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Glyoxisomes

Glyoxisomes

Introduction

  • These are found only in plant cells and absent in animal cells.
  • These are most abundant in plant seedlings.
  • They appear for only short period of time during germination of the lipid-rich seed such as castor oil, bean and soyabean and are absent in lipid-poor seed such as the pea.

Composition

These are single membranous organelle, which in addition to glycolic acid oxidase and catalase, also possess a number of enzymes that are not found in animal cells.

Function


  • In plants, they play important role in both catabolic and anabolic activities.
  • In germinating seedlings, enzymes of glyoxisome are important in conversion of stored fatty acids to carbohydrates especially succinate through a cycle called glyoxylate cycle.

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