Gibberellins are plant hormones responsible for the stimulation of stem elongation (pictured), germination, and flowering. These hormones are involved in the processes that break dormancy. The degradation of DELLA proteins is due to gibberellin function; this allows gene expression to be regulated as phytochrome interacting factors can bind to gene promoters. Gibberellins are produced to a greater extent in colder temperatures. All gibberellin hormones are diterpenoid acids. They are named “GAn” with n being a number corresponding with the order of discovery. As of 2003, there are 126 GAs.


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