Pyrenoids Definition Structure and Function

  • Distinct, rounded, proteinaceous bodies
  • It consists of a central, viscous granular proteinaceous core surrounded by tightly packed minute plates of starch.
  • Thylakoid system pass through pyrenoidpyrenoid
  • Site of starch formation.
  • During starvation, the size of pyrenoids diminishes and finally disappears later reappear on return of favorable condition.
  • Some considered as reserve proteins.
  • Some considered as specific organ of cell.
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