Fungus of the Day
Darwin's Fungus
Recap
A story of penicillin
Who was Ronald Hare? Lab Assistant, temperature & optimal growth
Why were bed pans important?
Who was Mary Hunt? Moldy Produce
Cyclosporin = transplant drug, Norway, secret identity!
Today's Story
Wood Rotting
recap tree anatomy
tree bark = armor
How does rotting start?
Need a wound!
- Bacteria move in; change chemistry, no structural damage
- Pioneer fungus move in; stain wood, no structural damage
- Wood rotting fungus move in; starts eating wood
Picky eaters
Prefers either
- lignin (brown)
- results in white rot
- affects mainly deciduous trees
- cellulose (white)
- results in brown rot
- affects mainly conifers
FRUITING BODIES = FALLING FLAG; DON'T GET SUED!
CODIT: barrier against fungi
Things that matter
tree type
- good
- lucust
- cherry
- cedar
- poor
- aspen
- willow
- maple
wound size
bigger hole = bigger CODIT = more stress on tree
tree vigor
stress?
wounded?
- what to do?
- wound dressing; controversial, mainly cosmetic
- fill hole?
- take care; keep healthy
Rotting affects not only living trees, but dead wood too!
- e.g. In construction, use of wood in buildings
- use resistant species; down side = cost $$$
- use of wood preservatives?
- (CCA)rsenic
- poisons leach out and persist in environment
- copper is highly toxic to marine life
- article read "Danger on the Dock"
- Erin Brockovich
No comments:
Post a Comment