Limiting nutrients for plant growth and productivity

Considering nitrogen is so abundant in the atmosphere, why is it a limiting factor in plant growth?

basic reaction of Nitrogen fixation

Haber Bosch industrial process

Steps in nitrogen cycle performed exclusively by bacteria and archaea

Steps in nitrogen cycle that are not necessarily performed by bacteria or archaea

chemical fertilizer PROS

chemical fertilizer CONS

Chemical vs Biological N fixation

Equation for biological nitrogen fixation

Options for nitrogenase reduction reaction

How to demonstrate nitrogenase activity

How do you get DEFINITIVE proof of N2 fixation

proteins within nitrogenase complex

How many ATPs are hydrolyzed when e- move from Fe to FeMo cofactor?

Nitrogenase complex reaction cycle

How do phototrophic organisms reduce ferrodoxin? (considering Fdred is a strong donor)

How do non-phototrophic ANAEROBES organisms reduce ferrodoxin? (considering Fdred is a strong donor)

How do non-phototrophic AEROBES organisms reduce ferrodoxin? (considering Fdred is a strong donor)

How do cyanobacteria protect nitrogenase from O2, considering their phototrophy produces O2?

heterocysts

How do obligate aerobes protect nitrogenase from O2?

How do symbionts protect nitrogenase from O2?

nif regulon

N2 fixation regulation in FREE-LIVING Klebsiella pneumoniae

how is NtrB kinase activity promoted?

Regulation of nitrogen fixation genes
in S. meliloti during symbiosis