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Microbial Diversity Part 1: Introduction to Diversity
This document provides an introduction to microbial diversity. It defines microbes as small living organisms that require a microscope to be seen, including six major groups: bacteria, archaea, algae, protists, fungi, and viruses. The document discusses the morphological, metabolic, ecological, behavioral, and evolutionary diversity of microbes and provides some examples, such as different cell structures, means of obtaining energy like photosynthesis, and habitats like the human gut and acid mine drainage. It notes that microbes play critical roles in biogeochemical cycles, multicellular life, agriculture, and human health.
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Overview of microbial diversity focusing on bacteria, led by Dr. Rachel Mackelprang.
Defining microbes, their size, exceptions, and characteristics, including reproduction and metabolism.
Six groups of microbes presented. Divisions include prokaryotes (bacteria, archaea) and eukaryotes (algae, fungi, protists) plus viruses.
Microbes' critical roles in global cycles, multicellular life, agriculture, and human health.
Evolution from conditions hospitable for life to the emergence of microorganisms and multicellular organisms.
Explanation of microbial diversity through ecological, metabolic, morphological, structural, and behavioral aspects.
Focus on morphological diversity including cell structure, endospores, and appendages such as flagella.
Highlighting the extensive metabolic diversity of microbes compared to macroscopic organisms with specific examples.
Examples of ecological diversity in microbial environments such as deep-sea vents and soils.
Discussing behavioral diversity in microbes and the evolutionary framework underlying all previous diversity aspects.
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- 1. Bacterial Diversity Dr. RachelMackelprang Biology 418 Spring 2020 Book: Principles of Microbial Diversity by James Brown
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- 3. What is amicrobe? Small Thiomargarita namibiensis Caulerpa taxifola Loose definition: Requires a microscope to be seen Some exceptions: Large bacteria and algae Some small organisms are not microbes
- 4. What is amicrobe? Small Thiomargarita namibiensis Caulerpa taxifola Loose definition: Requires a microscope to be seen Some exceptions: Large bacteria and algae Some small organisms are not microbes Microbes are living creatures: They metabolize food, grow, reproduce. Except for viruses, which are noncellular.
- 5. Six major groupsof microbes Prokaryote: organism lacking nucleus Bacteria Archaea Eukaryotes: Organism whose cells contain a nucleus Algae Protists Fungi Viruses: Noncellular particle containing genetic material that takes over cell to generate more viral particles
- 6. Microbes are critical: Justa few examples Global biogeochemical cycles Biology of multicellular organisms AgricultureHuman health
- 7. History of Lifeon Earth Earth and Mars Form Start of conditions compatible with life First microorganisms First multicellular organisms Algae
- 8. History of Lifeon Earth Earth and Mars Form Start of conditions compatible with life First microorganisms First multicellular organisms Algae Mars surface becomes less habitable
- 9. What is microbialdiversity? In the macroscopic world, this is an easier question Ecological MetabolicMorphological Structural Behavioral Book: Ch1 pg 5-10
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- 11. Cell envelope Endospores Flagella andpili Stalks Structural Diversity
- 12. CO2 Lithotrophy Metabolic Diversity Microbesare MUCH more metabolically diverse than macroscopic eukaryotes: just a few examples Photosynthesis Chemo- heterotrophy
- 13. Acid mine drainage Humangut Ecological Diversity We live in a microbial world Deep sea vent Soil
- 14.
- 15. Evolutionary Diversity Underlies the five previousaspects Most phylogenetic types of organisms are microbial