Auxin - Wikipedia
WEBOverview. Auxins were the first of the major plant hormones to be discovered. They derive their name from the Greek word αυξειν ( auxein – "to grow/increase"). Auxin is present in all parts of a plant, although in very different concentrations.
Auxin | Definition, Functions, & Uses | Britannica
WEBauxin, 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 (apical dominance), and in leaf fall (abscission).
Auxin (Plant): Definition, Function and Structure - Biology Dictionary
WEBMay 13, 2018 · Auxin Definition. 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. The other major groups are the gibberellins, cytokinins, ethylene, and abscisic …
Auxin and its role in plant development: structure, signalling ...
WEBAug 21, 2021 · 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 ….
Q&A: Auxin: the plant molecule that influences almost anything
WEBAug 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 …
Roles of Auxin in the Growth, Development, and Stress Tolerance …
WEBSep 5, 2022 · Auxin, a plant hormone, regulates virtually every aspect of plant growth and development. Many current studies on auxin focus on the model plant Arabidopsis thaliana, or on field crops, such as rice and wheat. There are relatively few studies on what role auxin plays in various physiological processes of a range of horticultural plants.
Auxin in action: signalling, transport and the control of plant …
WEBSep 20, 2006 · The phytohormone that best fits the classical definition of a hormone is auxin as it is transported between its site of synthesis and site of action. This transport is mediated by several...
Auxin: Regulation, Action, and Interaction - PMC - National …
WEBMar 4, 2005 · Auxin: Regulation, Action, and Interaction. ANDREW W. WOODWARD and BONNIE BARTEL * Author information Article notes Copyright and License information PMC Disclaimer. Go to: Abstract. • Background The phytohormone auxin is critical for plant growth and orchestrates many developmental processes.
Auxin and other signals on the move in plants - Nature
WEBApr 17, 2009 · Auxin and other signals on the move in plants. Hélène S Robert & Jiří Friml. Nature Chemical Biology 5 , 325–332 ( 2009) Cite this article. 4105 Accesses. 176 Citations. Metrics. Abstract. As...
4.4.1: Auxin - Biology LibreTexts
WEBThe most important auxin produced by plants is indole-3-acetic acid (IAA). It undergoes both polar (unidirectional) and nonpolar transport. Key functions include mediating tropisms, growth and …
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