gibberellins
Sign in to saveGibberellins (GAs) are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development, and leaf and fruit senescence. They are one of the longest-known classes of plant hormone. It is thought that the selective breeding (albeit unconscious) of crop strains that were deficient in GA synthesis was one of the key drivers of the "green revolution" in the 1960s, a revolution that is credited to have saved over a billion lives all over the world.
Research
9,486 papers- Gibberellin signaling in plants.Development (Cambridge, England) · 2013
- From Starfish to Gibberellins: Biosynthesis and Regulation of Plant Hormones.Annual review of plant biology · 2025
- Molecular Aspects of Seed Development Controlled by Gibberellins and Abscisic Acids.International journal of molecular sciences · 2022
- The makings of a gradient: spatiotemporal distribution of gibberellins in plant development.Current opinion in plant biology · 2019
- Green revolution: a mutant gibberellin-synthesis gene in rice.Nature · 2002
via PubMed
Article
21 sectionsContents
- Chemistry
- Bioactive GAs
- Biological function
- Metabolism
- Biosynthesis
- Sites of biosynthesis
- Differences between biosynthesis in fungi and lower plants
- Catabolism
- Homeostasis
- Regulation
- Regulation by other hormones
- Regulation by environmental factors
- Role in seed development
- Signalling mechanism
- Receptor
- DELLA proteins: Repression of a repressor
- Targets of DELLA proteins
- Transcription factors
- Prefoldins and microtubule assembly
- References
- External links
Gibberellins (GAs) are plant hormones that regulate various developmental processes, including stem elongation, germination, dormancy, flowering, flower development, and leaf and fruit senescence. They are one of the longest-known classes of plant hormone. It is thought that the selective breeding (albeit unconscious) of crop strains that were deficient in GA synthesis was one of the key drivers of the "green revolution" in the 1960s, a revolution that is credited to have saved over a billion lives all over the world.
==Chemistry== All known gibberellins are diterpenoid acids synthesized by the terpenoid pathway in plastids and then modified in the endoplasmic reticulum and cytosol until they reach their biologically active form. All are derived via the ent-gibberellane skeleton but are synthesised via ent-kaurene. The gibberellins are named GA1 through GAn in order of discovery. Gibberellic acid, which was the first gibberellin to be structurally characterized, is GA3.