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The plant Golgi apparatus

P Dupree¹, D J Sherrier

¹University of Cambridge, Department of Biochemistry, Tennis Court Road, Cambridge CB2 1QW, UK. p.dupree@bioc.cam.ac.uk

Biochimica Et Biophysica Acta

|August 26, 1998

Summary

The plant Golgi apparatus is crucial for protein modification and cell wall synthesis. Its unique structure facilitates polysaccharide production and protein sorting in plant cells.

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Area of Science:

Plant Cell Biology
Molecular Plant Biology

Background:

The plant Golgi apparatus is vital for protein glycosylation, sorting, and cell wall polysaccharide biosynthesis.
Its organization into dispersed stacks of cisternae reflects its role in synthesizing large quantities of polysaccharides.

Purpose of the Study:

To highlight unique aspects of plant Golgi apparatus organization and function.
To discuss the compartmentalization of glycosyltransferases and vesicle budding for protein sorting.

Main Methods:

Microscopy studies to visualize Golgi structure.
Biochemical fractionation to analyze enzyme distribution within Golgi stacks.

Main Results:

Plant Golgi stacks exhibit polarity from cis to trans, with increasing polysaccharide content.
Glycosyltransferases are compartmentalized within the Golgi stack.
The trans-Golgi network sorts vacuolar from secreted proteins and polysaccharides via vesicle budding.

Conclusions:

Plant Golgi apparatus possesses specialized features important for plant cell biology.
Understanding plant Golgi organization offers insights into fundamental Golgi processes across organisms.

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