Articles

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Regulation of Solute Flux Through Plasmodesmata in the Root Meristem (with Heidi L. Rutschow and Eric M. Kramer), Plant Physiology (2011)

Plasmodesmata permit solutes to move between cells nonspecifically and without having to cross a membrane....

 

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Gravitropism of Arabidopsis thaliana Roots Requires the Polarization of PIN2 toward the Root Tip in Meristematic Cortical Cells (with Abidur Rahman, Maho Takahashi, Kyohei Shibasaki, Shuang Wu, Takehito Inaba, and Seiji Tsurumi), Plant Cell (2010)

In the root, the transport of auxin from the tip to the elongation zone, referred...

 

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Two Leucine-Rich Repeat Receptor Kinases Mediate Signaling, Linking Cell Wall Biosynthesis and ACC Synthase in Arabidopsis (with Shou-Ling Xu, Abidur Rahman, and Joseph J. Kieber), Plant Cell (2008)

The plant cell wall is a dynamic structure that changes in response to developmental and...

 

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Intercourse Between Cell Wall and Cytoplasm Exemplified by Arabinogalactan Proteins and Cortical Microtubules (with Azeddine Driouich), American Journal of Botany (2008)

How does a plant cell sense and respond to the status of its cell wall?...

 

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A Conserved Role for Kinesin-5 in Plant Mitosis (with Alex Bannigan, Wolf-Rüdiger Scheible, Wolfgang Lukowitz, Carey Fagerstrom, Patricia Wadsworth, and Chris Somerville), Journal of Cell Science (2007)

The mitotic spindle of vascular plants is assembled and maintained by processes that remain poorly...

 

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Tailor-Made Composite Functions as Tools in Model Choice: the Case of Sigmoidal vs. Bi-linear Growth Profiles (with Winfried S. Peters), Plant Methods (2006)

Background Roots are the classical model system to study the organization and dynamics of organ...

 

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COBRA, an Arabidopsis Extracellular Glycosyl-Phosphatidyl Inositol-Anchored Protein, Specifically Controls Highly Anisotropic Expansion through Its Involvement in Cellulose Microfibril Orientation (with François Roudier, Anita G. Fernandez, Miki Fujita, Regina Himmelspach, Georg H.H. Borner, Gary Schindelman, Shuang Song, Paul Dupree, Geoffrey O. Wasteneys, and Philip N. Benfey), Plant Cell (2005)

The orientation of cell expansion is a process at the heart of plant morphogenesis. Cellulose...

 

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Anisotropic Expansion of the Plant Cell Wall, Annual Review of Cell and Developmental Biology (2005)

Plants shape their organs with a precision demanded by optimal function; organ shaping requires control...

 

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Cell Wall Extension Results in the Coordinate Separation of Parallel Microfibrils: Evidence from Scanning Electron Microscopy and Atomic Force Microscopy (with F. Marga, M. Grandbois, and D.J. Cosgrove), Plant Journal (2005)

Enlargement of the cell wall requires separation of cellulose microfibrils, mediated by proteins such as...

 

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Microtubule-Dependent Microtubule Nucleation Based on Recruitment of G-Tubulin in Higher Plants (with T. Murata, S. Sonobe, S. Hyodo, S. Hasezawa, T. Nagata, T. Horio, and M. Hasebe), Nature Cell Biology (2005)

Despite the absence of a conspicuous microtubule-organizing centre, microtubules in plant cells at interphase are...

 

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Disorganization of Cortical Microtubules Stimulates Tangential Expansion and Reduces the Uniformity of Cellulose Microfibril Alignment Among Cells in the Root of Arabidopsis Thaliana (with G.T.S. Beemster, J.E. Judy-March, and F. Marga), Plant Physiology (2004)

To test the role of cortical microtubules in aligning cellulose microfibrils and controlling anisotropic expansion,...

 

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The Higher Plant Cortical Microtubule Array Analyzed in Vitro in the Presence of the Cell Wall (with G. Tain, D. Smith, and S. Gluck), Cell Motility and the Cytoskeleton (2004)

Plant morphogenesis depends on an array of microtubules in the cell cortex, the cortical array....

 

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Regulation of Root Elongation Under Phosphorus Stress Involves Changes in Ethylene Responsiveness (with Z. Ma, K.M. Brown, and J.P. Lynch), Plant Physiology (2003)

We characterized the growth of the primary root of Arabidopsis under phosphorus sufficiency (1 mm...

 

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A New Algorithm for Computational Image Analysis of Deformable Motion at High Spatial and Temporal Resolution Applied to Root Growth: Roughly Uniform Elongation in the Meristem and also, After an Abrupt Acceleration, in the Elongation Zone (with C.M. van der Weele, H. Jiang, K.K. Palaniappan, and V.B. Ivanov), Plant Physiology (2003)

A requirement for understanding morphogenesis is being able to quantify expansion at the cellular scale....

 

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Aluminum Rapidly Depolymerizes Cortical Microtubules and Depolarizes the Plasma Membrane: Evidence that These Responses are Mediated by a Glutamate Receptor (with M. Sivaguru, S. Pike, and W. Gassmann), Plant and Cell Physiology (2003)

Efforts to understand how plants respond to aluminum have focused on describing the symptoms of...

 

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The Reb1-1 Mutation of Arabidopis Alters the Morphology of Trichoblasts, the Expression of Arabinogalactan-Proteins And the Organization of Cortical Microtubles (with C. AndEme-Onzighi, M. Sivaguru, J. Judy-March, and A. Driouich), Planta (2002)

The root epidermal bulger 1 ( reb1) mutant of Arabidopsis thaliana (L.) Heynh. is characterized...

 

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Mutant Alleles of Arabidopsis RADIALLY SWOLLEN 4 and RSW7 Reduce Growth Anisotropy Without Altering the Transverse Orientation of Cortical Microtubules or Cellulose Microfibrils (with A.M.D. Wiedemeier, J.E. Judy-March, C.H. Hocart, G.O. Wasteneys, and R.E. Williamson), Development (2002)

The anisotropic growth of plant cells depends on cell walls having anisotropic mechanical properties, which...

 

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COBRA Encodes a Putative GPI-Anchored Protein, Which is Polarly Localized and Necessary for Oriented Cell Expansion In Arabidopsis (with G. Schindelman, A. Morikami, J. Jung, N.C. Carpita, P. Derbyshire, M.C. McCann, and P.N. Benfey), Genes and Development (2001)

To control organ shape, plant cells expand differentially. The organization of the cellulose microfibrils in...

 

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On the Alignment of Cellulose Microfibrils by Cortical Microtubules: A Review and a Model, Protoplasma (2001)

The hypothesis that microtubules align microfibrils, termed the alignment hypothesis, states that there is a...

 

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Temperature-Sensitive Alleles of Radially Swollen2 Link the KORRIGAN Endo-1,4-fl-Glucanase to Cellulose Synthesis and Cytokinesis (with D.R. Lane, A. Wiedemeier, L. Peng, H. H^fte, C.H. Hocart, R.J. Birch, J.E. Burn, T. Arioli, A.S. Betzner, and R.E. Williamson), Plant Physiology (2001)

An 8.5-kb cosmid containing the KORRIGAN gene complements the cellulose-deficient rsw2-1 mutant of Arabidopsis. Three...

 

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Growth of Arabidopsis Thaliana Seedlings Under Water Deficit Studied by Control of Water Potential in Nutrient-Agar Media (with C.M. van der Weele, W.G. Spollen, and R.E. Sharp), Journal of Experimental Botany (2000)

We have characterized the growth responses of Arabidopsis thaliana seedlings to water deficit. To manipulate...

 

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On the Constancy of Cell Division Rate in the Root Meristem, Plant Molecular Biology (2000)

This review examines under what circumstances the rate of cell division among cells of the...

 

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STUNTED PLANT 1 Mediates Effects of Cytokinin, but not of Auxin, On Cell Division And Expansion in the Root Of Arabidopsis Thaliana (with G.T.S. Beemster), Plant Physiology (2000)

Plants control organ growth rate by adjusting the rate and duration of cell division and...

 

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Regulation of Growth Anisotropy in Well Watered and Water-Stressed Maize Roots. II. Role of Cortical Microtubules and Cellulose Microfibrils (with H.T.H.M Meekes, B.M Liang, and R.E. Sharp), Plant Physiology (1999)

We tested the hypothesis that the degree of anisotropic expansion of plant tissues is controlled...

 

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The Function of Guard Cells Does Not Require an Intact Array Of Cortical Microtubules (with S.M. Assmann), Journal of Experimental Botany (1998)

The development of stomatal guard cells is known to require cortical microtubules; however, it is...

 

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Analysis of Cell Division and Elongation Underlying the Developmental Acceleration of Root Growth in Arabidopsis Thaliana (with G.T.S. Beemster), Plant Physiology (1998)

To investigate the relation between cell division and expansion in the regulation of organ growth...

 

Contributions to Books

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Non-Rigid Motion Estimation Using the Robust Tensor Method (with K. Palaniappan and H. Jiang), IEEE Computer Vision & Pattern Recognition Workshop on Articulated and Nonrigid Motion (2004)

This paper presents a new technique that couples tensor based image flow with robust statistical...