Definitions

from The American Heritage® Dictionary of the English Language, 4th Edition

  • n. Any of several plant hormones, such as gibberellic acid, used to promote stem elongation.

from Wiktionary, Creative Commons Attribution/Share-Alike License

  • n. Any of a class of diterpene plant growth hormones first isolated from the fungus Gibberella fujikuroi.

from the GNU version of the Collaborative International Dictionary of English

  • n. Any of a number plant growth hormones, the first of which was isolated in 1938 from the fungus Gibberella fujikuroi; more than 60 related gibberelins are known. The most important is gibberellin A3, also called gibberellic acid. They are used in agriculture for promoting plant growth.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • n. a plant hormone isolated from a fungus; used in promoting plant growth

Etymologies

From New Latin Gibberella (fujikoroī), the fungus from which gibberellin was first isolated, from Latin gibberella, feminine diminutive of gibber, hump.
(American Heritage® Dictionary of the English Language, Fourth Edition)
From Latin gibber ("hump"). (Wiktionary)

Examples

  • (gibberellin-44) ,2-oxoglutarate: oxygen oxidoreductase Recommended name gibberellin-44 dioxygenase Synonyms (gibberellin-44) ,2-oxoglutarate: oxygen oxidoreductase GA44 oxidase

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  • The embryo also secretes the hormone gibberellin, which stimulates the aleurone cells to produce digestive enzymes as well.

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  • The particular fungus at fault belongs to the genus Gibherella, so the compound was named gibberellin (jib'ur-el'in).

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  • The corn gene contains the hormone gibberellin which stimulates growth in plants.

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  • A small set of genes that are regulated by KAR1, even when germination is prevented by the absence of gibberellin biosynthesis or light, were identified.

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  • The plant at the left, with the most vigorous root system, is the one most deficient in a plant hormone known as gibberellin.

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  • Based on previous studies, we knew that mutant plants that do not respond to gibberellin produce around 100 times the normal amount of gibberellin.

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  • High-school biology textbooks describe auxin, cytokinin, gibberellin, abscisic acid and ethylene as plant hormones.

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  • He obtained his PhD in 1996 from the same university, and subsequently joined the Frontier Research Program at RIKEN researching the identification of gibberellin biosynthesis genes in plants.

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  • Yamaguchi has achieved many breakthroughs in his research on gibberellins, including identification of the genes of enzymes responsible for gibberellin production, elucidation of a gibberellin-induced control mechanism for the germination of seeds, and the discovery of a molecular mechanism that deactivates gibberellins.

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