gibberellic acid gibberellins
TRANSCRIPT
![Page 1: Gibberellic acid gibberellins](https://reader030.vdocument.in/reader030/viewer/2022012808/61bd6fe784631f7b34763f59/html5/thumbnails/1.jpg)
Gibberellic acidgibberellins
- Three-dimensional gibban structure- many isoforms in different plant species- Discovery: „foolish seedling“ development in rice
![Page 2: Gibberellic acid gibberellins](https://reader030.vdocument.in/reader030/viewer/2022012808/61bd6fe784631f7b34763f59/html5/thumbnails/2.jpg)
Functions
- stem elongation (internodium growth, cell elongation)- germination and backing of dormancy- flowering time and development- leaf and fruit senescence
Altered stem lengths: - mutants, exogenous hormone applications, etc- particularly interesting for rosette plants.
+ GA + GA
GA
![Page 3: Gibberellic acid gibberellins](https://reader030.vdocument.in/reader030/viewer/2022012808/61bd6fe784631f7b34763f59/html5/thumbnails/3.jpg)
Induction of bolding in Arabidopsis
GA effect on grapes
- GA + GA
- GA + GA
![Page 4: Gibberellic acid gibberellins](https://reader030.vdocument.in/reader030/viewer/2022012808/61bd6fe784631f7b34763f59/html5/thumbnails/4.jpg)
Complex biosynthesis: terpenoid pathway in plastids ’ modification at the ER ’ final steps in
cytosol
Plastids
Cytosol
ER
Inactivation,degradation
![Page 5: Gibberellic acid gibberellins](https://reader030.vdocument.in/reader030/viewer/2022012808/61bd6fe784631f7b34763f59/html5/thumbnails/5.jpg)
Hydrolysis of endosperm reserves by GA in barley seeds
![Page 6: Gibberellic acid gibberellins](https://reader030.vdocument.in/reader030/viewer/2022012808/61bd6fe784631f7b34763f59/html5/thumbnails/6.jpg)
DELLA
MYB
GA signaling