Dictionary > Promastigote

Promastigote

Definition
noun, plural: promastigotes
(protistology) The developmental stage or the morphological form in the lifecycle of trypanosomatids characterized by the presence of the flagellum that is located anterior of the nucleus and free from the cell body
Supplement
A group of kinetoplastid protozoa is called trypanosomatids. This group is known for their different morphological forms throughout their life cycle. These morphological forms or stages in their life cycle are the following: (1) amastigote, (2) promastigote, (3) epimastigote, (4) trypomastigote, (5) opisthomastigote, and (6) choanomastigote. The promastigote stage is that in which the trypanosomatids possess a flagellar locomotory structure that is located anterior of the nucleus and is free from the cell body. It is therefore the flagellate stage of trypanosomatid protozoans.
The promastigote stage is formerly called the leptomonad (stage). However, since the latter term causes confusion with the species belonging to the genus Leptomonas the term promastigote is preferred. The reason for being called a leptomonad stage because this form is commonly found in the genus Leptomonas. The promastigote term is derived from the Greek word mastig which means whip referring to the flagellum).
Synonym(s):

  • leptomonad (stage)

Compare:

  • amastigote
  • epimastigote
  • trypomastigote
  • opisthomastigote
  • choanomastigote
  • See also:

    Mentioned in:

  • Herpetomonas
  • Choanoflagellate
  • Choanomastigote


    You will also like...

    Human gastrointestinal tract
    Human Biology – Food and Digestion

    This tutorial recognizes the importance of food as a source of energy that will fuel many biological processes. A good d..

    Genetic Mutations
    Chromosome Mutations – II

    This tutorial is a continuation of the first lesson on chromosomal mutation. Here, find out the chromosomal aberrations ..

    Oligodendrocyte and Schwann cell
    The Central Nervous System

    Myelin sheath is essential for a faster conductivity of signals. Know more about this feature of some neurons in the Cen..

    Human Reproduction
    Human Reproduction

    Humans are capable of only one mode of reproduction, i.e. sexual reproduction. Haploid sex cells (gametes) are produced ..

    Lotic community of algal species
    Lotic Communities & Algae

    Lotic communities have conditions that are rather harsh for typical plants. Thus, the diversity of plant species in loti..

    bryophyte - sporophyte and gametophyte
    Meiosis and Alternation of Generations

    Plants are characterized by having alternation of generations in their life cycles. This tutorial is a review of plant m..