Skip Navigation


JXB Advance Access originally published online on May 23, 2006
Journal of Experimental Botany 2006 57(8):1645-1655; doi:10.1093/jxb/erl010
This Article
Right arrow Full Text Freely available
Right arrow FREE Full Text (PDF) Freely available
Right arrow All Versions of this Article:
57/8/1645    most recent
erl010v1
Right arrow E-letters: Submit a response
Right arrow Alert me when this article is cited
Right arrow Alert me when E-letters are posted
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 ISI Web of Science
Right arrow Similar articles in PubMed
Right arrow Alert me to new issues of the journal
Right arrow Add to My Personal Archive
Right arrow Download to citation manager
Right arrow Search for citing articles in:
ISI Web of Science (6)
Right arrowRequest Permissions
Right arrow Disclaimer
Google Scholar
Right arrow Articles by Olmos, E
Right arrow Articles by Foyer, C.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Olmos, E
Right arrow Articles by Foyer, C.
Agricola
Right arrow Articles by Olmos, E
Right arrow Articles by Foyer, C.
Social Bookmarking
Add to CiteULike   Add to Connotea   Add to Del.icio.us  
What's this?

© The Author [2006]. Published by Oxford University Press [on behalf of the Society for Experimental Biology]. All rights reserved. For Permissions, please e-mail: journals.permissions@oxfordjournals.org

RESEARCH PAPER

Modulation of plant morphology, root architecture, and cell structure by low vitamin C in Arabidopsis thaliana

E Olmos *, G Kiddle, TK Pellny, S Kumar {dagger} and CH Foyer{ddagger}

Crop Performance and Improvement Division, Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ, UK

{ddagger}To whom correspondence should be addressed. E-mail: christine.foyer{at}bbsrc.ac.uk

Ascorbic acid (AA) fulfils many essential functions in plants. It is a key antioxidant and an important reducing substrate for a number of enzymes. The effects of low AA on plant architecture and leaf ultrastructure were studied in Arabidopsis thaliana mutants, which have constitutively moderately low (vtc1) or very low (vtc2) leaf AA contents compared with the wild type. Shoot development was comparable in all accessions over the first 14 d of growth. The production of primary roots was slightly different in vtc1, vtc2, and wild-type plants. However, the most notable difference was that a high proportion of the primary roots of the vtc2 plants grown on soil had lost the wild-type responses to gravity. The vtc mutants showed the antagonistic interaction between nitrate and sugar in the regulation of lateral root (LR) development that was observed in the wild type. However, the vtc2 mutants produced greater numbers of longer LRs than wild-type or vtc1 plants at all levels of nitrate. At later stages of development, the vtc rosettes were smaller than those of the wild type and the leaves showed intracellular structural changes that are consistent with programmed cell death (PCD). PCD symptoms such as nuclear chromatin condensation, the presence of multivesicular bodies, and extensive degradation and disorganization of the grana stacks were observed in 8-week-old vtc2 leaves and in 10-week-old vtc1 leaves. The data presented here illustrate the importance of tissue AA contents in regulating whole plant morphology, cell structure, and development.

Key words: Ascorbate deficiency, chloroplast structure, lateral root growth, plant architecture, programmed cell death


Add to CiteULike CiteULike   Add to Connotea Connotea   Add to Del.icio.us Del.icio.us    What's this?


This article has been cited by other articles:


Home page
 J Exp BotHome page
A. Nunes-Nesi, R. Sulpice, Y. Gibon, and A. R. Fernie
The enigmatic contribution of mitochondrial function in photosynthesis
J. Exp. Bot., May 1, 2008; 59(7): 1675 - 1684.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. J. Morgan, M. Lehmann, M. Schwarzlander, C. J. Baxter, A. Sienkiewicz-Porzucek, T. C.R. Williams, N. Schauer, A. R. Fernie, M. D. Fricker, R. G. Ratcliffe, et al.
Decrease in Manganese Superoxide Dismutase Leads to Reduced Root Growth and Affects Tricarboxylic Acid Cycle Flux and Mitochondrial Redox Homeostasis
Plant Physiology, May 1, 2008; 147(1): 101 - 114.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
S. Lee, Y.-M. Woo, S.-I. Ryu, Y.-D. Shin, W. T. Kim, K. Y. Park, I.-J. Lee, and G. An
Further Characterization of a Rice AGL12 Group MADS-Box Gene, OsMADS26
Plant Physiology, May 1, 2008; 147(1): 156 - 168.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
M. Alhagdow, F. Mounet, L. Gilbert, A. Nunes-Nesi, V. Garcia, D. Just, J. Petit, B. Beauvoit, A. R. Fernie, C. Rothan, et al.
Silencing of the Mitochondrial Ascorbate Synthesizing Enzyme L-Galactono-1,4-Lactone Dehydrogenase Affects Plant and Fruit Development in Tomato
Plant Physiology, December 1, 2007; 145(4): 1408 - 1422.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
V. G. Maurino, E. Grube, J. Zielinski, A. Schild, K. Fischer, and U.-I. Flugge
Identification and Expression Analysis of Twelve Members of the Nucleobase-Ascorbate Transporter (NAT) Gene Family in Arabidopsis thaliana
Plant Cell Physiol., October 1, 2006; 47(10): 1381 - 1393.
[Abstract] [Full Text] [PDF]


Disclaimer:
Please note that abstracts for content published before 1996 were created through digital scanning and may therefore not exactly replicate the text of the original print issues. All efforts have been made to ensure accuracy, but the Publisher will not be held responsible for any remaining inaccuracies. If you require any further clarification, please contact our Customer Services Department.