Richard hypothesis 

d/w = resource separation ratio.

d/w < 1, species cannot coexist;

1 < d/w < 3, there will be some competition between species

d/w > 3, species coexist harmoniously

TLS Online TPP Program

#Id: 9251

#Unit 6. System Physiology – Plant

The low photosystem II activity in the bundle sheath also minimizes the Rubisco oxygenation reaction.

TLS Online TPP Program

#Id: 9252

#Unit 6. System Physiology – Plant

In Crassulacean acid metabolism (CAM), CO2 uptake is separated temporally and its solely depends on PEPCase circadian modification

TLS Online TPP Program

#Id: 9253

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 9254

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 9255

#Unit 6. System Physiology – Plant

In CAM plants, Nocturnal phosphorylation of PEPCase controls primary carboxylation. PEPCase‐kinase transcripts accumulate during the night, controlled by the circadian oscillator and metabolites.

TLS Online TPP Program

#Id: 9256

#Unit 6. System Physiology – Plant

The concentration at which net change in CO2 is 0 defines the CO2 compensation point and reflects the CO2 concentration at which the rate of gross photosynthetic CO2  uptake exactly equals the respiration rate.