What are the Structure and Composition of Algal Cell Wall?

Algal cell wall surfaces are made up of a varied selection of fibrillar, matrix and also crystalline polymers communicating with different ions and even water. What the diverse variety of cell wall surfaces showed in the different algal teams is an indication of old transformative beginnings and also the eco-friendly stress of contemporary planet environments. The algal Cell wall surfaces frequently stand for the leading element of the extracellular matrix and even stand for the biggest or a considerable percent of the photosynthetically set carbon of the algae. Wall surfaces are generally coarse compounds of micro-fibrillar polysaccharides installed in matrix polysaccharides and also proteoglycans. The extracellular polymeric compounds might additionally comprise the algal extracellular matrix. The manufacturing of the cell wall surfaces calls for the remarkably collaborated communication of numerous subcellular systems and also is regulating by facility genetics expression programs.

algal cell wall

Basic Structure of Algal Cell Walls


Like plants, algae have cell walls. Algal cell walls contain either polysaccharides (such as cellulose (a glucan)) or a variety of glycoproteins (Volvocales) or both. The inclusion of additional polysaccharides in algal cells walls is using as a feature for algal taxonomy.

  • Mannans: They form microfibrils in the cell walls of some marine green algae including those from the genera, Codium, Dasycladus, and Acetabularia as well as in the walls of some red algae, like Porphyra and Bangia.
  • Xylans: Xylans are a diverse group of polysaccharides formed from xylose residues linked by β-(1,4) glycosidic bonds and bearing side chains of 4-O-methyl glucuronic acid.
  • Alginic acid: It is a common polysaccharide in the cell walls of brown algae.
  • Sulfonated polysaccharides: They occur in the cell walls of most algae; those familiar in red algae include agarose, carrageenan, porphyrin, furcelleran, and funoran.

Other compounds that may accumulate in algal cell walls include sporopollenin and calcium ions.

Modern innovations utilized from immunology, molecular genes, biochemistry and biology and also microscopy‐based imaging is changing our understanding of the cell framework, growth, and its features.

Key Points:

  • Algae stand for a different team of photosynthetic eukaryotes with a variety of algal cell wall surface types.
  • Innovations originated from immunology, microscopy‐based imaging, and molecular genes and also biochemistry and biology are substantially improving our understanding of algal cell wall surfaces.
  • Primitive environment-friendly algae of the Prasinophyceae generate layers of multi-shaped ranges.
  • The Charophycean environment-friendly algae generate cell wall surfaces consisting of polymers just like land plants.
  • The red algae have complex composite cell wall surfaces constructed from cellulose, xylan or mannan fibrils and also substantial matrix polysaccharides consisting of the financially essential carrageenan and even agar.
  • Diatoms generate incredibly toned frustules constructed from silica‐based compounds and also frequently create substantial stalks and even various other extracellular polymeric compounds.
  • Brownish algae generate cell wall surfaces consisting of cellulose, matrix polysaccharides and also sometimes, phenolics.

The group of algae known as the diatoms synthesizes their cell walls (also known as frustules or valves) from silicic acid (specifically orthosilicic acid, H4SiO4). The acid is polymerized intra-cellularly, then the wall is extruded to protect the cell. Significantly, relative to the organic cell walls produced by other groups, silica frustules require less energy to synthesize (approximately 8%), potentially a significant saving on the overall cell energy budget and possibly an explanation for higher growth rates in diatoms.

If you liked this article, then please subscribe to our YouTube Channel for Life Science video lectures. You can also find us on Twitter and Facebook.

Click Here to Leave a Comment Below 0 comments

Leave a Reply: