Search results
Results from the WOW.Com Content Network
The gibberellins are named GA 1 through GA n in order of discovery. [5] Gibberellic acid, which was the first gibberellin to be structurally characterized, is GA 3. [6] As of 2020, [5] there are 136 GAs identified from plants, fungi, and bacteria. [1] [6] [5] Gibberellins are tetracyclic diterpene acids. There are two classes, with either 19 or ...
The reaction catalyzed by ent-copalyl diphosphate synthase can be seen as the first committed step in gibberellin biosynthesis. [2] Gibberellins form an important group of plant hormones, with various functions in different species and at different stages of the plant's lifetime. Disorders in gibberellin biosynthesis commonly show themselves as ...
Gibberellic acid (also called gibberellin A3 or GA 3) is a hormone found in plants and fungi. [1] Its chemical formula is C 19 H 22 O 6. When purified, it is a white to pale-yellow solid. Plants in their normal state produce large amounts of GA3. It is possible to produce the hormone industrially using microorganisms. [2]
Paclobutrazol (PBZ) is the ISO common name for an organic compound that is used as a plant growth retardant and triazole fungicide. [2] [3] It is a known antagonist of the plant hormone gibberellin, acting by inhibiting gibberellin biosynthesis, reducing internodal growth to give stouter stems, increasing root growth, causing early fruitset and increasing seedset in plants such as tomato and ...
"Reduced gibberellin response affects ethylene biosynthesis and responsiveness in the Arabidopsis gai eto2-1 double mutant" (PDF). New Phytol . 177 (1): 128–41.
The biosynthesis of plant hormones within plant tissues is often diffuse and not always localized. Plants lack glands to produce and store hormones, because, unlike animals—which have two circulatory systems (lymphatic and cardiovascular) —plants use more passive means to move chemicals around their bodies. Plants utilize simple chemicals ...
Anton Lang showed that several long-day plants and biennials could be made to flower by treatment with gibberellin, even when grown under a non-flower-inducing (or non-inducing) photoperiod. This led to the suggestion that florigen may be made up of two classes of flowering hormones: Gibberellins and Anthesins. [18]
Geranylgeranyl pyrophosphate is an intermediate in the biosynthesis of diterpenes and diterpenoids. [1] It is also the precursor to carotenoids , gibberellins , tocopherols , and chlorophylls . It is also a precursor to geranylgeranylated proteins, which is its primary use in human cells.