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Cards In This Set
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What 3 events occur in the rumen?
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1. breakdown of food to sugars
2. ferment sugars to VFAs, CO2, and CH4 3. VFAs used as nutrients by the ruminents |
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What problems may be caused by sudden switch from cellulose to grain (starch)?
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1. rapid proliferation of strep bovis
2. lactic acid causes rumenal acidosis 3. kills normal rumen flora or even blood acidosis (fatal) |
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What 2 processes and what 2 bacteria are used to decrease the odor from manure?
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1. nitrification
2. denitrification 1. nitrosomonas 2. nitrobacter |
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Why is it difficult to get the two waste management bacteria to grow together?
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One is aerobic and the other is anaerobic, so the use of special pellets helps defeat this problem
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What is released when plants recognize PAMPS?
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Azalaic acid
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The release of azalaic acids triggers the accumulation of what?
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Salicylate
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What is salicylate a precursor of?
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Aspirin
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What enzyme does erwinia have that induces the soft rot of vegetables?
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Cellulases
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What is the major virulence factor associated with agrobacterium?
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Ti-plasmid-->plant produces carbon source for bacterium (galls)
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What are two plant hormones?
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1. auxin
2. gibberellic acid |
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What are a few fungal pathogens of plants?
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1. ascomycetes
2. basidiomycetes 3. oomycetes |
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What does ascomycetes cause in plants?
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Rotting, wilting, rice blast
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What is associated with rice blast fungi?
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1. fungal spore
2. appressorium 3. penetration peg |
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What does basidiomycetes cause in plants?
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Rusts and smuts
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What does oomycetes cause in plants?
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Root rot (potato blight)
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