Plant Physiology Preview
Published on January 16, 2003; 10.1104/pp.014209
Received September 10, 2002
Returned for revision October 25, 2002
Accepted November 14, 2002
The Arabidopsis STICHEL Gene Is a Regulator of Trichome Branch Number and Encodes a Novel Protein
Hilmar Ilgenfritz , Daniel Bouyer , Arp Schnittger , Jaideep Mathur , Victor Kirik , Birgit Schwab , Nam-Hai Chua , Gerd Jürgens , and Martin Hülskamp *
Zentrum für Molekularbiologie Pflanzen, Entwicklungsgenetik, Universität Tübingen, Auf der Morgenstelle 1, D-72076 Tübingen, Germany (H.I., D.B., A.S., B.S., G.J., M.H.); University of Köln, Botanical Institute III, Gyrhofstrasse 15, 50931 Köln, Germany (J.M., V.K., M.H.); and Rockefeller University, 1230 York Avenue, New York, New York 10021 (N.-H.C.)
* Corresponding author; email: martin.huelskamp{at}uni-koeln.de.
Here, we analyze the STICHEL (STI) gene, which plays an important role in the regulation of branch number of the unicellular trichomes in Arabidopsis. We have isolated the STI locus by positional cloning and confirmed the identity by sequencing seven independent sti alleles. The STI gene encodes a protein of 1,218 amino acid residues containing a domain with sequence similarity to the ATP-binding eubacterial DNA-polymerase III  -subunits. Because endoreduplication was found to be normal in sti mutants the molecular function of STI in cell morphogenesis is not linked to DNA replication and, therefore, postulated to represent a novel pathway. Northern-blot analysis shows that STI is expressed in all organs suggesting that STI function is not trichome specific. The analysis of sti alleles and transgenic lines overexpressing STI suggests that STI regulates branching in a dosage-dependent manner.
This article has been cited by other articles:
|
|
|
|
 
J. M. Plett, J. Mathur, and S. Regan
Ethylene receptor ETR2 controls trichome branching by regulating microtubule assembly in Arabidopsis thaliana
J. Exp. Bot.,
September 1, 2009;
60(13):
3923 - 3933.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Breuer, A. Kawamura, T. Ichikawa, R. Tominaga-Wada, T. Wada, Y. Kondou, S. Muto, M. Matsui, and K. Sugimoto
The Trihelix Transcription Factor GTL1 Regulates Ploidy-Dependent Cell Growth in the Arabidopsis Trichome
PLANT CELL,
August 1, 2009;
21(8):
2307 - 2322.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. D. Marks, J. P. Wenger, E. Gilding, R. Jilk, and R. A. Dixon
Transcriptome Analysis of Arabidopsis Wild-Type and gl3-sst sim Trichomes Identifies Four Additional Genes Required for Trichome Development
Mol Plant,
July 1, 2009;
2(4):
803 - 822.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
C. Hofmann, A. Niehl, A. Sambade, A. Steinmetz, and M. Heinlein
Inhibition of Tobacco Mosaic Virus Movement by Expression of an Actin-Binding Protein
Plant Physiology,
April 1, 2009;
149(4):
1810 - 1823.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
Z. Larson-Rabin, Z. Li, P. H. Masson, and C. D. Day
FZR2/CCS52A1 Expression Is a Determinant of Endoreduplication and Cell Expansion in Arabidopsis
Plant Physiology,
February 1, 2009;
149(2):
874 - 884.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
H. Khan, N. Parks, C. Kozera, B. A. Curtis, B. J. Parsons, S. Bowman, and J. M. Archibald
Plastid Genome Sequence of the Cryptophyte Alga Rhodomonas salina CCMP1319: Lateral Transfer of Putative DNA Replication Machinery and a Test of Chromist Plastid Phylogeny
Mol. Biol. Evol.,
August 1, 2007;
24(8):
1832 - 1842.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
X. Zhang, P. H. Grey, S. Krishnakumar, and D. G. Oppenheimer
The IRREGULAR TRICHOME BRANCH loci regulate trichome elongation in Arabidopsis
Plant Cell Physiol.,
September 1, 2005;
46(9):
1549 - 1560.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
|
|
M. Muller and W. Schmidt
Environmentally Induced Plasticity of Root Hair Development in Arabidopsis
Plant Physiology,
January 1, 2004;
134(1):
409 - 419.
[Abstract]
[Full Text]
[PDF]
|
|
|
|
|
