Plant Molecular Biology

, Volume 45, Issue 5, pp 517–527 | Cite as

Molecular identification and characterization of the Arabidopsis AtADF1, AtADF5 and AtADF6 genes

  • Chun-Hai Dong
  • Benedikt Kost
  • Guixian Xia
  • Nam-Hai Chua

Abstract

Actin depolymerizing factor (ADF) is a key regulator of the organization of the actin cytoskeleton during various cellular activities. We found that ADF genes in Arabidopsis form a large family consisting of at least nine members, four of which were cloned and sequenced in this study. Comparison of genomic and cDNA sequences showed that the AtADF1, AtADF5, and AtADF6 genes all contain two introns at conserved positions. Analysis of transgenic Arabidopsis plants carrying promoter-GUS fusion constructs revealed that AtADF1 and AtADF6 are expressed in the vascular tissues of all organs, whereas expression of AtADF5 is restricted to the root tip meristem. GFP-AtADF1, GFP-AtADF5, and GFP-AtADF6 fusion proteins were found to bind to actin filaments in vivo, and to reorganize the actin cytoskeleton when transiently expressed in plant cells.

ADF (actin depolymerizing factor) actin cytoskeleton Arabidopsis thaliana GUS GFP 

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Copyright information

© Kluwer Academic Publishers 2001

Authors and Affiliations

  • Chun-Hai Dong
    • 1
  • Benedikt Kost
    • 1
  • Guixian Xia
    • 1
  • Nam-Hai Chua
    • 2
  1. 1.Laboratory of Plant Cell Biology, Institute of Molecular AgrobiologyNational University of SingaporeSingapore 
  2. 2.Laboratory of Plant Molecular BiologyRockefeller UniversityNew YorkUSA

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