Protein phosphorylation in the delivery of and response to auxin signals

Protein phosphorylation in the delivery of and response to auxin signals The importance of reversible protein phosphorylation in regulation of plant growth and development has been amply demonstrated by decades of research. Here we discuss recent studies that suggest roles for protein phosphorylation in regulation of both auxin responses and polar auxin transport. Specific kinases act at auxin-requiring steps in floral and embryonic development, and at the junction(s) between light and auxin signaling pathways in hypocotyl elongation and phototropism responses. New evidence for rapid mitogen-activated protein kinase (MAPK) activation by auxin treatment suggests that MAPK cascade(s) might mediate cellular responses to auxin. Protein phosphorylation also may play a crucial role in regulating the activity or turnover of auxin-responsive transcription factors. Auxin transport is modulated by phosphorylation, and protein phosphatase activity is involved in regulation of auxin transport streams in roots. Although the regulatory circuits have not been fully elucidated, these studies suggest that protein phosphorylating and dephosphorylating enzymes perform key functions in auxin biology. In some cases, these enzymes act at the intersections between auxin signaling and other signaling pathways. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Plant Molecular Biology Springer Journals

Protein phosphorylation in the delivery of and response to auxin signals

Loading next page...
 
/lp/springer_journal/protein-phosphorylation-in-the-delivery-of-and-response-to-auxin-xz8yOHJI5o
Publisher
Springer Journals
Copyright
Copyright © 2002 by Kluwer Academic Publishers
Subject
Life Sciences; Biochemistry, general; Plant Sciences; Plant Pathology
ISSN
0167-4412
eISSN
1573-5028
D.O.I.
10.1023/A:1015246828230
Publisher site
See Article on Publisher Site

Abstract

The importance of reversible protein phosphorylation in regulation of plant growth and development has been amply demonstrated by decades of research. Here we discuss recent studies that suggest roles for protein phosphorylation in regulation of both auxin responses and polar auxin transport. Specific kinases act at auxin-requiring steps in floral and embryonic development, and at the junction(s) between light and auxin signaling pathways in hypocotyl elongation and phototropism responses. New evidence for rapid mitogen-activated protein kinase (MAPK) activation by auxin treatment suggests that MAPK cascade(s) might mediate cellular responses to auxin. Protein phosphorylation also may play a crucial role in regulating the activity or turnover of auxin-responsive transcription factors. Auxin transport is modulated by phosphorylation, and protein phosphatase activity is involved in regulation of auxin transport streams in roots. Although the regulatory circuits have not been fully elucidated, these studies suggest that protein phosphorylating and dephosphorylating enzymes perform key functions in auxin biology. In some cases, these enzymes act at the intersections between auxin signaling and other signaling pathways.

Journal

Plant Molecular BiologySpringer Journals

Published: Oct 13, 2004

References

You’re reading a free preview. Subscribe to read the entire article.


DeepDyve is your
personal research library

It’s your single place to instantly
discover and read the research
that matters to you.

Enjoy affordable access to
over 18 million articles from more than
15,000 peer-reviewed journals.

All for just $49/month

Explore the DeepDyve Library

Search

Query the DeepDyve database, plus search all of PubMed and Google Scholar seamlessly

Organize

Save any article or search result from DeepDyve, PubMed, and Google Scholar... all in one place.

Access

Get unlimited, online access to over 18 million full-text articles from more than 15,000 scientific journals.

Your journals are on DeepDyve

Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.

All the latest content is available, no embargo periods.

See the journals in your area

DeepDyve

Freelancer

DeepDyve

Pro

Price

FREE

$49/month
$360/year

Save searches from
Google Scholar,
PubMed

Create lists to
organize your research

Export lists, citations

Read DeepDyve articles

Abstract access only

Unlimited access to over
18 million full-text articles

Print

20 pages / month

PDF Discount

20% off