Fungi as pathogen (Lec 8) (Set 1)

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Which of the following is a true pathogen?

Fungi causing systemic infections in humans (correct)

Fungi causing allergies

Fungi producing mycotoxins

Fungi as phytopathogens

What is the primary cause of disease in plants?

Viruses

Insects

Bacteria

Fungi (correct)

Why are human mycoses a mounting clinical problem?

Increasing prevalence of fungal infections

Limited antifungal treatments

Lack of understanding of fundamental fungal biology

All of the above (correct)

Which antifungal medication targets ergosterol, an essential component of fungal cell membranes?

Polyenes Signup and view all the answers

Which group of fungi attack roots and have a broad host range?

Soil-borne pathogens Signup and view all the answers

Which fungal infection is most common in alkaline desert soils of southwestern US?

Coccidioidomycosis Signup and view all the answers

Which type of fungi are adapted to high temperature and low oxygen tension?

True pathogens Signup and view all the answers

What is the major impact of emerging fungal threats mentioned in the text?

All of the above Signup and view all the answers

What is the most common symptom of Coccidioidomycosis?

Fever Signup and view all the answers

Which group of fungi are usually asymptomatic in a healthy host?

True pathogens Signup and view all the answers

Which group are oomycetes more closely related to based on biochemical and molecular analysis?

Algae Signup and view all the answers

What is the typical habitat for oomycetes?

Water-logged soils Signup and view all the answers

What type of pathogens are oomycetes?

Necrotrophic pathogens Signup and view all the answers

Which of the following is an example of a necrotrophic oomycete pathogen?

Phytophthora infestans Signup and view all the answers

What is the main difference between biotrophic and necrotrophic oomycete pathogens?

Host cell death Signup and view all the answers

How do biotrophic oomycete pathogens infect their hosts?

Through cuticle Signup and view all the answers

What is the function of haustoria in oomycete pathogens?

Nutrient source Signup and view all the answers

How quickly can Puccinia graminis infected wheat produce spores?

6-10 days Signup and view all the answers

What is the scale of the problem with Puccinia graminis infected wheat?

Trillions of spores per day Signup and view all the answers

What can be observed when rust spores infect a host plant?

Spore burst through the infection site Signup and view all the answers