Table of Contents
What are precursor and bound Auxins?
The compounds, which can be converted into auxins, are called auxin precursors. The compounds, which inhibit the actions of auxins, are termed anti-auxins. And auxins, which are hard to extract and need the use of organic solvents, are referred to as bound auxins.
Who is the precursor of cytokinin?
Furfural, a precursor of the cytokinin hormone kinetin, and base propenals are formed by hydroxyl radical damage of DNA.
What is the precursor of gibberellins?
Emission of ent-kaurene, a diterpenoid hydrocarbon precursor for gibberellins, into the headspace from plants.
Is IPA natural auxin?
Indole-3-acetic acid (IAA), the main naturally occurring auxin, is essential for almost every aspect of plant growth and development. Trp is first converted to indole-3-pyruvate (IPA) by the TAA family of amino transferases and subsequently IAA is produced from IPA by the YUC family of flavin monooxygenases.
What are plant auxins?
auxin, any of a group of plant hormones that regulate growth, particularly by stimulating cell elongation in stems.
What are synthetic auxins?
Synthetic auxin herbicides bind to hormone receptors in plant cells and cause a chain of events within the plant that lead to rapid and uncontrolled growth. Synthetic auxin herbicides are systemic, meaning they. move both from roots to shoots and shoots to roots.
Is precursor for abscisic acid?
Zeaxanthin is the first committed ABA precursor; a series of enzyme-catalyzed epoxidations and isomerizations via violaxanthin, and final cleavage of the C40 carotenoid by a dioxygenation reaction yields the proximal ABA precursor, xanthoxin, which is then further oxidized to ABA.
What is the precursor of abscisic acid?
Zeaxanthin is the first committed ABA precursor; a series of enzyme-catalyzed epoxidations and isomerizations via violaxanthin, and final cleavage of the C40 carotenoid by a dioxygenation reaction yields the proximal ABA precursor, xanthoxin, which is then further oxidized to ABA. via abscisic aldehyde.
Where auxin is synthesized?
Auxin, is a naturally occurring plant hormone involved in stem elongation. It is synthesized at the tip of the shoot, stem apices. They are produced in the buds, stems and root tips.
How is auxin synthesized?
lndole-3-acetic acid (IAA), the most important natural auxin in plants, is mainly synthesized from the amino acid tryptophan (Trp). IPA then undergoes oxidative decarboxylation catalyzed by the YUCCA (YUC) family of flavin monooxygenases to produce IAA.