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4 Cards in this Set
- Front
- Back
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What is the Procedure for gene sequence analysis?
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• Grow isolates
• Extract DNA • PCR with primers • Sequence bands • Bioinformatics • Phylogenetic analysis |
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What are the mechanisms of pathogen diversity?
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Factors that influence allele variation in populations
• Population size • Mutation • Random genetic drift and selection • Migration (gene flow) • Genetic recombination – through sexual and asexual reproduction |
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What are the means of Plant Pathogen diagnostics/identification
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• Koch’s postulates
• Morphology • symptoms • spore shape and size, bacterial colony colour, Gram stain • presence of identifiable features (ie sclerotia) • culture morphology on specific growth medium • Biochemical – protein compounds • Serological • Molecular – nucleotide sequence differences |
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What do monocyclic and polycyclic refer to?
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Plant disease epidemics can be classified into two basic types, monocyclic and polycyclic, depending on the number of infection cycles per crop cycle.
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