No matter how it is born, a new gene starts its life as a single copy in the population.

As with any new mutation, by far the most likely outcome is that it will be lost by random drift or selection over the next few generations

TLS Online TPP Program

#Id: 7115

#Unit 6. System Physiology – Plant

ETO- and CTR- Mutants gives constitutive triple response

CTR- mutants always gives constitutive triple response

CTR1 appears to be related to RAF-1, a MAPKKK serine/ threonine protein kinase

TLS Online TPP Program

#Id: 7116

#Unit 6. System Physiology – Plant

ABA (C15) biosynthesis takes place in chloroplasts and cytosol from C40 precursor

ABA closes stomata in response to water stress

ABA promotes root growth and inhibits shoot growth at low water potentials

TLS Online TPP Program

#Id: 7117

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 7118

#Unit 6. System Physiology – Plant

TLS Online TPP Program

#Id: 7119

#Unit 6. System Physiology – Plant

ABA is transported by both the xylem and the phloem, but it is normally much more abundant in the phloem sap.

TLS Online TPP Program

#Id: 7120

#Unit 6. System Physiology – Plant

ABA inhibits precocious germination and vivipary ABA accumulates in dormant buds ABA inhibits ga-induced enzyme production