I am going to try to provide a very brief description of this from my current understanding.
The best way to describe this from my perspective is the formation of organs (leaves, roots, stems) from the callus. The callus, formed by the division of the explants cells (cytokinesis), is activated by the addition of plant growth regulators (auxins/cytokinens) in the culture medium.
There are 2 types:
Direct - explant is directly cultured to create a new plant without callus formation
Indirect - explant forms callus, then root/shoot formation
Plant Growth Regulators
Auxins
Cytokinins
Gibberellins
2 Stages of Organogenesis
Caulogenesis = Shoot Formation (A<C) PGR concentration
Rhizogenesis = Root Formation (A>C) PGR concentration
Cytokinesis (A=C)
@SCJedi - Hitting the key points? What am I missing? Thinking about Direct Organogenesis, can you provide an example of an explant directly creating a new plant without callus formation? Also let me know if you think this belongs in another section!
www.plantcelltechnology.com
The best way to describe this from my perspective is the formation of organs (leaves, roots, stems) from the callus. The callus, formed by the division of the explants cells (cytokinesis), is activated by the addition of plant growth regulators (auxins/cytokinens) in the culture medium.
There are 2 types:
Direct - explant is directly cultured to create a new plant without callus formation
Indirect - explant forms callus, then root/shoot formation
Plant Growth Regulators
Auxins
Cytokinins
Gibberellins
2 Stages of Organogenesis
Caulogenesis = Shoot Formation (A<C) PGR concentration
Rhizogenesis = Root Formation (A>C) PGR concentration
Cytokinesis (A=C)
@SCJedi - Hitting the key points? What am I missing? Thinking about Direct Organogenesis, can you provide an example of an explant directly creating a new plant without callus formation? Also let me know if you think this belongs in another section!

Organogenesis in Plants
How organogenesis functions to form plant organs in plant tissue culture. Read more.
