Microbes of extreme environment
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![Page 1: Microbes of extreme environment](https://reader036.fdocuments.in/reader036/viewer/2022062523/58ef37101a28abc84c8b457f/html5/thumbnails/1.jpg)
SEMINAR ON ‘‘Microbes of extreme
environment’’Presented by Mohammed Inzamamuddin
M.Sc. 3rd Semester Environmental ScienceSession 2015-2017
Department of Environmental ScienceUniversity Teaching Department
Sarguja VishwavidyalayaCOURSE TITLE: ENVIRONMENTAL
MICROBIOLOGY AND TOXICOLOGYCOURSE CODE: ENV 303
COURSE TYPE: CCC
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CONTENTS
• What are microbes• Types of microbes• Microbes are extreme environment• Thermophiles• Psychrophiles• Halophiles• Acidophiles• Alkaliphiles
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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
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Types of microbes
1. Bacteria 3.Fungi
4.Algae 5.Protozoa
• There are 5 main types of microbes
2.Viruses
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Microbes are extreme environment
4. Acidophiles
1. Thermophiles 2. Psychrophiles
3. Halophiles 5.Alkaliphiles
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• 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
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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
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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
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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
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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
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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/temperature-and-microbial-growth-64/classification-of-microorganisms-by-growth-temperature-388-5509/• 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_Rk8DOAhULRI8KHR1YDYsQsAQIIQ&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
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