TLS Online TPP Program

#Id: 5101

#Unit 6. System Physiology – Plant

When the CCA1 gene is mutated so that no functional protein is produced, circadian and phytochrome regulation of four genes, including LHCB, is affected.

TLS Online TPP Program

#Id: 5102

#Unit 6. System Physiology – Plant

A protein kinase (CK2)CKB3 can interact with and phosphorylate CCA1, which is a multisubunit protein with serine/threonine kinase activity.

TLS Online TPP Program

#Id: 5103

#Unit 6. System Physiology – Plant

Phytochrome interacting factors (PIFs) act as negative regulators of photomorphogenesis.

TLS Online TPP Program

#Id: 5104

#Unit 6. System Physiology – Plant

PIFs promote etiolated development in the dark (skotomorphogenesis) primarily by serving as transcriptional activators of dark induced genes.

TLS Online TPP Program

#Id: 5105

#Unit 6. System Physiology – Plant

PIFs as constitutive transcriptional activators in the dark

TLS Online TPP Program

#Id: 7100

#Unit 6. System Physiology – Plant

The response to ethylene is very rapid and causes triple response which is

Reduced elongation

Hypocotyl swelling

Apical hook exaggeration