gibberellin

American  

[jib-uh-rel-in] / ˌdʒɪb əˈrɛl ɪn /

noun

Biochemistry.

1. any of a class of growth hormones occurring in fungi and plants.

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gibberellin British  

/ ˌdʒɪbəˈrɛlɪn /

noun

1. any of several plant hormones, including gibberellic acid, whose main action is to cause elongation of the stem: used in promoting the growth of plants, in the malting of barley, etc

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gibberellin Scientific  

/ jĭb′ə-rĕl′ĭn /

1. Any of numerous plant hormones, especially gibberellic acid, that promote stem elongation. The seeds, young shoots, and roots of plants contain gibberellins, and they are also found in fungi.

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Etymology

Origin of gibberellin

1935–40; < New Latin Gibberell ( a ) ( see gibberellic acid) + -in ²

Example Sentences

Decades ago researchers knocked out the genes that control early steps in gibberellin synthesis, but the result was plants that had deformed flowers and abnormal ears.

From Science Magazine • Oct. 25, 2023

They figured out how to suppress corn genes that code for enzymes known as gibberellin 20 oxidases, which put the biochemical finishing touches on the hormone in particular parts of the plant.

From Science Magazine • Oct. 25, 2023

To speed up the process, Bayer and other companies are working on short corn made with gene editing, an approach that can alter gibberellin without adding genes from other species.

From Science Magazine • Oct. 25, 2023

The lower stem nodes of these varieties make insufficient amounts of gibberellin to activate internode elongation.

From Nature • Jul. 14, 2020

Mutations in other genes involved in the synthesis or perception of gibberellin are often responsible for the highly desired short stature of other grain crops.

From Nature • Jul. 14, 2020