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Science 12 December 2003:
Vol. 302. no. 5652, pp. 1956 - 1960
DOI: 10.1126/science.1090022

Reports

A Gene Expression Map of the Arabidopsis Root

Kenneth Birnbaum,1 Dennis E. Shasha,2 Jean Y. Wang,3 Jee W. Jung,1 Georgina M. Lambert,4 David W. Galbraith,4 Philip N. Benfey3*

A global map of gene expression within an organ can identify genes with coordinated expression in localized domains, thereby relating gene activity to cell fate and tissue specialization. Here, we present localization of expression of more than 22,000 genes in the Arabidopsis root. Gene expression was mapped to 15 different zones of the root that correspond to cell types and tissues at progressive developmental stages. Patterns of gene expression traverse traditional anatomical boundaries and show cassettes of hormonal response. Chromosomal clustering defined some coregulated genes. This expression map correlates groups of genes to specific cell fates and should serve to guide reverse genetics.

1 Department of Biology, New York University, New York, NY 10003, USA.
2 Courant Institute of Mathematical Sciences, New York University, New York, NY 10003, USA.
3 Department of Biology, Duke University, Box 91000, Durham, NC 27708, USA.
4 Department of Plant Sciences, University of Arizona, Tucson, AZ 85721, USA.

* To whom correspondence should be addressed. E-mail: philip.benfey{at}duke.edu

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Arabidopsis TEBICHI, with Helicase and DNA Polymerase Domains, Is Required for Regulated Cell Division and Differentiation in Meristems.
S. Inagaki, T. Suzuki, M.-a. Ohto, H. Urawa, T. Horiuchi, K. Nakamura, and A. Morikami (2006)
PLANT CELL 18, 879-892
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A Transcriptome-Based Characterization of Habituation in Plant Tissue Culture.
M. S. Pischke, E. L. Huttlin, A. D. Hegeman, and M. R. Sussman (2006)
Plant Physiology 140, 1255-1278
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Progressive Inhibition by Water Deficit of Cell Wall Extensibility and Growth along the Elongation Zone of Maize Roots Is Related to Increased Lignin Metabolism and Progressive Stelar Accumulation of Wall Phenolics.
L. Fan, R. Linker, S. Gepstein, E. Tanimoto, R. Yamamoto, and P. M. Neumann (2006)
Plant Physiology 140, 603-612
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The Arabidopsis genome: A foundation for plant research.
M. Bevan and S. Walsh (2005)
Genome Res. 15, 1632-1642
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Functional Genomic Analysis of the AUXIN/INDOLE-3-ACETIC ACID Gene Family Members in Arabidopsis thaliana.
P. J. Overvoorde, Y. Okushima, J. M. Alonso, A. Chan, C. Chang, J. R. Ecker, B. Hughes, A. Liu, C. Onodera, H. Quach, et al. (2005)
PLANT CELL 17, 3282-3300
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Cuticular Lipid Composition, Surface Structure, and Gene Expression in Arabidopsis Stem Epidermis.
M. C. Suh, A. L. Samuels, R. Jetter, L. Kunst, M. Pollard, J. Ohlrogge, and F. Beisson (2005)
Plant Physiology 139, 1649-1665
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Multiple Type-B Response Regulators Mediate Cytokinin Signal Transduction in Arabidopsis.
M. G. Mason, D. E. Mathews, D. A. Argyros, B. B. Maxwell, J. J. Kieber, J. M. Alonso, J. R. Ecker, and G. E. Schaller (2005)
PLANT CELL 17, 3007-3018
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Isolation, Characterization, and Pericycle-Specific Transcriptome Analyses of the Novel Maize Lateral and Seminal Root Initiation Mutant rum1.
K. Woll, L. A. Borsuk, H. Stransky, D. Nettleton, P. S. Schnable, and F. Hochholdinger (2005)
Plant Physiology 139, 1255-1267
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Histone acetylation affects expression of cellular patterning genes in the Arabidopsis root epidermis.
C.-R. Xu, C. Liu, Y.-L. Wang, L.-C. Li, W.-Q. Chen, Z.-H. Xu, and S.-N. Bai (2005)
PNAS 102, 14469-14474
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A microarray analysis of the rice transcriptome and its comparison to Arabidopsis.
L. Ma, C. Chen, X. Liu, Y. Jiao, N. Su, L. Li, X. Wang, M. Cao, N. Sun, X. Zhang, et al. (2005)
Genome Res. 15, 1274-1283
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GAL4-GFP enhancer trap lines for genetic manipulation of lateral root development in Arabidopsis thaliana.
L. Laplaze, B. Parizot, A. Baker, L. Ricaud, A. Martiniere, F. Auguy, C. Franche, L. Nussaume, D. Bogusz, and J. Haseloff (2005)
J. Exp. Bot. 56, 2433-2442
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The small GTPase AtRAC2/ROP7 is specifically expressed during late stages of xylem differentiation in Arabidopsis.
T. Brembu, P. Winge, and A. M. Bones (2005)
J. Exp. Bot. 56, 2465-2476
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The 14-Amino Acid CLV3, CLE19, and CLE40 Peptides Trigger Consumption of the Root Meristem in Arabidopsis through a CLAVATA2-Dependent Pathway.
M. Fiers, E. Golemiec, J. Xu, L. van der Geest, R. Heidstra, W. Stiekema, and C.-M. Liu (2005)
PLANT CELL 17, 2542-2553
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Gene Trap Lines Define Domains of Gene Regulation in Arabidopsis Petals and Stamens.
N. Nakayama, J. M. Arroyo, J. Simorowski, B. May, R. Martienssen, and V. F. Irish (2005)
PLANT CELL 17, 2486-2506
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Identification of Novel Genes in Arabidopsis Involved in Secondary Cell Wall Formation Using Expression Profiling and Reverse Genetics.
D. M. Brown, L. A.H. Zeef, J. Ellis, R. Goodacre, and S. R. Turner (2005)
PLANT CELL 17, 2281-2295
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Systematic Spatial Analysis of Gene Expression during Wheat Caryopsis Development.
S. Drea, D. J. Leader, B. C. Arnold, P. Shaw, L. Dolan, and J. H. Doonan (2005)
PLANT CELL 17, 2172-2185
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