TLS Online TPP Program

#Id: 7567

#Unit 6. System Physiology – Plant

PSARK::IPT transgenic cotton plants produced more root and shoot biomass, dropped fewer flowers, maintained higher chlorophyll content, and higher photosynthetic rates under reduced irrigation conditions in comparison to wild-type and segregated non-transgenic lines. 

Furthermore, PSARK::IPT-transgenic cotton plants grown in growth chamber condition also displayed greater drought tolerance.  These results indicate that water-deficit induced expression of an isopentenyltransferase gene in cotton could significantly improve drought tolerance.

TLS Online TPP Program

#Id: 7568

#Unit 6. System Physiology – Plant

KNOX genes

KNOX gene expression increases cytokinin levels in the shoot apical meristem by upregulating the cytokinin biosynthetic gene ISOPENTENYL TRANSFERASE7 (IPT7)

TLS Online TPP Program

#Id: 7569

#Unit 6. System Physiology – Plant

Cytokinin maintains meristem by controlling cell division

 Deficient mutants – lonely guy (LOG)/STM

 Gene activates cytokinins

TLS Online TPP Program

#Id: 7570

#Unit 6. System Physiology – Plant

Organo-genesis

TLS Online TPP Program

#Id: 10114

#Unit 6. System Physiology – Plant

Indole-3-acetic acid (IAA) occurs in all plants, 

Peas contain 4-chloroindole-3-acetic acid. 

Mustards and corn contain indole-3- butyric acid (IBA).

TLS Online TPP Program

#Id: 10115

#Unit 6. System Physiology – Plant

Rapidly dividing tissues, shoot apical meristems, young leaves, and developing fruits and seeds are the primary sites of IAA synthesis.