In prophase I of meiosis, an inversion loop forms.

TLS Online TPP Program

#Id: 10220

#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: 10221

#Unit 6. System Physiology – Plant

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: 10222

#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: 10223

#Unit 6. System Physiology – Plant

Organo-genesis

TLS Online TPP Program

#Id: 10224

#Unit 6. System Physiology – Plant

BR biosynthetic pathway is a triterpenoid pathway. Mevalonic acid serves as a precursor of the triterpenoid pathway . Brassinosteroids are synthesized from the plant sterol campesterol

TLS Online TPP Program

#Id: 10225

#Unit 6. System Physiology – Plant

Members of the cytochrome P450 monooxygenase (CYP) enzyme family that are associated with the ER catalyze most of the reactions in the brassinosteroid biosynthesis pathway