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POLYMORPHISM IN MASTOGLOIA(1).

E F Stoermer1

  • 1Great Lakes Research Division. The University of Michigan. Ann Arbor. Michigan 48104.

Journal of Phycology
|April 12, 2016
PubMed
Summary

Diatom cells in the Mastogloia genus can change frustule morphology during their life cycle. This rapid transformation between coarse and fine structures occurs in a single cell division, demonstrating significant cellular plasticity.

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Area of Science:

  • * Diatom cell biology
  • * Microscopic morphology
  • * Evolutionary biology

Background:

  • * Mastogloia diatoms exhibit complex frustule structures.
  • * Vegetative cell division is a key process in diatom life cycles.
  • * Morphological variation within species can be influenced by environmental factors.

Purpose of the Study:

  • * To investigate the morphological plasticity of Mastogloia diatom frustules.
  • * To document the transformation process between different frustule types.
  • * To confirm the ability of these cells to alter their structure within a single division.

Main Methods:

  • * Observation of wild populations of Mastogloia diatoms.
  • * Microscopic analysis of diatom frustules.
  • * Examination of cell division events and resulting daughter cells.

Main Results:

  • * Mastogloia cells can produce two distinct frustule morphologic types.
  • * Complete transition from coarse to fine structure occurs within one division.
  • * No intermediate forms were observed, indicating a rapid and complete change.
  • * Frustules with one valve of each type provide evidence of this transformation.

Conclusions:

  • * Mastogloia diatoms possess a remarkable capacity for rapid morphological change.
  • * This cellular plasticity allows for significant alterations in frustule structure during vegetative reproduction.
  • * The observed phenomenon highlights the dynamic nature of diatom morphology.

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