Pseudomonadaceae
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Questions and Answers

Which of the following genera from the Pseudomonad group is known to cause wilt diseases in cultivated plants such as potatoes and tomatoes?

  • Pseudomonas syringae
  • Pseudomonas marginalis
  • Ralstonia solanacearum (correct)
  • Pseudomonas aeruginosa
  • Which of the following genera from the Pseudomonad group is associated with melioidosis, a severe infection that affects animals and humans in tropical countries?

  • Burkholderia pseudomallei (correct)
  • Burkholderia mallei
  • Burkholderia cepacia
  • Burkholderia pseudomallei (correct)
  • Which of the following genera from the Pseudomonad group is considered a model opportunistic pathogen and commonly infects immunosuppressed individuals, cystic fibrosis patients, and burns patients?

  • Pseudomonas putida
  • Pseudomonas aeruginosa (correct)
  • Pseudomonas marginalis
  • Pseudomonas fluorescens
  • Which of the following genera from the Pseudomonad group is known to cause opportunistic infections in individuals with cystic fibrosis?

    <p>Burkholderia cepacia</p> Signup and view all the answers

    Which of the following genera from the Pseudomonad group is associated with a disease called Glanders, primarily affecting horses but rarely humans?

    <p>Burkholderia mallei</p> Signup and view all the answers

    Which of the following genera from the Pseudomonad group is commonly found in soil, water, and rice paddies, and has a long-term environmental survival of up to 14 years?

    <p>Burkholderia pseudomallei</p> Signup and view all the answers

    Which of the following genera from the Pseudomonad group is known to cause chlorosis and necrotic lesions on leaves of plants?

    <p>Pseudomonas syringae</p> Signup and view all the answers

    Which of the following genera from the Pseudomonad group is considered a poor pathogen but can grow at low temperatures?

    <p>Pseudomonas fluorescens</p> Signup and view all the answers

    Which genus from the list is known to cause glanders, a significant type of infection in solipeds (horses & donkeys)?

    <p>Burkholderia mallei</p> Signup and view all the answers

    What are the symptoms of glanders infection?

    <p>Ulceration and cutaneous lesions</p> Signup and view all the answers

    Which of the following is a potential biological weapon due to its low infectious dose, ease of production, and high mortality rate even with treatment?

    <p>Burkholderia mallei</p> Signup and view all the answers

    Which of the following is a characteristic feature of Pseudomonas aeruginosa that may contribute to an increase in bacteraemia caused by this species?

    <p>All of the above</p> Signup and view all the answers

    Which of the following is NOT a mechanism by which Pseudomonas aeruginosa causes tissue damage?

    <p>Antibiotic resistance</p> Signup and view all the answers

    In which type of environments can Pseudomonas aeruginosa survive?

    <p>Hospital environments such as mops and sinks</p> Signup and view all the answers

    Which of the following is a related genus that also appears as an opportunistic pathogen?

    <p>Burkholderia cepacia</p> Signup and view all the answers

    Which genus from the list is associated with an increase in bacteraemia over the last ~30 years?

    <p>Pseudomonas aeruginosa</p> Signup and view all the answers

    Which of the following genera is NOT mentioned as a cause of glanders in animals?

    <p>Pseudomonas</p> Signup and view all the answers

    Which of the following is a characteristic of Pseudomonas aeruginosa?

    <p>Has polar flagella</p> Signup and view all the answers

    What is the main focus of this text?

    <p>Introduction to the Pseudomonadaceae group</p> Signup and view all the answers

    Which order does the Pseudomonadaceae family belong to?

    <p>Pseudomonadales</p> Signup and view all the answers

    What is the classification of the Pseudomonadaceae family?

    <p>Phylum Proteobacteria</p> Signup and view all the answers

    Which of the following is NOT a member of the Pseudomonadaceae group?

    <p>Zymomonas</p> Signup and view all the answers

    What is the role of pyocyanin produced by Pseudomonas aeruginosa?

    <p>Impairs ciliary function</p> Signup and view all the answers

    Which of the following is a characteristic of Pseudomonas aeruginosa infections in humans?

    <p>Produces capsule</p> Signup and view all the answers

    Which genus is known as the epitome of an opportunistic pathogen?

    <p>Pseudomonas</p> Signup and view all the answers

    Study Notes

    Pseudomonad Group Characteristics

    • Pseudomonadaceae family belongs to the order Pseudomonadales.
    • Classification of Pseudomonadaceae family is a family of Gram-negative, aerobic, rod-shaped bacteria.

    Genera and Associated Diseases

    • Pseudomonas solanacearum is known to cause wilt diseases in cultivated plants such as potatoes and tomatoes.
    • Burkholderia pseudomallei is associated with melioidosis, a severe infection that affects animals and humans in tropical countries.
    • Pseudomonas aeruginosa is a model opportunistic pathogen and commonly infects immunosuppressed individuals, cystic fibrosis patients, and burns patients.
    • Pseudomonas aeruginosa is known to cause opportunistic infections in individuals with cystic fibrosis.
    • Burkholderia mallei is associated with a disease called Glanders, primarily affecting horses but rarely humans.
    • Burkholderia pseudomallei can be found in soil, water, and rice paddies, and has a long-term environmental survival of up to 14 years.
    • Pseudomonas syringae is known to cause chlorosis and necrotic lesions on leaves of plants.
    • Pseudomonas fluorescens is considered a poor pathogen but can grow at low temperatures.

    Glanders Infection

    • Glanders is a significant type of infection in solipeds (horses & donkeys).
    • Symptoms of glanders infection include nodular lesions and ulcers in the skin and respiratory tract.

    Pseudomonas aeruginosa Characteristics

    • Pseudomonas aeruginosa is a potential biological weapon due to its low infectious dose, ease of production, and high mortality rate even with treatment.
    • A characteristic feature of Pseudomonas aeruginosa is the formation of biofilms, which may contribute to an increase in bacteraemia caused by this species.
    • Pseudomonas aeruginosa can survive in various environments, including water, soil, and hospital equipment.
    • Pyocyanin produced by Pseudomonas aeruginosa plays a role in its virulence and toxicity.
    • Pseudomonas aeruginosa infections in humans are often characterized by a high mortality rate.

    Other

    • Burkholderia cepacia is a related genus that also appears as an opportunistic pathogen.
    • Pseudomonas aeruginosa is known as the epitome of an opportunistic pathogen.
    • Pseudomonas aeruginosa has shown an increase in bacteraemia over the last ~30 years.

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    BMS2037 Pseudomonas 2023 PDF

    Description

    Test your knowledge on Pseudomonadaceae and other opportunistic pathogens in this quiz by Dr. Alison Cottell. Learn about the clinical and environmental significance of Pseudomonas aeruginosa and Pseudomonas syringae, and enhance your understanding of this diverse group.

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