Auxin and ethylene: collaborators or competitors?

The individual roles of auxin and ethylene in controlling the growth and development of young seedlings have been well studied. In recent years, these two hormones have been shown to act synergistically to control specific growth and developmental processes, such as root elongation and root hair for...

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Bibliographic Details
Published in:Trends in plant science 2012-04, Vol.17 (4), p.181-195
Main Authors: Muday, Gloria K., Rahman, Abidur, Binder, Brad M.
Format: Article
Language:English
Subjects:
auxins
Biological and medical sciences
Biological Transport
ethylene
Ethylenes - metabolism
Fundamental and applied biological sciences. Psychology
growth and development
Indoleacetic Acids - metabolism
Plant Development
Plant Growth Regulators - metabolism
Plants - metabolism
root growth
root hairs
seedling growth
Signal Transduction
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Summary:The individual roles of auxin and ethylene in controlling the growth and development of young seedlings have been well studied. In recent years, these two hormones have been shown to act synergistically to control specific growth and developmental processes, such as root elongation and root hair formation, as well as antagonistically in other processes, such as lateral root formation and hypocotyl elongation. This review examines the growth and developmental processes that are regulated by crosstalk between these two hormones and explores the mechanistic basis for the regulation of these processes. The emerging trend from these experiments is that ethylene modulates auxin synthesis, transport, and signaling with unique targets and responses in a range of tissues to fine-tune seedling growth and development.
ISSN:1360-1385
1878-4372
DOI:10.1016/j.tplants.2012.02.001