Plant Physiol.
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on December 12, 2008; 10.1104/pp.108.126938

This Article
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrow All Versions of this Article:
149/2/949    most recent
pp.108.126938v1
Right arrow Alert me when this article is cited
Right arrow Alert me if a correction is posted
Services
Right arrow Email this article to a friend
Right arrow Similar articles in this journal
Right arrow Similar articles in Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Download to citation manager
Right arrow reprints & permissions
Citing Articles
Right arrow Citing Articles via HighWire
Right arrow Citing Articles via CrossRef
Right arrow Citing Articles via Web of Science (2)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Matakiadis, T.
Right arrow Articles by Truong, H.-N.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Matakiadis, T.
Right arrow Articles by Truong, H.-N.
Agricola
Right arrow Articles by Matakiadis, T.
Right arrow Articles by Truong, H.-N.

Received July 24, 2008
Accepted December 9, 2008

The Arabidopsis Abscisic Acid Catabolic Gene CYP707A2 Plays a Key Role in Nitrate Control of Seed Dormancy

Theodoros Matakiadis , Alessandro Alboresi , Yusuke Jikumaru , Kiyoshi Tatematsu , Olivier Pichon , Jean-Pierre Renou , Yuji Kamiya , Eiji Nambara , and Hoai-Nam Truong *

Unite de la Nutrition Azotee des Plantes, IJPB, INRA, 78026 Versailles cedex, France; Growth Regulation Research Group, RIKEN Plant Science Center, 1-7-22 Suehiro-cho, Tsurumi-ku, Yokohama, Japan 230-0045; URGV, INRA, CNRS, 2, rue Gaston Cremieux, CP5708, 91057 Evry cedex

* Corresponding author; email: truong{at}versailles.inra.fr.

Nitrate releases seed dormancy in Arabidopsis thaliana Col-0 seeds in part by reducing abscisic acid (ABA) levels. Nitrate led to lower levels of ABA in imbibed seeds when included in the germination media (exogenous nitrate). Nitrate also reduced ABA levels in dry seeds when provided to the mother plant during seed development (endogenous nitrate). Transcript profiling of imbibed seeds treated with or without nitrate revealed that exogenous nitrate led to a higher expression of nitrate responsive genes whereas endogenous nitrate led to a profile similar to stratified or after-ripened seeds. Profiling experiments indicated that the expression of the ABA catabolic gene CYP707A2 was regulated by exogenous nitrate. The cyp707a2-1 mutant failed to reduce seed ABA levels in response to both endogenous and exogenous nitrate. In contrast both endogenous and exogenous nitrate reduced ABA levels of the wild type and cyp707a1-1 mutant seeds. The CYP707A2 mRNA levels in developing siliques were positively correlated with different nitrate doses applied to the mother plants. This was consistent with a role of the CYP707A2 gene in controlling seed ABA levels in response to endogenous nitrate. The cyp707a2-1 mutant was less sensitive to exogenous nitrate for breaking seed dormancy. Altogether our data underline the central role of the CYP707A2 gene in the nitrate-mediated control of ABA levels during seed development and germination.




This article has been cited by other articles:


Home page
 J Exp BotHome page
T. Gerjets, D. Scholefield, M. J. Foulkes, J. R. Lenton, and M. J. Holdsworth
An analysis of dormancy, ABA responsiveness, after-ripening and pre-harvest sprouting in hexaploid wheat (Triticum aestivum L.) caryopses
J. Exp. Bot., November 18, 2009; (2009) erp329v1.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
J. Preston, K. Tatematsu, Y. Kanno, T. Hobo, M. Kimura, Y. Jikumaru, R. Yano, Y. Kamiya, and E. Nambara
Temporal Expression Patterns of Hormone Metabolism Genes during Imbibition of Arabidopsis thaliana Seeds: A Comparative Study on Dormant and Non-Dormant Accessions
Plant Cell Physiol., October 1, 2009; 50(10): 1786 - 1800.
[Abstract] [Full Text] [PDF]

Home page
 Crop Sci.Home page
J. Wan, R. Griffiths, J. Ying, P. McCourt, and Y. Huang
Development of Drought-Tolerant Canola (Brassica napus L.) through Genetic Modulation of ABA-mediated Stomatal Responses
Crop Sci., August 7, 2009; 49(5): 1539 - 1554.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2008 by the American Society of Plant Biologists