An Arabidopsis gene regulatory network for secondary cell wall synthesis

M. Taylor-Teeples, L. Lin, M. de Lucas, G. Turco, T. W. Toal, A. Gaudinier, N. F. Young, G. M. Trabucco, M. T. Veling, R. Lamothe, P. P. Handakumbura, G. Xiong, C. Wang, J. Corwin, A. Tsoukalas, L. Zhang, D. Ware, M. Pauly, D. J. Kliebenstein, K. Dehesh, I. Tagkopoulos, G. Breton, J. L. Pruneda-Paz, S. E. Ahnert, S. A. Kay, S. P. Hazen () and S. M. Brady ()
Additional contact information
M. Taylor-Teeples: University of California Davis, One Shields Avenue, Davis, California 95616, USA
L. Lin: University of Massachusetts
M. de Lucas: University of California Davis, One Shields Avenue, Davis, California 95616, USA
G. Turco: University of California Davis, One Shields Avenue, Davis, California 95616, USA
T. W. Toal: University of California Davis, One Shields Avenue, Davis, California 95616, USA
A. Gaudinier: University of California Davis, One Shields Avenue, Davis, California 95616, USA
N. F. Young: University of Massachusetts
G. M. Trabucco: University of Massachusetts
M. T. Veling: University of Massachusetts
R. Lamothe: University of Massachusetts
P. P. Handakumbura: University of Massachusetts
G. Xiong: University of California Berkeley
C. Wang: University of California Davis, One Shields Avenue, Davis, California 95616, USA
J. Corwin: University of California Davis, One Shields Avenue, Davis, California 95616, USA
A. Tsoukalas: Genome Center, University of California Davis, One Shields Avenue, Davis, California 95616, USA
L. Zhang: Cold Spring Harbor Laboratory
D. Ware: Cold Spring Harbor Laboratory
M. Pauly: University of California Berkeley
D. J. Kliebenstein: University of California Davis, One Shields Avenue, Davis, California 95616, USA
K. Dehesh: University of California Davis, One Shields Avenue, Davis, California 95616, USA
I. Tagkopoulos: Genome Center, University of California Davis, One Shields Avenue, Davis, California 95616, USA
G. Breton: Section of Cell and Developmental Biology, University of California San Diego
J. L. Pruneda-Paz: Section of Cell and Developmental Biology, University of California San Diego
S. E. Ahnert: Theory of Condensed Matter Group, Cavendish Laboratory, University of Cambridge, Cambridge CB3 0HE, UK
S. A. Kay: Section of Cell and Developmental Biology, University of California San Diego
S. P. Hazen: University of Massachusetts
S. M. Brady: University of California Davis, One Shields Avenue, Davis, California 95616, USA

Nature, 2015, vol. 517, issue 7536, 571-575

Abstract: Abstract The plant cell wall is an important factor for determining cell shape, function and response to the environment. Secondary cell walls, such as those found in xylem, are composed of cellulose, hemicelluloses and lignin and account for the bulk of plant biomass. The coordination between transcriptional regulation of synthesis for each polymer is complex and vital to cell function. A regulatory hierarchy of developmental switches has been proposed, although the full complement of regulators remains unknown. Here we present a protein–DNA network between Arabidopsis thaliana transcription factors and secondary cell wall metabolic genes with gene expression regulated by a series of feed-forward loops. This model allowed us to develop and validate new hypotheses about secondary wall gene regulation under abiotic stress. Distinct stresses are able to perturb targeted genes to potentially promote functional adaptation. These interactions will serve as a foundation for understanding the regulation of a complex, integral plant component.

Date: 2015
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DOI: 10.1038/nature14099

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