Gibberellins in plants - opinion, this
Vedantu academic counsellor will be calling you shortly for your Online Counselling session. Gibberellins In Plants. Bookmark added to your notes. Chemical formula C 19 H 22 O 6 Molar mass The first step into the understanding of Gibberellins was the developments from the plant pathology field, with research on the bakanae , or "foolish seedling" sickness in rice. gibberellins in plants
The Gibberellins are plant hormones or phytohormones involved in different processes of growth and development of higher plants.
In fact, they stimulate the growth and elongation of the stem, the development of the fruits and the germination of seeds. Its discovery was made in the mids by Japanese researchers studying the abnormal growth of rice plants.
Free forms
The name gibberellin comes from the Gibbereplins funjikuroi fungus, an organism from which it was initially extracted, the causal agent of the "Bakanae" disease. Despite the fact that more than gibberellins have been identified, very few show physiological activity. Only gibberellin A 3 or gibberellic acid, and gibberellins A 1A 4 and A 7 are of commercial importance. These phytohormones promote surprising changes in gibberellins in plants size, in addition to inducing cell division in leaves and stems.
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The visible effect of its exogenous planfs is the elongation of thin stems, fewer branches and fragile leaves. The structure of gibberellins is the result of the union of five-carbon isoprenoids that together form a four-ring molecule. Its classification depends on the biological activity. It corresponds to those substances gibberellins in plants from the ent-Kauren, whose fundamental structure is the ent-giberelano. They are classified as acidic diterpenoids derived from the heterocyclic hydrocarbon ent-Kaureno.
Gibberellins In Plants: Definition & Function
Two types of free forms are known. They are those gibberellins that are associated with carbohydrates, so they do not have biological activity. The main function of gibberellins is the induction of growth and elongation of plant structures.
The physiological mechanism that allows elongation is related to changes in endogenous gjbberellins concentration at the cellular level. The application of gibberellins favors the development of the flowering and inflorescences of various species, especially in long-day plants PDL. Source with phytochromes, they present a synergistic effect, stimulating the differentiation of floral structures, such as petals, stamens or carpels, during flowering.]
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