Plant Physiol. Tips for Better Browsing
HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
QUICK SEARCH:   [advanced]


     

Plant Physiology Preview
Published on December 30, 2003; 10.1104/pp.103.035519

This Article
Right arrow Full Text (Plant Physiology Preview (PDF))
Right arrow All Versions of this Article:
134/1/296    most recent
pp.103.035519v1
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 (33)
Right arrow Citing Articles via Google Scholar
Google Scholar
Right arrow Articles by Western, T. L.
Right arrow Articles by Haughn, G. W.
Right arrow Search for Related Content
PubMed
Right arrow PubMed Citation
Right arrow Articles by Western, T. L.
Right arrow Articles by Haughn, G. W.
Agricola
Right arrow Articles by Western, T. L.
Right arrow Articles by Haughn, G. W.

Received October 30, 2003
Returned for revision November 12, 2003
Accepted November 20, 2003

MUCILAGE-MODIFIED4 Encodes a Putative Pectin Biosynthetic Enzyme Developmentally Regulated by APETALA2, TRANSPARENT TESTA GLABRA1, and GLABRA2 in the Arabidopsis Seed Coat

Tamara L. Western , Diana S. Young , Gillian H. Dean , Wei Ling Tan , A. Lacey Samuels , and George W. Haughn *

Botany Department, University of British Columbia, 6270 University Boulevard, Vancouver, British Columbia, Canada V6T 1Z4

* Corresponding author; email: haughn{at}interchange.ubc.ca.

The Arabidopsis seed coat epidermis undergoes a complex process of differentiation that includes the biosynthesis and secretion of large quantities of pectinaceous mucilage, cytoplasmic rearrangement, and secondary cell wall biosynthesis. Mutations in MUM4 (MUCILAGE-MODIFIED4) lead to a decrease in seed coat mucilage and incomplete cytoplasmic rearrangement. We show that MUM4 encodes a putative NDP-L-rhamnose synthase, an enzyme required for the synthesis of the pectin rhamnogalacturonan I, the major component of Arabidopsis mucilage. This result suggests that the synthesis of monosaccharide substrates is a limiting factor in the biosynthesis of pectinaceous seed coat mucilage. In addition, the reduced cytoplasmic rearrangement observed in the absence of a key enzyme in pectin biosynthesis in mum4 mutants establishes a causal link between mucilage production and cellular morphogenesis. The cellular phenotype seen in mum4 mutants is similar to that of several transcription factors (AP2 [APETALA2], TTG1 [TRANSPARENT TESTA GLABRA1], TTG2 MYB61, and GL2 [GLABRA2]). Expression studies suggest that MUM4 is developmentally regulated in the seed coat by AP2, TTG1, and GL2, whereas TTG2 and MYB61 appear to be regulating mucilage production through alternate pathway(s). Our results provide a framework for the regulation of mucilage production and secretory cell differentiation.




This article has been cited by other articles:


Home page
 Mol PlantHome page
K. H. Caffall, S. Pattathil, S. E. Phillips, M. G. Hahn, and D. Mohnen
Arabidopsis thaliana T-DNA Mutants Implicate GAUT Genes in the Biosynthesis of Pectin and Xylan in Cell Walls and Seed Testa
Mol Plant, September 2, 2009; (2009) ssp062v1.
[Abstract] [Full Text] [PDF]

Home page
 J Exp BotHome page
A. A. Arsovski, M. M. Villota, O. Rowland, R. Subramaniam, and T. L. Western
MUM ENHANCERS are important for seed coat mucilage production and mucilage secretory cell differentiation in Arabidopsis thaliana
J. Exp. Bot., July 1, 2009; 60(9): 2601 - 2612.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
A. A. Arsovski, T. M. Popma, G. W. Haughn, N. C. Carpita, M. C. McCann, and T. L. Western
AtBXL1 Encodes a Bifunctional {beta}-D-Xylosidase/{alpha}-L-Arabinofuranosidase Required for Pectic Arabinan Modification in Arabidopsis Mucilage Secretory Cells
Plant Physiology, July 1, 2009; 150(3): 1219 - 1234.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
S. F. Li, O. N. Milliken, H. Pham, R. Seyit, R. Napoli, J. Preston, A. M. Koltunow, and R. W. Parish
The Arabidopsis MYB5 Transcription Factor Regulates Mucilage Synthesis, Seed Coat Development, and Trichome Morphogenesis
PLANT CELL, January 1, 2009; 21(1): 72 - 89.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
K. Yonekura-Sakakibara, T. Tohge, F. Matsuda, R. Nakabayashi, H. Takayama, R. Niida, A. Watanabe-Takahashi, E. Inoue, and K. Saito
Comprehensive Flavonol Profiling and Transcriptome Coexpression Analysis Leading to Decoding Gene-Metabolite Correlations in Arabidopsis
PLANT CELL, August 1, 2008; 20(8): 2160 - 2176.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
R. E. Young, H. E. McFarlane, M. G. Hahn, T. L. Western, G. W. Haughn, and A. L. Samuels
Analysis of the Golgi Apparatus in Arabidopsis Seed Coat Cells during Polarized Secretion of Pectin-Rich Mucilage
PLANT CELL, June 1, 2008; 20(6): 1623 - 1638.
[Abstract] [Full Text] [PDF]

Home page
 ANN BOT (LOND)Home page
Z. Huang, I. Boubriak, D. J. Osborne, M. Dong, and Y. Gutterman
Possible Role of Pectin-containing Mucilage and Dew in Repairing Embryo DNA of Seeds Adapted to Desert Conditions
Ann. Bot., January 1, 2008; 101(2): 277 - 283.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
A. Macquet, M.-C. Ralet, O. Loudet, J. Kronenberger, G. Mouille, A. Marion-Poll, and H. M. North
A Naturally Occurring Mutation in an Arabidopsis Accession Affects a {beta}-D-Galactosidase That Increases the Hydrophilic Potential of Rhamnogalacturonan I in Seed Mucilage
PLANT CELL, December 1, 2007; 19(12): 3990 - 4006.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
G. H. Dean, H. Zheng, J. Tewari, J. Huang, D. S. Young, Y. T. Hwang, T. L. Western, N. C. Carpita, M. C. McCann, S. D. Mansfield, et al.
The Arabidopsis MUM2 Gene Encodes a {beta}-Galactosidase Required for the Production of Seed Coat Mucilage with Correct Hydration Properties
PLANT CELL, December 1, 2007; 19(12): 4007 - 4021.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
R. Kumar, K. Kushalappa, D. Godt, M. S. Pidkowich, S. Pastorelli, S. R. Hepworth, and G. W. Haughn
The Arabidopsis BEL1-LIKE HOMEODOMAIN Proteins SAW1 and SAW2 Act Redundantly to Regulate KNOX Expression Spatially in Leaf Margins
PLANT CELL, September 1, 2007; 19(9): 2719 - 2735.
[Abstract] [Full Text] [PDF]

Home page
 Plant Cell PhysiolHome page
A. Macquet, M.-C. Ralet, J. Kronenberger, A. Marion-Poll, and H. M. North
In situ, Chemical and Macromolecular Study of the Composition of Arabidopsis thaliana Seed Coat Mucilage
Plant Cell Physiol., July 1, 2007; 48(7): 984 - 999.
[Abstract] [Full Text] [PDF]

Home page
 J. Biol. Chem.Home page
T. Oka, T. Nemoto, and Y. Jigami
Functional Analysis of Arabidopsis thaliana RHM2/MUM4, a Multidomain Protein Involved in UDP-D-glucose to UDP-L-rhamnose Conversion
J. Biol. Chem., February 23, 2007; 282(8): 5389 - 5403.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
A. Diet, B. Link, G. J. Seifert, B. Schellenberg, U. Wagner, M. Pauly, W.-D. Reiter, and C. Ringli
The Arabidopsis Root Hair Cell Wall Formation Mutant lrx1 Is Suppressed by Mutations in the RHM1 Gene Encoding a UDP-L-Rhamnose Synthase
PLANT CELL, July 1, 2006; 18(7): 1630 - 1641.
[Abstract] [Full Text] [PDF]

Home page
 Plant CellHome page
S. R. Hepworth, Y. Zhang, S. McKim, X. Li, and G. W. Haughn
BLADE-ON-PETIOLE-Dependent Signaling Controls Leaf and Floral Patterning in Arabidopsis
PLANT CELL, May 1, 2005; 17(5): 1434 - 1448.
[Abstract] [Full Text] [PDF]

Home page
 Plant Physiol.Home page
B. Usadel, A. M. Kuschinsky, M. G. Rosso, N. Eckermann, and M. Pauly
RHM2 Is Involved in Mucilage Pectin Synthesis and Is Required for the Development of the Seed Coat in Arabidopsis
Plant Physiology, January 1, 2004; 134(1): 286 - 295.
[Abstract] [Full Text] [PDF]


HOME HELP FEEDBACK SUBSCRIPTIONS ARCHIVE SEARCH
ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 2003 by the American Society of Plant Biologists