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Microbial world - Coggle Diagram
Microbial world
Types of Microorganisms
Protozoa
Absorb or ingest
organic chemicals
May be motile via pseudopods, cilia, or flagella
Eukaryotes
Algae
Cellulose cell walls
photosynthesis
Produce molecular oxygen and organic compounds
Eukaryotes
Fungi
Eukaryotes
Chitin cell walls
organic chemicals for energy
Molds and mushrooms are multicellular
consisting of masses of mycelia, which are composed of filaments called hyphae
Yeasts are unicellular
Viruses
Acellular
DNA or RNA core
is surrounded by a protein coat
Coat may be enclosed in a lipid envelope
replicated only when they are in a living host cell
Archaea
Lack peptidoglycan
Live in extreme environments
Methanogens 產甲烷 、Extremehalophiles 嗜鹽 、Extremethermophiles 嗜熱
Prokaryotic
Multicellular Animal Parasites
helminths蠕蟲
Parasitic flatworms and roundworms
Microscopic stages in life cycles
Eukaryotes
Bacteria
Peptidoglycan cell walls
Binary fission
Prokaryotes
energy
(in)organic chemicals
photosynthesis
A Brief History of Microbiology ( 1 )
10941008A
The Debate over Spontaneous
Generation
Spontaneous generation
the hypothesis that living
organisms arise from nonliving matter;
a “vital force” forms life
Biogenesis
the hypothesis that living organisms
arise from preexisting life
Evidence Pro and Con
1861
Louis Pasteur
demonstrated that
microorganisms are present in the air
experiment
NOT sealed
Microbial growth
sealed
No microbial growth
The First Observations
1858
Rudolf Virchow
said cells arise from
preexisting cells
Cell theory
All living things are composed of cells
and come from preexisting cells
1673–1723
Anton van Leeuwenhoek
described live microorganisms
1665
Robert Hooke
reported that living things are
composed of little boxes, or cells
The Theory of Biogenesis
1857–1914
Pasteur’s
work
discoveries relationship
between microbes
disease
immunity
antimicrobial drugs
“The Father of Microbiology”
Fermentation and Pasteurization
Fermentation
alcohol
vinegar
Pasteurization
is the
application of a high
heat for a short time
The Golden Age of Microbiology
Vaccination
The Birth of Modern Chemotherapy
The First Synthetic Drugs
A Fortunate Accident—Antibiotics
The Germ Theory of Disease
Microbes in our live isu10812060A
rapid growing
too small to see with unaided eyes
A few are pathogenic (disease-causing)
Vibrio cholera = cholera
Plasmodium= malaria
Smallpox virus=small pox
Friend or Foe ?
producers in the ecosystem by photosynthesis
Produce industrial chemicals
acetone
ethanol
Decompose organic waste
Produce fermented foods
vinegar
cheese
Produce products
disease treatment (e.g., insulin)
manufacturing(e.g., cellulase)
Designer Jeans
Bleaching: mushroom peroxidase
Indigo: E. coli
Cotton: Gluconacetobacter
Bioplastic: bacterial polyhydroxyalkanoate (PHA)
Stone-washing: Trichoderma
Microbes and Human Welfare(10941001a)
Bioremediation 生物復育
Bacteria recycle by carbon, nutrients, sulfur, and phosphorus
can be used by plants and animals
Biological Insecticides 生物殺蟲劑
取代 chemical pesticides(殺蟲劑/農藥)
For example: Bacillus thuringiensis(蘇力菌)
fatal in many insects,
but harmless to other humans and plants
Microbial Ecology
bacteria is 分解者
degrade organic matter in sewage (分解在污水中的有機物質)
For example: oil (石油) and mercury(水銀)
Biotechnology
利用microbes to produce foods and chemicals
Recombinant DNA technology(重組DNA)
enables bacteria and fungi to produce a variety of proteins
vaccines and enzymes
For example: gene therapy(基因治療)
Genetically modified bacteria(基因改造)
Food production
起司
The milk has been coagulated(凝結) by the
action of rennin(凝乳酵素的作用) , forming curd(凝塊物)
釀酒
麵包
A Brief History of Microbiology (10941055A)
THE THEORY
The Germ Theory of Disease
is based on the concept that many diseases are caused by infections with microorganisms.
Contributors
Pasteur believed
that another silkworm disease was caused by a protozoan.
Ignaz Semmelweis
advocated handwashing to prevent transmission of puerperal fever from one obstetrical patient to another.
Joseph Lister
used a chemical disinfectant to prevent surgical wound infections.
Agostino Bassi
showed that a silkworm disease was caused by a fungus.
The Debate over Spontaneous Generation
Biogenesis:
the hypothesis that living organisms arise
from preexisting life
.
Spontaneous generation
: the hypothesis that living organisms arise
from nonliving matter
; a “vital force” forms life.
THE SCIENTISTS
Anton van Leeuwenhoek
the first man that saw the microorganism, and described live microorganisms.(but not the father of microbiology. Pasteur is.)
Ignaz Semmelweis
advocated
handwashing
to prevent transmission of puerperal fever from one obstetrical patient to another.
Mothers' savior
Father of Infection Control
Agostino Bassi
Father of Insect Pathology
showed that a silkworm disease was caused by a fungus.
Rudolf Virchow
said cells arise from
preexisting cells
.
Joseph Lister
used a chemical disinfectant to prevent surgical wound infections
The father of surgery
Robert Hooke
reported that living things are composed of little boxes, or cells.
Louis Pasteur
demonstrated that microorganisms are present in the air.
S-shaped flask
kept microbes out but let air in.
The Father of Microbiology
showed that microbes are responsible for
fermentation
.
Pasteurization
(巴斯德滅菌法)
is the application of a high heat for a short time.
believed that another
silkworm (絲狀蟲病)
disease was caused by a
protozoan (原蟲)
. Agostino Bassi prooved.
Robert Koch
Koch’s postulates
(科霍假說), to prove that a
specific microbe
causes a
specific disease
The father of bacteriology
Edward Jenner
inoculated a person with cowpox virus, who was then protected from smallpox
The father of immunology
Paul Ehrlich
speculated about a
“magic bullet”
that could destroy a pathogen without harming the host
developed a synthetic arsenic drug, salvarsan, to treat syphilis (梅毒).
The father of chemotherapy
Alexander Fleming
discovered the first antibiotic.
observed that
Penicillium
fungus made an antibiotic, penicillin, that killed
S. aureus
CHEMOTHERAPY—ANTIBIOTICS
chemicals produced by bacteria and fungi that inhibit or kill other microbes.
example
Penicillium fungus made an antibiotic, penicillin, that killed S. aureus
Alexander Fleming discovered the first antibiotic in 1928.
VACCINATION
definition
The act of introducing a vaccine into the body to produce immunity to a specific disease.
function
After getting vaccinated, you develop immunity to that disease, without having to get the disease first.
is derived from
vacca
, for cow The protection is called immunity.
Naming and classifying Microorganisms isu10812060A
Escherichia coli
discoverer :Theodor Escherich
the bacterium’s habitat: the large
intestine, or colon
Staphylococcus aureus
Staphylo+coccus: clustered +spherical
Aureus: gold-colored
Scientific name
Linnaeus established
Each organism has two names
the genus
specific epithet
italicized or underlined
may be descriptive or honor a scientist
After the first use, scientific names may be abbreviated with the first letter of the genus and the specific epithet
Three domains of the world
10941008A
Three domains
Archaea
Eukarya
Bacteria
classification
prokaryotes
Bacteria
Archaea
eukaryotes
Eukarya
Fungi
Plants
Protists
Animals
Modern Developments in Microbiology
10941022A
Modern Developments in Microbiology
Bacteriology
the study of bacteria
Mycology
the study of fungi
Virology
the study of viruses
Parasitology
the study of protozoa and
parasitic worms
Immunology
the study of immunity
EX.Rebecca Lancefield
in 1933
identify some bacteria according to serotypes
Recombinant DNA Technology
Microbial genetics微生物遺傳學
the study of how microbes
inherit traits
Molecular biology分子生物學
the study of how DNA directs
protein synthesis
Genomics基因組學
the study of an organism’s genes; has
provided new tools for classifying microorganisms
Recombinant DNA 重組DNA
DNA made from two different
sources
For example
Paul Berg in the 1960s
inserted animal DNA into bacterial
DNA, and the bacteria produced an animal protein
https://courses.lumenlearning.com/microbiology/chapter/microbes-and-the-tools-of-genetic-engineering/
George Beadle and Edward Tatum in 1941
showed
that genes encode a cell’s enzymes
https://www.khanacademy.org/science/biology/gene-expression-central-dogma/central-dogma-transcription/a/one-gene-one-enzyme-hypothesis
Oswald Avery, Colin MacLeod, and Maclyn
McCarty in 1944
showed that DNA is the hereditary material
https://www.scienceabc.com/pure-sciences/avery-macleod-and-mccarty-hershey-chase-dna-experiments.html
François Jacob and Jacques Monod in 1961
discovered the role of mRNA in protein synthesis
https://www.nsf.gov/about/history/milestones_nsfnobel.jsp
http://www.nobelprize.org/nobel_prizes/me
dicine/laureates/1908/
Nobel Prizes for Microbiology Research
Immune pioneers share Nobel prize for medicine in 2011
http://pansci.asia/archives/7875
http://highscope.ch.ntu.edu.tw/wordpress/?p=66066
【時事焦點】2014年諾貝爾化學獎-如何將光學顯微鏡變成奈米顯微鏡
https://case.ntu.edu.tw/blog/?p=19420
https://www.ch.ntu.edu.tw/nobel/2017.html
【2017諾貝爾化學獎】將生命捕捉在原子的細節中
https://technews.tw/2018/10/04/nobel-chemistry-2018-for-protein-evolution-and-gentic-enginner-tools/
【諾貝爾 2018】促進生質能和新藥開發,化學獎頒給蛋白質演化研究及基因工程工具
Microbes and Human Disease
Infectious Diseases
(10941056A)
example
EIDs
(Emerging infectious diseases)
definition
new diseases which increasing in incidence
kind
Newly recognized, ex: AIDS
a known pathogen with new strains, ex: Influenza
Re-emerging, ex: Tuberculosis, Measles
Avian Influenza A
(禽流感)
pathogen: Influenza A virus
host: waterfowl and poultry
human-to-human transmission has not occurred
MRSA
(Methicillin-resistant Staphylococcus aureus)
pathogen:
S. aureus
1950s: resistance to Penicillin
1990s :resistance to vancomycin
VISA: vancomycin-intermediate-resistant S. aureus
VRSA: vancomycin-resistant S. aureus
1980s: resistance to Methicillin
West Nile Encephalitis
(西尼羅腦炎)
pathogen: West Nile virus
first diagnosed: the West Nile region of Uganda in 1937
host: birds
appeared:New York City in 1999
Cryptosporidiosis
(隱孢子蟲病)
pathogen:
Cryptosporidium
protozoa
cause diarrheal
transmitted by water
first reported in 1976
Bovine Spongiform Encephalopathy
(牛海綿狀腦炎)
pathogen:prion
causes CJD(Creutzfeldt-Jakob disease) to human
host: Bovine
the cause of New variant CJD : humans fed sheep offal(內臟) to cattle for protein
(為了提高產率,給牛補充蛋白質,將得到搔癢症而死亡的動物餵給牛食用,因其病源體與狂牛症同為普里昂,牛長期食用有可能感染狂牛症)
AIDS
(Acquired immunodeficiency syndrome)
pathogen: HIV(human immunodeficiency virus)
Sexually transmitted infection
First identified in 1981
Escherichia coli O157:H7
pathogen:
E. coli
which is toxin-producing
first seen in 1982
cause diarrheal
Ebola Hemorrhagic Fever
(伊波拉出血熱)
pathogen: Ebola virus
causes fever, hemorrhaging, and blood clotting
first identified near Ebola River, Congo
occur time
pathogen overcomes the host’s resistance
The Human Microbiome(人類微生物菌相) 10941001a
complete Human
visible organs
大約10的-14次方 cells
大約23000 genes
invisible microbiome
大約10的-14次方 million microbes
大約9 million genes
人體內的微生物
以共生夥伴的身份生活,提供必需的營養素
Fungi
Urigenital(泌尿器官)
Viruses
Skin(皮膚)
Archaea
Oral(口腔)
Parasites(寄生蟲)
Digestive tract(消化器官)
Bacteria
細菌蛋白質編碼基因與人類基因的比率為360:1
微生物影響非常廣泛
情緒喜悲與否?
行為正常/脫序與否?
腸道健康與否?