Microbes of extreme environment

1. SEMINAR ON
‘‘Microbes of extreme
environment’’Presented by
Mohammed Inzamamuddin
M.Sc. 3rd
Semester Environmental Science
Session 2015-2017
Department of Environmental Science
University Teaching Department
Sarguja Vishwavidyalaya
COURSE TITLE: ENVIRONMENTAL
MICROBIOLOGY AND TOXICOLOGY
COURSE CODE: ENV 303
COURSE TYPE: CCC

2. CONTENTS
• What are microbes
• Types of microbes
• Microbes are extreme environment
• Thermophiles
• Psychrophiles
• Halophiles
• Acidophiles
• Alkaliphiles

3. What are microbes
• Microbes are living organisms, so tiny you can’t see them without a
microscope
• They are so small we need a microscope to see them
• Theyare different shapes and sizes
• They are found EVERYWHERE!
• Some microbes are useful or even good for us
• Some microbes can make us ill

4. Types of microbes
1. Bacteria 3.Fungi
4.Algae 5.Protozoa
• There are 5 main types of microbes
2.Viruses

5. Microbes are extreme environment
4. Acidophiles
1. Thermophiles 2. Psychrophiles
3. Halophiles 5.Alkaliphiles

6. • Thermophiles (thermophilic bacteria) Bacteria that
prefer temperatures above 55°C and can tolerate
temperatures up to 75–80°C. Extreme thermophiles
can live in boiling water, and have been isolated from
hot springs.
Thermophiles
Ex- Alicyclobacillus

7. Psychrophiles
• Psychrophilic ("cold loving")
microorganisms, particularly
bacteria , have a preferential
temperature for growth at less
than 59° Fahrenheit (15° Celsius).
Bacteria that can grow at such
cold temperatures.
• Ex – Psychrobacter sp
Psychrobacter sp

8. Halophiles
• Halophiles are organisms that live in extremely salty
environments. The name 'halophile' means 'salt-loving' in
Greek. Halophiles are all microorganisms. Most of them are
bacteria, while some are very primitive eukaryotes.
• Ex - halobacterium sp
Halobacterium sp

9. Acidophiles
• Acidophiles or acidophilic organisms are those that
thrive under highly acidic conditions (usually at pH
2.0 or below).
• Ex - thiobacillus sp
Thiobacillus sp

10. Alkaliphiles
• Alkaliphiles are a class of extremophilic microbes
capable of survival in alkaline (pH roughly 8.5-11)
environments, growing optimally around a pH of 10.
• Ex – Natronomonas sp
Natronomonas sp

11. References
• http://archive.bio.ed.ac.uk/jdeacon/microbes/thermo.htm
• http://study.com/academy/lesson/thermophiles-definition-examples-application.html
• https://www.boundless.com/microbiology/textbooks/boundless-microbiology-textbook/culturing-microorganisms-6/tempe
• http://mmbr.asm.org/content/62/2/504.full
• https://en.wikipedia.org/wiki/Halobacterium
• http://www.els.net/WileyCDA/ElsArticle/refId-a0000336.html
• http://serc.carleton.edu/microbelife/extreme/alkaline/index.html
• http://www.yourdictionary.com/alkaliphile
• http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4453477/
• https://www.google.co.in/search?
q=bacillus+megaterium+images&noj=1&tbm=isch&tbo=u&source=univ&sa=X&ved=0ahUKEwjig9_Rk8DOAhULRI8
KHR1YDYsQsAQIIQ&biw=1366&bih=623
• https://en.wikipedia.org/wiki/Bacillus_megaterium
• http://www.els.net/WileyCDA/ElsArticle/refId-a0000402.html
• Baross JA and Morita RY (1978) Microbial life at low temperatures: ecological aspects. In: Kushner DJ (ed.)
Microbial Life in Extreme Environments, pp. 9–71.
• Breezee J, Cady N and Staley JT (2004) Subfreezing growth of the sea ice bacterium Psychromonas ingrahamii.
Microbial Ecology 47: 300–304.
• Cavicchioli R (2006) Cold-adapted archaea. Nature Reviews Microbiology 4: 331–343.
• http://www.merriam-webster.com/dictionary/thermophilic
• http://www.encyclopedia.com/doc/1O39-thermophiles.html

12. Thanks
Raise your questions