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

In this case the targets were two genes that regulate the creation of gibberellin mainly in the leaves and stalk, resulting in plants that were one-third shorter.

From Science Magazine • Oct. 25, 2023

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

This way, the levels of gibberellin can be lowered in the stalks, but not the flowers, stunting the plants’ growth without undermining their productivity.

From Science Magazine • Oct. 25, 2023

The activation of this cell division and elongation process requires the growth hormone gibberellin.

From Nature • Jul. 14, 2020

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

From Nature • Jul. 14, 2020