The NAC transcription factor RIM1 of rice is a new regulator of jasmonate signaling

The NAC transcription factor RIM1 of rice is a new regulator of jasmonate signaling Summary Jasmonates (JAs) are lipid‐derived regulators that play crucial roles in both host immunity and development. We recently identified the NAC transcription factor RIM1 as a host factor involved in multiplication of rice dwarf virus (RDV). Here, we report that RIM1 functions as a transcriptional regulator of JA signaling and is degraded in response to JA treatment via a 26S proteasome‐dependent pathway. Plants carrying rim1 mutations show a phenotype of root growth inhibition. The expression profiles of the mutants were significantly correlated with those of JA‐treated wild‐type plants without accumulation of endogenous JA, indicating that RIM1 functions as a component of JA signaling. The expression of genes encoding JA biosynthetic enzymes (lipoxygenase (LOX), allene oxide synthase 2 (AOS2) and OPDA reductase 7 (OPR7)) was up‐regulated in the rim1 mutants under normal conditions, and a rapid and massive accumulation of endogenous JA was detected in the mutants after wounding. These results suggest that RIM1 may represent a new molecular link in jasmonate signaling, and may thereby provide new insights into the well‐established coronatine‐insensitive 1 (COI1)‐Jasmonate ZIM‐domain (JAZ) JA signaling pathway. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png The Plant Journal Wiley

The NAC transcription factor RIM1 of rice is a new regulator of jasmonate signaling

Loading next page...
 
/lp/wiley/the-nac-transcription-factor-rim1-of-rice-is-a-new-regulator-of-PsHsG9j1eR
Publisher
Wiley
Copyright
© 2010 The Authors. Journal compilation © 2010 Blackwell Publishing Ltd
ISSN
0960-7412
eISSN
1365-313X
D.O.I.
10.1111/j.1365-313X.2009.04107.x
Publisher site
See Article on Publisher Site

Abstract

Summary Jasmonates (JAs) are lipid‐derived regulators that play crucial roles in both host immunity and development. We recently identified the NAC transcription factor RIM1 as a host factor involved in multiplication of rice dwarf virus (RDV). Here, we report that RIM1 functions as a transcriptional regulator of JA signaling and is degraded in response to JA treatment via a 26S proteasome‐dependent pathway. Plants carrying rim1 mutations show a phenotype of root growth inhibition. The expression profiles of the mutants were significantly correlated with those of JA‐treated wild‐type plants without accumulation of endogenous JA, indicating that RIM1 functions as a component of JA signaling. The expression of genes encoding JA biosynthetic enzymes (lipoxygenase (LOX), allene oxide synthase 2 (AOS2) and OPDA reductase 7 (OPR7)) was up‐regulated in the rim1 mutants under normal conditions, and a rapid and massive accumulation of endogenous JA was detected in the mutants after wounding. These results suggest that RIM1 may represent a new molecular link in jasmonate signaling, and may thereby provide new insights into the well‐established coronatine‐insensitive 1 (COI1)‐Jasmonate ZIM‐domain (JAZ) JA signaling pathway.

Journal

The Plant JournalWiley

Published: Mar 1, 2010

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