Diphenyltetrazolium bromide, a yellow tetrazole is reduced by metabolically active cells to form insoluble, purple formazan dye crystals detected at 570nm

TLS Online TPP Program

#Id: 9233

#Unit 6. System Physiology – Plant

Photorespiration stimulates nitrate assimilation in C3 plant roots, probably by increasing NADH availability in the cytosol.

Photorespiration is positively correlated with growth under nitrogen limitation

TLS Online TPP Program

#Id: 9234

#Unit 6. System Physiology – Plant

Photorespiration enhances C3 plant tolerance to drought, salinity and chilling.

TLS Online TPP Program

#Id: 9235

#Unit 6. System Physiology – Plant

The C4 pathway, involving mesophyll cells and bundle-sheath cells, predominates in plants of tropical origin. 

TLS Online TPP Program

#Id: 9236

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 9237

#Unit 6. System Physiology – Plant

Mesophyll cell (peripheral region)= Primary carboxylation and regeneration

Bundle sheath cell (internal region)= Decarboxylation and Secondary carboxylation

TLS Online TPP Program

#Id: 9238

#Unit 6. System Physiology – Plant

Three types of C4 photosynthesis are known, differing both in the four‐carbon acids transported between mesophyll and bundle sheath cells, and the mechanism of decarboxylation in the bundle sheath cells