The entry of Na+ causes the opening of more voltage- gated Na+ channels and further depolarization, setting up a positive feedback loop .

TLS Online TPP Program

#Id: 5004

#Unit 6. System Physiology – Plant

During phytochrome-mediated leaflet closure, the apoplastic pH of the dorsal motor cells (the cells that swell during leaflet closure) decreases, while the apoplastic pH of the ventral motor cells (the cells that shrink during leaflet closure) increases. 

TLS Online TPP Program

#Id: 5005

#Unit 6. System Physiology – Plant

Continuous red light absorbed by phyB stimulates de-etiolation by maintaining high levels of PfrB.

TLS Online TPP Program

#Id: 5006

#Unit 6. System Physiology – Plant

Continuous far-red light absorbed by PfrB prevents this stimulation by reducing the amount of PfrB.

TLS Online TPP Program

#Id: 5007

#Unit 6. System Physiology – Plant

The stimulation of de-etiolation by phyA depends on the photostationary state of phytochrome.

TLS Online TPP Program

#Id: 9789

#Unit 6. System Physiology – Plant

There is two kind of photo response

1. Red/Far-red 

2. Blue Light

TLS Online TPP Program

#Id: 9790

#Unit 6. System Physiology – Plant