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A Gene Expression Map of the Arabidopsis Root

Science, 12 December 2003
Vol. 302, Issue 5652, p. 1956-1960
DOI: 10.1126/science.1090022

A Gene Expression Map of the Arabidopsis Root

  1. Kenneth Birnbaum1,
  2. Dennis E. Shasha2,
  3. Jean Y. Wang3,
  4. Jee W. Jung1,
  5. Georgina M. Lambert4,
  6. David W. Galbraith4,
  7. Philip N. Benfey3,*
  1. 1 Department of Biology, New York University, New York, NY 10003, USA.
  2. 2 Courant Institute of Mathematical Sciences, New York University, New York, NY 10003, USA.
  3. 3 Department of Biology, Duke University, Box 91000, Durham, NC 27708, USA.
  4. 4 Department of Plant Sciences, University of Arizona, Tucson, AZ 85721, USA.
  1. * To whom correspondence should be addressed. E-mail: philip.benfey{at}duke.edu

Abstract

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.

  • Received for publication 4 August 2003.
  • Accepted for publication 15 October 2003.

Citation:

K. Birnbaum, D. E. Shasha, J. Y. Wang, J. W. Jung, G. M. Lambert, D. W. Galbraith, and P. N. Benfey, A Gene Expression Map of the Arabidopsis Root. Science 302, 1956-1960 (2003).

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