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Difference Between Actinomycetes and Fungi

July 29, 2017 Posted by Dr.Samanthi

Key Difference – Actinomycetes vs Fungi
 

Microorganisms are tiny organisms which cannot be seen by our naked eyes. There are several groups of microorganisms. Bacteria and fungi are significant among them. Most bacteria and fungi are beneficial while a small percentage causes diseases and other harmful effects. Fungi play various crucial roles in the environment. They the dominant decomposers of organic wastes and are involved in recycling of nutrients in all terrestrial habitats. Fungi are able to break down complex material such as cellulose and lignin and help other organisms to absorb nutrients. Actinomycetes are a group of bacteria which are gram positive and behave like fungi. They are beneficial in agriculture and soil systems. Actinomycetes grow as colonies which resemble mycelia of fungi. The key difference between actinomycetes and fungi is that Actinomycetes are prokaryotic organisms while fungi are eukaryotic organisms.

CONTENTS

1. Overview and Key Difference
2. What are Actinomycetes
3. What are Fungi
4. Similarities Between Actinomycetes and Fungi
5. Side by Side Comparison – Actinomycetes vs Fungi in Tabular Form
6. Summary

What are Actinomycetes?

Actinomycetes are a phylum of gram positive bacteria. They are prokaryotic organisms with a primitive unicellular organization. Actinomycetes are anaerobic microorganisms. They show filamentous and branching growth pattern on solid substrates resembling fungi mycelia. Their colonies are extensive like mycelium. Aerial hyphae are found in many genera of actinomycetes. Some actinomycetes genera are motile and have flagella. Actinomycetes are responsible for the musty odor ( the smell of freshly ploughed soils) which comes after rain.

Key Difference - Actinomycetes vs Fungi

Figure 01: Actinomycetes

Actinomycetes are found in terrestrial and aquatic environments. The common genera of actinomycetes are Streptomyces, Nocardia, and Micromonospora. Many actinomycetes species can be observed in the soil. Soil bacteria are harmless to animals and plants. They act as good decomposers. Hence they are important in increasing the availability of nutrients for plants. Actinomycetes produce a wide variety of useful secondary metabolites which have potent biological activities, including commercially important antibiotics and immunosuppressive compounds. Some of them are used for manufacturing of commodity chemical, health products, and agrochemicals.

What are Fungi?

Fungi are a group of microorganisms which includes yeast, moulds, mushrooms and filamentous fungi. Fungi can be single celled or multi-celled. They show eukaryotic cellular organization. Fungi are found in almost all habitats. But most of them are found in lands, mainly in soil or on plant material. Fungi are heterotrophs, and they obtain foods by absorbing molecules which were digested using their digestive enzymes. One characteristic feature of fungi is the presence of chitin in their cell walls. Chitin is unique to fungi.

Fungi are economically and ecologically important microorganisms. They break down dead plant and animal materials and help to recycle them. They are the principal decomposers in the soil. Some fungi maintain symbiotic relationships with plants and support plants in the absorption of essential nutrients. Several fungal species produce numerous drugs, including penicillin and other antibiotics. Some fungi like mushrooms are edible; fungi is also indispensable in the production of bread, champagne, and beer.

Difference Between Actinomycetes and Fungi

Figure 02: Fungi

Fungi cause a number of plant and animal diseases. In humans, several diseases such as athlete’s foot ringworm, thrush, and other diseases are caused by fungi. Plant fungal diseases include rusts, smuts, leaf, stem and root rots.

What are the Similarities Between Actinomycetes and Fungi?

  • Actinomycetes and fungi are filamentous.
  • Both produce spores.
  • Both types are good decomposers.
  • Both groups include antibiotic producing species.

What is the Difference Between Actinomycetes and Fungi?

Actinomycetes vs Fungi

Actinomycetes are non-motile filamentous gram positive bacteria belonging to the genus of the Actinobacteria class of bacteria. Fungi are a group of microorganism which includes single cell and complex multicellular organisms such as yeast, mushrooms, moulds, etc.
Cellular Organization
Actinomycetes are prokaryotic organisms. Fungi are eukaryotic organisms.
Cell Wall Composition
Actinomycetes contain peptidoglycan in their cell walls. Fungi contain chitin in their cell walls
Cell Size under Microscope
Actinomycetes filaments are smaller. Fungal filaments are bigger.
GC Content in DNA
GC content in actinomycetes DNA is less than fungi. Fungi have more GC bases in DNA.

Summary – Actinomycetes vs Fungi

Actinomycetes are a group of gram positive bacteria. They grow well under anaerobic conditions. The morphology of actinomycetes resembles fungi. They grow as extensive colonies or mycelia. Hence they are referred to as filamentous bacteria. Fungi are a phylum which includes yeasts, moulds and mushrooms. Actinomycetes and fungi are beneficial economically and ecologically. Actinomycetes are unicellular prokaryotic organisms while fungi are unicellular or multicellular eukaryotic organisms. This is the main difference between actinomycetes and fungi.

Download PDF Version of Actinomycetes vs Fungi

You can download PDF version of this article and use it for offline purposes as per citation note. Please download PDF version here Difference Between Actinomycetes and Fungi.

Reference:

1. “Soil Microorganism – Actinomycetes”. My Agriculture Information Bank. N.p., n.d. Web. Available here. 20 July 2017.
2. “Fungus.” Wikipedia. Wikimedia Foundation, 12 July 2017. Web. Available here. 20 July 2017.
3. “Actinomycetes.” The Free Dictionary. Farlex, n.d. Web. Available here. 20 July 2017.

Image Courtesy:

1.”Actinomycetes” By Red58bill – Own work (CC BY 3.0) via Commons Wikimedia
2. “1823700” (Public Domain) via Pixabay

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Filed Under: Microbiology Tagged With: Actinomycetes and Fungi Differences, Actinomycetes Definition, Actinomycetes Features, Actinomycetes Function, Actinomycetes vs Fungi, Compare Actinomycetes and Fungi, Fungi Definition, Fungi Features, Fungi Function

About the Author: Dr.Samanthi

Dr.Samanthi Udayangani holds a B.Sc. Degree in Plant Science, M.Sc. in Molecular and Applied Microbiology, and PhD in Applied Microbiology. Her research interests include Bio-fertilizers, Plant-Microbe Interactions, Molecular Microbiology, Soil Fungi, and Fungal Ecology.

Comments

  1. sonia says

    November 26, 2018 at 1:49 pm

    that’s really helpful thank u so much.well explained an to the point.

    Reply

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