gibberellin


Also found in: Dictionary, Thesaurus, Medical, Wikipedia.
Related to gibberellin: abscisic acid, auxin, cytokinin

gibberellin

[‚jib·ə′rel·ən]
(biochemistry)
Any member of a family of naturally derived compounds which have a gibbane skeleton and a broad spectrum of biological activity but are noted as plant growth regulators.
References in periodicals archive ?
Chlorophyll degradation in leaves of cut flowers is controlled by gibberellins [27], on the other hand, cytokinins prevent leaves senescence and delay proteolysis and chlorophyll degradation [6,28].
The new research shows that mutant plants that do not produce gibberellin are unable to increase their cell production rate and the size of the root meristem, the zone of cell proliferation.
In addition, the group has confirmed that gibberellin is excessively accumulated in the eui mutant.
After the initiation of an apical notch, gametophytes of a few fern families promote out-crossing by producing antheridiogen, a gibberellin related pheromone that induces precious maleness in notchless neighbors.
Structure of new gibberellin glucoside in immature seeds of Pharbitis nil.
Inactivity of some acetone condensation products and candicandiols A and B in gibberellin bioassays.
According to Waaland (1981), the advantages of algae as a biofertilizer are that they: (1) are free of weed seeds and fungal spores which can harm terrestrial crops, (2) are good sources of trace elements, and (3) can regulate crop growth and ripening because of the auxin, cytokinin, and gibberellin associated with them.
A similar enzyme in peanuts, also inactivated by these compounds, inhibits production of the plant growth hormone, gibberellin.
For instance, right now we have discovered a part of a Gibberellin chain that stimulates profuse flower production that initially cost $19,000 USD per gram to make.