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


     

Plant Physiology Preview
Published on June 15, 2006; 10.1104/pp.106.082941

This Article
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow Supplemental Data
Right arrow All Versions of this Article:
141/4/1376    most recent
pp.106.082941v1
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 (17)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Kong, Z.
Right arrow Articles by Xue, Y.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Kong, Z.
Right arrow Articles by Xue, Y.
Agricola
Right arrow Articles by Kong, Z.
Right arrow Articles by Xue, Y.

Received May 2, 2006
Returned for revision June 6, 2006
Accepted June 7, 2006

A Novel Nuclear-Localized CCCH-Type Zinc Finger Protein, OsDOS, Is Involved in Delaying Leaf Senescence in Rice (Oryza sativa L.)

Zhaosheng Kong , Meina Li , Wenqiang Yang , Wenying Xu , and Yongbiao Xue *

Laboratory of Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences and National Centre for Plant Gene Research, Beijing 100080, China; Graduate University of Chinese Academy of Sciences, Beijing, 100049, China; College of Life Sciences, Tianjin Normal University, Tianjin, 300074, China
Laboratory of Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences and National Centre for Plant Gene Research, Beijing 100080, China; Graduate University of Chinese Academy of Sciences, Beijing, 100049, China
Laboratory of Molecular and Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences and National Centre for Plant Gene Research, Beijing 100080, China

* Corresponding author; email: ybxue{at}genetics.ac.cn.

Leaf senescence is a developmentally programmed degeneration process, which is fine-tuned by a complex regulatory network for plant fitness. However, molecular regulation of leaf senescence is poorly understood, especially in rice (Oryza sativa L.), an important staple crop for more than half of the world population. Here, we report a novel nuclear-localized CCCH-type zinc finger protein, OsDOS, involved in delaying leaf senescence in rice. The expression of OsDOS was down-regulated during natural leaf senescence, panicle development and pollination, although its transcripts were accumulated in various organs. RNAi knockdown of OsDOS caused an accelerated age-dependent leaf senescence, whereas its overexpression produced a marked delay of leaf senescence, suggesting that it acts as a negative regulator for leaf senescence. A genome-wide expression analysis further confirmed its negative regulation for leaf senescence and revealed that, in particular, the jasmonate (JA) pathway was found to be hyperactive in the OsDOS RNAi transgenic lines but impaired in the OsDOS overexpressing transgenic lines, indicating that this pathway is likely involved in the OsDOS-mediated delaying of leaf senescence. Furthermore, methyl jasmonate (MeJA) treatments of both seeds and detached leaves from the RNAi and the overexpressing transgenic lines showed hyper- and hypo-responses, respectively, consistent with the negative regulation of the JA pathway by OsDOS. Together, these results indicate that OsDOS is a novel nuclear protein that delays leaf senescence likely, at least in part, by integrating developmental cues to the JA pathway.




This article has been cited by other articles:


Home page
 Mol PlantHome page
D. Albinsky, M. Kusano, M. Higuchi, N. Hayashi, M. Kobayashi, A. Fukushima, M. Mori, T. Ichikawa, K. Matsui, H. Kuroda, et al.
Metabolomic Screening Applied to Rice FOX Arabidopsis Lines Leads to the Identification of a Gene-Changing Nitrogen Metabolism
Mol Plant, August 26, 2009; (2009) ssp069v1.
[Abstract] [Full Text] [PDF]

Home page
 Mol PlantHome page
W.-Q. Yang, Y. Lai, M.-N. Li, W.-Y. Xu, and Y.-B. Xue
A Novel C2-Domain Phospholipid-Binding Protein, OsPBP1, Is Required for Pollen Fertility in Rice
Mol Plant, September 1, 2008; 1(5): 770 - 785.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
S. Farage-Barhom, S. Burd, L. Sonego, R. Perl-Treves, and A. Lers
Expression analysis of the BFN1 nuclease gene promoter during senescence, abscission, and programmed cell death-related processes
J. Exp. Bot., September 1, 2008; 59(12): 3247 - 3258.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
D. H. Kim, S. Yamaguchi, S. Lim, E. Oh, J. Park, A. Hanada, Y. Kamiya, and G. Choi
SOMNUS, a CCCH-Type Zinc Finger Protein in Arabidopsis, Negatively Regulates Light-Dependent Seed Germination Downstream of PIL5
PLANT CELL, May 1, 2008; 20(5): 1260 - 1277.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
C. Wasternack
Jasmonates: An Update on Biosynthesis, Signal Transduction and Action in Plant Stress Response, Growth and Development
Ann. Bot., October 1, 2007; 100(4): 681 - 697.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
J. Sun, H. Jiang, Y. Xu, H. Li, X. Wu, Q. Xie, and C. Li
The CCCH-Type Zinc Finger Proteins AtSZF1 and AtSZF2 Regulate Salt Stress Responses in Arabidopsis
Plant Cell Physiol., August 1, 2007; 48(8): 1148 - 1158.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2006 by the American Society of Plant Biologists