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Hangzhou Fuluo Biological Technology Co.,Ltd.
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90% Agricultural Grade GA powder,Gibberellin hot in Italy CAS 77-06-5

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90% Agricultural Grade GA powder,Gibberellin hot in Italy CAS 77-06-5

Brand Name : YC
Model Number : 77-06-5
Certification : ISO9001
Place of Origin : China
MOQ : 100 grams
Price : Negotiated Price
Payment Terms : T/T, Western Union, MoneyGram,Bitcoin
Supply Ability : 5000kg/Month
Delivery Time : Within 3-7 working days
Packaging Details : As Requires
Product Name : gibberellin
CAS : 77-06-5
EINECS : 201-001-0
Molecular formula : C19H22O6
Molecular weight : 346.37
Application : agricultural use
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90% Agricultural Grade GA powder,Gibberellin hot in Italy CAS 77-06-5


Product Namegibberellin
CAS No.77-06-5
EINECS No.201-001-0
Molecular FormulaC19H22O6
Molecular Weight346.37
Melting point227 °C
Applicationagricultural use

Gibberellins (GAs) are plant hormones that regulate growth and influence various developmental processes, including stem elongation, germination, dormancy, flowering, sex expression, enzyme induction, and leaf and fruit senescence.


Chemistry


All known gibberellins are diterpenoid acids that are synthesized by the terpenoid pathway in plastids and then modified in the endoplasmic reticulum and cytosol until they reach their biologically-active form. All gibberellins are derived via the ent-gibberellane skeleton, but are synthesised via ent-kaurene. The gibberellins are named GA1 through GAn in order of discovery. Gibberellic acid, which was the first gibberellin to be structurally characterized, is GA3.


GA has a number of effects on plant growth, but the most dramatic is its effect on stem growth. When applied in low concentrations to a bush or "dwarf" bean, the stem begins to grow rapidly. The length of the internodes becomes so great that the plant becomes indistinguishable from climbing or "pole" beans. GA seems to overcome the genetic limitations in many dwarf varieties.


Biological function


Gibberellins are involved in the natural process of breaking dormancy and other aspects of germination. Before the photosynthetic apparatus develops sufficiently in the early stages of germination, the stored energy reserves of starch nourish the seedling. Usually in germination, the breakdown of starch to glucose in the endosperm begins shortly after the seed is exposed to water. Gibberellins in the seed embryo are believed to signal starch hydrolysis through inducing the synthesis of the enzyme α-amylase in the aleurone cells.


In the model for gibberellin-induced production of α-amylase, it is demonstrated that gibberellins (denoted by GA) produced in the scutellum diffuse to the aleurone cells, where they stimulate the secretion α-amylase. α-Amylase then hydrolyses starch, which is abundant in many seeds, into glucose that can be used in cellular respiration to produce energy for the seed embryo. Studies of this process have indicated gibberellins cause higher levels of transcription of the gene coding for the α-amylase enzyme, to stimulate the synthesis of α-amylase.


Gibberellins are produced in greater mass when the plant is exposed to cold temperatures. They stimulate cell elongation, breaking and budding, seedless fruits, and seed germination. They do the last by breaking the seed’s dormancy and acting as a chemical messenger. Its hormone binds to a receptor, and Ca2+ activates the protein calmodulin, and the complex binds to DNA, producing an enzyme to stimulate growth in the embryo.


A major effect of gibberellins is the degradation of DELLA proteins, the absence of which then allows phytochrome interacting factors to bind to gene promoters and regulate gene expression.Gibberellins are thought to cause DELLAs to become polyubiquitinated and, thus, destroyed by the 26S proteasome pathway.

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