New roles for the Arabidopsis TAO1 gene besides disease resistance

New roles for the Arabidopsis TAO1 gene besides disease resistance Target of AvrB Operation (TAO1) is a TIR-NB-LRR disease resistance protein that responds to avirulence gene B (avrB). However, whether TAO1 plays a role in Arabidopsis thaliana development and/or abiotic stress is unknown. Here, we found that TAO1 expression is regulated in a tissue-specific manner, and that TAO1 protein is localized to both the plasma membrane and chloroplasts. Moreover, we showed that three tao1 T-DNA insertion mutants had no significant abnormal phenotype. However, we found that TAO1 expression was up-regulated by ethylene precursor ACC and auxin NAA, but down-regulated by ethylene inhibitor AgNO3 and auxin inhibitor NPA, suggesting that TAO1 is coordinately regulated by ethylene and auxin. We also found that endogenous ethylene production decreased in TAO1-overexpression lines, but increased in the tao1-10 T-DNA mutant line compared to the wild type, suggesting that TAO1 may be a negative regulator of ethylene signaling. These novel characteristics shed new light on the role(s) of TAO1 in Arabidopsis independent of its role in disease resistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Russian Journal of Plant Physiology Springer Journals

New roles for the Arabidopsis TAO1 gene besides disease resistance

Loading next page...
 
/lp/springer_journal/new-roles-for-the-arabidopsis-tao1-gene-besides-disease-resistance-p06fSEZS12
Publisher
Pleiades Publishing
Copyright
Copyright © 2015 by Pleiades Publishing, Ltd.
Subject
Life Sciences; Plant Physiology; Plant Sciences
ISSN
1021-4437
eISSN
1608-3407
D.O.I.
10.1134/S1021443715040196
Publisher site
See Article on Publisher Site

Abstract

Target of AvrB Operation (TAO1) is a TIR-NB-LRR disease resistance protein that responds to avirulence gene B (avrB). However, whether TAO1 plays a role in Arabidopsis thaliana development and/or abiotic stress is unknown. Here, we found that TAO1 expression is regulated in a tissue-specific manner, and that TAO1 protein is localized to both the plasma membrane and chloroplasts. Moreover, we showed that three tao1 T-DNA insertion mutants had no significant abnormal phenotype. However, we found that TAO1 expression was up-regulated by ethylene precursor ACC and auxin NAA, but down-regulated by ethylene inhibitor AgNO3 and auxin inhibitor NPA, suggesting that TAO1 is coordinately regulated by ethylene and auxin. We also found that endogenous ethylene production decreased in TAO1-overexpression lines, but increased in the tao1-10 T-DNA mutant line compared to the wild type, suggesting that TAO1 may be a negative regulator of ethylene signaling. These novel characteristics shed new light on the role(s) of TAO1 in Arabidopsis independent of its role in disease resistance.

Journal

Russian Journal of Plant PhysiologySpringer Journals

Published: Jun 17, 2015

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