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2. Plant hormone - Wikipedia

   en.wikipedia.org/wiki/Plant_hormone

   Plant hormones control all aspects of plant growth and development, including embryogenesis, [1] the regulation of organ size, pathogen defense, [2] [3] stress tolerance [4] [5] and reproductive development. [6] Unlike in animals (in which hormone production is restricted to specialized glands) each plant cell is capable of producing hormones.

3. Ethylene (plant hormone) - Wikipedia

   en.wikipedia.org/wiki/Ethylene_(plant_hormone)

   The plant hormone ethylene is a combatant for salinity in most plants. Ethylene is known for regulating plant growth and development and adapted to stress conditions through a complex signal transduction pathway. Central membrane proteins in plants, such as ETO2, ERS1 and EIN2, are used for ethylene signaling in many plant growth processes.

4. Kinetin - Wikipedia

   en.wikipedia.org/wiki/Kinetin

   Kinetin (/'kaɪnɪtɪn/) is a cytokinin-like synthetic plant hormone that promotes cell division in plants. [1] Kinetin was originally isolated by Carlos O. Miller [2] and Skoog et al. [3] as a compound from autoclaved herring sperm DNA that had cell division-promoting activity.

5. Indole-3-butyric acid - Wikipedia

   en.wikipedia.org/wiki/Indole-3-butyric_acid

   In plant tissue culture IBA and other auxins are used to initiate root formation in vitro in a procedure called micropropagation.Micropropagation of plants is the process of using small samples of plants called explants and causing them to undergo growth of differentiated or undifferentiated cells.

6. Auxin - Wikipedia

   en.wikipedia.org/wiki/Auxin

   The Dutch biologist Frits Warmolt Went first described auxins and their role in plant growth in the 1920s. [4] Kenneth V. Thimann became the first to isolate one of these phytohormones and to determine its chemical structure as indole-3-acetic acid (IAA). Went and Thimann co-authored a book on plant hormones, Phytohormones, in 1937.

7. Gibberellin - Wikipedia

   en.wikipedia.org/wiki/Gibberellin

   They stimulate cell elongation, breaking and budding, and seedless fruits. Gibberellins cause also seed germination by breaking the seed's dormancy and acting as a chemical messenger. Its hormone binds to a receptor, and calcium activates the protein calmodulin, and the complex binds to DNA, producing an enzyme to stimulate growth in the embryo.