids, the leucoplasts. However, chloroplasts are made distinct from chromoplasts because they are associated mainly in photosynthesis and not in producing and storing pigments.
Synonym(s):

  • chromoplastid
  • chromoleucite

See also:

  • plastid
  • chloroplast
  • leucoplast
  • accessory pigment
  • photosynthesis
  • Reference(s):

    1 Camara, B., Hugueney, P., Bouvier, F., Kuntz, M., & Monéger, R. (1995). “Biochemistry and molecular biology of chromoplast development”. Int. Rev. Cytol. 163: 175–247.


    You will also like...

    squirrel
    Animal Water Regulation

    Animals adapt to their environment in aspects of anatomy, physiology, and behavior. This tutorial will help you understa..

    Plant Water Regulation
    Plant Water Regulation

    Plants need to regulate water in order to stay upright and structurally stable. Find out the different evolutionary adap..

    Water Cycle
    The Water Cycle

    The water cycle (also referred to as the hydrological cycle) is a system of continuous transfer of water from the air, s..

    Adaptation Tutorial
    Adaptation Tutorial

    Adaptation, in biology and ecology, refers to the process or trait through which organisms or the populations in a habit..

    Plant biology
    Plant Biology

    Plantlife can be studied at a variety of levels, from the molecular, genetic and biochemical level through organelles, c..

    Early Earth
    The Origins of Life

    This tutorial digs into the past to investigate the origins of life. The section is split into geological periods in the..

    Related Articles...

    No related articles found

    See all Related Topics