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Comment
. 2013 Jun 25:2:e00958.
doi: 10.7554/eLife.00958.

When the time is ripe

Siobhan M Brady  1
Affiliations
Comment

When the time is ripe

Siobhan M Brady. Elife. .

Abstract

The diverse effects of the plant hormone ethylene on development and growth are shaped by the actions of a master regulator of transcription, EIN3.

Keywords: Arabidopsis; ethylene; hormone; network; plant biology; temporal modulation; transcriptional regulation.

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Conflict of interest statement

Competing interests:The author declares that no competing interests exist.

Figures

Figure 1.
Figure 1.
The transcription factor EIN3 is a master regulator of transcription, and acts through multiple feedback and feedforward regulatory mechanisms. (A) The plant hormone ethylene increases the activity of EIN3. However, EIN3 in turn promotes the expression of proteins that inhibit the response to ethylene via a feedback loop. (B) EIN3 acts both directly and indirectly to increase the expression of its target genes. The indirect feedforward loop involves increased expression of receptors for another plant hormone, gibberellic acid (GID1B/1C). These in turn activate the transcription factor PIF3, which increases expression of EIN3 target genes. (C) The background image shows wildtype Arabidopsis thaliana (left) alongside plants with mutations in one (middle) or four (right) EIN3 target genes (adapted from Figure 4F from Ecker et al., 2013).
See this image and copyright information in PMC

Comment on

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