The most important member of the auxin family is indole-3-acetic acid (IAA), [7] which generates the majority of auxin effects in intact plants, and is the most potent native auxin. And as native auxin, its equilibrium is controlled in many ways in plants, from synthesis, through possible conjugation to degradation of its molecules, always ...

生长素（auxin）是一类含有一个不饱和芳香族环和一个乙酸侧链的内源激素，英文简称为IAA，其化学本质是吲哚乙酸。 另外，4-氯-IAA、5-羟-IAA、萘乙酸（NAA）、吲哚丁酸等为类生长素。

May 13, 2018 · An auxin is a plant hormone derived from the amino acid tryptophan. An auxin may be one of many molecules, but all auxin molecules are involved in some sort of cellular regulation. Auxin molecules are one of five major types of plant hormone.

Aug 21, 2021 · This review presents recent advances in understanding the biosynthetic pathways, both dependent and independent of tryptophan, highlighting the intermediate indole compounds (indole-3-acetamide, indole-3-acetaldoxime, indole-3-pyruvic acid and tryptamine) and the key enzymes for auxin biosynthesis, such as YUCs and TAAs.

Auxin, any of a group of plant hormones that regulate growth, particularly by stimulating cell elongation in stems. Auxins also play a role in cell division and differentiation, in fruit development, in the formation of roots from cuttings, in the inhibition of lateral branching, and in leaf abscission.

Sep 20, 2006 · We will highlight recent mutagenesis and molecular studies, which have delineated the pathways of auxin transport, perception and signal transduction, and which together define the roles of...

Background: The phytohormone auxin is critical for plant growth and orchestrates many developmental processes. Scope: This review considers the complex array of mechanisms plants use to control auxin levels, the movement of auxin through the plant, the emerging view of auxin-signalling mechanisms, and several interactions between auxin and ...

Jan 5, 2024 · Auxin is a central hormone regulating plant growth and development, but the cellular sites and molecular mechanisms of auxin perception and signaling remain incompletely understood for...

Aug 10, 2016 · Auxin is an essential molecule that controls almost every aspect of plant development. Although the core signaling components that control auxin response are well characterized, the precise mechanisms enabling specific responses are not yet fully understood.

Auxin biology is among the oldest fields of experimental plant research. Charles Darwin performed early auxin experiments, observing the effects of a hypothetical substance modulating plant shoot elongation to allow tropic growth toward light (Darwin, 1880).