mineral nutrition Flashcards
total no of elements and how much are essential
toal- 60
essential 17
criteria for essentiality
- plant cant complete its life cycle without it
- it cant be replaced
- involved in metabolism
types of essential elements
- based on source
mineral (derived from soil)- mostly
non mineral- derived from co2 and h20 - based on amount needed
micronutrient (100mg/kg)
“Zebra Cubs Made My Boring Cat Jump, Quietly Craving Happy Moments”
Zebra: Zn for Zinc
Cubs: Cu for Copper
Made: Mn for Manganese
My: Mo for Molybdenum
Boring: B for Boron
Cat: Cl for Chlorine
Jump: Fe for Iron
Quietly: Co for Cobalt
Craving: Cr for Chromium
Happy: H for Hydrogen
Moments: Mg for Magnesium
macronutrient(1kmg/kg)
Coffee Provides Necessary Elements For Growing Strong and Healthy Plants”
Coffee: C for Carbon
Provides: P for Phosphorus
Necessary: N for Nitrogen
Elements: K for Potassium
For: Fe for Iron
Growing: Mg for Magnesium
Strong: S for Sulfur
and: A for Aluminum
Healthy: H for Hydrogen
Plants: P for Potassium
Based on functions
what are primary and secondary nutrients
primary- N PH K
usually less in soil cause plant use in high amount
secondary- Ca Mg S
highly present in soil
mobile and immobile elements
mobile- can move
deficiency first in older leaves
deficiency first in younger leaves
N
Ph
Mo
K
immobile
Ca
B
Fe
ammonification
organic form of N to ammonia
nitrification
ammonia to nitrite (oxi) NO2
by nitrosomonas, nitrosospira, nitrosococcus.
nitrite to nitrate NO3
by nitrospira, nitrobacter, nitrococuus
denitrification
nitrate to N2
by pseudomonads in anaerobic condition
anammox bacteria
ammonia to N2 in single step
nitrogen fixation
N2 to ammonia
how does plant takes up nitrate
nitrate proton symportors
against conc gradient uptake possible by proton gradient
how does plant take up ammonia
ammonia channel
proton-ammonium symporters
ammonium uniporters
assimilation in plants
nitrate to nitrite (nitrate reductase)
nitrite to ammonium (nitrite reductase)
ammonia to amino acids (to prevent ammonium toxicity)+
Non biological nitrogen fixation and biological nitrogen fixation
Non biological - N2 to nitrate
Biological N2 to ammonia
How much ammonium 1 N2 gives? Ans no of electrons used
2 NH3
6-8 electrons
