Abstract
The term “auxin” is derived from the Greek word “auxein,” which means “to increase.” Auxins constitute an important group of naturally occurring hormones which have been detected practically in all land plants and in several soil or plant-associated microbes. Naturally occurring auxins include indole-3-acetic acid (IAA), indole-3-butyric acid (IBA), phenyl acetic acid, and 4-chloroindole-3-acetic acid (4-Cl-IAA). Of all these, IAA is the most extensively studied auxin (Fig. 15.1). Chemically, a common feature of all these molecules exhibiting auxin activity is the presence of acidic side chain on the aromatic ring. All the above natural auxins, except for phenyl acetic acid, are also indole derivatives.
This is a preview of subscription content, log in via an institution to check access.
Access this chapter
Tax calculation will be finalised at checkout
Purchases are for personal use only
Further Reading
Paque S, Weijers D (2016) Q&A: Auxin: the plant molecule that influences almost anything. BMC Biol 14:67
Ung KL, Winkler M, Schulz L, Kolb M, Janacek DP, Dedic E, Stokes DL, Hammes UZ, Pedersen BP (2022) Structures and mechanism of the plant PIN-FORMED auxin transporter. Nature 609:605. https://doi.org/10.1038/s41586-022-04883-y
Author information
Authors and Affiliations
Rights and permissions
Copyright information
© 2023 The Author(s), under exclusive license to Springer Nature Singapore Pte Ltd.
About this chapter
Cite this chapter
Bhatla, S.C., Lal, M.A. (2023). Auxins. In: Plant Physiology, Development and Metabolism. Springer, Singapore. https://doi.org/10.1007/978-981-99-5736-1_15
Download citation
DOI: https://doi.org/10.1007/978-981-99-5736-1_15
Published:
Publisher Name: Springer, Singapore
Print ISBN: 978-981-99-5735-4
Online ISBN: 978-981-99-5736-1
eBook Packages: Biomedical and Life SciencesBiomedical and Life Sciences (R0)