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Mildew Mania PLUS. An evolutionary arms-race in the field. 2009 mildew sampling pathotypes. Red = wildtype Blue = fungicide resistant mutant. 2012 mildew sampling pathotypes. Red = wildtype Blue = fungicide resistant mutant. AIMS.

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mildew mania plus

Mildew Mania PLUS

An evolutionary arms-race in the field

2009 mildew sampling pathotypes
2009 mildew sampling pathotypes

Red = wildtype

Blue = fungicide resistant mutant

2012 mildew sampling pathotypes
2012 mildew sampling pathotypes

Red = wildtype

Blue = fungicide resistant mutant

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AIMS
  • To encourage students to enrol in agricultural studies and engage with scientific research
  • To identify when powdery mildew is present
  • To collect samples and identify which barley varieties have genetic resistance, and which strain(s) of powdery mildew are present
continue planting 1 pot each week until signs of mildew infection
Continue planting 1 pot each week until signs of mildew infection.

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Week 2: plant Baudin seeds

Week 1: plant Baudin seeds

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Week 3: plant Baudin seeds

Week 4: plant Baudin seeds

Week 5: INFECTION FOUND??! Proceed with planting all extra cultivars including Baudin with and without fungicide

Monitor new pots every week for signs of infection. Record how many, in which pots and when infection occurs – send samples to ACNFP

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advantages of the plus
Advantages of the PLUS
  • More chance of infection due to presence of “disease nursery”
  • Multiple cultivars of barley with different levels of genetic resistance
  • Genetically susceptible barley treated with fungicide
  • Extension lesson activities which we can design and present to your students
possible incursions
Possible incursions:
  • All years
    • Experimental design and practise – how to ensure a fair and reliable test
  • Year 8
    • Classification of cells - difference between fungi, plant and animal cells: physical properties and reproduction
  • Year 9
    • Ecosystem communities – biotic and abiotic factors which effect agricultural populations eg. competition, genetic variability, rainfall, fungicide use etc
  • Year 10
    • Co-evolution – mildew and barley have evolved together, as one resistant gene evolved, a new virulence gene evolved
  • Year 11&12 (biology/ integrated/plant production systems)
    • Using biotechnology - students design a diagnostic test to determine if a specific barley cultivar contains a mutation in a resistance gene