Please enable JavaScript.
Coggle requires JavaScript to display documents.
Lec: 40 AgMicro - Coggle Diagram
Lec: 40 AgMicro
Crops
Invasion routes
Stomata
pores O2 & CO2 exchanges
Appressoria
Cellulase
degrade cell wall
Plant response
receptors for PAMPs
azalaiic acid
defence
produce Ab compounds
alarmone
Try to sense bac effectors
Undo alteration of plant proteins
Bac patho of plants
Erwinia
soft rota
cellulase
P. syringae
Agrobacterium
galls
Ti plasmid
Insert tDNA
increase auxin
Spiroplasma
injected in phloem
by leafhoppers
Fungal Patho of plants
Ascomycota
appressoria
make holes
Viral pathogens of plants
Naked RNA virus
stunt
mosaic
wilt
spread from wounds
resis in insect
gut
mouth
cause yield reduc
not tot crop loss
Bacterial Management of plant disease
B. thuringiensis
make crystal that go in gut and kill insect
can be dusted on plants
B. cereus
prod Ab & Af
Bac siderophores
lower free Fe to prevent patho growth
PGPR
Plant Growth Promoting Rhizobacteria
colonize plant roots
due to plant releasing flavanoids
factors needed
motility
to move to flavanoids
quorum sensing
attachment
form biofilms
Ab secretion
3 mechanism to induce resistance
Prod Ab
Take up space
outcompete colonization by pathogen
induction of innate immunity
azalaic acid
Direct Bac enhancement of plant growth
Phosphate uptake
Phosphate cycle
Animal waste -> Bacteria-> Phosphate
N fixation
Plant hormones
Auxin
Plant growth hormone
problem if produced on lead or stem
tumors
good if produced on apical meristem or root nodules
issue is where they are produced
Gibberellic Acid
germination
fruit growth
Root hair proliferation
Issue
Fusarium
foolish seedling disease
too much G.A.
Ethylene
Issue when
nessasary for seed germination
but afterwards need to get rid of since
inhibit root elongation
ACC deaminase
slow release coating
degrade ethylene
as coating dissolve
less ethylene
Livestock
Ruminants
break down food to sugar
fermentation
sugars fermented to
volatile fatty acids
CO2
CH4
acidic rumen = problem
lactic acid
lead to rumenal acidosis
Animal waste
swine facility
hog manure has ammonia
odor
micronutrient
runoff or leakage can cause algal blooms
manure added to tanks w/ pellets
Nitrifying
aerobic
Denitrifying
anaerobic
prob
how happen a same place
pellet
exterior aerobic
pockets are anaerobic
Anamox