Auxins (plural of auxin / ˈɔːksɪn /) are a class of plant hormones (or plant-growth regulators) with some morphogen -like characteristics. Auxins play a cardinal role in coordination of many growth and behavioral processes in plant life cycles and are essential for plant body development.

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。

2021年8月21日 · Auxins are plant hormones that play a central role in controlling plant growth and development across different environmental conditions. Even at low concentrations, auxins can regulate gene expression through specific transcription factors and proteins that are modulated to environmental responses in the signalling cascade.

2018年5月13日 · 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.

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.

2024年1月5日 · 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...

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 ...

2006年9月20日 · Auxins form a class of small indolic plant growth regulators that was initially identified as the motile stimulus that causes plants to bend towards the light. Auxins have profound effects on...

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).

2016年8月10日 · 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.